Metallurgical Grade Metallic Silicon

Silicon is widely used in smelting ferrosilicon as alloying element in iron and steel industry and as reducing agent in many kinds of metal smelting. Silicon is also a good component in aluminum alloys, the vast majority of cast aluminum alloys contain silicon. Silicon is the raw material of ultrapure silicon in electronic industry. The electronic devices made of ultrapure semiconductor single crystal silicon have the advantages of small volume, light weight, good reliability and long life. High-power transistors, rectifiers and solar cells made from silicon single crystals doped with specific trace impurities are better than those made from Germanium single crystals. Amorphous silicon solar cell research progress quickly, the conversion rate of more than 8% . The maximum temperature of silicon-molybdenum bar electric heating element can reach 1700 °C, it has resistance not easy to aging and good oxidation resistance. Trichlorosilane, made from silicon, can be used to make hundreds of silicone lubricants and waterproof compounds. In addition, silicon carbide can be used as abrasives, and quartz tube made of high-purity silicon oxide is an important material for high-purity metal smelting and lighting. Paper of the 1980s -- Silicon was called "paper of the 1980s" . This is because paper can only record information, whereas silicon can not only record information, but also process it to obtain new information. Built in 1945, the world's first computer, with 18,000 tubes, 70,000 resistors and 10,000 capacitors, weighed 30 tons and covered an area of 170 square meters, the size of 10 houses. Today's computer, thanks to advances in technology and improved materials, can hold tens of thousands of transistors on a silicon wafer the size of a fingernail, and has a range of functions including input, output, computation, storage and control of information. Microporous calcium silicate thermal insulation material is an excellent thermal insulation material. The utility model has the advantages of small heat capacity, high mechanical strength, low thermal conductivity, non-combustion, non-toxic and tasteless, cutting, convenient transportation, etc. . After testing, energy-saving benefits than asbestos, cement, vermiculite and cement perlite insulation materials. Special silica-calcium material can be used as catalyst carrier, and is widely used in petroleum refining, automobile exhaust purification and so on.

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