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.
Problem-by-problem analysis with solutions and recommended refractories
Background The blast furnace hearth stores hot metal and slag. Hearth carbon bricks dire…
Problem Details →Customer Question During BF mid-repair brick ordering, the most common question is: "Wha…
Problem Details →
BF hearth carbon blocks including micropore and semi-graphite grades offer high thermal conductivity and strong resistance to molten iron penetration, key to long-lasting blast furnace bottoms and hearths.
Learn More →
Corundum brick with Al₂O₃≥99% and refractoriness ≥2000℃ is chemically pure, resisting high temperature and gas/dust scouring—the premium refractory for critical hot zones.
Learn More →
Al₂O₃-SiC-C composite brick for hot metal ladle, torpedo ladle and iron ladle working lining; excellent slag erosion resistance, thermal shock resistance and scouring resistance – recommended choice for slag line
Learn More →
High-alumina brick LZ-65 (Al₂O₃≥65%, refractoriness ≥1790℃) has a higher corundum/mullite phase ratio for stronger slag resistance, higher temperature rating and better hot load-bearing capacity.
Learn More →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.
View Problems & Solutions →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.
View Problems & Solutions →
WeChat · 17513376789