Definition Of Metal Silicon

"Metallic silicon" (also called industrial silicon in my country) is a commodity name that appeared in the mid-1960s. Its emergence is related to the rise of the semiconductor industry. The international common practice is to divide commodity silicon into metal silicon and semiconductor silicon. Silicon metal is a product smelted by quartz and coke in an electric heating furnace. The content of the main component silicon is about 98% (the content of Si content of 99.99% is also included in the metal silicon), and the remaining impurities are iron, aluminum, calcium, etc. . Semiconductor silicon High-purity metal silicon used to make semiconductor devices. It is sold in the form of polycrystalline and single crystal, the former is cheap and the latter is expensive. It is divided into various specifications due to different uses. According to statistics, in 1985, the world consumed about 500,000 tons of metal silicon, of which about 60% was used for aluminum alloys, less than 30% was used for organic silicon, about 3% was used for semiconductors, and the rest was used for Steel smelting and precision ceramics, etc.