Ferrosilicon is an iron alloy composed of iron and silicon made from coke, steel waste and quartz (or silicon). It is widely used in the steel, foundry and ferroalloy industries as a deoxidising and alloying agent, as an inoculum and spheroidising agent, and as a reducing agent. Silicon manganese also has deoxidising and desulfurising effects. In addition, silicon manganese can effectively purify molten steel.
Ferrosilicon is mainly used in steel making and magnesium metal production. Silicomanganese is a ferroalloy with wide application and large production volume. It uses manganese ore (including manganese slag), coke and silicon as raw materials. It is mainly used in steelmaking and is used as a composite deoxidising and alloying agent. It is also used to a certain extent. It is used as a desulfurising agent.
(1) Composition of ferrosilicon
The main raw materials for the production of ferrosilicon are silica, blue coal and iron oxide scale. Among them, silica is the main source of silicon element (Si) in ferrosilicon; blue carbon is mainly used as a carbon reducing agent to reduce silicon element in silicon; iron oxide is mainly used as an iron-containing material to adjust the content of ferrosilicon, especially iron, promoting the reduction of silica in silicon.
(2) Composition of manganese silicon
The main raw materials for the production of manganese silicon alloy are manganese ore (including manganese-containing slag), coke, silica, etc. The cost of manganese ore is about 60% of the cost of manganese-silicon products.
