application

Metallic silicon is also called crystalline silicon or industrial silicon. Silicon is a non-metallic element, blue-gray, metallic color, hard and brittle. The grade classification of metallic silicon is usually classified according to the content of the three primary impurities of iron, aluminum, and calcium contained in the metallic silicon component. According to the content of iron, aluminum and calcium in silicon metal, silicon metal can be divided into different grades such as 553, 441, 411, 421, 3303, 2202, and 1101.

Silicon metal is mainly used in the following areas：

1、Metal silicon is mainly used in aluminum ingot factories

Generally, the addition of metal silicon is used to improve the mechanical properties of aluminum, which is a common method in the preparation of aluminum alloys. For example, in the application of aluminum alloy die-casting, silicon can improve the degree of forming and increase the yield.

2、In the aluminum alloy industry

replacing pure aluminum in the steelmaking process can increase the utilization rate of deoxidizers, purify molten steel, and improve the quality of steel. The demand for industrial silicon for aluminum used in automobiles and other industries is quite large, so the development of the automobile industry in a region or country has a direct impact on the rise and fall of the industrial silicon market.

3、Additives for non-ferrous-based alloys.

Industrial silicon is also used as an alloying agent for demanding silicon steels, and as a deoxidizer for smelting special steels and non-ferrous-based alloys.

4、Chemical industry
Used in the production of silicone rubber, silicone resin, silicone oil and other organic silicon. Silicone rubber has good elasticity and high temperature resistance. It is used to make medical supplies, high temperature gaskets, etc. Silicone resin is used to produce insulating paint, high-temperature paint, etc. Silicone oil is an oily substance whose viscosity is not affected by temperature. It is used to produce lubricants, polishes, fluid springs, dielectric liquids, etc. It can also be processed into colorless and transparent liquids.

5、Metal silicon is purified by a series of processes to produce polycrystalline silicon and monocrystalline silicon for use in the photovoltaic industry and the electronics industry. Polycrystalline silicon cells are mainly used in solar rooftop power stations, commercial power stations and urban power stations with high land costs. The current technology is mature and widely used. The demand for metal silicon for solar photovoltaic products has increased significantly, and modern large-scale integrated circuits are almost all used It is made of high-purity metallic silicon, and high-purity metallic silicon is still the main raw material for the production of optical fibers. It can be said that metallic silicon has become a basic pillar industry in the information age.