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HC7 FeMn
HC7 FeMnHC7 FeMn In steelmaking, the ferromanganese used as deoxidizer and alloy additive, is the most used ferroalloy.Manganese ore for smelting ferromanganese is generally required to contain 30%-40% manganese, the ratio of ferromanganese is greater than 7, and the ratio of phosphorus to manganese is...

HC7 FeMn

In steelmaking, the ferromanganese used as deoxidizer and alloy additive, is the most used ferroalloy.Manganese ore for smelting ferromanganese is generally required to contain 30%-40% manganese, the ratio of ferromanganese is greater than 7, and the ratio of phosphorus to manganese is less than 0.003.Before smelting, manganese carbonate should be roasted first, and the powder should be made by sintering.Ores with high iron and phosphorus content can only be used in combination or through selective reduction to produce manganese rich slag with low iron and phosphorus content.Coke is used as a reducing agent in smelting, and some plants also use lean or anthracite.The auxiliary raw materials are mainly lime, and silica is usually added when smelting manganese silicon alloy.

The general standard of carbon ferromanganese is 75~80%, the raw material condition of low grade of manganese for adapting to the low grade of manganese in China has stipulated the brand with lower content of manganese (the manganese of electric furnace contains more than 65%, the manganese of blast furnace contains more than 50%).Smelting carbon ferromanganese was mainly used in blast furnaces in the past. With the development of power industry, electric furnaces gradually increased.Western Europe and China mainly used blast furnaces, Norway, Japan are used electric furnaces, the Soviet union, Australia, Brazil and other countries to build new ferromanganese plants also use electric furnaces.


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