The wear resistance of zirconia ultra-high wear-resistant lining bricks produced by our company is 15 times that of alumina ceramics, and its friction coefficient is only 1/2 of that of alumina ceramics, while the friction system of alumina ceramics itself is low. The density of zirconia ceramics is higher than that of alumina ceramics, the density of alumina ceramics is 3.6, the density of zirconia ceramics is ≥6, and the texture is more delicate. After grinding, the surface finish is higher, mirror-like, very smooth, and has a smaller coefficient of friction. In addition, zirconia ceramics have excellent toughness, overcome the inherent brittleness of ceramics, have higher wear resistance, and greatly extend the service life of the product.