Metal silicon, also known as crystalline silicon or industrial silicon, is mainly used as an additive to non-ferrous based alloys. Metal silicon is a product made of quartz and coke in an electric furnace. The content of silicon in the main component is about 98% (including 99.99% of Si is also contained in metal silicon), and the other impurities are iron, aluminum, calcium, etc. .
Metal silicon can be divided into 553, 441, 411, 421, 3303, 3305, 2202, 2502, 1501, 1101 and other different grades.