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The production process of metal silicon 441

DATE: Nov 8th, 2022
The main raw materials of metal silicon 441 are silica, petroleum coke, wood chips, etc., which are smelted by electric furnace. So do you know the production process of metal silicon 441? Let's take a look at it together:

         1) After washing, sieving and drying the raw material silica, according to the type of reducing agent used, it is prepared in different proportions, and the proportion of each material is controlled by a computer program. Mixing and entering into the electric furnace; the high degree of automation and large-scale feeding process is carried out continuously.

         2) The current is connected to the electrode to heat the material in the skull, reaching a high temperature of more than 1800 degrees Celsius. The silicon is reduced in the skull and is in a liquid state. It is released through the silicon outlet and cast into a silicon ingot. After crushing, according to the customer the required size for packaging.

         3) The bottom blowing method is adopted by mixing oxygen and air. The bottom blowing oxygen permeable brick is installed in the bottom of the bag. There are many thin copper tubes in the permeable brick. The oxygen and air are blown from the thin copper tubes to the silicon melt for refining. , the air also forms a positive pressure into the silicon melt through the breathable brick after the oxygen blowing. Stirring is required in the refining process, and the stirring is carried out with compressed air. The purpose is to improve the kinetic conditions of the slag-metal element phase reaction, accelerate slag formation, remove impurities as soon as possible, and reduce heat loss and silicon liquid sticking.

         The above is the production process of metal silicon 441. I hope the above sharing will be helpful to you. If you have any questions related to metal silicon 441 in the later stage, you can leave us a message on the website in time.