Silico Manganese, also known as silicon manganese alloy, is a large, silver-lustrous composite deoxidizer frequently used in steelmaking. It serves as a reducing agent in the production of low-carbon ferromanganese and the electro-silicothermal production of metal manganese. When added to steel, manganese iron alloy improves reduction, and enhances the steel’s toughness, hardness, strength, and elasticity. Silicon acts as an effective graphitizing agent, converting carbon in cast iron into free graphitic carbon. Standard gray cast iron and ductile cast iron require a minimum of 4% silicon. Typically, manganese and silicon are introduced to molten steel through ferromanganese, silicomanganese, and ferrosilicon.
The primary specifications for raw materials used in silicomanganese production are as follows:
Silico manganese alloy is created through the reduction of manganese oxide and silicon dioxide present in manganese ore and silica using charcoal in a carbothermic furnace. This smelting process involves several key raw materials and agents:
These components are continuously fed into an electric furnace, where the carbothermic reduction takes place, producing silico manganese alloy.
| Silico manganese code | Chemical composition(%) | ||||||
|---|---|---|---|---|---|---|---|
| Si | Mn | C | P | P | P | S | |
| Ι | Ⅱ | Ⅲ | |||||
| ≤ | ≤ | ≤ | ≤ | ≤ | |||
| FeMn64Si27 | 25.0-28.0 | 60.0-67.0 | 0.5 | 0.10 | 0.15 | 0.25 | 0.04 |
| FeMn67Si23 | 22.0-25.0 | 63.0-70.0 | 0.7 | 0.10 | 0.15 | 0.25 | 0.04 |
| FeMn68Si22 | 20.0-23.0 | 65.0-72.0 | 1.2 | 0.10 | 0.15 | 0.25 | 0.04 |
| FeMn64Si23 | 20.0-25.0 | 60.0-67.0 | 1.2 | 0.10 | 0.15 | 0.25 | 0.04 |
| FeMn68Si18 | 17.0-20.0 | 65.0-72.0 | 1.8 | 0.10 | 0.15 | 0.25 | 0.04 |
| FeMn64Si18 | 17.0-20.0 | 60.0-67.0 | 1.8 | 0.10 | 0.15 | 0.25 | 0.04 |
| FeMn68Si16 | 14.0-17.0 | 65.0-72.0 | 2.5 | 0.10 | 0.15 | 0.25 | 0.04 |
| FeMn64Si16 | 14.0-17.0 | 60.0-67.0 | 2.5 | 0.20 | 0.20 | 0.30 | 0.05 |
YY Metal is an industry-leading company focused on producing ferroalloy charge and metallurgical refractory products. Our dedication to research and development in ferroalloy deep-processing and refractory materials aims to enhance energy efficiency and reduce consumption in the iron and steel metallurgy sector. As a premier silico manganese manufacturer in China, our product lineup includes silicon metal, silicon manganese alloy, ferrosilicon, silicomanganese briquettes, silicon carbide, and specialized silica sol silicon powder.
