Extraction and purification of a high purity quartz in the Altay orogenic belt and its potential evaluation

IF 4.9 2区工程技术 Q1 ENGINEERING, CHEMICAL

Minerals Engineering Pub Date : 2025-04-26 DOI:10.1016/j.mineng.2025.109347

Yameng Ma , Jianguo Li , Zhichao Wu , Xiumin Tan , Haiqi Zhang , Xiufeng Zhang , Yuejun Yi

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引用次数: 0

Abstract

High-purity quartz (HPQ) serves as a critical raw material for strategic high-tech industries. This study focused on the leaching purification of HPQ derived from Xinjiang pegmatitic quartz concentrates. Four leaching reagents (RL, RH, OL, and OH) were systematically evaluated to optimize process parameters including liquid-to-solid ratio (L/S), leaching temperature, and reaction time. Orthogonal experimental design with three factors (L/S ratio, temperature, time) and three levels was employed to determine optimal conditions. The results indicated that OL reagent with an L/S ratio of 2.9:1 at 56.6 °C for 6.8 h achieved the best performance: total impurity content reduced to 16.98 μg/g, impurity removal efficiency reached 92.65 %, and product yield remained at 93 %. The final product met the impurity specifications of SJ/T 11386-2009 (China) for photovoltaic crucible applications, demonstrating its potential as a domestic alternative to imported HPQ. This study provides a novel reagent system and optimized process for HPQ production from pegmatitic sources. Future work should focus on scale-up verification and environmental impact assessment of the proposed process.

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阿勒泰造山带一种高纯石英的提取纯化及其潜力评价

高纯度石英（HPQ）是战略性高技术产业的重要原料。对新疆伟晶质石英精矿HPQ的浸出提纯进行了研究。对四种浸出剂（RL、RH、OL和OH）进行了系统评价，以优化液固比（L/S）、浸出温度和反应时间等工艺参数。采用三因素（L/S比、温度、时间）三个水平的正交试验设计确定最佳工艺条件。结果表明，以L/S比为2.9:1的OL试剂，在56.6℃、6.8 h条件下获得了最佳性能，总杂质含量降至16.98 μg/g，杂质去除率达到92.65%，产物收率保持在93%。最终产品符合SJ/T 11386-2009（中国）光伏坩埚应用杂质规范，显示了其作为进口HPQ替代品的国内潜力。本研究为伟晶岩源制备高效液相色谱提供了一种新的试剂体系和优化工艺。今后的工作应侧重于拟议过程的扩大核查和环境影响评估。

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来源期刊

Minerals Engineering 工程技术-工程：化工

CiteScore

8.70

自引率

18.80%

发文量

519

审稿时长

81 days

期刊介绍： The purpose of the journal is to provide for the rapid publication of topical papers featuring the latest developments in the allied fields of mineral processing and extractive metallurgy. Its wide ranging coverage of research and practical (operating) topics includes physical separation methods, such as comminution, flotation concentration and dewatering, chemical methods such as bio-, hydro-, and electro-metallurgy, analytical techniques, process control, simulation and instrumentation, and mineralogical aspects of processing. Environmental issues, particularly those pertaining to sustainable development, will also be strongly covered.