The main method of ferroalloy production: classification by operating methods and processes. Intermittent smelting. Intermittent concentrate smelting charge is added to the smelting process or batch furnace. Generally divided into two periods of melting and refining, in the melting of the electrode is buried in the charge; and refining of Arc is exposed, and the refining of the EAF is exposed, refined finished Si-Ba-Ca alloy prices, alloys and discharge slag, and then proceed to the next load of new material melting furnace. Ferroalloy industry has experienced three stages: the study of Si-Ba-Ca alloy plant from ferroalloy smelting methods, 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 a small amount of alloying Si-Ba-Ca alloy demand, the number of small, quality is not high, the main varieties of high-carbon ferromanganese alloy, high-carbon ferrochrome and low-grade ferrosilicon, blast furnace ferroalloy steel production technology has been able to meet the requirements.