The use of metal silicon Silicon metal (Si) is industrially purified elemental silicon, which is mainly used for the production of organic silicon, the preparation of high-purity semiconductor materials, and the preparation of alloys for special purposes.
(1) Production of silicone rubber, silicone resin, silicone oil and other silicones
Silicone rubber has good elasticity and high temperature resistance, and is used to make medical supplies, high temperature gaskets, etc. Silicone resins are used in the production of insulating paints, high temperature coatings, etc. Silicone oil is an oily substance whose viscosity is little affected by temperature. It is used in the production of advanced lubricants, glazing agents, fluid springs, dielectric liquids, etc. It can also be processed into colorless and transparent liquids and sprayed as advanced waterproofing agents. on the building surface.


Manufacturing high-purity semiconductors
Almost all modern large-scale integrated circuits are made of high-purity metal silicon, and high-purity metal silicon is also the main raw material for the production of optical fibers. It can be said that metal silicon has become the basic pillar industry of the information age.


Formulated Alloys
Silicon aluminum alloy is the most widely used silicon alloy. Silicon aluminum alloy is a kind of strong composite deoxidizer, which can improve the utilization rate of deoxidizer by replacing pure aluminum in the steelmaking process, and can purify molten steel and improve the quality of steel. Silicon aluminum alloy has low density, low thermal expansion coefficient, good casting performance and anti-wear performance. The alloy castings cast with it have high impact resistance and good high pressure compactness, which can greatly improve the service life. It is often used to produce aerospace vehicles. and auto parts.
Silicon copper alloy has good welding performance, and it is not easy to generate sparks when it is impacted. It has explosion-proof function and can be used to make storage tanks.
Silicon is added to steel to make silicon steel sheet, which can greatly improve the magnetic permeability of steel, reduce hysteresis and eddy current loss, and can use it to make iron cores of transformers and motors to improve the performance of transformers and motors. With the development of science and technology, the application field of metal silicon will be further expanded.


Silica is a raw material for the manufacture of glass, quartz glass, water glass, optical fiber, important components of the electronic industry, optical instruments, handicrafts and refractory materials, and is an important material for scientific research.


Uses of silica: flat glass, glass products, foundry sand, glass fiber, ceramic glaze, sandblasting for rust prevention, sand for filtration, flux, refractory materials and the manufacture of Lightweight Concrete (Autoclaved Lightweight Concrete). Silica has many uses. Crystals, which are relatively rare in nature, can be used to manufacture important components in the electronic industry, optical instruments and handicrafts. Silica is an important raw material for the manufacture of optical fibers. Generally purer quartz can be used to make quartz glass. Quartz glass has a small expansion coefficient, equivalent to 1/18 of ordinary glass, can withstand drastic changes in temperature, and has good acid resistance (except HF). Therefore, quartz glass is often used to manufacture high temperature resistant chemical instruments. Quartz sand is often used as glass raw material and building material.