无氟无硝法剔除替代水晶的国产硅矿石金属杂质制备高档全透明石英材料加工过程与工艺机理研究

本项目首次提出无氟无硝法剔除替代水晶的国产硅矿石金属杂质制备高档全透明石英材料的化工产品精制与工艺机理研究，以解决原工艺氟硝对人体和环境伤害、工艺复杂、废液难除、 资源配置不当等问题。采用反应动力学、矿物学和物理化学等理论，以安哥拉矿石为参照，优选出与之相似组分的国产硅矿石，通过高温水淬、研磨、在对H2O、CH4、C2H6与Na+、K+ 、Cu2+水合物进行原位比较监测基础上，采用高频电磁波作用后，改用CH3COOH、H2SO4浸泡精制剔除Al、Fe、Ti等金属杂质后过筛、干燥成后续制备超纯石英砂，以实现无氟无硝条件下剔除替代水晶的硅矿石中Al、Fe、Ca、Ti、Na、Cu等金属杂质以实现制备SiO2（4N）以上的高档全透明石英材料的目的，使产品实现全面质量升级、保护环境、降低成本、节能降耗、简化工艺流程、合理配置资源、节约外汇、且能让后续相关产业良性循环，具有良好的经济和社会效益。

This project is the first to propose a chemical-free product refining and process mechanism for the preparation of high-grade fully transparent quartz materials without the use of fluorine-free and non-nitrogen-based methods to eliminate the use of domestic silicon ore metal impurities in order to solve the problem of the original process of fluoride and nitric acid, human body and environmental damage, complex process, waste liquid Difficulties in removing resources and improper resource allocation. Using the theory of reaction kinetics, mineralogy and physical chemistry, the Angolan ore is used as a reference, and the domestic silicon ore with similar components is preferred. After high-temperature water quenching, grinding, and in-situ comparative monitoring of H2O, CH4, C2H6 and Na+, K+, Cu2+ hydrates, after high-frequency electromagnetic wave action, use CH3COOH, H2SO4 soaking and refining to remove Al, Fe, Ti After the metal impurities are sifted and dried to prepare the ultra-pure quartz sand. To achieve the purpose of preparing high-grade fully transparent quartz materials of SiO2 (4N) or higher by eliminating metal impurities such as Al, Fe, Ca, Ti, Na, Cu, etc. in the silicon ore replacing the crystal under the condition of no fluorine and no nitrate, so as to achieve the overall quality of the product. Upgrade, protect the environment, reduce costs, save energy and reduce consumption, simplify process flow, rationally allocate resources, save foreign exchange, and enable a virtuous cycle of subsequent related industries, with good economic and social benefits.