Calcium carbide or Carbide is a chemical compound (with CaC2 chemical formula) in the form of crystals solid colored gray is used for the manufacture of acetylene gas (C2H2), ie the material to cut and weld iron and steel in shipping, mining, and car body industries (automotive) and small industries.
In the iron-steel smelting industry and in the mining industry (gold, nickel, copper, etc.), carbide is used as a "desulphurising medium" that is the material for separating impurities from the metals. Carbide is also used in welding by welders. In addition, carbide can also be used in the fruit ripening process.
The main raw materials of calcium carbide are limestone and metallurgical coke.