Chrome corundum brick is a kind of refractory products with Cr₂O₃  included. In high temperature, Cr₂O₃  and Al₂O₃  form into continuous solid, so the high temperature performance is better than the pure corundum products. The chrome corundum brick used in petrochemical industry gasification furnace should with the properties of low silica, low iron, low alkali, high purity, high density and high strength. The  widely-applied chrome corundum products, the Cr₂O₃   content is within about 9%~15%. The main mineral composition isα-Al₂O₃-Cr₂O₃  solid solution, the secondary mineral composition is a small amount of compound spinel ( or without compound spinel), and the chromium oxide content is 1%~30%. There are two kinds of chrome  corundum brick, one is fused cast chrome corundum brick, the other is sintered chrome corundum brick. Generally, chrome corundum brick is sintered chrome corundum brick.

Introduction of Chrome Corundum Brick

Chrome corundum brick is a kind of refractory products with Cr₂O₃  included. In high temperature, Cr₂O₃  and Al₂O₃  form into continuous solid, so the high temperature performance is better than the pure corundum products. The chrome corundum brick used in petrochemical industry gasification furnace should with the properties of low silica, low iron, low alkali, high purity, high density and high strength. The  widely-applied chrome corundum products, the Cr₂O₃   content is within about 9%~15%.

Mineral Composition of Chrome Corundum Brick

The main mineral composition isα-Al₂O₃-Cr₂O₃  solid solution, the secondary mineral composition is a small amount of compound spinel ( or without compound spinel), and the chromium oxide content is 1%~30%. There are two kinds of chrome  corundum brick, one is fused cast chrome corundum brick, the other is sintered chrome corundum brick. Generally, chrome corundum brick is sintered chrome corundum brick.

Made of Chrome Corundum Brick

The raw material is α-Al₂O_3,   added moderate chromium oxide powder and corundum clinker powder, after molding and burnt under high temperature. The sintered chrome corundum brick chromium oxide content is generally less than the fused cast chrome corundum brick. Also it can made of the mud casting, mix the α-Al₂O₃  and chromium oxide evenly, add dispergator and organic binding agent to make thick mud, at the same time, add some chrome corundum clinker, with the method of mud casting to make adobe brick and firing. It can used in glass kiln lining.

The Application of Chrome Corundum Brick

The chrome corundum brick is widely used in many fields, one of the chrome corundum brick mainly made of metal chromium slag, this product is widely used in zinc smelting furnace, volatilizing kiln, chrome corundum brick has the performance of excellent thermal stability and high temperature creep, at the same time, it is in accordance with the  requirement of national circular economy.

Physical and Chemical Index of Chrome Corundum Brick