The popular zirconia brick application in the field of zirconium-containing refractories

Zirconia brick products are popular in the field of zirconium-containing refractories

    In recent years, as an emerging material, zirconium-containing materials have been rapidly developed. In the field of refractory materials, natural zirconium-containing mineral raw materials and artificially extracted or synthesized zirconium oxide and composite oxide raw materials have also been widely used. Produce a variety of high-performance zirconium-containing refractories.

The application of zirconium-containing raw materials to make refractory materials is widely used in the metallurgical industry. According to the material, it can be divided into: zircon products, zirconia products, aluminum zirconium carbon products, zirconium carbon products, calcium zirconate products, zirconium boride products, oxide Zirconium modified refractory materials, etc.

    Zirconium-containing raw materials are widely used in the refractory industry. This is mainly because zirconium-containing refractories usually have a higher melting temperature, strong chemical stability, and have good corrosion resistance to molten metal, slag, or molten glass. Good thermal shock resistance, so it can be well used as refractories for glass kilns, refractories for metallurgical industry, refractories for cement kilns, ceramics and refractories, refractories for kilns and refractories for other industrial kilns, etc. . Zirconium-containing refractories are mainly used in the melting part of the glass melting furnace, the upper structure, the side wall, and the liquid hole. The main varieties are: dense zircon bricks, fused cast zirconium corundum bricks, zirconium mullite fused cast bricks, and recombined AZS bricks. Among them, zirconia products are widely used in refractory materials and are also very important.

    Among them, zirconia products are highly favored by various manufacturers. In the oxide product system, ZrO2 has many excellent characteristics, such as high melting point (2700℃), high structural strength at high temperature, and good chemical stability. Glass melt has high chemical inertness, is not easy to be wetted by liquid metal, high temperature vapor pressure and decomposition pressure are low, and has lower volatility than Al2O3 and MgO.

    There are many varieties of zirconia brick products, and there are also many molding methods, such as: mud pouring, hot pressure injection, mechanical pressing, isostatic pressing, etc. The raw materials used are zircon of various particle sizes and various zirconia raw materials (molding method Different, have different requirements on the particle size of the raw materials), including zirconia and various purity stable, semi-stable or monoclinic zirconia. Due to different uses, the performance indicators of various products are also quite different, but the unique high temperature resistance, erosion resistance and erosion resistance of zirconia products are mainly used. Adding a certain amount of zirconia to refractory materials commonly used in the metallurgical industry such as corundum, high aluminum, magnesia-calcium, aluminum-magnesium, magnesia-chromium, and magnesia-carbon can improve the chemical stability, thermal shock and stability of these materials. Intensity and other indicators.

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