Classification and use of silicon metals

Metal silicon is also known as crystalline silicon or industrial silicon, its main use is as an additive in non-iron based alloys.Industrial silicon is also used as an alloying agent for strict requirements of silicon steel, smelting special steel and non-ferrous alloy deoxidizer.The silicon metal is mainly composed of silicon, so it has similar properties to silicon.The properties of silicon metal and germanium, lead, tin similar, with semiconductor properties.

The classification of silicon metal is usually based on the content of iron, aluminum and calcium, the three main impurities contained in the composition of silicon metal.According to the content of iron, aluminum and calcium in metal silicon, metal silicon can be divided into 553, 441, 411, 421, 3303, 3305, 2202, 2502, 1501, 1101 and other different grades.

The silicon metal is used in the production of organosilicon, the production of high purity semiconductor materials and the preparation of alloys for special purposes. The common silicon metal uses are:

(1) the production of silicone rubber, silicone resin, silicone oil and other silicone.

(2) Manufacturing high purity semiconductors.

(3) alloy preparation.

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