Induction Furnace Refractory Material Induction furnace steelmaking methods are divided into acid smelting and alkaline smelting methods according to the properties of refractory materials. Acid slag is produced during smelting by the acid smelting method. Therefore, refractory materials are mainly quartz sand and zircon, and their knotting, baking, and sintering processes are similar to those of smelting cast iron. Quartz sand or zircon sand furnace lining is generally used for the smelting of low-carbon steel or low-alloy steel. Alkaline smelting produces alkaline slag during smelting, so the refractory materials are neutral, alkaline refractory materials or graphite crucibles, which are suitable for smelting high-alloy steel, special steel, precision alloy steel, and other steel types. Historically, there are Multiple series of refractory materials are used in the lining of induction furnaces, among which SiO2 and zircon have been used occasionally due to acidity, and have continued...