Use of high-carbon ferrochromium, smelting raw material and method thereof

Another name of high-carbon ferrochromium is Dayan chromium, which is generally produced in Jilin, Shanxi, Inner Mongolia, Yingkou and other places. The weight of each piece is less than 15 kg, and its packaging can be packaged in bulk, drums, bags and other targeted packaging according to the requirements of the buyer. It is the main raw material for the production of stainless steel, and is widely used in the production of tool steel, heat-resistant steel, quenched and tempered steel, bearing steel and so on. Today, Bian Xiao introduced the main uses, smelting process and raw materials of high-carbon ferrochromium.

I. Main uses of high-carbon ferrochromium:

Firstly, it is an alloying agent applied to tool steel, ball steel and ball steel with high carbon content, which can improve the hardenability of steel to a certain extent and further increase the wear resistance and hardness of steel. In addition, the use of high-carbon ferrochrome as an additive in cast iron is helpful to improve the hardness and wear resistance of cast iron, thus improving the heat resistance of cast iron. Then it is the main raw material of medium, low and micro carbon ferrochrome, and the chromium-containing raw material for electrolytic production of metal chromium is also high carbon ferrochrome. Bian Xiao also wants to tell you that high-carbon ferrochrome is also used to smelt stainless steel by blowing oxygen.

Second, the smelting process of high carbon ferrochromium:

There are many smelting methods of high-carbon ferrochromium, including blast furnace method, plasma furnace method and electric furnace method. Special pig iron containing about 30% chromium can only be used in blast furnace. Up to now, the solvent method is generally used for high-carbon ferrochromium with high chromium content. The basic principle of smelting high-carbon ferrochrome by electric furnace method is to reduce various oxides in ferrochrome with carbon. The initial temperature of carbon reduction of chromite is1373 k k. In the whole reduction process, the carbon content of ferrochrome depends on the reaction temperature, and the final product is chromium carbide, not pure chromium.

3. Raw materials for smelting high-carbon ferrochromium:

The main raw materials used in the smelting process of high-carbon ferrochrome are coke, silica and chromite. The content of magnesia and alumina in chrome ore should not be too high, and the particle size must be between10 mm and 70 mm. In case of insoluble chrome ore, the particle size should be smaller. Then there is the requirement for coke, whose fixed carbon content is not less than 84%, and its particle size is between 3 mm and 20 mm. Finally, the requirement for silicon dioxide is good thermal stability, without any soil, and its particle size is between 20 mm and 80 mm.

These are the uses, smelting methods and raw materials of high-carbon ferrochromium that Bian Xiao gave you. High carbon ferrochromium is widely used in our life. After Bian Xiao's introduction, you should have a deeper understanding of high-carbon ferrochromium. Please look forward to Bian Xiao's next work.

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