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Ferroalloy Ferroalloy refers to various alloys of iron with a high proportion of one or more other elements such as manganese, aluminum, or silicon. They are used in the production of steels and alloys. The alloy impart distinctive qualities to steel and cast iron or serve important functions during production and are, therefore, closely associated with the iron and steel industry, the leading consumer of ferroalloys. The leading ferroalloy-producing countries are China, Ukraine, South Africa and Russia, which accounted for 77% of the world production. The main ferroalloys are: FeAl – ferroaluminum FeB – ferroboron – 12–20% of boron FeCe – ferrocerium FeCr – ferrochromium FeMg – ferromagnesium FeMn – ferromanganese FeMo – ferromolybdenum – min. 60% Mo FeNb – ferroniobium, also called ferrocolumbium FeNi – ferronickel FeP – ferrophosphorus FeSi – ferrosilicon – 15–90% Si FeSiMg – ferrosilicon magnesium (with Mg 4 to 25%), also called nodulizer FeTi – ferrotitanium FeU – ferrouranium FeV – ferrovanadium FeW – ferrotungsten SiMn - Silicomanganese Ferroalloys are produced generally by two methods. More commonly, ferroalloys are produced by carbothermic reactions, involving reduction of oxides with carbon (as coke) in the presence of iron. Some ferroalloys are produced by the addition of elements into molten iron.
