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Matters needing attention in the use of fused zirconium corundum brick

Matters needing attention in the use of fused zirconium corundum brick

Electric fused zirconium corundum brick is a kind of zirconium corundum brick, mainly used in glass melting furnace, electric fused zirconium corundum brick commonly known as white iron brick, also known as corundum-oblique zircon brick. The main chemical composition is AI203 50%-70%,ZrO2 20%-40%, and the rest is SiO2. The main mineral composition is oblique zircon (ZrO2), corundum (a-AI2O3) and glass phase. The crystallization of oblique zircon forms the backbone of the brick body, ZrO2 has a high melting point (2715 ℃) and good chemical stability, and has a strong resistance to acid medium, especially glass liquid.

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What is the particularity of the forming method of zirconium corundum brick

What is the particularity of the forming method of zirconium corundum brick

The molding method in which the material is directly cast into products after melting at high temperature is called melt-casting molding method. Because of the common use of electric arc furnace melting materials, so the casting molding products are also known as electric melting products. Common electrofusion products are fused mullite brick, fused zirconium corundum brick, fused corundum brick and so on.

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What are the unique product characteristics of zirconium corundum brick

What are the unique product characteristics of zirconium corundum brick

There are five kinds of raw materials for zirconium corundum refractory bricks: alumina, zircon sand, zirconium-rich sand, soda ash and foundry sand.

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2021

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Three Basic Properties of Electrofused Zirconium Corundum

Three Basic Properties of Electrofused Zirconium Corundum

Electrically fused zirconium corundum refractories are refractory products made of materials melted into liquid in an electric arc furnace, then cast and molded in a sand mold, and machined by cutting and grinding after heat treatment. In general, pre-assembly shall be completed before leaving the factory according to the drawings. Compared with ordinary sintered refractory materials: electrofusion products have fully developed crystal form and compact structure, low porosity, high volume density, and have better resistance to physical and chemical erosion in glass furnaces. At the same time, it is less prone to foaming and calculus in contact with high temperature glass liquid, resulting in fewer glass defects and longer service life.

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