The iron runner guides blast-furnace hot metal to ladles; its slag line endures alternating metal/slag scouring, with Al2O3-SiC-C castable throughput being the key metric.
Problem-by-problem analysis with solutions and recommended refractories
Background The main trough of a blast furnace cast house is the core channel for slag-ir…
Problem Details →Background The swing spout sits at the end of the main trough and distributes iron to la…
Problem Details →
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.
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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.
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SiC wear-resistant castable with SiC≥50% aggregate offers extreme hardness and erosion resistance to 1600℃. High thermal conductivity promotes slag-coating self-protection. For CFB boiler cyclone barrels and cones, loop seals, copper flash furnace cones, launders and elbows under heavy wear.
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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.
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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.
Learn More →The blast furnace is the core ironmaking unit; linings face 1100–1500°C heat, slag/metal attack and alkali damage, with long campaigns relying on hearth ceramic cups and bosh cooling staves.
View Problems & Solutions →The hot metal ladle transports and holds molten iron; its bottom suffers impact and its slag line suffers slag attack, making it one of the most frequently relined refractory zones.
View Problems & Solutions →The hot blast stove preheats blast air to 1150–1300°C via checker bricks; checker service life and hot-blast main lining integrity determine achievable wind temperatures.
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