Kerui Refractory FAQ
Popular Questions:
What types of refractory bricks does Kerui Refractory produce?
Can you supply monolithic refractory materials for high-temperature applications?
What is the difference between cordierite and silicon carbide kiln furniture?
Do you provide customized refractory solutions?
Where is Kerui Refractory’s factory located?
Can standard products be shipped immediately?
How long does it take to produce custom refractory products?
Do you provide technical support for product selection and installation?
What payment and shipping terms do you offer for international orders?
How can Kerui Refractory ensure consistent product quality?
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What types of refractory bricks does Kerui Refractory produce?
Kerui Refractory manufactures high alumina bricks, fireclay bricks, magnesia bricks, silica bricks, and specialty customized refractory bricks for various industries.
Can you supply monolithic refractory materials for high-temperature applications?
Yes, we provide castables, ramming mixes, refractory mortars, and plastic/insulating materials suitable for temperatures up to 1700°C.
What is the difference between cordierite and silicon carbide kiln furniture?
Cordierite offers medium temperature resistance and cost efficiency, while silicon carbide provides high strength, thermal shock resistance, and is suitable for heavy load, high-temperature applications.
Do you provide customized refractory solutions?
Yes, we offer custom sizes, shapes, and compositions based on your technical drawings or project requirements.
Where is Kerui Refractory’s factory located?
Our factory is located in Chaohua Town, Xinmi City, Henan Province, China, a major base for refractory production.
Can standard products be shipped immediately?
Yes, regular sizes of bricks, monolithic materials, and kiln furniture are often kept in stock for fast dispatch.
How long does it take to produce custom refractory products?
Production time depends on the type, quantity, and complexity of the order; urgent orders can be discussed to expedite scheduling.
Do you provide technical support for product selection and installation?
Yes, our technical team offers guidance on material selection, installation recommendations, and application optimization.
What payment and shipping terms do you offer for international orders?
We support T/T, L/C, EXW, FOB, CIF, and DDP shipping, depending on customer preference and destination.
How can Kerui Refractory ensure consistent product quality?
We implement strict quality control, including raw material inspection, in-process testing, and final inspection before shipment.
What are refractory monolithic materials?
Refractory monolithic materials are unshaped refractory products such as castables, ramming masses, mortars, and plastic refractories, designed for flexible installation without preformed bricks.
What is refractory castable?
Refractory castable is a type of monolithic refractory mixed with water and poured or pumped into place to form high-temperature resistant linings.
What is insulating castable?
Insulating castable is a lightweight, low-density refractory designed to reduce heat loss and provide thermal insulation behind working linings.
What is low cement castable?
Low cement castable contains reduced calcium aluminate cement to improve high-temperature strength and service life compared to traditional castables.
What is ultra-low cement castable?
Ultra-low cement castable uses minimal cement content to enhance thermal shock resistance and reduce susceptibility to slag attack.
What is refractory plastic material?
Refractory plastic material is a moldable unshaped refractory with high plasticity, allowing hand molding or pneumatic application.
What is refractory gunning mix?
Refractory gunning mix is a material designed to be applied by spray equipment for repairing or building furnace linings.
What is refractory mortar?
Refractory mortar is a binding paste used to cement refractory bricks and materials together to form a stable high-temperature structure.
What is refractory flake graphite?
Refractory flake graphite is a high-purity carbon material used to improve thermal shock resistance and resistance to slag attack in refractory compositions.
What is high alumina plastic refractory?
High alumina plastic refractory is a highly workable monolithic material containing high alumina content for demanding thermal environments.
What is refractory insulating mortar?
Refractory insulating mortar is a lightweight binding material used behind refractory linings to minimize heat transfer.
What is refractory dry mortar?
Refractory dry mortar is a pre-blended, dry powder used for bonding refractory bricks and providing thermal stability at high temperatures.
What are ceramic fiber modules?
Ceramic fiber modules are pre-compressed insulation units made from ceramic fiber for rapid furnace lining installation.
What is ceramic fiber board?
Ceramic fiber board is a rigid insulation panel with thermal stability used for high-temperature furnace walls and linings.
What is ceramic fiber blanket?
Ceramic fiber blanket is a flexible insulation material that offers excellent thermal resistance and low heat storage.
What is ceramic fiber rope?
Ceramic fiber rope is braided insulation used for sealing and gasketing at high temperatures.
What is ceramic fiber paper?
Ceramic fiber paper is a thin, flexible sheet used for high-temperature gasketing and insulation applications.
What are bio-soluble ceramic fibers?
Bio-soluble ceramic fibers are insulation fibers designed to dissolve in biological environments, improving safety while maintaining thermal performance.
What is AES fiber?
AES fiber (alkaline earth silicate fiber) is a type of bio-soluble high-temperature fiber with improved health profile compared to traditional refractory ceramic fiber.
What is vermiculite board?
Vermiculite board is a fire-resistant insulation board made from expanded vermiculite, used in fireplaces, furnaces, and kilns.
What is fiberglass cloth?
Fiberglass cloth is a woven fabric of glass fibers used for medium-temperature insulation and fire protection wrapping.
What is fiberglass tape?
Fiberglass tape is a strip of woven glass fiber used for insulation, wrapping, and sealing at elevated temperatures.
What is silicon carbide kiln furniture?
Silicon carbide kiln furniture refers to refractory support components made with high SiC content, offering superior thermal shock resistance and strength.
What is cordierite-mullite kiln furniture?
Cordierite-mullite kiln furniture is a lightweight refractory used for medium-temperature kiln supports and shelves with excellent thermal shock resistance.
What is a kiln shelf?
A kiln shelf is a flat refractory plate used inside kilns to support products during firing.
What is a kiln post?
A kiln post is a vertical column used to support kiln shelves inside industrial kilns.
What is a kiln setter plate?
A kiln setter plate is a precision refractory plate used to support specific ceramic shapes during firing.
What is a saggar?
A saggar is a protective refractory container placed around products to shield them from direct flame or gas during firing.
What is a kiln roller?
A kiln roller is a cylindrical refractory support component used in continuous roller kiln systems to transport products.
What are refractory bricks?
Refractory bricks are high-temperature resistant materials used to line furnaces, kilns, and reactors. They protect equipment structures from extreme heat and chemical attack.
What industries use refractory bricks?
