Zircon brick is suitable for working under pressure with its good thermal shock resistance. In metallurgical industry, zircon brick is widely used in ladle lining, casting export, high temperature induction furnace lining and so on. With the strong resistance to acid slag and glass liquid, in glass industry, zircon brick is applied to severely damaged parts of glass furnace. In addition, crucible, pipe, boat, dish and test container made by zircon brick are widely used in place related to high temperature. Zircon brick with high density and low porosity is suitable to the liner of glass furnace of glass fiber.