Brief introduction of high carbon ferromanganese: High […]
Brief introduction of high carbon ferromanganese: High carbon ferromanganese is an alloy composed of manganese and iron. The carbon content of high-carbon ferromanganese is generally 2.0% to 8.0%.
High carbon ferromanganese use: High carbon ferromanganese can be divided into electric furnace high carbon ferromanganese and blast furnace high carbon ferromanganese according to different processing techniques. Among them, the electric furnace high carbon ferromanganese is mainly used as a deoxidizing agent, a desulfurizing agent and an alloy additive in the steelmaking process. In addition, with the progress of low and medium carbon ferromanganese production process, high carbon ferromanganese can also be used to produce low and medium carbon ferromanganese. In addition, blast furnace high carbon ferromanganese can be used in steelmaking as a deoxidizer or alloy element additive.
High carbon ferromanganese production process:
Blast furnace method
High-carbon ferromanganese was first produced in a blast furnace, with high output and low cost. It is still widely used at home and abroad.
The blast furnace method is to add manganese ore, coke and lime to the blast furnace for smelting to obtain blast furnace ferromanganese containing 52% ~ 76% manganese / 0.4% ~ 0.6 containing phosphorus. Because the only difference between high-carbon ferromanganese smelting in blast furnace and electric furnace is different heat source, the furnace structure, geometry and operation method of the two are different, but the principle of smelting high-carbon ferromanganese in both furnaces is the same.
However, the same manganese smelting is used in two furnaces to make the phosphorus content of the products different, and the higher the blast furnace product is 0.07% ~ 0.11%. This is because the amount of coke in the charge composition of the blast furnace smelting is 5 to 6 times during the electric furnace smelting, so more phosphorus in the coke is transferred into the alloy, and the furnace temperature during the blast furnace smelting is lower. The volatile amount of phosphorus is about 10% lower than that of the electric furnace.