FeSiMn alloy is a mixture, mainly composed of silicon and manganese, and may also contain other alloying elements such as iron, phosphorus, etc. Its molecular formula is MnSi, in which the Mn content is usually between 60% and 85%, and the Si content is between 10% and 30%. Its color is black, with a metallic luster, and its density is approximately between 7.2 and 7.4.

SiMn alloy is prepared from high-purity electrolytic metal silicon and metal manganese in a certain proportion. When added to the steel furnace, it can play the role of deoxidation, sulfurization, dust removal, etc., so that the carbon, manganese, silicon and other elements in the molten steel can reach a proportion. SiMn alloys are generally sold in the form of blocks, powders or granules. Its main specifications include: SiMn alloy powder (0.1-1mm), SiMn alloy lump (10-100mm), briquette SiMn alloy (50-200mm), etc.

manganese silicon -2 manganese silicon -3

chemical composition

Type	Brand	Chemicol Compositions(%)
		Mn	C	Si		P		S
		Mn	C	I	II	I	II	S
Low-carbon ferromanganese	FeMn88C0.2	85.0-92.0	0.2	1.0	2.0	0.10	0.30	0.02
	FeMn84C0.4	80.0-87.0	0.4	1.0	2.0	0.15	0.30	0.02
	FeMn84C0.7	80.0-87.0	0.7	1.0	2.0	0.20	0.30	0.02
Medium-carbon ferromanganese	FeMn82C1.0	78.0-85.0	1.0	1.5	2.5	0.20	0.35	0.03
	FeMn82C1.5	78.0-85.0	1.5	1.5	2.5	0.20	0.35	0.03
	FeMn78C2.0	75.0-82.0	2.0	1.5	2.5	0.20	0.40	0.03
High-carbon ferromanganese	FeMn78C8.0	70.0-82.0	8.0	1.5	2.5	0.20	0.33	0.03
	FeMn74C7.5	70.0-77.0	7.5	2.0	3.0	0.25	0.38	0.03
	FeMn68C7.0	65.0-72.0	7.0	2.5	4.5	0.25	0.40	0.03

The production process of ferrosilicon-manganese alloy mainly includes the following steps

1. Ingredients:

Mix ferrosilicon, ferromanganese and other alloying elements in proportion according to the required chemical composition.

2. Blast furnace smelting:

Put the mixed raw materials into the blast furnace and smelt at high temperature.

3. Casting:

The smelted alloy is poured into the casting mold and cooled to form a silicon-manganese alloy ingot.

4. Crushing an screening:

Crush silicon-manganese alloy ingots into particles of a certain size, and then screen them to obtain products that meet specifications.

FeSiMn alloy is mainly used in the following three aspects in the steel industry

1. Deoxidizer:

As an effective deoxidizer, MnSi alloy can reduce the oxygen content in molten steel and improve the quality of steel.

2. Alloy additives:

Silicon and manganese in silicon-manganese alloys are important alloying elements that can improve the mechanical and physical properties of steel.

3. Adjust the carbon content of steel:

By controlling the amount of silicon-manganese alloy added, the carbon content of steel can be adjusted, thereby changing the hardness, strength and other characteristics of the steel.

Manganese Silicon