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Firebricks, also known as firebricks, are refractory materials made from refractory clay or other refractory materials. Light yellow or brown, mainly used in smelting furnaces, resistant to high temperatures ranging from 1580 ℃ to 1770 ℃. Refractory bricks are generally divided into two types, namely unshaped refractory materials and shaped refractory materials. Unshaped refractory material: also known as castable, is a mixed powder particle material composed of various aggregates or aggregates and one or more adhesives. When used, it must be mixed with one or more liquids with strong fluidity. Shaped refractory materials: General refractory bricks have standard shapes and can also be temporarily processed as needed. From the perspective of refractory brick materials, common types of refractory bricks include clay bricks, high alumina bricks, mullite bricks, corundum bricks, magnesium bricks, magnesia carbon bricks, carbon refractory bricks, etc