The powder is industrial dust from themolten ferro silicon, silicon-industrial scrubbing flue gases. China's ferro-silicon is the world's largest manufacturer of silicon-industrial. The latent resources of fumed silica in China reached more than 150,000 tons per year. In the early forties and fifties of 20th century, abroad countries have studied on the use of silica fume. Silica fume has been used extensively in many areas.

Fully closed electric furnace ferrosilicon generally wet flue gas cleaning treatment, the use of silica dust and mud water-gas-heat-recovery material refining furnace materials first. Dust and mud in rotary kilns, the more oxidizing or reducing agent, and continue heating at 800-1400 or so, this treatment can get rid of pollutants in silica dust and mud, while the formation of pellets. Harmful substances phenol and cyanide carbon and asphalt-like substance in the pellets were removed and pellets treated to back than to the silicon metal, ferro-silicon raw material of the merger. Currently, the United States, Soviet Union have, Norway and other countries, the patent of silica fume the ball of the ball equipment.
The silicon powder in the cement industry used to add material similar to concrete, and in some countries in developing this application, the development of a variety of blended cement, the quality is better than ordinary cement. The Soviet Union had to silica dust in the manufacture of lightweight concrete, the results show that, the lower water-cement ratio and high acid resistance and fire resistance. Great Britain has a tensile strength of 160 MPa Portland cement materials using silica fume, which is the application of current to a maximum tensile strength of building materials, was used in the production a certain flexibility. The particle size of silica fume is very small, that the pain and surfactants, so that the compaction of the silica dust may ultrafine particles on the cement. The use of low water / cement ratio can be achieved a higher dose of polymers, the specific laws of conservation in the 10-times the strength of Portland cement concrete. This material instead of melting, suitable for the production of a specific component of industrial plants.

Chemical composition of fumed silica and similar physical properties such as silica, fumed silica is in the rubber industry uses good filler. Rubber added to fumed silica may progress to an extension, tensile and the manganese powder degree of aging. The gum has good dielectric properties, low water absorption. And carbon black to increase at the same time in the stretched elastic rubber materials and tensile strength. For the agglomeration of fertilizer, usually mica or diatomaceous earth to avoid a special treatment, and the high costs. The application of the silica fume substitute costly treatment of materials, but it is necessary to detect correctly, the proportion used. Norway, France and Italy, with this approach, the application of release agent is working well.

Silica-containing iron alloys by some metal powder suppliers of quartz dust in ongoing research and exploration to find a reliable income, in addition produced to the search for a variety of applications of value, but also found that, the dust used in the manufacture of refractory materials to the edge material, the anti-sintering must be entered. Fumed silica in the manufacture of resins and other polymeric compounds produced polymers, and as a substitute for black, silica, talc, asbestos, solvents, gas and other objects as an additional material. In addition, can also be used, silicon, to improve the soil. For example, a mixture of substances in the bark of waste and other waste products from the factory of silicon powder and cellulose or wood processing plant to improve soil fertility after treatment. Source:http://www.mhcmp.com