Blast Furnace High Carbon Ferromanganese:Blast furnace method is one of the earliest methods used by high carbon ferromanganese manufacturers to produce high carbon ferromanganese. This method uses coke as the reducing agent and heat source, dolomite or lime as the flux, and uses the blast furnace to produce high carbon ferromanganese. The main raw materials for smelting ferromanganese in blast furnace are manganese ore, coke and flux.
The blast furnace method is to add manganese ore, coke and lime into the blast furnace for smelting, and get the blast furnace ferromanganese with manganese content of 52%~76%/phosphorus content of 0.4%~0.6. As the only difference between blast furnace and electric furnace ferromanganese with high carbon is the heat source is different, so the structure, geometry and operation method of the two furnaces are different, but the principle of smelting ferromanganese with high carbon in the two furnaces is the same.
However, the two furnaces use the same kind of manganese ore smelting to make the obtained product phosphorus content is not the same, the higher the blast furnace product than the electric furnace product 0.07%~0.11. This is due to the coke in the composition of the blast furnace smelting charge ration for the electric furnace smelting of the 5~6 with, so there are more phosphorus in the coke to transfer to the alloy, and the furnace smelting of the blast furnace furnace furnace temperature is low, so that the volatilisation of phosphorus in the process of smelting is lower than that in the electric furnace by about 10 per cent.
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