the use of silicon metal
Silicon is widely used in smelting into ferrosilicon alloys as alloying elements in the iron and steel industry, and as a reducing agent in many kinds of metal smelting. Silicon is also a good component in aluminum alloys, the vast majorityCast aluminum alloyBoth contain silicon. Silicon is the raw material of ultra-pure silicon in the electronics industry, and electronic devices made of ultra-pure semiconductor monocrystalline silicon have the advantages of small size, light weight, good reliability and long life. It is made of silicon single crystals doped with specific trace impuritiesHigh-power transistors, rectifiers and solar cells, better than those made of germanium single crystals.
production method of silicon metal
It is reduced by mixing silica with a Si02 content of about 95% and coke with a low ash content, and heating it to about 1900°C. The purity of silicon prepared by this method is 97%~98%, which is called silicon metal. Then the silicon metal is melted and recrystallized, and the impurities are removed with acid, and the purity is 99. 7%～99. 8% silicon metal. If it is to be made into silicon for semiconductors, it must be converted into an easy-to-purify liquid or gas form, and then distilled and decomposed to obtain polysilicon, and if high-purity silicon is obtained, further purification is required.
contact
Soyee Cheng
ZHEN AN INTERNATIONAL CO.,LTD
Mobile: +86-17737626416 (WhatsApp)
Emaill: soyee@zaferroalloy.com
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Head office: Huafu Business Center, Wenfeng district, Anyang City, Henan Province, China
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