Application of microsilica powder in metallurgical pellets
May 24, 2024
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Some companies in North America also use silica and microsilica powder mixed pelletizing ore as raw materials for electric furnace reduction silicon smelting, and found that the silicon recovery rate is normal and the energy consumption per unit product remains unchanged. A company in Norway wets microsilica powder with water and blocks it into pellets of about 4cm, which can be directly reduced and smelted in an electric furnace without the need for roasting, drying, etc. Pellets can also be sintered at high temperatures. There are no problems such as bursting during the sintering process, and the product sinter has higher strength. A Russian company mixed microsilica powder and pulp waste liquid to make pellets and performed reduction and smelting in an electric furnace. The production proved that because the pellets are stronger than ordinary materials, they are not easily broken during transportation. A ferrochrome company in Northern Europe uses the microsilica powder slurry recovered from the wet method of electric furnace silicon smelting as a return silicon source, and mixes it with chromium ore to form pellets. The production shows that microcinnamon powder can enhance the cohesiveness of chromium ore pellets.
In the metallurgical industry, most companies use microsilica powder as a return material. Although this can reduce the environmental pollution caused by microsilica fume, it does not fully utilize the magical properties of microsilica fume. This is an extensive application. When utilizing it in metallurgy, more attention should be paid to its high value-added utilization.
