The high-purity quartz industry in China faces a critical challenge due to the scarcity of mineral deposits capable of producing high-purity quartz, leading to a significant gap between production capacity and demand. This study addresses this issue by conducting mineralogical investigations on five typical silica raw materials: vein quartz, powdery quartz, quartzite, granite porphyry, and porphyritic granite. The research focuses on analyzing impurity mineral distribution in quartz, assessing purification potential based on mineral genetic characteristics, and studying impurity element variations during the heating leaching process to develop new methods for deep purification.
Comparing purification results, the order of potential from high to low is powdery quartz > porphyritic granite > granite porphyry > quartzite > vein quartz. The study suggests that higher weathering degrees correlate with easier processing and preparation of high-purity quartz sand.
Our research provides valuable insights into the mineralogical characteristics and purification potential of different silica raw materials, offering a basis for improving the domestic production of high-purity quartz and addressing the industry's current challenges.
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