Beneficiation method for extracting high-purity silica powder from quartz tail mud

Abstract

The invention discloses a beneficiation method for extracting high-purity silica powder from quartz tail mud. The method aims at solving the problems that the quartz tail mud is high in mud content and high in metal impurity content, the quality and whiteness of the silica powder are affected by organic matter, and the beneficiation cost is high. The method specifically comprises the following steps: mixing quartz tail mud, desliming in a separating tower, grinding ore, controlling grading, carrying out superconducting magnetic separation, filtering, drying and the like. According to the extracted high-purity ultra-white silicon micropowder product, the content of silicon dioxide is 99.30 wt%-99.50 wt%, the content of ferric oxide is 0.0078 wt%-0.013 wt%, the natural whiteness is 90-96, and the burning whiteness is 95-98 (the temperature is kept at 1200 DEG C for 30 minutes).

Description

Technical field [0001] The present invention relates to extracting high-purity silicon micron powder distribution methods from quartz biscuits, which belongs to the field of mineralization technology. Background technique [0002] Quartz is a common non-metallic mineral resource. Quartz powder can be obtained by purifying high-purity silicon powder by purifying processing, but also has a very stable physical and chemical characteristics, not only widely used in traditional industries such as metallurgy, sheets, coatings. At the same time, at the same time, in the high-tech industry, such as aerospace, solar, chip, etc. also have an irreplaceable status and role. [0003] Aluminum, iron and mud (mainly clay) in the silica resources and stone, mud (mainly clay) are high due to lack of purity and cannot be effectively developed, and can only be used for industries of low-end requirements, economic value is not High, or even abandoned without economic value, causing excessive stacks ...

AI Technical Summary

Problems solved by technology

The process is complicated, the production cost is high, the environment is polluted, and impurities such as "yellow skin" and "black spots" in the silica powder cannot be effectively removed, which has become a technical "bottleneck" problem in the industry and has always restricted the development of the quartz tailings deep processing industry. , causing a large amount of valuable non-metallic minerals in the quartz tailings to not be effectively recovered and utilized in time

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