Steel plants, cement factories, glass manufacturers, aluminum smelters, petrochemical facilities, and incineration plants widely use refractory bricks.
What temperature can refractory bricks withstand?
Depending on composition, refractory bricks can withstand temperatures ranging from 1100°C to above 1800°C.
What is a high alumina brick?
A high alumina brick contains over 48% alumina and offers strong resistance to high temperatures and slag corrosion.
What is a magnesia brick?
Magnesia brick is made primarily of MgO and is ideal for basic slag environments such as steel converters.
What are silica bricks used for?
Silica bricks are typically used in coke ovens and glass furnaces due to their high load softening temperature.
What is a mullite brick?
Mullite bricks offer excellent thermal shock resistance and are commonly used in high-temperature kilns.
What is a silicon carbide brick?
Silicon carbide bricks provide superior wear resistance and thermal conductivity for harsh operating conditions.
What is insulating fire brick?
Insulating fire bricks are lightweight bricks with low thermal conductivity used as backup insulation layers.
How do I choose the right refractory brick?
Selection depends on operating temperature, chemical exposure, mechanical stress, and heating cycle frequency.
What affects refractory brick lifespan?
Thermal shock, slag corrosion, improper installation, and rapid heating cycles significantly impact lifespan.
How long do refractory bricks last?
Service life varies but typically ranges from one to five years depending on application and maintenance.
Why do refractory bricks crack?
Cracking can occur due to thermal expansion stress, rapid temperature changes, or chemical attack.
What is cold crushing strength?
Cold crushing strength measures a brick’s ability to withstand compressive force at room temperature.
What is bulk density in refractory bricks?
Bulk density indicates the mass per unit volume and affects thermal conductivity and strength.
What is apparent porosity?
Apparent porosity refers to the percentage of open pores in the brick, influencing insulation and slag penetration resistance.
What is refractoriness under load?
Refractoriness under load measures deformation temperature under a specific load condition.
Are refractory bricks reusable?
Some bricks can be reused if structurally intact and not chemically damaged.
Do refractory bricks need mortar?
Yes, compatible refractory mortar ensures bonding strength and consistent thermal expansion.
How are refractory bricks manufactured?
They are produced through raw material mixing, shaping, drying, and high-temperature firing.
Can refractory bricks be customized?
Yes, custom shapes such as wedge, arch, and burner blocks are available.
What sizes are standard refractory bricks?
Common standard size is 230×114×65 mm, though many other sizes are available.
How much do refractory bricks cost?
Price depends on material grade, density, quantity, and customization requirements.
Is higher alumina content always better?
Higher alumina improves temperature resistance but may not be necessary for lower-temperature applications.
What is the difference between dense and insulating bricks?
Dense bricks are load-bearing and strong, while insulating bricks reduce heat loss.
Can refractory bricks resist chemical corrosion?
Specific materials are designed to resist acidic or basic chemical environments.
How should refractory bricks be stored?
They should be stored in dry conditions and protected from moisture.
Do refractory bricks absorb water?
Yes, high porosity bricks may absorb moisture if not properly stored.
What is thermal shock resistance?
Thermal shock resistance refers to the ability to withstand rapid temperature changes without cracking.
Are refractory bricks environmentally safe?
Most industrial refractory bricks are safe when properly installed and handled.
What is the difference between acid-resistant and basic bricks?
Acid-resistant bricks withstand acidic slag, while basic bricks resist alkaline slag.
Can refractory bricks improve energy efficiency?
Yes, proper insulation and material selection reduce heat loss and fuel consumption.
How to calculate refractory brick quantity?
Quantity depends on furnace dimensions, lining thickness, and brick layout pattern.
What is a key brick?
A key brick is a specially shaped brick used to lock arch structures in place.
What is a wedge brick?
A wedge brick is tapered to fit circular furnace linings.
How do refractory bricks expand at high temperature?
Each material has a specific thermal expansion rate that must be considered during installation.
Can refractory bricks handle mechanical impact?
Dense bricks with high crushing strength resist mechanical stress better.
Are refractory bricks suitable for fireplaces?
Yes, medium-duty fire bricks are commonly used in fireplaces.
What is spalling in refractory bricks?
Spalling refers to surface flaking due to thermal stress or moisture expansion.
Do refractory bricks degrade over time?
Yes, continuous exposure to high heat and chemical attack gradually reduces performance.
How is quality tested?
Testing includes chemical analysis, density measurement, CCS, RUL, and porosity testing.
What raw materials are used in high alumina bricks?
Bauxite, alumina powder, and additives are commonly used.
What raw materials are used in magnesia bricks?
Magnesite or fused magnesia is the primary raw material.
Are refractory bricks heavy?
Dense bricks are heavy, while insulating bricks are significantly lighter.
Can refractory bricks withstand abrasion?
Silicon carbide bricks are especially resistant to abrasion.
What is slag resistance?
Slag resistance refers to the ability to resist chemical attack from molten materials.
Do refractory bricks shrink during firing?
Controlled firing minimizes shrinkage and ensures dimensional stability.
What is permanent linear change?
It measures dimensional change after reheating at high temperature.
How fast should a furnace be heated after installation?
Heating should follow a gradual dry-out schedule to prevent cracking.
Can refractory bricks be cut?
Yes, they can be cut using appropriate tools, but precision cutting is recommended.
What certifications are available?
Mill test certificates and third-party inspection reports are typically available.
Are refractory bricks suitable for electric furnaces?
Yes, material choice depends on temperature and atmosphere conditions.
Do refractory bricks resist oxidation?
Certain materials are more resistant to oxidation depending on chemical composition.
What is the shelf life of refractory bricks?
Bricks have long shelf life if stored properly in dry conditions.
Can refractory bricks withstand vacuum conditions?
Specific grades are suitable for controlled atmosphere or vacuum furnaces.
Is installation support available?
Technical guidance can be provided for proper lining installation.
What is hot face lining?
Hot face lining refers to bricks directly exposed to flame or molten material.
What is backup lining?
Backup lining is the insulation layer behind the hot face bricks.
How to prevent refractory brick failure?
Correct material selection, proper installation, and controlled heating reduce failure risk.
Can refractory bricks handle cyclic heating?
Mullite and silicon carbide bricks perform better under frequent thermal cycling.
What is thermal conductivity?
