Blast Furnace
Ironmaking furnace operating under high temperature, abrasion, molten iron and slag attack. Refractory selection varies significantly from the throat and shaft to the tuyere, hearth and bottom.
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Get PriceIronmaking furnace operating under high temperature, abrasion, molten iron and slag attack. Refractory selection varies significantly from the throat and shaft to the tuyere, hearth and bottom.
High-temperature steelmaking converter exposed to molten steel, basic slag, oxygen blowing and severe thermal shock. Magnesia-carbon refractories are widely used in critical zones.
Electric arc steelmaking furnace exposed to extreme heat, arc radiation, slag corrosion and repeated thermal cycling. Magnesia-carbon refractories are commonly used in the working lining.
Molten-steel vessel requiring multilayer refractory linings for thermal insulation, slag resistance, impact resistance and protection of the steel shell.
High-temperature furnace used to heat billets, slabs or blooms before rolling. Refractories must withstand thermal cycling, furnace atmosphere and mechanical wear.
Blast furnaces operate continuously under high temperature, mechanical wear, molten iron, slag attack and gas erosion. Refractory selection depends on the specific operating zone.
BOF converters are exposed to molten steel, highly basic slag, oxygen blowing, thermal shock and mechanical impact. Magnesia-carbon brick is the main refractory material for critical working zones.
Electric arc furnaces experience extreme temperatures, intense arc radiation, slag corrosion, localized hot spots and repeated thermal cycling.
Steel ladles use multilayer refractory linings to protect the steel shell and maintain molten-steel temperature while resisting slag corrosion, thermal shock and mechanical impact.
Reheating furnaces heat billets, slabs or blooms before rolling. Refractory materials must withstand high temperature, thermal cycling, mechanical wear and furnace atmosphere.
| Equipment | Main Refractory Concern | Typical Materials | What to Specify |
|---|---|---|---|
| Blast Furnace | Wear, slag/alkali attack, CO attack | High Alumina · Corundum · SiC · Carbon | Area + temperature + wear condition |
| BOF Converter | Slag corrosion, oxidation, thermal shock | MgO-C Brick · Gunning Mix | MT grade + MgO/C + application zone |
| EAF | Basic slag, oxygen blowing, thermal shock | MgO-C · Magnesia · Ramming Mix · Castable | Furnace capacity + hot spot + lining zone |
| Steel Ladle | Severe slag-line corrosion, thermal shock | MgO-C · High Alumina · Spinel Castable | Ladle capacity + refining process + slag line |
| Reheating Furnace | Thermal cycling, abrasion, scale attack, heat loss | High Alumina Castable · Mullite · Ceramic Fiber | Furnace type + zone + operating temperature |
Magnesia-carbon bricks, alumina-magnesia carbon bricks, magnesia bricks, high alumina bricks, carbon bricks, silicon carbide refractories, castables and insulating refractories are commonly used in steelmaking equipment.
Magnesia-carbon brick is widely used in the BOF working lining, especially in the slag line and other high-temperature areas exposed to basic slag and thermal shock.
High-performance magnesia-carbon brick is commonly used in the steel ladle slag line because this area experiences severe slag corrosion and thermal cycling.
Both require strong resistance to slag corrosion and thermal shock. BOF converters are mainly exposed to oxygen blowing and basic slag, while EAFs experience intense arc radiation, localized hot spots and repeated thermal cycling.
Carbon bricks, microporous carbon bricks and other carbon-based refractories are commonly used in blast furnace hearth and bottom areas because of their resistance to molten iron and long-term high-temperature service.
Refractory selection depends on the equipment type, application zone, operating temperature, slag chemistry, steel grade, mechanical conditions, existing lining and required service life.