Silica Fume
Silica fume is a byproduct generated during the manufacturing process of silicon alloys and ferro silicon, involving high-purity quartz, coke, and wood chips’ reduction.
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Silica Fume
Silica fume (also called microsilica), is made that during smelting silicon iron and industrial silicon, after the oxidation of silicon vapor discharged from the flue, the amorphous and powdered silicon dioxide (Sio2) is collected by specially designed dust collector. The average particle size of the silica fume is 0.1-0.15 μm, which is one of the several hundred points of the average particle size of the cement. The surface area of the surface is 15-27 m2/g, and has very strong surface activity.
Key uses of Silica Fume
Silica fume has a wide range of applications in concrete engineering, in addition to that, microsilica has a wider range of applications.
- Cement industry: Cement manufacturers will add microsilica in the process of producing cement, thus enhancing the performance of cement, and the cement standard is greatly improved.
- Rubber industry: In the process of producing rubber products, microsilica is added to improve the elongation, tear resistance and anti-aging properties of rubber, and also has better dielectric properties.
- Replacement of anti-caking agent: In the production of waste materials, silica fume can replace mica or diatomaceous earth to prevent caking of waste materials.
- Alternative binder: Because of its larger surface area and better adsorption properties, microsilica is often used as a binder in the production of pellet ore, which is not only effective but also low in price.
- Insulating material: Silica fume is widely used in the production of coatings, for example: waterproof paint, paint, ink, etc. are added to the production process, thus making itself have the insulation properties.