What Is Silicon Manganese?

Silicon-manganese alloy is an alloy composed of manganese, silicon, iron and a small amount of carbon and other elements. It is an iron alloy with a wide range of uses and a large output. Silicon-manganese alloy is a composite deoxidizer commonly used in steelmaking, and it is also a reducing agent for the production of low-carbon ferromanganese and electro-silicon thermal metal manganese. The silicon-manganese alloy can be smelted in a continuous operation in large, medium and small ore furnaces.

Silicon-manganese alloy is mainly used as a deoxidizer and alloying agent in the production of iron and steel, and it is also the main raw material for the production of medium and low-carbon ferromanganese.

Silicon-manganese alloy is an alloy composed of manganese, silicon, iron, and a small amount of carbon and other elements. It is a widely used and large-yield alloy.

Reserves are mainly concentrated in South Africa, Mozambique, Australia, Russia, Myanmar, Gabon and other countries. China's manganese ore mines are located in Liaoning, Hunan, Sichuan, Guangxi and other regions, but because of low grades, a large amount of high-grade manganese ore needs to be imported from abroad every year for use. .

Furnace manganese ore grade should be above 30%. Domestically, all manganese ore is depleted. Some manganese-rich ore (more than 30%) need to be imported mainly from Brazil, Gabon, Australia and other countries. According to incomplete statistics, for every 1% reduction in manganese grade, the power consumption of silicon-manganese alloys increases by 135KWh. Increasing the grade of manganese ore into the furnace as much as possible is an important means to improve the recovery rate of manganese, reduce power consumption, and improve other indicators.

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The sign of normal furnace condition of silicon-manganese alloy production is stable working current, full-load operation, balanced and deep electrode insertion, uniform electrode consumption speed, and normal decentralization. The length of the decentralization is about 200mm per hour. Plugging, smooth iron and slag discharge, high temperature, good slag iron fluidity, easy to separate. The alloy composition is stable, m (CaO + MgO) / m (SiO ₂ ) in the slag is between 0.7 and 0.8, and MnO is below 10%. The furnace gas composition is normally less than 2% O _{2 and} less than 8% H _{2. The} furnace has a slight negative pressure (-49Pa), and the temperature in the furnace is lower than 600 ° C. ^[2]