Classification and application of mullite insulation brick

Posted by adela li on January 12th, 2017

Mullite insulation brick classification:
Mullite insulation brick according to the density of different light and heavy mullite bricks, according to the different temperature is mainly divided into: 1350 mullite bricks, 1450 mullite bricks, 1550 mullite bricks, etc.

Mullite insulation refractory brick performance and its application:
Refractoriness is high, up to 1790 ℃ or more. The softening start temperature of the load is 1600 to 1700 ° C. Room temperature compressive strength of 70 ~ 260MPa. Thermal shock resistance is good. There are sintered mullite bricks and fused mullite high insulating brick. Sintered Refractory company mullite brick to bauxite clinker as the main raw material, adding a small amount of clay or bauxite as binder, by molding, firing and made. Fused mullite bricks to high bauxite, industrial alumina and refractory clay as raw materials, by adding charcoal or coke fine particles as reducing agent, forming after the use of reduced melting method to manufacture. The fused mullite is more crystalline than the sintered mullite and has a better thermal shock resistance than the sintered product. Their high temperature properties depend mainly on the alumina content and the homogeneity of the mullite phase with the glass distribution. Mainly used for hot stove top, blast furnace and the bottom of the furnace, glass furnace regenerator, ceramic sintering kiln, oil cracking system, such as dead angle lining.