Products
Ladle Refractories
Lining concepts and functional products for steel ladles — engineered around your treatment practice and cost per heat.
From slag line to safety lining, Hofai designs complete ladle concepts matched to secondary metallurgy (LF, VD/VOD, RH). Zoned linings balance wear life across slag line, metal zone and bottom, lowering total refractory cost per tonne of steel.
Product range
MgO-C Slag Line Bricks
Fused-magnesia based bricks with graphite and antioxidants for aggressive LF slags.
- C content 10–14%
- High corrosion and oxidation resistance
Al₂O₃-MgO-C Bricks
Wall and bottom bricks with in-situ spinel formation for long campaigns and clean steel.
- Volume-stable under thermal cycling
- Excellent penetration resistance
Purging Plugs
Slit- and segment-type corundum-spinel purging plugs for argon stirring.
- Stable gas flow, high blow-through rate
- Safe residual-thickness indication
- Matching well blocks available
Well & Seat Blocks
Precast corundum-spinel blocks for purging plugs and slide-gate nozzles.
- Pre-fired precision fit
Ladle Castables
Corundum-spinel low-cement castables for monolithic ladle linings and repairs.
- Self-flow and vibration grades
- Fast dry-out formulations
Slide Gate Refractories
Plates, upper/lower nozzles and well blocks — see also Flow Control.
- System-matched sets
Typical properties
Typical values for reference only — detailed datasheets available on request.
| Property | MgO-C 12% | Al₂O₃-MgO-C | Corundum-spinel castable | Purging plug |
|---|---|---|---|---|
| Al₂O₃ (%) | — | ≥ 70 | ≥ 90 | ≥ 92 |
| MgO (%) | ≥ 80 | 5–8 | 4–6 | spinel bonded |
| C (%) | 12 | 5–8 | — | — |
| Bulk density (g/cm³) | ≥ 2.95 | ≥ 3.00 | ≥ 3.00 | ≥ 3.10 |
| CCS (MPa) | ≥ 35 | ≥ 40 | ≥ 60 (110 °C) | ≥ 80 |
| Service temp. (°C) | 1700 | 1700 | 1750 | 1750 |
Applications
Steel ladles for LF, VD/VOD and RH secondary metallurgy; slag line, metal zone, bottom and impact area; argon stirring and casting functions. Zoned lining design and on-site supervision available.