Thermal conductivity measures heat transfer through the brick material.
Is lower thermal conductivity better?
Lower thermal conductivity improves insulation but may reduce mechanical strength.
What is the HS code for refractory bricks?
The typical HS code for refractory bricks is 6902.
Can refractory bricks be exported internationally?
Yes, they are widely exported with proper palletized packaging.
Are samples available?
Small samples are usually available for testing before bulk order.
What is minimum order quantity?
MOQ depends on product type and customization requirements.
Can refractory bricks be used in cement kilns?
Yes, high alumina and magnesia bricks are commonly used in cement kilns.
Are refractory bricks resistant to acid?
Silica and certain high alumina bricks resist acidic environments.
Are refractory bricks resistant to alkaline slag?
Magnesia bricks are ideal for alkaline slag resistance.
What is load-bearing capacity?
It refers to the ability to support structural weight at high temperature.
What is the difference between standard and premium grade bricks?
Premium bricks use higher purity raw materials and offer longer service life.
Can refractory bricks reduce maintenance costs?
Yes, higher-quality bricks extend lining life and reduce shutdown frequency.
Do refractory bricks require curing?
Bricks themselves do not require curing, but mortar joints may need controlled drying.
What is firing temperature during production?
Production firing temperature varies by material, typically above 1400°C.
Are refractory bricks dimensionally stable?
Properly fired bricks maintain dimensional stability under normal operating conditions.
Can refractory bricks resist molten metal?
Specific grades are designed to resist molten aluminum, steel, or copper.
Is technical consultation available before purchase?
Yes, providing operating details helps determine the optimal solution.
What is hot modulus of rupture?
It measures bending strength at elevated temperature.
Can refractory bricks be used in incinerators?
Yes, abrasion and chemical-resistant bricks are used in waste incineration systems.
How to improve furnace energy efficiency?
Using proper insulation and layered refractory systems reduces heat loss.
Are refractory bricks resistant to thermal expansion?
Each material has controlled expansion properties suitable for specific environments.
Can refractory bricks withstand pressure?
Dense bricks with high crushing strength can withstand significant pressure.
What is slag penetration?
Slag penetration refers to molten material infiltrating porous brick structure.
How to reduce slag penetration?
Lower porosity and higher density bricks improve resistance.
Are refractory bricks eco-friendly?
Modern refractory production focuses on durability and reduced energy consumption.
What packaging is used for export?
Strong wooden pallets with moisture-proof wrapping are commonly used.
What is delivery time?
Standard products typically ship within 7–20 days depending on order size.
Can refractory bricks be used in boilers?
Yes, appropriate high-temperature grades are used in industrial boilers.
Do refractory bricks resist erosion?
Silicon carbide bricks provide strong erosion resistance.
Can refractory bricks withstand high pressure gas?
Material choice depends on gas composition and operating temperature.
How do I request a quotation?
Provide brick type, size, quantity, and application details for accurate pricing.
What are unshaped refractory materials?
Unshaped refractories are monolithic materials supplied in powder or granular form that are installed directly at the site instead of being pre-formed into bricks.
What is refractory castable?
Refractory castable is a flowable refractory material mixed with water and poured into molds or furnace linings to form a solid structure after curing.
What is ramming mass?
Ramming mass is a semi-dry refractory material that is compacted manually or mechanically into place without flowing like castable.
What is plastic refractory?
Plastic refractory is a moldable material with high plasticity that can be shaped manually and compacted into furnace linings.
What is gunning mix?
Gunning mix is a refractory material applied by spraying equipment for furnace repair or new lining construction.
What is refractory mortar used for?
Refractory mortar is used to bond refractory bricks and seal joints in high-temperature structures.
What are the advantages of monolithic refractories?
They reduce joints, improve structural integrity, allow flexible installation, and often shorten construction time.
How do I choose the right castable?
Selection depends on operating temperature, chemical attack, abrasion level, and required mechanical strength.
What is low cement castable?
Low cement castable contains reduced calcium aluminate cement content, improving density and high-temperature performance.
What is ultra-low cement castable?
Ultra-low cement castable has minimal cement content, offering higher strength and better slag resistance at elevated temperatures.
What is high alumina castable?
High alumina castable contains elevated Al2O3 content and is suitable for high-temperature furnace linings.
What is insulating castable?
Insulating castable is lightweight and designed to reduce heat loss while providing moderate structural support.
How long does castable last?
Service life depends on installation quality and operating conditions, typically ranging from one to several years.
Why does castable crack?
Cracking often results from improper water addition, rapid drying, thermal shock, or insufficient curing.
What is the correct water addition ratio?
The water ratio varies by formulation and must follow manufacturer recommendations to maintain strength.
What is cold crushing strength in castables?
It measures compressive strength after curing and indicates load-bearing capacity.
What is bulk density in monolithic refractory?
Bulk density represents mass per volume and affects thermal conductivity and durability.
What is apparent porosity?
Apparent porosity reflects the percentage of open pores influencing slag penetration resistance.
What is permanent linear change?
It measures dimensional stability after exposure to high temperatures.
What is refractoriness under load for castable?
It indicates deformation resistance at high temperature under applied load.
Can castable resist abrasion?
Yes, abrasion-resistant castables are specially formulated for high wear environments.
What is silicon carbide castable?
It includes SiC aggregates for enhanced abrasion resistance and thermal shock performance.
What is mullite castable?
Mullite castable offers excellent thermal shock resistance and stability at high temperatures.
What is magnesia castable used for?
Magnesia castable is suitable for basic slag environments in steelmaking.
How is castable installed?
It is mixed with controlled water content, poured into molds, vibrated for compaction, then cured and dried.
How long should castable cure?
Initial curing typically takes 24 hours, followed by controlled drying before heating.
What is dry-out procedure?
Dry-out is a gradual heating process to remove moisture and prevent explosive spalling.
Can monolithic refractory be pumped?
Certain self-flow and pumpable castables are designed for pumping applications.
What is self-flow castable?
Self-flow castable requires minimal vibration and flows under its own weight.
What is the shelf life of castable?
Typically six months when stored in dry, sealed conditions.
How should castable be stored?
Store in dry, moisture-free environments to prevent premature hydration.
Can ramming mass be used without water?
Some ramming masses are dry and require minimal or no water addition.
What industries use ramming mass?
