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HomeAnswerThe Properties and Main Application Fields of Microsilica |

The Properties and Main Application Fields of Microsilica |


What’s micro silica fume?


Micro-silica

Fume is also known as condensed silica smoke or silica fume. Many volatile SiO2 or Si gases can be produced when ferroalloys (metal silicon) are used in ferrosilicon and metal silicon smelting. Rapid oxidation, precipitation and condensation are the main processes that produce it. It’s a result of industrial smelting. This entire process must be recycled using dust removal and equipment for environmental protection. Encryption equipment is needed because of the low density.


These are the main areas where microsilica is used

It has exceptional properties like high refractoriness, and it is used extensively in the refractory sector. It’s used primarily to produce high-temperature ceramics. Wang Tao et al. By using pressureless sintering and microsilica powder, high-purity porous Mullite Ceramics were made. They underwent gel injection molding with micro-silica powder. Their ratio was Al2O3 and SiO2 3:1 and their sintering temperature at 1450degC. It has an compressive strength. The porosity is 260.93MPa. Micro-silica fume is capable of improving the bulk density, fluidity and strength of refractory material, as well as the high-temperature and cohesion performance. It also allows for internal digestion, clean production and the removal of industrial silicon and ferrosilicon smelting enterprise dust.

North America-based companies may also utilize silica fume mixed pellets and microsilica fume as raw materials to reduce electric furnaces and smelt silicon. Their results showed that silicon recovery rates are normal. However, the unit product energy use is not affected. Elkem Norway can wet microsilica powder using water. The pellets will be approximately 4cm in diameter and can then be reduced to a smaller size and heated up in an electric furnace. Also, the pellets can be sintered at high temperatures. There is no risk of the product sintered having a higher ore strength. Russian company mixes microsilica fumes with waste paper pulp to create pellets. They then reduce the smelting process in an electrical furnace. They are much stronger than regular materials and are difficult to break down during transport. This is evident from the results of this production. One ferrochromium firm used the microsilica powder slurry from the electric furnace silica smelting process wet as its return silicon source. It was then combined with chromium to form pellets. It was shown that the micro-cassia powder can improve the consistency of the chromiumore pellets.

Many companies use microsilica fume in their metallurgical industries as a back material. While this reduces the impact of micro-silica fume on the environment, it is not able to fully exploit its magical properties. This is a broad application.

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