According to the production equipment, it can be divided into blast furnace method, electric furnace method, out-of-furnace method, converter method and vacuum resistance furnace method. electric furnace method Electric furnace is the main method of producing ferroalloys and its output is about 80% of all ferroalloys.

The blast furnace method The main equipment used in the blast furnace method is the blast furnace. The blast furnace method is the first method of ferroalloy production. The blast furnace process has advantages such as high labor productivity and low cost. However, due to the temperature limitation of the blast furnace and the complete saturation of the metal with carbon during the blast furnace melting process, this method is usually only used to produce ferroalloys with reducing elements and low-grade ferroalloys.

out method From the furnace (metal thermal method)

The out-of-furnace method uses silicon, aluminum, or an aluminum-magnesium alloy as a reducing agent, and melting occurs by relying on the chemical heat produced by the reduction reaction. . The main equipment used is a cylindrical furnace. The raw materials used include concentrate, reducing agent, flux, heating agent, steel shavings, iron ore, etc.

< font color="#000000">Oxygen converter method

< p style="text-align: justify;">The main equipment used in this method is the converter . According to the method of oxygen supply, there are composite blowing methods from top to bottom, from the side, and from bottom to top. The primary materials used are high-carbon liquid ferroalloy, pure oxygen, cooling materials, slag generator, etc. High-carbon liquid ferroalloy is added to the converter and high-pressure oxygen is blown into the furnace through an oxygen gun. . The production is carried out intermittently, depending on the heat from the oxidation reaction.

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Vacuum resistance furnace method

< p style="text-align: justify;">Vacuum resistance furnace for producing ferrochrome products It is used with microcarbon, ferrochromium nitride and ferromanganese nitride with very low carbon content. The main equipment in this method is the vacuum resistance furnace

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