The main method of ferroalloy production: classification by operating methods and processes. Intermittent smelting. Due to intermittent smelting process is carried out periodically, and thus also known cycle smelting. Given the different characteristics of the operation process Si-Ba-Ca alloy smelting each period, operating power is also different. Smelting, carbon ferromanganese Si-Ba-Ca alloy suppliers, medium, low, low carbon ferrochrome and other batch type smelting. Ferroalloy is comprised of one or more kinds of metal or metalloid elements consisting of iron and alloy steel and as a deoxidizer, desulfurizer and alloy additives such as foundry industry. For example Ferrosilicon is an alloy of silicon and iron; ferromanganese alloy of manganese and iron; calcium alloy is an alloy consisting of silicon and calcium. On production methods and purposes, ferroalloy also include low iron alloy metal manganese, chromium, vanadium and industrial silicon.