Preparation method of high-purity quartz sand without flocculation

By employing a process involving two-stage magnetic separation, segmented heating activation, composite acid washing, and three-stage drying, the problem of incomplete removal of impurities from quartz sand was solved, enabling the preparation of high-purity quartz sand and reducing production costs and energy consumption.

CN122403759APending Publication Date: 2026-07-17
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Filing Date
2026-05-18
Publication Date
2026-07-17

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Abstract

本申请属于石英砂提纯技术领域，具体涉及一种无絮状物高纯石英砂的制备方法。先将石英原料破碎，经振动筛分级去除超标大块与细粉杂质，得到预处理矿料；再将预处理矿料调制成指定浓度矿浆，经两级磁选、两段升温活化、水淬处理制得活化矿料；随后加入复合酸液完成两段酸洗，酸洗后调浆通过两次分步浮选脱除杂质；再经酸漂洗与水漂洗净化，最终利用煅烧余热对矿料三段烘干，制得目标高纯石英砂。本申请制备的石英砂没有絮状夹杂，杂质少、白度好，能满足石英坩埚的制作要求，同时还能节省能耗、降低成本。
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Citation Information

Patent Citations

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  • Rinsing process for deep cleaning of purified natural quartz

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