ZhenAn Ferromanganese Manufacturers Environment
Introduction To Ferromanganese
Ferromanganese: An iron alloy composed of manganese and iron. Main categories: high carbon ferromanganese (containing 7% carbon), medium carbon ferromanganese (containing 1.0~1.5% carbon), low carbon ferromanganese (containing 0.5% carbon), metallic manganese, mirror iron, silicon-manganese alloy.
In steelmaking, it is used as a deoxidizer and alloy additive. It is a ferrous alloy that is used in large quantities. Manganese ore used for smelting FerroMn generally requires a manganese content of 40 to 50%, a manganese-iron ratio greater than 7, and a phosphorus-manganese ratio less than 0.003.
Before smelting, manganese carbonate ore must be roasted and the powdered ore must be sintered and agglomerated.
Ores containing high iron and phosphorus can generally only be used together, or manganese-rich slag with low iron and low phosphorus can be produced through selective reduction.
Coke is used as a reducing agent during smelting, and some factories also use lean coal or anthracite. The auxiliary raw material is mainly lime, and silica is generally added when smelting manganese-silicon alloy.