Corundum-mullite brick

Corundum mullite is made from high-purity corundum ore and mullite raw materials by mixing, moldings, drying and sintering in an oven.

Parameters of corundum-mullite brick

Subject	Index
	GMZ-88	GMZ-85	GMZ-80	GMZ-75
Al₂O₃ %	≥88	≥85	≥80	≥75
Fe₂O₃ %	≤0.6	≤0.8	≤1.0	≤1.2
Apparent porosity %	≤15	≤16	≤17	≤18
Bulk density g/cm³	≥3.0	≥2.9	≥2.8	≥2.65
Cold crush strength MPa	≥125	≥110	≥100	≥80
0.2Mpa Fire resistance under load ℃	≥1700	≥1680	≥1660	≥1650
Constant linear rate of change % 1500℃×2h	±0.1	±0.1	±0.2	±0.2
Thermal shock resistance cycle Water cooling at 1100℃	≥15	≥12	≥10	≥10

Areas of use

Corundum mullite bricks are widely used as cladding and insulation materials in high temperature kilns., heating furnaces, converters, oxidation furnaces, electric furnaces and other equipment in metallurgy, chemical industry, production of building materials, electric power industry and other industries. These are high quality fireproof materials, an important part of it.

corundum mullite brick application industries — Application areas for corundum-mullite bricks

O supplier refractory Rongsheng

Rongsheng is a professional manufacturer of fireproof materials, with rich production experience and technical strength, and can supply high quality corundum mullite bricks and other refractory bricks, shapeless refractory raw materials.
Fire brick is an important raw material for fire brick production. Currently, fire brick products, very popular, includes high alumina refractory brick, magnesia carbon bricks, magnesia-chrome bricks, fused corundum bricks, etc. d.