High-purity quartz sand preparation process

Abstract

The invention provides a high-purity quartz sand preparation process. The high-purity quartz sand preparation process comprises the steps of carrying out artificial mineral processing according to themass of quartz ore raw materials by breaking through a traditional quartz sand process mode; washing the quartz ore raw materials with flowing water; crushing the quartz ore raw materials into quartzore particles by using a cone crusher; heating the quartz ore particles and then cooling the same; filtering out the quartz ore particles from water and then air-drying the quartz ore particles; grinding the quartz ore particles into quartz coarse sand, screening out the quartz coarse sand of which the grain size is smaller than the set mesh number in a process of grinding quartz ore particles, and adding fine quartz ground sand in the quartz coarse sand and grinding the mixture; filtering out quartz ground sand, impurities and quartz sand with over-small grain size in the ground quartz coarse sand; carrying out pulse dust removal on the filtered quartz coarse sand to obtain quartz coarse sand without dust; carrying out magnetic separation on the quartz coarse sand without dust; carryingout color sorting on the magnetically separated quartz coarse sand by using a color sorting machine; and carrying out microwave irradiation on the magnetically separated quartz coarse sand.

Description

technical field [0001] The invention relates to the field of sand and gravel processing technology, in particular to a preparation technology of high-purity quartz sand. Background technique [0002] Quartz sand is a quartz particle made by crushing quartz stone. Quartz stone is a non-metallic mineral, a hard, wear-resistant, chemically stable silicate mineral. The color of quartz sand is milky white, or colorless and translucent, with a Mohs hardness of 7. [0003] High-purity or refined quartz sand is an important industrial mineral raw material, widely used in glass, casting, ceramics and refractory materials, metallurgy, construction, chemical industry, plastics, rubber, abrasives and other industries. Common specifications: 2-4 mesh, 4-6 mesh, 6-10 mesh, 10-20 mesh, 20-40 mesh, 40-80 mesh, 80-120 mesh, 120-200 mesh, 200 mesh, 325 mesh, 800 mesh Mesh, 1250 mesh, 2500 mesh; 0.5-1.0mm 0.6-1.2mm 1-2mm 2-4mm 4-8mm 8-16mm 16-32mm. (mm is millimeter unit). [0004] The pro...

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Problems solved by technology

[0005] This invention is similar to most other high-purity or refined quartz sand production processes on the market, all of which require multiple acid leaching processes. The process is complicated, high in cost, low in efficiency, and produces a large amount of acidic chemical liquid or articles, which is harmful to the human body, geology, Damage and pollution of water resources, etc.

Moreover, in some special fields, the purity of quartz sand is required to be higher, and the purity of quartz sand produced by most existing processes is difficult to meet the requirements

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