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A special trapping device is used to collect and process smoke and dust that are released with waste gases during the smelting of industrial silicon and iron-silicon in an electric industrial furnace. Silicon fume is the name given to the smoke and dust that escapes from an industrial electric furnace. It contains 90% SiO2, the particles are very small and average size is near nanometers.
Performance and usage of silicon powder
The fine processing of silicon powder involves crushing, purifying and grinding quartz (also known as silica dioxide). It has a high degree of purity, a white color, and a good particle size distribution. It is unique and has a wide range applications.
Silicon Powder Performance
(1) Good insulation is achieved by silicon powder: Due to its high purity and low impurity levels, as well as the stable performance of the product, it has excellent insulation properties and resistance to arcs.
(2) Silicone powder can reduce exothermic peak temperatures of the curing reaction, and reduce linear expansion coefficients and shrinkage rates of the cured products, eliminating internal stress in the cured products and preventing cracking.
Silicon powder does not react easily with other substances. Silicon powder also doesn’t chemically react to most acids or alkalis. The particles are uniformly distributed on the surface and exhibit strong corrosion resistance.
(4) The particle size of silicon powder is reasonable. This allows for a reduction in precipitation, delamination, and wear resistance. Improve flame retardant properties.
(5) Silicon powder with silane coupling agent is well suited to various resins. It has good adhesion performance, is easy to blend, and doesn’t agglomerate.
The organic resin is filled with this filler, resulting in a product that not only performs better but costs less.
Preparation silicon powder
The preparation of silicon using blocks as the raw material is possible in many ways. There are four methods that produce better results and have a wider application: the Raymond method (also called the roller mill), the disc grinding method and the punching-and-spinning method. The Raymond method is used, as well as the roller mill, disc (also known vertical mill), and the punching and spinning methods. According to the milling principle, the first 3 are extrusion crushers, while the last are impact crushers. The structure of each mill is very different. Each has its advantages and disadvantages.
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The use of silicon powder
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