Electric furnaces are widely used for the smelting of non-ferrous metals [mainly used in the smelting of ferrous metal materials such as steel, alloy steel, special steel, cast iron, and the smelting of non-ferrous metal materials such as stainless steel and zinc. It can also be used for the smelting and heating of non-ferrous metals such as copper and aluminum. , heat preservation, and can operate in tandem with the blast furnace.