Industrial silicon, also known as metallic silicon, is mainly used as alloy element and reducing agent in iron and steel casting industry. In addition, because silicon in industrial silicon is also a good component in aluminum alloy, most cast aluminum alloys contain silicon. Silicon is the raw material of ultra pure silicon in electronic industry. Electronic devices made of ultra pure semiconductor monocrystalline silicon have the advantages of small volume, light weight, good reliability and long service life. High power transistors, rectifiers and solar cells made of silicon single crystal doped with specific trace impurities are better than those made of germanium single crystal. The research of amorphous silicon solar cells has made rapid progress, and the conversion rate has reached more than 8%. The service temperature of silicon molybdenum rod electric heating element can be as high as 1700 ℃, with resistance not easy to aging and good oxidation resistance.
