Primary steel-making · BOF · EAF · Ladle · Tundish
Refractories for Steel & Foundry Industry
BOF, EAF, ladle, tundish, continuous casting and reheating zones each demand different refractory chemistry. Steel slag is fundamentally basic, so refractories that work in a cement kiln will not survive a converter. A BOF slag-line wants magnesia-carbon; a tap-hole wants high-alumina precast; a tundish wants alumina-graphite with a magnesia ramming mix. firebrickssource.com — a Rajkot, Gujarat, India based manufacturer-cum-merchant exporter — supplies the full slag-line and back-up refractory portfolio for primary steel-making and foundries, matched zone-by-zone to your operating profile. We work with steel mills, mini-mills and induction-furnace foundries across Asia, the Middle East, Africa and Latin America, supplying refractory bricks, precast shapes and ramming masses on a per-campaign or annual-tender basis.
Wear mechanisms · Steel-making
Pain points in steel and foundry refractories
Slag erosion in BOF/EAF slag-line
Basic FeO-rich slag dissolves silica and alumina refractories within hours. Solution: magnesia-carbon (MgO-C) bricks with 10 – 18% residual carbon.
Thermal shock at tap-hole & lance ports
Rapid metal-stream cooling cracks dense bricks. Solution: high-alumina precast tap-hole sleeves or MgO-C inserts.
Mechanical impact at trunnion & bottom
Charging impacts and bottom-blowing wear out the working lining. Solution: dense fired magnesia bricks with high CCS.
Ladle wear & argon permeability
Slag-line cycling, argon stirring and FeO pickup attack ladle linings. Solution: alumina-magnesia spinel back-up plus alumina-graphite well-blocks.
Matched refractory products
Recommended refractories for steel & foundry
Magnesia-Carbon (MgO-C) Bricks
10 – 18% residual carbon. BOF/EAF slag-line, ladle slag-line. Excellent slag and thermal-shock resistance.
Fired Magnesia Bricks
Direct-bonded magnesia for BOF bottom, EAF walls and hot spots. Mechanical strength and erosion resistance.
80 – 90% High-Alumina
Ladle back-up, slag-line back-up, soaking-pit walls. RUL above 1500 °C with strong creep resistance.
Tap-hole Sleeves & Inserts
High-alumina precast and MgO-C combinations sized to your converter and ladle tap geometry.
Custom Precast Shapes
Burner blocks, well-blocks, purging plugs and impact pads — drawn and supplied to your furnace drawings.
Magnesia-Chrome Bricks
Fused-grain magnesia-chrome for severe ladle slag-line and AOD/VOD secondary-refining applications.
Zone-by-zone specification
Application zones — steel & foundry
| Furnace zone | Recommended brick | Temperature °C | Key property |
|---|---|---|---|
| BOF slag line | MgO-C | 1700 | Slag resistance |
| BOF bottom | Fired magnesia | 1700 | Mechanical strength |
| EAF hot spots | MgO-C | 1750 | Thermal shock |
| EAF walls | Fired magnesia | 1700 | Erosion resistance |
| Ladle slag line | MgO-C | 1650 | Slag + thermal cycling |
| Ladle back-up | High-alumina 80% | 1500 | Insulation + strength |
| Tundish | Alumina-graphite + MgO ramming | 1600 | Anti-clogging |
| Tap-hole | High-alumina precast / MgO-C | 1800 | Erosion to metal stream |
Related categories
Adjacent product families
Need the full basket — basic refractories, high-alumina and shapes — for a steel-plant tender? Browse basic refractories, high-alumina bricks, special shapes and the parent product index, or return to industries.
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