What are the Uses of Zirconium-containing Materials in Refractories?



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As a new material, zirconium-containing materials have been rapidly developed in the last decade or so. In the field of refractory materials, natural zirconium-containing mineral materials and artificial zirconium oxide and composite oxide raw materials have also been widely used, which are used to make various kinds of zirconium refractory with good performance.

zirconium-containing material

Zirconium-containing raw materials have been widely used in the refractory industry, which is mainly because zirconium-containing refractories usually have high melting temperature and strong chemical stability. They have good corrosion resistance to metal melt, slag, or glass fluid and good thermal shock resistance; therefore, they can be well used as refractories for glass kilns, refractories for metallurgical industry, refractories for cement kilns, ceramics, etc.

Zirconium-containing refractory is mainly used in melting part, upper structure, side wall and the fluid hole of glass melting furnace. The refractory made from zirconium is widely used in metallurgical industry, which can be divided into zirconite products, zirconium oxide products, calcium zirconate products, zirconium boride products, zirconium oxide modified refractory, etc. according to the material. Zirconium quartzite products have the characteristics of high temperature resistance, good anti-acid slag, little erosion, slight slag adhesion, small thermal expansion coefficient and good thermal shock stability, which can be used as inner liner of shear steel barrel, and can be masonry in key parts such as direct impact of steel water, slag line and around water outlet.

Due to different uses, the performance indexes of various products are quite different, but the special properties of high temperature, corrosion and erosion resistance of zirconia products are mainly used. The chemical stability, thermal shock stability and strength of the materials can be improved by adding a certain amount of zirconium oxide to the refractory commonly used in the metallurgical industry such as high-alumina refractory, magnesia chromite refractory magnesia carbon refractory, etc. In these materials, zirconia is usually introduced by zircon sand and zirconia.

The specific production process is usually the same or slightly different from that before modification. In general, zirconium-containing raw materials have been widely used in the field of refractories due to their excellent properties, and the applications of which will be more and more extensive.

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