First of all, metallic silicon powder and silicon powder are not the same product, there are essential differences. Metal silicon powder: It is powdered silicon powder made from grinding metal silicon (industrial silicon). Metallic silicon, also known as crystalline silicon or industrial silicon, is mainly used as an additive for non-ferrous alloys. Industrial silicon is also used as an alloying agent for silicon steel with strict requirements and as a deoxidizer for smelting special steel and non-ferrous alloys. After a series of processes, industrial silicon can be pulled into single crystal silicon for use in the electronics industry.
Use of metal silicon powder
Metallic silicon powder is widely used in refractory materials and powder metallurgy industries to improve the high temperature resistance, wear resistance and oxidation resistance of products. Its products are widely used in steelmaking furnaces, kilns and kiln furniture.
In the silicone chemical industry, metallic silicon powder is the basic raw material for synthesizing silicone polymers, such as silicon monomer, silicone oil, silicone rubber preservatives, etc., to improve the product’s high temperature resistance, electrical insulation, corrosion resistance, and corrosion resistance. Water resistance and other properties.
Metal silicon powder is drawn into single crystal silicon. The processed silicon wafer is widely used in high-tech fields and is an indispensable raw material for integrated circuits and electronic components.
In the metallurgical casting industry, metallic silicon powder is used as a non-ferrous alloy additive and silicon steel alloy agent to improve the hardenability of steel. Industrial silicon powder can also be used as a reducing agent for certain metals, such as new ceramic alloys.
Silica powder
Silica fume, also known as silica fume, is dust recovered from the production of metallic silicon or iron alloys. Because the silica content in silica powder is very high and the particles are small, it is widely used not only in the rubber and coating industries, but also in concrete and other industries! Silica fume has pozzolanic activity.
Silica powder uses:
Control the segregation and bleeding of concrete materials, and reduce or avoid defects such as honeycombs, pitted surfaces, weak interlayers, cracks and milk skin in concrete.
Improve the compressive strength of concrete. Experiments show that silica fume can greatly improve the strength of concrete.
Improve the durability of concrete and improve the impermeability, frost resistance, wear resistance and corrosion resistance of concrete.
Improve the carbonation resistance of concrete. For reinforced concrete, the unfair incorporation of silica fume can improve the bonding strength between the matrix and the steel bars, and can also enhance the corrosion resistance of the steel bars.
Improve the fluidity and density of refractory materials, and improve the high-temperature strength and thermal shock resistance of refractory materials.
Silicon powder and metallic silicon powder are two completely different products. In the process of practical application, these two products are often confused because they are inextricably linked. We usually refer to silica fume, also known as silica fume and silica fume, which is the flue gas recovered during the production of metallic silicon or iron alloys. Because of its high silica content, fine particles and high activity, it is widely used in concrete refractory materials, rubber coatings and other industries. It is very important that there is a big difference in price between silicon powder and metal silicon powder. The price of metal silicon powder is several times that of silicon powder.
