The production methods of high carbon ferromanganese include blast furnace method and electric furnace production. High carbon ferromanganese was first produced by blast furnace. It has high output and low cost. It is still widely used at home and abroad.
The principle of smelting high carbon ferromanganese in the two furnaces is the same. The blast furnace method is to add manganese ore, coke, lime and other materials into the blast furnace for smelting to obtain blast furnace ferromanganese containing 52%~76% manganese/0.4%~0.6 phosphorus.
Since the difference between blast furnace and electric furnace smelting high carbon ferromanganese is the different heat sources, the furnace structure, geometry and operating methods of the two furnaces are different. The two furnaces use the same manganese ore to smelt, so the phosphorus content of the products obtained is different. The phosphorus content is slightly higher than that of electric furnace products, 0.07%~0.11%. This is because the amount of coke in the charge composition of blast furnace smelting is 5 to 6 times that of electric furnace smelting, so more phosphorus in the coke is transferred into the alloy, and the furnace temperature during blast furnace smelting is lower, so during the smelting process The volatilization of phosphorus is about 10% lower than that of electric furnaces.