It is widely used in induction furnaces and steel ladle linings.
What affects castable price?
Raw material quality, alumina content, additives, and order quantity influence pricing.
Is higher alumina content always better?
Not necessarily; the correct grade depends on application temperature and chemical exposure.
Can castable replace refractory bricks?
In many cases yes, as monolithic linings reduce joints and installation time.
What is hot modulus of rupture?
It measures bending strength at elevated temperature.
How to prevent spalling in castables?
Control water content, follow proper curing, and apply gradual heating schedules.
What is explosive spalling?
It occurs when trapped moisture rapidly vaporizes during fast heating.
Are samples available for testing?
Small sample quantities are usually available for laboratory testing.
Can monolithic refractory resist chemical corrosion?
Special formulations resist acidic or basic environments.
What is gunning repair?
It is a maintenance method where refractory material is sprayed to repair damaged linings.
What is precast refractory shape?
Precast shapes are cast off-site and installed as ready-made refractory components.
Is technical support available?
Engineering consultation helps select suitable materials and installation methods.
What is shotcrete refractory?
Shotcrete refractory is pneumatically applied castable for rapid installation.
How to calculate castable quantity?
Volume calculation based on lining thickness and surface area determines required tonnage.
What is slag resistance?
It indicates the ability to withstand molten material attack.
What is erosion resistance?
Erosion resistance measures durability against particle or gas flow wear.
Can castable withstand thermal cycling?
Mullite and SiC-based castables perform well under cyclic heating.
Do castables shrink during drying?
Minor shrinkage occurs but controlled formulation limits cracking.
What is working temperature?
It refers to the recommended continuous operating temperature.
What is maximum service temperature?
It is the highest temperature the material can tolerate under specific conditions.
Are monolithic refractories exportable?
Yes, they are shipped in moisture-proof bags or bulk packaging.
What is the minimum order quantity?
MOQ depends on product type and customization level.
Can insulating castable improve energy efficiency?
Yes, it reduces heat loss and lowers fuel consumption.
Is curing compound required?
Some applications benefit from curing compounds to retain moisture during initial setting.
What is vibration casting?
It is a method using vibration to remove air bubbles and compact the castable.
Can plastic refractory handle impact?
Plastic refractories provide good resistance to mechanical impact.
What is alumina cement in castables?
Alumina cement acts as a binder for strength development.
Are there cement-free castables?
Yes, colloidal silica bonded castables eliminate cement for improved purity.
What is colloidal silica castable?
It uses silica sol as binder, offering high-temperature performance.
What is drying time before heating?
Typically 24–48 hours before gradual heating begins.
Can castable be used in boilers?
Yes, abrasion-resistant grades are used in boiler linings.
What is induction furnace ramming mass?
It is specially designed material for induction furnace lining.
How to extend monolithic lining life?
Correct installation, maintenance, and temperature control extend service life.
What is lining thickness recommendation?
Thickness depends on temperature and structural requirements.
Are customized formulations available?
Yes, formulations can be adjusted for specific furnace conditions.
What is slag penetration?
It refers to molten slag infiltrating porous refractory structure.
How to reduce slag penetration?
Higher density and lower porosity formulations improve resistance.
What is pumpable castable?
Pumpable castable is designed for mechanical pumping to high elevations.
What is high strength castable?
High strength castable offers elevated mechanical properties for load-bearing areas.
Is installation training available?
Guidance on mixing, pouring, and dry-out can be provided.
What is abrasion loss test?
It measures material loss under mechanical wear simulation.
What is chemical composition importance?
Chemical composition determines temperature resistance and corrosion performance.
Are monolithic refractories eco-friendly?
Modern formulations focus on durability and energy efficiency.
Can castable resist molten metal?
Specific grades resist aluminum, steel, or other molten metals.
What is permanent volume change?
It measures structural stability after reheating.
How to repair damaged lining?
Damaged sections can be patched using compatible repair mixes.
Is ramming mass suitable for steel ladles?
Yes, certain grades are used in ladle working linings.
What is curing temperature?
Ambient curing temperature is usually between 15–30°C.
What packaging is used?
Typically 25kg moisture-proof bags on export pallets.
Can castable be layered?
Yes, hot face and backup layers can be installed separately.
What is insulating backup layer?
It is a lightweight layer behind the working lining.
What causes low strength in castable?
Excess water or insufficient mixing often reduces strength.
Can monolithic refractory reduce downtime?
Yes, faster installation reduces shutdown periods.
Is refractory castable cost-effective?
It often reduces labor and joint maintenance compared to bricks.
What test reports are available?
Chemical analysis and physical property reports are typically provided.
Can castable be used in cement kilns?
Yes, high-temperature grades are used in kiln linings.
How to request quotation?
Provide application, temperature, thickness, and quantity for accurate pricing.
What is ceramic fiber?
Ceramic fiber is a lightweight insulation material made from alumino-silicate fibers designed for high-temperature thermal insulation applications.
What are ceramic fiber blankets used for?
Ceramic fiber blankets are used for furnace lining, pipe insulation, expansion joint filling, and high-temperature thermal wrapping.
What is ceramic fiber board?
Ceramic fiber board is a rigid insulation panel made from ceramic fibers, used where structural strength and thermal insulation are required.
What is ceramic fiber module?
Ceramic fiber modules are pre-compressed insulation units designed for quick furnace wall installation.
What is ceramic fiber paper?
Ceramic fiber paper is a thin insulation sheet used for gasketing, sealing, and thermal barriers.
What is ceramic fiber rope used for?
Ceramic fiber rope is used for high-temperature sealing in furnace doors and expansion joints.
What temperature can ceramic fiber withstand?
Standard ceramic fiber products withstand temperatures from 1000°C to 1600°C depending on grade.
What is bio soluble fiber?
Bio soluble fiber is an alkaline earth silicate insulation fiber designed to dissolve more easily in biological environments compared to traditional ceramic fiber.
What is AES fiber?
AES fiber stands for alkaline earth silicate fiber, commonly used as a safer alternative to refractory ceramic fiber.
What is the difference between ceramic fiber and bio soluble fiber?
Bio soluble fiber has improved biopersistence characteristics while maintaining similar thermal insulation performance.
What is fiberglass insulation?
Fiberglass insulation is made from glass fibers and is widely used for medium-temperature thermal and acoustic insulation.
