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Silicon metal
The silicon metal is produced from quartz and coke in an electric furnace, and the content of silicon element is about 98% (in recent years, with the content of 99.99% Si is also named silicon metal), the other impurities are mainly iron, aluminum, calcium and so on. Semiconductor silicon, which use for production of semiconductor device, is a high purity silicon metal, with polycrystalline and monocrystal form.
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