Basalt fiber furnaces operate under high-temperature melting conditions and are continuously exposed to molten basalt erosion, iron-rich slag attack, thermal shock, and chemical penetration. Compared with conventional glass furnaces, basalt melting furnaces usually face more aggressive corrosion conditions because basalt raw materials contain higher FeO, CaO, and mineral impurities.
As a professional refractory manufacturer, Kerui Refractory provides customized refractory solutions for basalt fiber furnaces, including melting tank refractories, furnace roof insulation systems, slag-resistant lining materials, and furnace repair support.
Key Damaged Areas in Basalt Fiber Furnaces
| Furnace Area | Main Damage Mechanism | Recommended Refractory Materials |
| Charging Area | Impact, abrasion, thermal shock | High Alumina Brick / Phosphate Bonded High Alumina Brick / Wear Resistant Castable |
| Furnace Roof | Thermal stress, heat loss | Silica Brick / Mullite Brick / Ceramic Fiber Module |
| Melting Zone | Molten basalt erosion, chemical penetration | High Chrome Brick / AZS Brick / Corundum Castable |
| Slag Line | Severe slag corrosion | High Chrome Brick / Direct Bonded Magnesia Chrome Brick |
| Burner Area | Flame erosion, thermal cycling | Mullite Castable / Low Cement Castable / Andalusite Brick |
| Throat Area | Gas erosion, dust attack | Silicon Carbide Brick / Mullite Brick |
| Tapping Area | Molten flow erosion | Silicon Carbide Brick / Corundum Brick |
| Flue System | Heat loss, gas erosion | Insulating Fire Brick / Ceramic Fiber Blanket |
Charging Area
The charging area is subjected to continuous impact from basalt raw materials and repeated thermal shock caused by cold feeding operations.
- High Alumina Brick: good mechanical strength and thermal shock resistance under impact conditions
- Phosphate Bonded High Alumina Brick: excellent abrasion resistance in continuous feeding environments
- Wear Resistant Castable: suitable for high-impact and high-abrasion zones
Furnace Roof
The furnace roof experiences long-term high-temperature radiation and thermal cycling during continuous furnace operation.
- Silica Brick: stable performance under long-term high-temperature conditions
- Mullite Brick: balanced thermal shock resistance and structural stability
- Ceramic Fiber Module: excellent thermal insulation and reduced heat loss
Melting Zone
The melting zone is directly exposed to molten basalt and severe chemical corrosion caused by iron-rich mineral melts.
High Chrome Brick: excellent resistance to aggressive slag corrosion and molten penetration
AZS Brick: strong resistance to chemical attack and molten erosion
Corundum Castable: high-temperature strength and excellent wear resistance
Slag Line
The slag line area suffers from continuous slag attack and rapid chemical erosion due to fluctuating molten material conditions.
High Chrome Brick: strong resistance to FeO-rich slag corrosion
Direct Bonded Magnesia Chrome Brick: excellent structural stability under severe slag conditions
Low Cement Castable: high density and low porosity against slag penetration
Burner Area
The burner area is exposed to direct flame impact and rapid temperature changes.
- Mullite Castable: strong thermal shock resistance under flame exposure
- Low Cement Castable: improved resistance to thermal cycling
- Andalusite Brick: excellent crack resistance and thermal stability
Tapping Area
The tapping area continuously contacts molten basalt flow and severe mechanical erosion.
- Silicon Carbide Brick: excellent molten erosion resistance
- Corundum Brick: high hardness and wear resistance
- High Strength Castable: suitable for continuous abrasion conditions
Technical Support for Basalt Fiber Furnaces
Kerui Refractory provides customized refractory solutions for basalt fiber furnace projects, including:
- Furnace lining design for new projects
- Refractory selection optimization
- Slag corrosion analysis
- Furnace repair and maintenance solutions
- Service life improvement recommendations
To provide accurate technical support, the following information is recommended:
| Required Information | Description |
| Furnace Condition | New project / Repair / Retrofit |
| Furnace Type | Electric melting furnace / Tank furnace |
| Furnace Dimensions | Furnace size and lining thickness |
| Operating Temperature | Working temperature range |
| Raw Materials | Basalt composition and additives |
| Current Refractory | Existing lining materials |
| Main Problems | Corrosion, cracking, erosion, short service life |
| Damaged Area | Melting zone, slag line, roof, etc. |
Based on the provided information, Kerui Refractory can recommend suitable refractory materials and complete furnace lining solutions.
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