The main method that ferroalloy produces reachs raw material

By production equipment is classified

The law outside be blast furnace law, electric stove law, furnace according to producing equipment to be able to be divided, converter law reachs way of vacuum resistor furnace.

(1) electric stove law. Electric stove law is the main method that produces ferroalloy, 80% what its crop holds all ferroalloy output about.

(2) blast furnace law. The main body device that place of blast furnace law uses is blast furnace. Blast furnace law is the ferroalloy production methods that uses the earliest. Blast furnace law produces ferroalloy, have labor productivity tall, cost is low advantage. But the limitation in view of temperature of blast furnace crucible, and the metal below condition of blast furnace smelt by carbon sufficient saturation, because law of this blast furnace is used at producing ferroalloy of easy reductive element and low grade ferroalloy only commonly.

(3) the law outside furnace (the metal heats up a law) . The law outside furnace is to use silicon, aluminium or aluminum-magnesium alloy to make reducer, the chemical heat that relies on reductive reaction generation undertakes smelt, uses main body device is barrel type forge. Use raw material has concentrate, reducer, flux, exothermic mixture and steel bits, iron ore to wait.

(4) aerobic converter law. The main body device that aerobic converter law uses is converter, offer oxygen way by its, have side-blown and top, bottom, top background compound blowing law. Use raw material is ferroalloy of liquid state tall carbon, pure oxygen, refrigerant and slagging material, ferroalloy of liquid state tall carbon add enters converter, gun of oxygen of high-pressured oxygen classics connects the blowing inside furnace, rely on the decarbonization of quantity of heat that oxidation reaction gives off, production undertakes by fits.

(5) law of vacuum resistor furnace. Method of vacuum resistor furnace is used when production contains carbon to measure extremely low small carbon ferrochrome, nitrogen to change ferrochrome, nitrogen to turn the product such as ferromanganese, equipment of its main body is vacuum resistor furnace.

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