Al2O3-SiC-C iron runner castable is made of high-grade bauxite clinker with SiC and carbon additives, offering excellent slag resistance, erosion resistance and thermal shock stability for blast furnace main troughs to achieve long service life.
| Chemical composition Al₂O₃ | ≥55% |
|---|---|
| Chemical composition SiC | ≥10% |
| Chemical composition C | ≥1.5% |
| Bulk density (110℃×24h) | ≥2.75 g/cm³ |
| CCS (110℃×24h) | ≥25 MPa |
| CCS (1450℃×3h) | ≥45 MPa |
| PLC (1450℃×3h) | ±0.5% |
| Max. service temperature | 1500℃ |
Al₂O₃-SiC-C iron runner castable (ASC castable) is a monolithic refractory for blast furnace iron troughs made of super-grade bauxite clinker as the main aggregate, with silicon carbide (SiC) and carbon materials added and a composite bond system. SiC gives the material excellent resistance to molten iron erosion and slag attack, while carbon significantly improves non-wetting behavior and thermal shock stability, making ASC castable the core material for long-life main troughs, iron runners and slag runners.
Under normal operating conditions with quality ASC castable and proper maintenance, main trough throughput generally reaches 200,000–300,000 tonnes; the actual value depends on tapping temperature, slag basicity and maintenance level.
Control water addition, ensure thorough vibration and air release; after installation, dry slowly along the heating curve to avoid explosive spalling from rapid heating; timely repair of the slag-line area significantly extends life.
Yes. We support monolithic or segmented precasting of main troughs to shorten on-site installation time and reduce production losses.
Ordinary high-alumina trough castable typically achieves 80,000–120,000 tonnes; ASC castable usually improves throughput by more than 50% thanks to stronger slag and erosion resistance.
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Iron runner castable purpose-built for blast furnace troughs with Al₂O₃≥65%, SiC+C≥15% and 1550℃ max service. Resists continuous erosion by hot iron and slag. For main trough working linings, branch runners, swing spouts, slag runners and trough covers—the core refractory of the cast house.
Max. Service Temp.1550℃
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Swing spout castable is dedicated to the curved linings of blast furnace swing spouts, Al₂O₃≥60%, 1500℃ max service. Sharing the Al₂O₃-SiC-C system with runner castables, it withstands continuous high-velocity iron flow and abrasion for swing spout linings, launders to ladles and small runners.
Max. Service Temp.1500℃
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Magnesia-alumina spinel castable is an alkaline monolithic refractory made of fused magnesia and alumina-magnesia spinel, offering excellent slag resistance and thermal shock resistance for steel ladle and hot metal ladle working linings.
Chemical composition MgO≥55%
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LA-60 high-alumina castable uses bauxite clinker aggregate with Al₂O₃≥60% and a max service temperature of 1600℃. Its low-cement bond gives high density and good thermal-shock resistance.
Max. Service Temp.1600℃
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