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Quartz sand is a granular siliceous material made from natural quartz ore through crushing, screening, water washing and magnetic separation, with silica content ≥99.0%, mud content ≤0.05%, and particle size 0.5–20mm. Divided into general quartz sand, refined quartz sand and high-purity quartz sand, it has a Mohs hardness of 7 and temperature resistance ≤1700℃. General quartz sand is used for water treatment filter media and glass manufacturing, refined quartz sand for ceramic raw materials and foundry sand, and high-purity quartz sand as a core raw material for the photovoltaic and semiconductor industries, with characteristics of high filtration precision and strong chemical stability.