(1) Flux method: flux method smelting ferroalloy is the use of carbon material, silicon or other metals as reducing agent, production to add slag material to adjust slag composition and properties. Such as the use of alkaline slag operation, production of high carbon ferromanganese.
(2) Flux-free method: flux-free method of ferroalloy production is generally multi-purpose carbon material as reducing agent, production without adding slag material to adjust the composition and properties of slag. If the use of manganese ore, the use of acid slag operation, the production of high carbon ferromanganese, at the same time obtain low phosphorus rich manganese slag.
(3) No slag method: no slag method smelting ferroalloy is the use of carbon reducing agent, silica or re-made alloy as raw material, continuous smelting in the reduction furnace, products such as ferrosilica, industrial silicon, silicon chromium alloy, etc.
(4) Slag method: Slag method smelting ferroalloy is to produce ferroalloy in reduction furnace or refining furnace by selecting reasonable slag type system and basicity. The ratio of slag to iron is affected by different varieties and corresponding raw material conditions and other factors, generally 0.8 ~ 1.5. Products such as high carbon ferromanganese, manganese silicon alloy, high carbon ferro-chromium and so on.
(5) Continuous smelting method: continuous smelting method, according to the drop of the surface of the furnace, uninterrupted feeding to the furnace, and the furnace pool accumulation of alloy and slag regularly discharged. With submerged arc reduction smelting, the operating power is almost balanced and stable.
