Ferro Manganese

Ferromanganese (FeMn) is an iron alloy composed of manganese and iron. In steelmaking, it is used as deoxidiser and alloy additive and is the most used ferroalloy. Ferromanganese alloy can improve the quality of steel and reduce the cost, widely used in structural steel, tool steel, stainless steel, heat-resistant steel and other alloy steel.

LC Ferromanganese lumps

MC Ferro manganese lumps

HC Ferromanganese lumps

Ferromanganese can be classified according to the amount of carbon content:
Low Carbon Ferromanganese (C: 1% max): with lower carbon content, it is mainly used in steelmaking to enhance the hardness and toughness of steel and effectively deoxidise. The production method usually adopts the blast furnace method, similar to the production process of foundry pig iron.
Medium Carbon Ferromanganese (C: 1.0-2.0%): with lower carbon content, it is used in the production of special steel, stainless steel and other special steel. With special treatment, the carbon element of medium carbon ferromanganese can be reduced to about 0.2% or so.
High Carbon Ferromanganese (C: 6-8%): with higher carbon content, it is usually used in casting as deoxidising agent, desulphurising agent and alloy additive.

Ferromanganese has a wide range of applications in the fields of metallurgy, materials and energy.
1. Steelmaking: Ferromanganese is used as a deoxidiser and alloying additive to improve the quality of steel, castability and strength. It also helps to remove oxides, reduce inclusions and make steel purer.
2. Casting: Ferromanganese is used as a deoxidising and desulphurising agent to improve the quality of castings and reduce inclusions.
3. Stainless steel manufacturing: Ferromanganese is an important alloying element in stainless steel, helping to improve corrosion resistance and strength.
4. Speciality steels: Ferromanganese is used in the production of speciality steels such as high speed steels, tool steels and heat resistant steels.
5. Battery Manufacturing: Ferromanganese plays an important role in battery cathode materials, such as lithium manganate batteries.
6. Mineral processing industry: Ferromanganese powder can be used as a suspension phase to help separate useful minerals from ores.
7. Welding rod manufacturing industry: Ferro manganese powder is used as a coating for welding rods to help with fusion and strength during the welding process.
8. Electrical industry: High manganese ferromanganese is used to prepare pure manganese for semiconductors, which are used in electronic components and equipment.
9. Chemical industry: Ferromanganese is used in the manufacture of organic compounds such as manganese ketones

Steel Manufacturing

Foundry Industry

Non-ferrous Metallurgical

Battery Banufacturing

Mineral Processing Industry

Welding Rod Manufacturing

The main ferromanganese production processes are the blast furnace method and the electro silicon thermal method, the oxygen blowing method and the shaking ladle method.
1. Blast Furnace Method: This is a traditional smelting method usually used to produce HC FEMN. In the blast furnace, the manganese ore is put into the blast furnace with a reducing agent (e.g. coke) to produce FEMN alloy through high temperature reduction reaction.
2. Electrosilicon thermal method: The Electrosilicon thermal method is to add manganese ore, manganese-silicon alloy and white ash into an electric furnace, relying on electric heat to melt the furnace charge and produce MC FEMN and LC FEMN by reducing manganese oxides in manganese ore through silicon.
3. Oxygen blowing method: Oxygen blowing method is to pour liquid ferromanganese carbon or manganese-silicon alloy into the oxygen blowing converter for oxygen blowing to remove the carbon and silicon and get the MC FEMN and LC FEMN.
4. Shaking ladle method: The shaking ladle method is to add the preheated manganese ore, white ash and liquid manganese-silicon alloy into the shaking ladle, and then shaking, using the sensible and latent heat of the charge to make the charge melt and carry out the refining reaction, to get the MC FEMN and LC FEMN.
At present, China is widely used in the production of low carbon FEMN and medium carbon FEMN by electro silicon thermal method.

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