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What is micro silica vapor?
Also known as silica or condensed fume, fume is a form of silica. The mine thermoelectric oven produces many gases, including SiO2 and Si, when ferroalloys (iron alloys) are used to smelt ferrosilicon or industrial silicon. It is formed through rapid oxidation. This by-product is produced during industrial smelting. It is necessary to recycle this entire process with the help of dust removal equipment and environmental protection gear. Encryption equipment is needed because of the low density.
What are the main applications of microsilica?
It is used widely in the refractory industries because it has excellent properties like high refractoriness. It is used for preparing high-temperature ceramics and ladle materials. Wang Tao et al. By using micro-silica and Al2O3 powder in a 3:2.5 ratio and a 1450degC sintering heat, they prepared high-purity mullite porous ceramics. Its compressive strength is 260.93MPa. The porosity of the material is 21%. The micro-silica can improve bulk density, strength, cohesion, and high temperature performance of refractory products. It can also be used to extend the service life and achieve internal digestion of dust produced by ferrosilicon or industrial silicon smelting companies.
Other North American companies also use pellets of silica and microsilica fume mixtures for the reduction of electric furnaces and the smelting silicon. The unit energy consumption of the product is unchanged, but the silicon recovery rate appears to be normal. Elkem in Norway will agglomerate micro-silica with water into pellets about 4 cm long, which are then reduced and smelted directly in an electrical furnace without any roasting or drying. Sintered ore can be produced at a higher temperature without any problems such as bursting. In a Russian factory, micro-silica fumes and liquid waste from paper pulp are mixed into pellets. They then undergo reduction smelting using an electric furnace. This production shows that pellets can be transported without breaking because they’re stronger than normal materials. In Northern Europe a ferrochromium firm used the microsilica powder slurry from the electric furnace silica smelting method wet as the return source of silicon and mixed it together with chromium ores to pelletize. The micro-cassia was found to improve the cohesiveness of chromium ore.
The majority of companies in the metalworking industry use microsilica fume to return materials. While this method can reduce environmental pollution due to micro-silica, it doesn’t fully exploit the magical properties of micro-silica. This is a very extensive application.
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