RS Corundum Mullite Bricks

Corundum Mullite Bricks

Good high-temperature strength.
High-temperature creep resistance.
Thermal shock resistance and erosion resistance.

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Corundum-mullite bricks refer to high-alumina refractory products composed of corundum and mullite main crystal phases. Rongsheng corundum mullite bricks for Sale are refractory brick products made of high-purity or relatively pure raw materials.

Production Process of Corundum Mullite Bricks

Rongsheng Manufacturer usually uses synthetic mullite to make corundum mullite bricks. Mullite granules are used as aggregates and α-Al2O3 powder is used as powder. Electrofused or sintered corundum granules are also used as aggregates and synthetic mullite powder is used as powder. Aggregates and powders are mixed in a certain proportion and particle size distribution, and sulfite pulp waste liquid is used as a binder. Add materials in a certain order, mix them evenly, and form them with a friction brick press or a hydraulic brick press. After the bricks are dried, they are fired at 1650-1750℃.

Pure mullite raw materials synthesized from industrial alumina powder and pure clay, bauxite, or silica are used, especially the content of alkali metal oxides should be as low as possible. Products made with mullite granules as aggregates have good thermal shock resistance, but slightly poor erosion resistance. Products with corundum sand as aggregate have good corrosion resistance, but slightly poor thermal shock resistance.

Rongsheng Corundum Mullite Bricks Performance Advantages

Rongsheng corundum mullite bricks have good high-temperature strength, high-temperature creep resistance, thermal shock resistance, and erosion resistance. The physical and chemical properties of a typical corundum mullite brick are Al2O3>85%, Fe2O3 0.45%, and apparent porosity 19%. The room temperature compressive strength is greater than 55MPa. The load softening temperature is greater than 1700℃. Heating line change (1600℃, 3h) -0.1%. Thermal shock resistance (1100℃ water cooling) is greater than 30 times.

Physical and Chemical Indicators of Corundum Mullite Bricks

Physical and Chemical Indicators of Corundum Mullite Bricks in Rongsheng
Items	GMZ-90	GMZ-85	GMZ-80	GMZ-75
Al₂O₃ %	≥90	≥85	≥80	≥75
Fe₂O₃ %	≤0.8	≤1.0	≤1.0	≤1.2
Apparent Porosity, %	≤16	≤17	≤18	≤18
Bulk Density, g/cm³	≥3.10	≥2.85	≥2.75	≥2.6
CCS, MPa	≥120	≥100	≥100	≥80
0.2MPa RUL℃	≥1700	≥1680	≥1650
PLC, % 1500℃×2h	±0.1		±0.2
TSR, Cycle 1100℃ Water	≥30	≥30	≥30

Application of Corundum Mullite Bricks

Rongsheng corundum mullite bricks are mainly used in high-temperature hot air furnaces, as well as in glass melting furnaces and as ceramic firing kiln tools.

Rongsheng Corundum Mullite Bricks Manufacturer

Rongsheng is a powerful manufacturer of refractory bricks. Rongsheng can provide design, supply, and construction of lining materials for high-temperature industrial furnaces. Rongsheng’s corundum mullite bricks are of high quality and have a long service life. Rongsheng’s products have been sold to more than 120 countries around the world, such as South Africa, Chile, Egypt, Colombia, Uzbekistan, Italy, Indonesia, Ukraine, Hungary, Spain, Kenya, Syria, Zambia, Oman, Venezuela, India, Peru, the United States, Ethiopia, etc. If you need to buy corundum mullite bricks for high-temperature hot air furnaces, glass-melting furnaces, and ceramic firing kilns, please contact Rongsheng. The shape and size of refractory bricks can be customized. In addition, there are free quotes and samples!