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Classification and characteristics of light weight mullite insulation brick

Apr. 02, 2018

Lightweight mullite insulation brick is light and has good thermal insulation performance. It is light mullite products produced with high quality high purity refractory powder, according to the product requirements, add organic compound filler, through vacuum extrusion molding, and high temperature sintering.

Classification of lightweight mullite insulation brick: sintered mullite brick and electric fused mullite brick.Sintered mullite bricks are produced with high bauxite clinker as main raw material and a small amount of clay or bauxite as a binder.And through molding and sintering the bricks are produced.Electric fused mullite bricks are made of high bauxite, industrial alumina and refractory clay, adding charcoal or coke fine grain as reducing agent. After molding, reduction electric fusion method is used to make it. The crystallization ratio of the electric fused mullite brick is larger than that of sintered mullite, and the thermal shock resistance is better than the sintering product. Their high temperature performance mainly depends on the content of alumina and the uniformity of the mullite phase and glass phase distribution.

Characteristics of lightweight mullite insulation bricks

1. Low thermal conductivity, low heat capacity.

2. High purity, low impurities

3. High temperature resistance, can touch fire directly.

4. High strength, has very good thermal shock resistance.

Lightweight mullite insulation bricks are applicable to various industrial furnaces lining and backing of metallurgy, petrochemical, building materials, ceramics, machinery etc. Such as: cracking furnace,conversion furnace, heating equipment, refining device, regeneration device, hot blast stove, heating furnace, soaking furnace, heat treatment furnace, resistance furnace, tunnel kiln, roller kiln, bell kiln, glass tank furnace, etc.

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