The main components of graphite crucible are natural flake graphite and binder, which have good thermal conductivity and high temperature resistance.  During high temperature use, its thermal expansion coefficient is small, and it has certain strain resistance to rapid heating and rapid cooling.  It has the advantages of strong acid and alkaline solution corrosion resistance, good chemical stability, and no reaction with melt, and is a non-ferrous metal melting and casting device.  Due to its excellent performance, graphite crucibles are widely used in the smelting of alloy steel, non-ferrous metals and their alloys in metallurgy, casting, machinery, chemical industry and other industries.  Good technical and economic effects have been achieved.