Secondary high alumina brickIt is an aluminum silicate refractory brick with an Al ₂ O ∝ content of not less than 65%. The production process is similar to that of clay refractory bricks. According to the different grades of bauxite clinker used, different quality requirements, and the selection of formula binders, the appropriate proportion is distributed, and it is formed by a brick press and calcined.

Secondary high alumina bricks belong to neutral refractory materials, which have good resistance to acid, alkaline slag, corrosion by molten metal, oxidation, reduction reactivity, etcHigh thermal stability and fire resistance of 1770Characteristics such as temperature above ℃ and good slag resistance.

The secondary high alumina bricks produced by our company are made of GL-70 rotary kiln raw materials that have been well calcined. The bulk density is above 3g/cm ³, the water absorption rate is less than 5%, and the sintering temperature is high, Na₂O、K₂The advantages of low O content, combined with the addition of an appropriate amount of mullite to strengthen the matrix, utilize the high-temperature volume effect of some natural minerals to achieve the characteristics of high load softening temperature, high high-temperature flexural strength, and low thermal expansion rate of the product.

High alumina bricks are widely used in blast furnaces, hot blast stoves, electric furnaces, blast furnaces, coke ovens, and other fieldsEqualizing furnaceHeating furnaceOff road refining furnaceRotary kilnAnd various industrial kiln linings, flues, smoke chambers, etc.

Customized processing of irregular high alumina bricks can be done according to the provided drawings.

Korei Refractory produces a variety of refractory products with complete specifications, and can customize and process various shaped bricks according to demand to meet the working conditions of various high-temperature kilns.

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