What is fiberglass cloth?
Fiberglass cloth is woven glass fiber fabric used for insulation wrapping and fire protection.
What is vermiculite board?
Vermiculite board is a fire-resistant insulation panel made from expanded vermiculite and binders.
What is vermiculite board used for?
It is commonly used in fireplaces, stoves, and fireproof construction panels.
What is the density of ceramic fiber blanket?
Common densities range from 96 to 160 kg/m³ depending on application.
What is thermal conductivity of ceramic fiber?
Ceramic fiber has low thermal conductivity, typically below 0.2 W/m·K at high temperatures.
Is ceramic fiber lightweight?
Yes, it is significantly lighter than traditional refractory bricks.
How long does ceramic fiber last?
Service life depends on temperature and environment, often lasting several years in stable conditions.
Can ceramic fiber resist thermal shock?
Yes, ceramic fiber performs well under rapid temperature changes.
Is ceramic fiber resistant to chemicals?
It resists most neutral and mildly acidic environments but may degrade in strong alkaline conditions.
What is maximum service temperature of bio fiber?
Bio soluble fiber typically withstands up to 1200–1400°C depending on formulation.
Is ceramic fiber safe?
Proper handling with protective equipment is recommended during installation.
Can ceramic fiber improve energy efficiency?
Yes, its low heat storage and insulation properties reduce fuel consumption.
How is ceramic fiber installed?
It can be anchored mechanically or adhered using high-temperature adhesives.
What is ceramic fiber shrinkage?
Shrinkage refers to dimensional change at elevated temperatures.
What is ceramic fiber module advantage?
Modules reduce installation time and improve lining consistency.
Can fiberglass withstand high temperature?
Fiberglass typically withstands temperatures up to 600°C depending on type.
What is fiberglass tape used for?
Fiberglass tape is used for insulation wrapping and fireproof sealing.
What is the difference between fiberglass and ceramic fiber?
Ceramic fiber withstands much higher temperatures than fiberglass.
Is vermiculite board fireproof?
Vermiculite board is highly fire-resistant and suitable for passive fire protection.
Can ceramic fiber be cut easily?
Yes, it can be cut with standard tools for flexible installation.
Does ceramic fiber absorb water?
It can absorb moisture but dries without permanent damage if not chemically attacked.
What is ceramic fiber bulk density?
Bulk density affects insulation efficiency and mechanical strength.
Is bio soluble fiber environmentally friendly?
It is designed to reduce long-term biological persistence compared to traditional fibers.
What industries use ceramic fiber?
Steel, petrochemical, power generation, glass, and ceramic industries commonly use it.
Can ceramic fiber replace refractory bricks?
In insulation layers, ceramic fiber can replace heavy refractory materials.
What is ceramic fiber board thickness?
Common thickness ranges from 6 mm to 50 mm.
How to store ceramic fiber products?
Store in dry areas away from moisture exposure.
What packaging is used for export?
Products are packed in plastic bags and cartons on pallets.
Is ceramic fiber resistant to vibration?
Flexible blankets resist vibration better than rigid boards.
What is high purity ceramic fiber?
High purity fiber contains increased alumina content for improved temperature resistance.
Can ceramic fiber be layered?
Yes, multi-layer systems improve insulation performance.
What is expansion joint packing?
Ceramic fiber rope is commonly used to seal expansion joints.
Is fiberglass suitable for furnace lining?
Fiberglass is not suitable for very high-temperature furnace hot face lining.
What is vermiculite board density?
Density varies but typically ranges between 400–1000 kg/m³.
Can vermiculite board withstand direct flame?
It withstands high heat but is often used as insulation rather than direct flame contact material.
What is ceramic fiber felt?
Felt is a flexible insulation product similar to blanket but thinner.
What is ceramic fiber module anchor?
Anchor systems secure modules to furnace walls.
Can ceramic fiber resist corrosion?
It resists many chemicals but should be selected based on atmosphere.
What is continuous operating temperature?
It is the recommended stable working temperature for long-term use.
Is fiberglass fireproof?
Fiberglass is non-combustible but has lower temperature resistance than ceramic fiber.
What is thermal expansion of ceramic fiber?
Ceramic fiber has low thermal expansion compared to dense refractories.
Can ceramic fiber reduce furnace weight?
Yes, it significantly reduces structural load.
What is shotcrete fiber lining?
Fiber lining using modules or blankets installed quickly for insulation.
Can bio fiber replace traditional ceramic fiber?
Yes, in many applications bio fiber offers comparable insulation performance.
What is ceramic fiber gasket?
It is a sealing component made from fiber paper or rope.
Is vermiculite board easy to cut?
Yes, it can be cut with woodworking tools.
What affects ceramic fiber price?
Temperature grade, density, thickness, and order volume influence price.
Can ceramic fiber handle thermal cycling?
Yes, it performs well under frequent heating and cooling.
Is fiberglass insulation waterproof?
It resists moisture but prolonged exposure should be avoided.
What is ceramic fiber lining system?
It is a complete insulation structure using blankets or modules.
How to request quotation?
Provide product type, thickness, density, temperature grade, and quantity.
What is kiln furniture?
Kiln furniture refers to refractory components such as shelves, setters, saggars and supports used inside kilns to hold products during firing.
What materials are used for kiln furniture?
Common materials include silicon carbide, cordierite-mullite, high alumina and mullite compositions.
What is silicon carbide kiln furniture?
Silicon carbide kiln furniture is high-strength refractory support material known for excellent thermal shock resistance and load capacity.
What is cordierite-mullite kiln furniture?
Cordierite-mullite kiln furniture is lightweight refractory ware offering good thermal shock resistance for medium-temperature kilns.
What temperature can kiln shelves withstand?
Depending on material, kiln shelves can operate from 1200°C up to 1650°C.
What is a kiln shelf?
A kiln shelf is a flat refractory plate used to support ceramic products during firing.
What is a kiln post?
A kiln post is a vertical refractory column used to support kiln shelves.
What is a saggar?
A saggar is a box-shaped refractory container used to protect products during firing.
What is a setter plate?
A setter plate is a precision refractory plate designed to carry specific ceramic components during sintering.
What is a kiln bat?
A kiln bat is another term for a kiln shelf or flat support plate.
What is a roller kiln roller?
