May,31,2021
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Processing technology of high purity quartz sand

The processing technology of high-purity quartz sand mainly includes classification, scrubbing, chemical acid leaching, flotation (with and without fluorine flotation), gravity separation, magnetic separation, chlorination roasting and microbial leaching. The raw materials used include vein quartz, granitic pegmatite, quartzite and quartz sand. Different raw materials are suitable for different processing methods, and different sand washing plants need to be built to produce high purity quartz sand.
Processing technology of vein quartz
Vein quartz is a kind of magmatic hydrothermal vein related to granite, and its ore body is irregular vein form in most cases.
Vein quartz is pure white, oil luster, and its purity is very high. Its mineral composition is basically quartz, and its SO2 content is more than 99%.
vein quartz
Case 1 of vein quartz processing technology
The processing technology of vein quartz ore in a quartz sand washing plant of a company in Jiangsu Province is as follows:
Raw ore: Vein quartz ore, TFe content 765.3mg/kg.
Concentrate: TFe content 0.35mg/kg
sand washing plant flowchart
Case 2 of vein quartz processing technology
The processing technology of vein quartz ore in quartz sand washing plant of a company in Jiangxi is as follows:
Raw ore:Vein quartz ore, with SiO2 content of 99.58% and Fe2O3 content of 0.03%;
Concentrate: high purity quartz sand (electronic), with SiO2 content of 99.98% and Fe2O3 content of 0.0003%; The content of SiO2 and TFe in high purity quartz sand (filling) is 99.63% and 0.0018%, respectively.
sand washing plant flowchart
Processing technology of quartzite
Quartzite is formed by siliceous rock or quartz sandstone after a series of metamorphism and thermal contact. The content of quartz mineral in quartzite is generally more than 85%, and it is often associated with tourmaline, zircon, mica, feldspar and clay. Its hardness and density are higher than those of quartz sandstone.
quartzite
Case study of quartz sand processing technology
The quartzite processing technology of a quartz sand washing plant in Anhui Province is as follows:
Raw ore: quartzite, with SiO2 content of 99.01% and Fe2O3 content of 0.118%;
Concentrate: Fe2O3 content 0.02%.
sand washing plant flowchart
Processing technology of quartz sand
Quartz sand is a kind of consolidated clastic rock with more than 95% quartz detritus. It is often associated with tourmaline, rutile, magnetite, mica, feldspar and clay.
silica sand
Case study of quartz sand processing technology
Processing technology of quartz sand in sand washing plant of a company in Anhui Province:
Raw ore: quartz sand, SiO2 content of 99.1% - 99.3%, Fe2O3 content of 150-200ppm;
Concentrate: SiO2 content is 99.62%, Fe2O3 content is 0.0062%.
sand washing plant flowchart
Granitic pegmatite
The original ore of the U.S. Unimin TOTA series high-purity quartz sand is granitic pegmatite.

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