company news about What Is High Carbon Ferromanganese?

High carbon ferromanganese is an alloy composed of manganese and iron. Ferromanganese is divided into three categories according to its carbon content: low carbon category: carbon is no more than 0.7%; medium carbon category: carbon is no more than 0.7% to 2.0%; high carbon category: carbon is no more than 2.0% to 8.0%.

High carbon ferromanganese product production process:

The production methods of high carbon ferromanganese include blast furnace method and electric furnace production. The characteristics of these two methods are introduced below:

Blast furnace method: 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 only difference between the blast furnace and the electric furnace for smelting high-carbon ferromanganese is the different heat sources, the furnace structure, geometry and operation methods of the two furnaces are different, but the principles of smelting high-carbon ferromanganese in the two furnaces are the same.

However, the two furnaces use the same manganese ore for smelting, so the phosphorus content of the products obtained is different. The blast furnace product is 0.07%~0.11% higher than the electric furnace product. 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.

There are three methods for smelting high carbon ferromanganese by electric furnace method, namely solvent-free method, solvent method and less solvent method. The following is an introduction to the commonly used method for smelting high carbon ferromanganese: the solvent method.

solvent method. The solvent method is a commonly used method for smelting high carbon ferromanganese. In addition to manganese ore and coke, the charge composition also includes lime and high alkalinity slag during smelting. The alkalinity is B=1.3~1.4. Sufficient reducing agent is used to reduce the manganese content in the waste slag as much as possible and improve the recovery rate of manganese.