A roller kiln roller is a cylindrical refractory component that transports products through a roller kiln.
What material is best for high load kiln furniture?
Silicon carbide is preferred for heavy load and high temperature applications.
How long does kiln furniture last?
Service life depends on firing cycles, temperature and loading conditions, often lasting hundreds of cycles.
Why does kiln furniture crack?
Cracking may result from thermal shock, uneven loading, or mechanical impact.
How to prevent kiln shelf warping?
Ensure even loading, correct material selection, and proper support spacing.
What is thermal shock resistance in kiln furniture?
It refers to the ability to withstand rapid heating and cooling without cracking.
Can kiln shelves be customized?
Yes, shelves can be produced in custom dimensions and thicknesses.
What affects kiln furniture price?
Material type, size, thickness, temperature rating and order quantity influence pricing.
Is silicon carbide better than cordierite?
Silicon carbide performs better at higher temperatures and heavy loads, while cordierite is more economical for medium temperatures.
What is maximum working temperature of cordierite shelves?
Cordierite-mullite shelves typically operate up to around 1300–1350°C.
What is maximum temperature for SiC kiln furniture?
Silicon carbide kiln furniture can work up to 1600°C depending on grade.
How to clean kiln shelves?
Remove glaze drips mechanically and avoid harsh impact.
What is kiln furniture load capacity?
Load capacity depends on material strength, thickness and support span.
Can kiln shelves handle fast firing cycles?
High-quality SiC shelves are suitable for rapid firing processes.
What is kiln furniture for roller kilns?
It includes rollers and thin setter plates designed for continuous firing systems.
Are kiln posts heat resistant?
Yes, kiln posts are made of refractory materials resistant to high temperatures.
What causes kiln roller breakage?
Mechanical stress, thermal shock or improper installation may cause breakage.
What is lightweight kiln furniture?
Lightweight kiln furniture uses optimized composition to reduce kiln energy consumption.
Can kiln shelves be repaired?
Minor cracks may be repaired but severely damaged shelves should be replaced.
What is saggar used for?
Saggar protects sensitive products from direct flame or contamination.
Is kiln furniture resistant to chemical attack?
Certain materials resist glaze corrosion and kiln atmosphere effects.
How thick should kiln shelves be?
Thickness depends on span and load requirements.
What industries use kiln furniture?
Ceramic, sanitary ware, porcelain, electronic ceramics and powder metallurgy industries use kiln furniture.
What is reaction bonded silicon carbide?
It is a type of SiC kiln furniture with high strength and oxidation resistance.
What is recrystallized silicon carbide?
It is high-purity SiC kiln furniture suitable for extreme temperature applications.
What is kiln furniture span?
Span refers to the distance between supports under a shelf.
Can kiln furniture reduce firing costs?
Lightweight and durable kiln furniture improves energy efficiency and reduces replacement frequency.
Is cordierite kiln furniture economical?
Yes, it is cost-effective for medium temperature firing applications.
What is kiln support system?
It includes posts, beams and shelves forming the internal kiln structure.
Can kiln shelves deform?
Improper material selection or excessive load may cause deformation.
What is kiln setter for battery materials?
Setter plates used in lithium battery cathode sintering processes.
How to choose kiln furniture material?
Selection depends on temperature, load, atmosphere and firing cycle speed.
What packaging is used for export kiln furniture?
Products are packed in wooden crates with protective cushioning.
What is saggar firing?
Saggar firing is a process where products are enclosed in refractory boxes during firing.
Is silicon carbide oxidation resistant?
Yes, it forms a protective silica layer under high temperature.
What is kiln furniture density?
Density varies depending on composition and influences strength and weight.
What causes kiln shelf glaze sticking?
Glaze spills during firing can bond to shelf surfaces.
Can kiln furniture be used in gas kilns?
Yes, materials are selected based on kiln atmosphere.
What is high alumina kiln furniture?
High alumina kiln furniture offers strong load resistance at high temperatures.
How to extend kiln furniture life?
Use proper loading, gradual heating and avoid mechanical shock.
Is kiln furniture recyclable?
Some materials can be crushed and reused as refractory aggregates.
Can kiln rollers be customized?
Yes, rollers are manufactured in various diameters and lengths.
What is kiln shelf flatness tolerance?
Flatness tolerance depends on manufacturing precision and application requirement.
What is fast firing kiln furniture?
Specially designed low-mass furniture for rapid firing kilns.
Does kiln furniture affect product quality?
Stable and flat kiln furniture ensures uniform firing results.
What is oxidation bonded SiC?
A silicon carbide material bonded through oxidation process for kiln use.
Can kiln shelves withstand thermal cycling?
High-quality shelves resist repeated heating and cooling cycles.
What is kiln furniture for sanitary ware?
It includes heavy-duty shelves and supports for large ceramic products.
How to calculate shelf load?
Load calculation considers weight per area and support span.
Is kiln furniture impact resistant?
It resists thermal stress but should be handled carefully.
What is customized kiln furniture solution?
Engineering design based on kiln structure and product weight requirements.
What is your brand name?
Our brand name is Kerui Refractory, recognized for supplying high-quality refractory and kiln furniture products worldwide.
What is your company’s full legal name?
Our full company name is Zhengzhou Kerui (Group) Refractory Co., Ltd.
Where is your factory located?
Our factory is located in Chaohua Town, Xinmi City, Henan Province, China, a major refractory production base.
Are you a manufacturer or trading company?
We are a direct manufacturer with integrated production and export capabilities.
Do you have your own production facilities?
Yes, we operate modern production lines for refractory bricks, monolithic materials, ceramic fiber products, and kiln furniture.
Can we visit your factory?
Yes, factory visits are welcome by appointment, and we can arrange technical discussions onsite.
Do you support factory audits?
Yes, we support third-party factory audits and customer inspections.
Do you have export experience?
Yes, we export to multiple countries across Asia, Europe, the Middle East, Africa, and the Americas.
Do you provide OEM service?
Yes, we support OEM production based on customer specifications and branding requirements.
What certifications do you have?
We follow international quality standards and can provide relevant testing reports upon request.
Do you have in-house quality control?
Yes, we have a strict quality control system covering raw materials to finished products.
How long has Kerui Refractory been in operation?
We have many years of manufacturing experience in refractory materials and thermal insulation products.
