Ferroalloys Category: With the development of modern science and technology in Tianjin barium calcium silicon alloy, iron alloy varieties is growing. Single iron alloy. Only an alloy containing an alloying element is called a single alloy. Composite alloy. Multiple alloy containing two or more alloying elements. Press ferroalloy carbon content classification. Classification according to production method. Nitride products. Oxide mass. The main method of ferroalloy production: Ferroalloys production methods are many, most of ferroalloy products using pyrometallurgical production. Depending on the smelting equipment, methods of operation, and heat sources. By Device use. Use of the device can be divided into the blast furnace, electric furnace, furnace extrajudicial, converter and vacuum resistance furnace.