Introduction to silicon metal

The main raw materials of metal silicon are silica, petroleum coke, wood chips, etc., which are smelted by electric furnaces and classified according to trace elements. The main purpose is to produce aluminum ingots and aluminum products, which are alloying agents (hardeners) in iron and aluminum.

Metallic silicon is also important to the electronics industry because it is the base material used to make high purity polysilicon. These products are used in the manufacture of semiconductors, microchips for computers, and solar cells for capturing electrical energy from the sun.

Metallic silicon definition: metallic silicon is also known as crystalline silicon or industrial silicon, its main use is as an additive for non-iron-based alloys. Silicon is a non-metallic element, gray, metallic color, hard and brittle. The content of silicon is about 26% of the mass of the Earth's crust. Atomic weight 28.80; The density is 2.33g/m3. The melting point is 1410°C; the Boiling point is 2355°C; The resistivity is 2140 ω.m.

Silicon metal grades: 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.

What Can Silicon Metal Be Used For?

(1) Production of silicone rubber, silicone resin, silicone oil and other silicone

Silicone rubber has good elasticity, high temperature resistance, and is used for making medical supplies and high temperature gaskets.

Silicone resin is used in the production of insulating paint, high temperature coatings and so on.

Silicone oil is a kind of oil, whose viscosity is very little affected by temperature, used for the production of advanced lubricants, glazing agents, fluid springs, dielectric liquids, etc., can also be processed into colorless transparent liquid, as an advanced waterproof agent sprayed on the surface of buildings.

(2) Manufacture high-purity semiconductors

Modern large-scale integrated circuits are almost all made of high-purity metal silicon, and high-purity metal silicon is the main raw material for the production of optical fiber, it can be said that metal silicon has become the basic pillar industry of the information age.

(3) Alloy preparation

Silicon aluminum alloy is the largest amount of silicon alloy. Silicon aluminum alloy is a strong composite deoxidizer, which can improve the utilization rate of deoxidizer, purify liquid steel and improve the quality of steel by replacing pure aluminum in the steelmaking process. Silicon aluminum alloy density is small, low coefficient of thermal expansion, and casting performance and anti-wear performance is good, with its casting alloy castings have a high impact resistance and good high pressure compactness, which can greatly improve the service life, commonly used in the production of aerospace vehicles and auto parts.

Silicon copper alloy has good welding performance and does not easily produce sparks when impacted, with explosion-proof function, can be used to make storage tanks.

Adding silicon to steel to make silicon steel sheet can greatly improve the magnetic conductivity of steel, reduce hysteresis and eddy current loss, and can be used to manufacture the core of transformers and motors to improve the performance of transformers and motors.

What is metallurgical metal silicon?

Metallurgical metal silicon, solid is dark gray, metallic luster, high melting point, good heat resistance, high resistivity,

The high-temperature melt is a good conductor, and its quality is firm and brittle. Widely used in the development of aluminum alloy catalysts, colored gold

It is a deoxidizer and smelting of special steel, can also be used as an additive for special steel, and is also used as a stringent silicon

Alloy agent for steel, deoxidizing agent for smelting special steel and non-iron base alloy.

What are the accessory products of metal silicon?

Additional products of silicon metal: include silicon powder, edge silicon, black silicon, metal silicon slag, etc. Silica powder, also known as silica powder, micro-silica powder, or silica fume, is widely used in refractory materials and concrete industries.

With the development of science and technology, the application field of metal silicon will be further expanded.