What is your production capacity?
Our production capacity varies by product category and supports bulk industrial orders.
Do you keep regular sizes in stock?
Yes, standard sizes of common refractory products are often available for quick shipment.
Can standard products be shipped immediately?
If stock is available, regular size products can be arranged for prompt dispatch.
How long is the production time for customized products?
Customized products require production scheduling depending on specifications and order quantity.
What is your typical lead time?
Lead time depends on product type and quantity, usually ranging from several days to a few weeks.
Can you handle urgent orders?
Yes, urgent orders can be arranged after communication to adjust production schedules.
How do you arrange production scheduling?
Production is scheduled according to order confirmation, technical requirements, and current factory workload.
What is your minimum order quantity?
Minimum order quantity varies by product type and can be discussed based on customer needs.
Do you offer samples?
Yes, samples can be provided for quality evaluation.
How long does sample preparation take?
Sample preparation time depends on product availability and customization requirements.
Do you charge for samples?
Sample policy depends on product type and quantity; details can be discussed.
How are products packaged for export?
Products are packed in export-standard packaging such as pallets, cartons, or wooden crates.
Can you provide customized packaging?
Yes, packaging can be customized based on customer requirements.
What shipping methods do you use?
We arrange sea freight, rail freight, or other shipping methods based on destination and urgency.
Do you handle export documentation?
Yes, we prepare necessary export documents including packing list and commercial invoice.
Can you assist with logistics coordination?
Yes, we coordinate closely with freight forwarders to ensure smooth shipment.
How long does shipping take?
Shipping time depends on destination country and transport method.
Do you support FOB terms?
Yes, we commonly support FOB and other international trade terms.
Can you provide CIF quotations?
Yes, we can provide CIF pricing upon request with destination details.
What payment terms do you accept?
Payment terms can be negotiated, commonly including T/T or other agreed methods.
Do you require deposit before production?
For customized orders, a deposit is generally required before production.
How do you ensure product consistency?
We implement strict raw material inspection and batch quality testing.
Do you test products before shipment?
Yes, finished products undergo inspection and testing before delivery.
Can you provide test reports?
Yes, we provide physical and chemical testing reports upon request.
Do you offer technical support?
Yes, our technical team provides product selection and application guidance.
Can you provide installation guidance?
Yes, installation recommendations can be shared according to product type.
What industries do you mainly serve?
We serve steel, cement, glass, ceramics, power generation, and petrochemical industries.
Are you located near raw material sources?
Yes, our factory is located in a major refractory raw material production region.
What advantages does your location provide?
The location ensures stable raw material supply and competitive production costs.
How do you control delivery delays?
We monitor production progress closely and communicate proactively with customers.
What happens if production is delayed?
We inform customers promptly and adjust schedules to minimize impact.
Can you split shipments?
Yes, partial shipments can be arranged if required.
Do you support long-term cooperation agreements?
Yes, we welcome long-term supply partnerships.
Can you lock pricing for long-term contracts?
Long-term pricing arrangements can be discussed based on order volume.
Do you provide after-sales service?
Yes, we provide responsive after-sales support.
How do you handle quality complaints?
We investigate thoroughly and provide appropriate solutions promptly.
Can you customize product specifications?
Yes, we manufacture according to customer drawings or technical parameters.
What information is needed for quotation?
We require product type, size, quantity, temperature grade, and application details.
Do you provide engineering solutions?
Yes, we can assist with refractory lining design and material selection.
Are your products suitable for international markets?
Yes, our products are exported globally and meet industrial standards.
Can you provide private label branding?
Yes, private label branding is available upon request.
How large is your factory?
Our factory covers a large production area with multiple manufacturing workshops.
Do you have automated production lines?
Yes, we utilize modern equipment to ensure efficiency and consistency.
What is your annual export volume?
Our export volume varies yearly depending on global demand and projects.
Do you accept small trial orders?
Yes, small trial orders are welcome for initial cooperation.
How do you protect customer confidentiality?
We respect confidentiality and do not disclose customer project information.
Can you provide photos or videos of production?
Yes, production progress updates can be shared with customers.
Do you support customized labeling?
Yes, labels can include customer brand and product details.
How do you manage large project orders?
We allocate dedicated production planning and quality supervision for major projects.
What is your response time for inquiries?
We aim to respond to customer inquiries promptly.
Do you provide technical data sheets?
Yes, technical data sheets are available for each product category.
Are you able to produce according to international standards?
Yes, we can manufacture according to customer-required standards.
Do you have warehouse facilities?
Yes, we maintain warehouse space for finished goods and raw materials.
Can you consolidate multiple products in one shipment?
Yes, we can consolidate different refractory products into one shipment.
What is your advantage compared to traders?
As a manufacturer, we offer direct pricing, stable quality, and flexible production control.
Do you participate in international exhibitions?
Yes, we actively participate in industry exhibitions to connect with global customers.
How do you ensure safe loading?
We follow export packing standards and supervise container loading carefully.
Can you provide certificate of origin?
Yes, we can provide certificate of origin as required.
What languages does your sales team support?
Our team supports communication in English and other required languages.
How can customers contact Kerui Refractory?
Customers can contact us via email, phone, or official website inquiry forms.
Do you provide tracking for shipments?
Yes, we provide tracking details once the shipment leaves the factory.
What is the typical transit time for sea freight?
Transit time varies by destination, usually 20–45 days depending on port and route.
Do you support air freight for urgent orders?
Yes, air freight can be arranged for urgent shipments.
Can you provide EXW quotations?
Yes, we can provide EXW (Ex Works) pricing from our factory.
Do you offer DDP delivery?
Yes, we can arrange DDP (Delivered Duty Paid) depending on customer requirements.
How do you handle customs clearance?
We provide complete documentation to facilitate smooth customs clearance.
Do you have a dedicated export team?
Yes, our export team coordinates all international orders and logistics.
Can you assist with local shipping in the destination country?
Yes, we can recommend reliable local freight partners.
How do you manage peak production periods?
We plan production in advance and adjust shifts to meet demand.
Do you produce products in batches?
Yes, production is organized in batches based on product type and order volume.
Can customers inspect products before shipment?
Yes, we welcome pre-shipment inspections by customers or third parties.
What is your policy for defective products?
Defective products are investigated, and replacement or credit solutions are provided promptly.
