Classification of Mullite Insulation Brick
Mullite insulation brick is a kind of quality refractory materials that are widely used in newly developed industry with their features of even expansion, good thermal shock resistance, high refractoriness under load, low high-temperature creep value, high hardness, and good chemical erosion resistance. Mullite refractory brick can be classified into mullite bricks and heavy mullite bricks according to different densities. But do you know anout classification of mullite insulation brick, follow me.
According to Manufacture Process
Sintered mullite brick is manufactured by adopting high alumina bauxite as the main raw material and adding a small amount of clay or raw bauxite as the binding agent through molding and firing.
Fused mullite bricks are made of high bauxite, industrial alumina and fireclay as the raw materials and adding charcoal or coke fine stuff as the reducing agent through carbothermic electric melting method after molding.
According to Structure Property
mullite insulation brick is made of mullite as the principal crystalline phase with 65~75% alumina content. It is widely used for lining and back lining of various furnaces in metallurgy and petrochemical industries.
Mullite insulation brick is made of tiny air space similar to honeycomb that the bricks have an excellent insulating property. Mullite insulating bricks are used in a wide ranges industrial furnace and kilns such as for hot face furnace lining or outer back-up heat lining insulation.
Zirconia mullite brick is made of high quality mullite sand and zircon powder as the main raw materials, molded through high pressure and fired under high temperature. Zirconia mullite brick has features of high bulk density, high strength, good thermal shock resistance.
Above is the classification of mullite insulation brick, have professional engineers and advanced production technology. Trust us and welcome to buy all kinds of mullite brick from our company. If you have any need about mullite insulation brick, contact us for free.
