Ferroalloy production technology development trends: nearly twenty years Jilin iron slag agent, with the progress of development of the steel industry and the science and technology of Hubei iron slag agent, varieties of industrial production in the world ferroalloy smelting technology, technical equipment Technical aspects of energy saving, environmental protection, energy recycling and comprehensive utilization of resources have developed rapidly and breakthroughs. Ferroalloy refers to one or more metallic or non-metallic elements and alloys Jiangsu iron slag agent consisting of iron, which is mainly used as an additive steelmaking deoxidizer and alloying elements. Such as manganese and iron ferromanganese alloys, silicon and ferrosilicon iron alloy, calcium alloy is an alloy consisting of silicon and calcium. Iron and steel industry in the middle of alloy steel with customary (whether or not containing iron), are called iron alloy.