Analysis of the development status of China's metal silicon industry in 2021
Metallic silicon, also known as crystalline silicon or industrial silicon, is primarily used as an additive for non-iron based alloys. Silicon metal is made of quartz and coke in the electric furnace smelting products, the content of the main component silicon element is about 98% (containing 99.99% Si content is also included in silicon metal), the remaining impurities are iron, aluminum, calcium and so on. The classification of silicon metal is usually classified according to the content of the three main impurities of iron, aluminum and calcium contained in its components. 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.
During 2016-2020, the global silicon metal production showed a trend of first rising and then declining, during 2016-2018, due to the rapid development of global solar photovoltaic, new energy vehicles, electronic information and other fields, the demand continues to increase, and the global silicon metal production increased year by year, reaching 3.52 million tons in 2018. In 2019, affected by lower demand from downstream industries and lower silicon prices, global industrial silicon production has declined. In 2020, due to the impact of the epidemic, production fell further, to only 3.03 million tons.
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