In June.2022, HOT SALES,138 tons Fire clay bricks are packed for delivering to customer in Philippines. Mainly used for building smelting furnaces, it can withstand high temperature of 1,580℃-1,770℃. Also called fire bricks. A refractory material of a certain shape and size.Wear resistance is an important factor in the erosion wear of refractory bricks for furnace linings. But which kind of refractory fire clay brick is the most wear-resistant? Bricks with good wear resistance are not the higher the strength, the more wear-resistant, but the wear-resistant rate of the inherent quality of the refractory bricks. Silicon carbide refractory bricks have the strongest wear resistance, high alumina refractory bricks and corundum refractory bricks have medium wear resistance, and alkaline, siliceous and clay bricks have poor wear resistance. Due to the large difference in alumina content, high alumina bricks have different wear rates. According to the usage, the aluminum-silicon-carbide-carbon bricks containing graphite wear more, and the aluminum-carbon bricks with low graphite content or no graphite have less wear. Silicon carbide and corundum have high mineral hardness. In principle, the higher the hardness, the stronger the wear resistance. The lower the Mohs strength, the lower the abrasion resistance. The layered Mohs hardness of graphite is low due to intermolecular force, so the wear resistance is not good. For example, magnesia bricks, magnesia spinel bricks, magnesia chrome bricks, clay bricks, and silica bricks have relatively low Mohs degrees and lower wear resistance. There are also some composite bricks, clay bonded silicon carbide bricks, silicon nitride bonded silicon carbide bricks, corundum silicon carbide bricks, in contrast, silicon nitride bonded silicon carbide bricks are more wear-resistant than corundum silicon carbide bricks, and corundum silicon carbide bricks Wear-resistant than clay-bonded silicon carbide bricks. The crystal structure type and lattice energy of different mineral phases lead to different hardness of their minerals. The Mohs hardness of diamond, silicon carbide, and corundum of atomic crystal is very high, and spinel, mullite, and periclase of ionic crystal. The hardness of the stone decreases in turn, and the higher the hardness of the mineral, the stronger the wear resistance.
