Introduction
Silicon metal is also called crystalline silicon or industrial silicon, and its main use is as an additive to non-iron based alloys. Silicon metal is made of quartz and coke in the electric furnace smelting products, the main component of silicon content in about 98% (in recent years, Si content of 99.99% is also included in the silicon metal), the rest of the impurities are iron, aluminum, calcium, etc.
Classification
The classification of silicon metal is usually classified by the content of iron, aluminum and calcium three main impurities contained in the silicon metal composition. According to the content of iron, aluminum and calcium in silicon metal, silicon metal can be divided into 553, 441, 411, 421, 3303, 3305, 2202, 2502, 1501, 1101 and other different grades.
