Silicon carbide crucible has a volume density, high temperature resistant, fast heat, acid and alkali resistant, high temperature strength, unpolluted antioxidant properties higher characteristic. Service life is ordinary graphite crucibles of 3, 5 times. This product is widely used in all kinds of non-ferrous metal smelting and casting, stable quality, long service life, reduced the fuel consumption and reduce the labor intensity, improve work efficiency, and create a better economic benefits.