Mullite Bricks

Both are alumina-silica refractories, but mullite brick is built around the stable mullite crystal phase (3Al₂O₃·2SiO₂), giving it far better creep resistance and volume stability under sustained load at high temperature. High alumina brick covers a wider Al₂O₃ range and is more general-purpose. Choose mullite where bricks must hold their shape under load for years, such as hot-blast stove checkers.

Mullite bricks (60–75% Al₂O₃) are used up to about 1750°C, with PCE values around SK 37–38. Their defining strength is low creep, they resist slow deformation under load at temperature better than ordinary high-alumina brick, which is why they are preferred for load-bearing structures like blast furnace stoves and kiln car decks.

The main applications are blast furnace hot-blast stove checkerwork, glass furnace regenerators, ceramic kiln furniture and setter plates, petrochemical reformer furnaces, and steel ladle safety linings. Anywhere dimensional stability and creep resistance under long-term high-temperature load are critical, mullite is the preferred choice.

CUMILITE is CUMI Super Refractories’ brand name for its mullite and andalusite-based refractory range. Shanker Agencies is an authorised CUMI dealer and supplies CUMILITE mullite bricks (M-60 to M-72 grades) along with equivalent Calderys and TRL Krosaki grades, matched to your stove or kiln drawing.

Yes. Shanker Agencies is an authorised CUMI dealer and supplies CUMILITE mullite bricks pan-India from Delhi, with export to GCC and ASEAN. Every dispatch ships with a manufacturer test certificate.