The main method of ferroalloy production: classification by operating methods and processes. Intermittent smelting. Due to intermittent smelting process is carried out periodically quality silicon alloy, which is also called cycle smelting. Given the characteristics of the smelting operation process is different in each period, operating power is also different. Smelting, carbon ferromanganese silicon alloy prices, the low, low carbon ferrochrome and other batch type smelting. Ferroalloy industry has experienced three periods: the blast furnace and electric large-scale development period. 1908--1960 years, the blast furnace and electric furnace in the rapid development, but the development of electric faster, its production gradually catch up with production of blast furnace products. 20th century silicon alloy, with the rapid development of the world steel industry, requires not only a strong alloy oxygen capacity, and in order to carry out multi-element alloy, it should also have desulfurization, dephosphorization ability off impurities.