What is the difference and connection between ferrosilicon and manganese silicon?

Both ferrosilicon and manganese silicon are added raw materials in steelmaking. They are mainly used to remove oxygen in steel and increase the toughness and strength of steel. They are indispensable substances in steelmaking. So what is the difference and connection between ferrosilicon and manganese silicon?

The difference and connection between ferrosilicon and manganese silicon

Ferrosilicon is a ferroalloy composed of iron and silicon, which is made by smelting in an electric furnace with coke, steel shavings, quartz (or silica) as raw materials. It is widely used in steelmaking industry, foundry industry and ferroalloy industry. It is used as deoxidizer and alloying agent in steelmaking, as inoculant and nodulizer in cast iron, and as reducing agent in ferroalloy production. At present, domestic ferrosilicon is mainly used for steelmaking and magnesium metal production.


Manganese-silicon is a ferroalloy with wide application and large output. It uses manganese ore (including manganese-rich slag), coke, silica, etc. as raw materials. The main application is steelmaking. It is mainly used as a composite deoxidizer and alloy In addition, it is also used as a desulfurization agent to a certain extent.

Ferro-silicon and manganese-silicon are the most widely used ferroalloys in the steelmaking process. The biggest difference between them is that the raw materials for production are different. Second, the usage is different. Ferrosilicon is only used as a deoxidizer, while silicomanganese has the effect of deoxidation and desulfurization at the same time. In addition, silicomanganese can also effectively purify molten steel. Third, the distribution of production areas is different. Ferrosilicon production areas are mainly distributed in the northwest region, and the flow direction is mainly from northwest to southeast. Hebei, Liaoning, Jiangsu and other major steel-producing provinces; manganese and silicon production areas are distributed at both ends of the north and south, showing a north-south direction. The pattern of intermediate transfers.

Cost components of ferrosilicon and manganese silicon

(1) Cost composition of ferrosilicon
The main raw materials for producing ferrosilicon are silica, semi-coke and iron oxide scale. Among them, silica is the main source of silicon (Si) in ferrosilicon; semi-coke is mainly used as a carbonaceous reducing agent to reduce silicon in silica; iron oxide scale is mainly used as iron-containing material to adjust the composition of ferrosilicon, especially iron In addition, it also has the effect of promoting the reduction of silica in silica. Production of 1 ton of ferrosilicon = [1.8 tons of silica + 8000 kilowatt-hours of electricity + 1 ton of semi-coke + 0.2 tons of pellets] * 1.13 (value-added tax) + depreciation 50 + other 200.

(2) Cost composition of manganese and silicon
The main raw materials for manganese-silicon alloy production are manganese ore (including manganese-rich slag), coke, silica, etc., and the cost of manganese ore accounts for about 60% of the production cost of manganese-silicon. The cost ratio is as follows: Production of 1 ton of manganese silicon = [2 tons of manganese ore + 0.75 tons of manganese-rich slag + 0.26 tons of silica + 0.55 tons of coke + 4000 kilowatt-hours of electricity] * 1.13 (tax) + 50 (depreciation) + 200 (others) .

Ferrosilicon and manganese silicon Manufacturer of Lishi Industrial

Lishi Industrial is a Leading Ferroalloy Manufacturer in China! What do YOU care more about ferroalloy products? As the professional ferroalloy solution provider, we are committed to providing customers with the best quality products to meet theirs needs. At the same time, we continuously strive to provide comprehensive solutions and reliable customer support. Welcome to the world of Lishi Industrial Ferroalloy!


If you have any questions, please leave your contact information and we will reply to you as soon as possible.

Send Inquiry Send Email Whatsapp