Metallic silicon, also known as crystalline silicon or industrial silicon, is mainly used as an additive in non-ferrous alloys. Silicon is a non-metallic element, gray in color, metallic in color, hard and brittle in nature. The content of silicon accounts for about 26% of the crustal mass; Atomic weight is 28.80; The density is 2.33g/m3; The melting point is 1410C; Boiling point is 2355C; The resistivity is 2140 Ω· m.
The grades of metallic silicon: According to the content of iron, aluminum, and calcium in metallic silicon, it can be divided into different grades such as 553, 441, 411, 421, 3303, 3305, 2202, 2502, 1501, 1101, etc.
Additional products of metallic silicon include silicon micro powder, edge silicon, black silicon, metallic silicon slag, etc. Silicon micro powder, also known as silicon powder, microsilica powder or silica fume, is widely used in the refractory and concrete industries.
The use of metallic silicon
Metallic silicon (Si) is an industrial purified elemental silicon, mainly used for the production of organic silicon, the production of high-purity semiconductor materials, and the preparation of alloys with special purposes.
(1) Production of silicone rubber, silicone resin, silicone oil and other organic silicon
Silicone rubber has good elasticity and high temperature resistance, and is used to make medical supplies, high-temperature resistant gaskets, etc.
Silicone resin is used in the production of insulation paint, high-temperature coatings, etc.
Silicone oil is an oily substance whose viscosity is minimally affected by temperature. It is used in the production of advanced lubricants, polishes, fluid springs, dielectric liquids, etc. It can also be processed into a colorless and transparent liquid, which can be sprayed on building surfaces as an advanced waterproofing agent.
(2) Manufacturing high-purity semiconductors
Almost all modern large-scale integrated circuits are made of high-purity metal silicon, which is also the main raw material for producing optical fibers. It can be said that metal silicon has become the fundamental pillar industry of the information age.
(3) Prepare alloy
Silicon aluminum alloy is a silicon alloy with a large usage. Silicon aluminum alloy is a strong composite deoxidizer that can replace pure aluminum in steelmaking processes to improve the utilization rate of deoxidizers, purify molten steel, and improve steel quality. Silicon aluminum alloy has low density, low thermal expansion coefficient, good casting performance and wear resistance. The alloy castings cast with it have high impact resistance and good high-pressure density, which can greatly improve the service life. It is commonly used in the production of aerospace and automotive parts.
Silicon copper alloy has good welding performance and is not prone to sparking when subjected to impact. It has explosion-proof function and can be used to make storage tanks.
Adding silicon to steel to make silicon steel sheets can greatly improve the magnetic conductivity of steel, reduce hysteresis and eddy current losses, and can be used to manufacture iron cores for transformers and motors, improving their performance.
Screening need
Screening purpose: classification
Using equipment: Rotary vibrating screen/ultrasonic vibrating screen/linear vibrating screen
Screening mesh size: 100~300mesh
Screening capacity: 100kg~18t/h
