Knowledge related to blast furnace smelting of high carbon ferromanganese

Blast furnace high carbon ferromanganese: The blast furnace method is one of the earliest methods used by high carbon ferromanganese manufacturers to produce high carbon ferromanganese. The method uses coke as reducing agent and heat source, dolomite or lime as flux, and uses blast furnace to produce high-carbon ferromanganese. The raw materials for blast furnace ferromanganese smelting mainly include manganese ore, coke and flux.

The blast furnace method is to add manganese ore, coke and lime and other materials into the blast furnace respectively for smelting to obtain blast furnace ferromanganese containing 52%~76% manganese/0.4%~0.6 phosphorus. Because the difference between high carbon ferromanganese blast furnace and electric furnace high carbon ferromanganese is the difference in heat source, the structure, geometry and operation method of the two furnaces are different, but the principle of smelting high carbon ferromanganese in the two furnaces is the same.

However, the two furnaces use the same manganese ore for smelting, so that the phosphorus content of the products is different. The blast furnace products are higher than the electric furnace products by 0.07%~0.11. This is because the proportion of coke in the charge composition of blast furnace smelting is 5~6 accompaniments in electric furnace smelting, so more phosphorus is transferred into the alloy in the coke, and the furnace temperature during blast furnace smelting is low, so during the smelting process The volatilization of phosphorus is about 10% lower than that of electric furnaces.

High-carbon ferromanganese was first produced by blast furnace, which has high output and low cost, and is still widely used at home and abroad.