Ferroalloy industry has experienced three periods: the Silicon Ferroalloy ferroalloy smelting method from the scale of development and technical equipment, etc., the world ferroalloy industrial development can be divided into three development period. Blast furnace smelting period. 1860 and 1908 accounted for the blast furnace production development period of absolute advantage. Had mainly to meet the steel deoxidation and alloying of a small amount of demand, the number of small, quality is not high, the main varieties of high-carbon ferromanganese alloy, high-carbon ferrochrome and low-grade silicon alloy ferrosilicon prices, blast furnace iron alloy technology Steel has been able to meet production requirements. Ferroalloy steel industry is an important raw material and machinery essential for the foundry industry, its main purpose: First, buy silicon alloy as a deoxidizer, eliminate excess liquid steel oxygen; the second is as an alloying element additive to improve the quality of steel and performance. As China's iron and steel industry sustained and rapid development, varieties of steel, continues to expand and improve the quality of products put a higher demand ferroalloy, ferroalloy industry is increasingly becoming relevant technologies and supporting engineering steel industry.