LRON Silicon Manganese

Electric furnace smelting
There are two methods for reducing and smelting ferromanganese: flux method (also known as low manganese slag method) and flux free method (high manganese slag method)
In steelmaking, it is the most commonly used ferroalloy as a deoxidizer and alloy additive. Manganese ore used for smelting ferromanganese generally requires a manganese content of 30-40%, a manganese iron ratio greater than 7, and a phosphorus manganese ratio less than 0.003. Before smelting, manganese carbonate ore needs to be roasted first, and powdered ore needs to be sintered into blocks. Ores with high iron and phosphorus content can generally only be used in combination, or manganese rich slag with low iron and low phosphorus can be obtained through selective reduction. During smelting, coke is used as a reducing agent, and some factories also use lean coal or anthracite. The main auxiliary raw material is lime, and silica is usually added when smelting manganese silicon alloy.
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