Do you offer warranties?
Yes, warranty terms are provided depending on product type and application.
Can you handle rush production requests?
Yes, urgent production requests can be prioritized after discussion.
Do you maintain inventory of raw materials?
Yes, we keep sufficient raw materials to avoid production delays.
What raw materials do you use?
We use high-quality bauxite, alumina, silica, magnesia, silicon carbide, and other refractory minerals.
How do you control raw material quality?
Raw materials undergo strict inspection, chemical analysis, and performance testing.
Do you produce multiple product lines simultaneously?
Yes, our factory has separate production lines for bricks, monolithic materials, fibers, and kiln furniture.
How do you ensure order accuracy?
Orders are confirmed with technical specifications, drawings, and internal checklists.
Can we order mixed product types in one batch?
Yes, we can produce and ship multiple product types together.
Do you offer consultation on product selection?
Yes, our technical team can recommend suitable products for specific applications.
How do you manage production delays due to equipment maintenance?
We schedule preventive maintenance to minimize impact on delivery.
Do you provide production progress updates?
Yes, regular updates can be shared with customers during manufacturing.
How are urgent orders communicated?
Customers can contact our sales team directly to discuss priority scheduling.
Do you produce according to customer drawings?
Yes, custom drawings and dimensions are supported.
Can you provide 3D or CAD models?
Yes, technical drawings or CAD files can be shared for complex designs.
How do you calculate production time for custom products?
Time is estimated based on size, quantity, complexity, and current factory schedule.
Can you produce prototype orders?
Yes, small prototype batches are possible for testing and approval.
How do you manage quality for prototype runs?
Same QC standards are applied to prototypes as to full production.
Do you produce products for different firing temperatures?
Yes, we manufacture products for various temperature ranges, from low to ultra-high.
What is your approach for large-volume orders?
Large orders are planned carefully with staged production and logistics coordination.
Do you provide product identification tags?
Yes, tags with product specifications and batch numbers can be included.
Can we get a production schedule before order confirmation?
Preliminary schedule can be shared based on inquiry and technical details.
Do you offer technical training for installation?
Yes, we provide guidance and training for proper installation and use.
How do you handle seasonal fluctuations in demand?
We adjust production shifts and inventory planning to accommodate seasonal changes.
Do you have backup production capacity?
Yes, backup lines and equipment allow us to handle urgent and large orders.
How do you communicate with international customers?
Via email, phone, video call, and online messaging for timely updates.
Do you provide multilingual support?
Yes, English is standard, and other languages are supported as needed.
What is the procedure for order confirmation?
Orders are confirmed with quotation approval, technical specification verification, and deposit payment if required.
Can you adjust production order based on changes from customer?
Yes, minor changes can be accommodated if communicated promptly.
Do you provide certificates for material compliance?
Yes, chemical and physical compliance certificates are provided upon request.
How is product labeling handled for export?
Labels include product type, batch number, and customer information if requested.
Can you handle multi-destination shipments?
Yes, we can split shipments to multiple ports or addresses.
Do you produce ready-to-ship standard products?
Yes, common sizes and grades are kept in stock for immediate dispatch.
Do you offer volume discounts?
Yes, discounts are available for bulk orders.
How do you manage order priority?
Orders are prioritized based on urgency, stock availability, and customer agreement.
Do you maintain records of previous orders?
Yes, historical orders are recorded for reference and repeat orders.
Can you handle confidential projects?
Yes, we strictly maintain customer confidentiality for sensitive orders.
What are your factory working hours?
Our production and administrative teams operate standard weekday hours, with flexibility for urgent matters.
How do you handle custom duty and taxes?
We can provide guidance and documentation for duties, and DDP shipping is available.
Can we schedule a production visit?
Yes, production visits can be scheduled with prior notice.
Do you offer product recommendations for new applications?
Yes, our technical team can suggest suitable products for novel applications.
Do you provide online order tracking?
Yes, shipment and order status can be tracked via email updates and logistics tracking.
Can we arrange regular shipments?
Yes, long-term supply agreements and scheduled shipments are supported.
Do you have backup suppliers for raw materials?
Yes, multiple raw material sources ensure stable production.
How do you handle international payment?
We accept T/T, L/C, and other mutually agreed payment methods.
Can you assist with customs clearance documents?
Yes, we provide full documentation including packing list, invoice, and certificate of origin.
Do you offer consultation for logistics optimization?
Yes, we provide advice on cost-effective shipping and packaging solutions.
How do you manage urgent replacement orders?
Urgent replacements are prioritized and expedited in production and shipment.
Do you provide customer support after delivery?
Yes, we offer continuous support for product performance and installation issues.
How can we communicate urgent requests?
Contact our sales or technical team directly via phone or email for immediate attention.
Do you maintain a database of product specifications?
Yes, detailed product specifications are maintained for reference and quality control.
Can you assist with export licensing?
Yes, we provide necessary support for export compliance.
Do you provide environmental compliance documentation?
Yes, materials comply with international environmental regulations, and certificates can be provided.
How do you handle seasonal demand spikes?
We increase production shifts and inventory to ensure supply during peak seasons.
Do you offer flexible shipment dates?
Yes, shipment schedules can be adjusted according to customer needs.
Can we combine multiple orders into one shipment?
Yes, multiple orders can be consolidated to optimize shipping costs.
Do you provide product manuals?
Yes, technical manuals or installation instructions are included with shipments.
How do you ensure timely delivery?
Through careful planning, proactive communication, and production monitoring.
Can we request expedited production?
Yes, expedited production is available upon prior discussion and feasibility check.
Do you provide post-sale technical advice?
Yes, our technical team is available for consultation after delivery.
Can we adjust order quantities after confirmation?
Minor adjustments are possible if communicated promptly and production allows.
How do you manage bulk export orders?
Through staged production, quality checks, and coordinated logistics for smooth delivery.
Do you provide product recommendations for cost saving?
Yes, we can suggest optimized materials or sizes to reduce cost without compromising quality.
How do you handle urgent replacements in case of damage?
We arrange rapid production and shipment to minimize downtime for customers.
Do you provide product storage recommendations?
Yes, guidance is given to prevent moisture, contamination, or mechanical damage during storage.
Can you provide multiple payment options for bulk orders?
Yes, flexible payment arrangements can be negotiated for large projects.
