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The price of overseas silicon metal has plunged! What is metal silicon?

2021-09-22
Latest company news about The price of overseas silicon metal has plunged! What is metal silicon?

Most global commodities fell on September 20, and the VIX index, known as the "panic index," soared. Singapore iron ore futures fell sharply by more than 11%, hitting a new low since May 2020. Since setting a record high in May this year, the price of Singapore's iron ore futures has begun to plunge, and it has fallen about 60% from the high. It has become the commodity with the largest decline recently, and silicon metal has also fallen.

 

What is metal silicon? Metallic silicon, also known as crystalline silicon or industrial silicon, is mainly used as an additive for non-ferrous alloys. Metallic silicon is a product smelted from quartz and coke in an electric furnace. The main component of silicon is about 98% (in recent years, 99.99% of Si is also contained in metallic silicon). The remaining impurities are iron and aluminum. , Calcium, etc. The main component silicon content is usually above 98.5%, below 99.99%, and the remaining impurities are iron, aluminum, calcium and so on.

 

"Metallic silicon" (also called industrial silicon) is a trade name that appeared in the mid-1960s. Its appearance is related to the rise of the semiconductor industry. The international common practice is to divide commercial silicon into metal silicon and semiconductor silicon. Metallic silicon is a product smelted from quartz and coke in an electric furnace. The main component of silicon is about 98% (99.99% of Si is also contained in metallic silicon), and the remaining impurities are iron, aluminum, calcium, etc. . Semiconductor silicon is used to make high-purity metal silicon for 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 a variety of specifications due to its different uses. According to statistics, the world's total consumption of metal silicon for aluminum alloys accounts for about 60% of metal silicon, less than 30% for organic silicon, about 3% for semiconductors, and the rest for iron and steel smelting and precision ceramics.

 

From a global perspective, the consumption of metallurgical silicon is more than that of chemical silicon. However, with the continuous development of science and technology, the use of chemical silicon in the production of organic silicon and semiconductors has been expanding, and it is widely used in the production of organic silicon. Silicon monomer and polymer silicone oil, silicone rubber, silicone resin building anti-corrosion, waterproofing agent, etc., they have unique properties such as high temperature resistance, electrical insulation, radiation resistance, and waterproofing. Used in electrical, aviation, machinery, chemical, pharmaceutical, national defense, construction and other sectors.