Ferroalloys. Ferroalloys occupy an important niche in the field of activity of our company. The material is packed in polypropylene bags (big-bags) according to the mass agreed in advance with the consumer.

Ferroalloys are alloys of iron with other elements (Cr, Si, Mn, Ti, etc.), used mainly for deoxidation and alloying of steel (eg, ferrochrome, ferrosilicon). Some alloys containing iron only in the form of impurities (silicocalcium, silicomanganese, etc.), and some metals and nonmetals (Mn, Cr, Si) with a minimal content of impurities are also conventionally classified as ferroalloys. Obtained from ores or concentrates in electric furnaces or smelting mines (furnaces).

The list of ferroalloys supplied by our company:

Ferrosilicon (FeSi 10, FeSi 25, FeSi 45, FeSi 65) according to GOST 1415-93 – alloys of iron with silicon. The ferrosilicon production process is based on the reduction of silica. They are used as deoxidizing and alloying additives for smelting electrical, spring, corrosion and heat-resistant steels, as well as structural and tool steels, alloying and modifying cast iron.

Ferromanganese (FeMn 78, FeMn 88, FeMn 95) according to GOST 4755-91 is an alloying alloy of iron and manganese with a minimum manganese content of 70.0% by mass and a maximum of 95.0% by mass, obtained by reduction. Depending on the carbon content, there are low-, medium-carbon and carbon varieties of ferromanganese. Ferromanganese carbon is smelted in open and closed electric furnaces using transformers up to 63 MVA and coal lining from a charge containing oxides of manganese, iron, silicon and coke. During smelting, in addition to the alloy, a manganese-rich processing slag with a low phosphorus content is obtained. It is used to obtain silicomanganese and metallic manganese.

Ferromanganese is widely used for alloying steel and its deoxidation, as well as for coating welding electrodes. The addition of manganese increases the hardness of the steel, its anti-corrosion properties and resistance to tearing.

Ferrochrome (FeСr 025, FeСr 800) according to GOST 4757-91 – an alloy of chromium with iron is used for smelting steels with special properties, obtaining stainless steel, alloying cast iron. Chromium additive increases the limits of strength and fluidity of steels. In carbon brands, it increases their hardness and wear resistance. Low-carbon steels with a Cr content of 12% or more have anti-rust properties.

Ferrosilicomanganese (FeSiMn 17) according to GOST 4756-91, the main components of which are silicon and manganese. It is smelted in ore-thermal furnaces by the carbon reduction process. Silicomanganese with silicon 10-26%, other manganese, iron and impurities are obtained from manganese ore, manganese slag and quartzite, it is used in steel smelting as a deoxidizer and alloying additive, as well as for smelting ferromanganese with a reduced carbon content by silicothermal process. An alloy with 28-30% silicon, the raw material for which is a specially obtained high-manganese, low-phosphorus slag, is used in the production of metallic manganese.

Ferrosilicomanganese is used in metallurgy as a steel deoxidizer. Gives the alloy impact resistance and brittleness when bending. It is used for the production of rail and structural steel, alloys based on aluminum, magnesium and copper are alloyed with it.

Ferromolybdenum (FeMo) according to GOST 4759-91 is obtained by the off-bake silicothermal method, using ferrosilicon and partly aluminum as a reducing agent. The alloy ensures homogeneity of the steel structure, expands the tempering and tempering temperature range, increases resistance against overheating, helps eliminate brittleness

It is used in the steelmaking and foundry industry as an alloying element to add a uniform fine crystal structure to steel; improves hardenability and hardenability of steel, increases its viscosity, eliminates tempering brittleness of chrome-nickel steel, helps preserve the properties of steel at high temperatures; addition of ferromolybdenum to cast iron increases its strength and wear resistance.

Ferrovanadium (FeV) according to GOST 27130-91 is an alloy of iron and vanadium, obtained by reducing technical vanadium pentoxide with silicon, silicon, ferrosilicon or aluminum in an electric arc furnace. The choice of ferrovanadium smelting method is determined by the content of vanadium in the alloy.

It is used to obtain fine crystal structure of steel, increase hardness, wear resistance, heat resistance.