DUSICHIN DUS-910 High Purity Graphite Crucible Casting Melting Gold Silver Scrap Casting Mould (lbs) Material:High purity fine particle graphite Less than 300pp ash, to ensure precious metals smelting is not contaminated good thermal stability;good resistance to acids, alkalis;good corrosion resistance;good heat conduction properties Long service life, able to withstand more than 2000  high temperature This crucible only can be burned in electric furnace, can't be burned in coke furnace.