Cite this article as:

Min Liu, Guocheng Lv, Xin Liu, Zijie Ren, Meitang Liu, Ritong Huang, Xinyu Hou, Qinwen Zheng, Libing Liao, and Jingwen Mao, Rapid identification method for inclusions in evaluating high-purity quartz, Int. J. Miner. Metall. Mater., (2025). https://doi.org/10.1007/s12613-024-3066-6
Min Liu, Guocheng Lv, Xin Liu, Zijie Ren, Meitang Liu, Ritong Huang, Xinyu Hou, Qinwen Zheng, Libing Liao, and Jingwen Mao, Rapid identification method for inclusions in evaluating high-purity quartz, Int. J. Miner. Metall. Mater., (2025). https://doi.org/10.1007/s12613-024-3066-6
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高纯石英评价中包裹体的快速识别方法

摘要: 随着芯片、光伏等新兴产业的快速发展,我国高纯石英的需求量增长迅速,其中关键4N5以上高纯石英原料对外依存度过高,严重影响了国家相关战略产业的安全发展。因此,中国正在开展新的高纯石英勘探和找矿工作,开发一种快速评价高纯石英的方法以提高勘探效率变得尤为重要。本工作选择了伟晶岩、脉石英、白岗岩三种不同类型的石英矿样,对石英原矿中的包裹体含量进行了统计分析,制定了基于通透率的分级标准。利用提纯工艺对四种石英原矿进行了提纯,采用电感耦合等离子体质谱仪(ICP)分析了提纯后石英精矿的成分,探究了不同石英原矿的包裹体含量与石英精矿成分以及拉晶产品品质的关系。研究发现石英原矿中包裹体含量越多,提纯精矿的杂质含量越多,SiO2纯度越低,拉晶测试中玻璃越不通透,质量越差;石英原矿中包裹体含量越少,提纯精矿的杂质含量越少,SiO2纯度越高,拉晶测试中玻璃越通透,质量越好。

 

Rapid identification method for inclusions in evaluating high-purity quartz

Abstract: The rapid growth of semiconductor, photovoltaic, and other emerging industries has led to a sharp increase in the demand for high-purity quartz in China, particularly 4N5-grade (99.995% pure SiO2). However, heavy reliance on imported high-purity quartz poses a significant risk to the security of key national strategic industries. To address this challenge, China is focusing on identifying domestic sources of high-purity quartz and developing efficient evaluation methods. This study investigates the inclusion content in three types of quartz: pegmatite, vein quartz, and white granite. A grading system based on the transmittance of quartz grains was established by analyzing the number of inclusions. Five quartz ore samples from different regions were purified, and the resulting concentrates were analyzed using inductively coupled plasma mass spectrometry (ICP-MS). The relationships among the inclusion content of raw quartz, composition of purified quartz, and quality of sintered fused quartz products were examined. The findings demonstrate that quartz with fewer inclusions results in lower impurity levels after purification, higher SiO2 purity, and more translucent glass, as confirmed by firing tests. Herein, this study establishes a clear connection between quartz inclusions and the overall quality of high-purity quartz. The proposed approach enables the rapid assessment of quartz deposit quality by identifying inclusions, offering a practical and efficient method for locating high-quality quartz resources.

 

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