Andalusite Bricks

Andalusite bricks are made from the natural mineral andalusite, which converts to mullite plus a siliceous phase when fired, a reaction called mullitisation. This in-situ reaction gives excellent volume stability and low creep, so the bricks hold their dimensions through repeated thermal cycles. They are an economical step up from fireclay where stability matters.

Andalusite bricks (55–63% Al₂O₃) are used up to about 1600°C, with PCE around SK 35–36. They combine good refractoriness with strong volume stability and thermal shock resistance, making them well suited to reheating furnaces, hot-blast stoves and ceramic kilns that cycle frequently.

Choose andalusite where you need excellent volume stability and low creep at moderate temperatures (up to ~1600°C) at a lower cost than 70%+ high-alumina brick, for example reheating furnace hearths, stove zones and ceramic kilns. For higher temperatures or severe slag duty, step up to high-alumina or mullite grades.

Typical applications are blast furnace hot-blast stoves, reheating furnace hearths and walls, ceramic and sanitaryware kilns, cement preheater and riser ducts, steel ladle safety linings, and petrochemical heater linings. They are favoured wherever bricks must stay dimensionally stable through thermal cycling.

Yes. Shanker Agencies supplies CUMI CUMILITE andalusite bricks and Calderys equivalents pan-India from Delhi. We help you choose between andalusite and high-alumina based on your duty cycle, temperature and budget.