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<p>High-purity quartz has been widely used because of its unique physical and chemical properties, but the purification of quartz faces challenges such as high costs, technical complexity, and environmental pollution. To address the above issues, this study employed superconducting high-gradient magnetic separation (S-HGMS) technology to efficiently and cost-effectively produce high-purity quartz in an environmentally friendly way. This study integrates theoretical simulations and experimental approaches to investigate the effects of the matrix shape and angle, as well as the angle <i>θ</i> between the radial direction and the magnetic field direction, on the separation process and particle motion trajectories during the S-HGMS process. By employing a specific configuration of magnetic media and optimizing the process parameters, we achieved optimal separation, resulting in the production of a high-quality quartz concentrate. The SiO<sub>2</sub> grade improved from 97.305% to 98.91%, while the recovery rate reached 90%. Under precise process parameters, the S-HGMS process can effectively separate weak magnetic substances from high-purity quartz raw ore. This significantly reduces the difficulty of the subsequent fine purification process, ultimately leading to the production of higher-grade high-purity quartz products.</p>

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Purification of SiO2 in Quartz Ore by Superconducting HGMS: A Simulation Analysis and Experimental Study

  • 期刊论文

  • 发表日期：

    2025年5月13日

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  • Shuai Li,
  • Suqin Li,
  • Zekun Zhao,
  • Xuebao Tang,
  • Yongping Xie,
  • Yongkui Li

摘要

High-purity quartz has been widely used because of its unique physical and chemical properties, but the purification of quartz faces challenges such as high costs, technical complexity, and environmental pollution. To address the above issues, this study employed superconducting high-gradient magnetic separation (S-HGMS) technology to efficiently and cost-effectively produce high-purity quartz in an environmentally friendly way. This study integrates theoretical simulations and experimental approaches to investigate the effects of the matrix shape and angle, as well as the angle θ between the radial direction and the magnetic field direction, on the separation process and particle motion trajectories during the S-HGMS process. By employing a specific configuration of magnetic media and optimizing the process parameters, we achieved optimal separation, resulting in the production of a high-quality quartz concentrate. The SiO2 grade improved from 97.305% to 98.91%, while the recovery rate reached 90%. Under precise process parameters, the S-HGMS process can effectively separate weak magnetic substances from high-purity quartz raw ore. This significantly reduces the difficulty of the subsequent fine purification process, ultimately leading to the production of higher-grade high-purity quartz products.