层状铝硅酸盐矿物表面活性位点对组合捕收剂界面组装的影响机制

层状铝硅酸盐矿物是重要的功能材料和锂、钒、铷等贵重金属的提取原料，其经济高效地富集和分离日趋重要。本项目以云母、高岭石、伊利石及常见脉石矿物石英为研究对象，采用分子动力学模拟与实验相结合的方法，研究阳离子捕收剂分别与非离子、阴离子捕收剂复配体系下，层状铝硅酸盐矿物表面活性位点对组合捕收剂界面组装的影响机制。探索复配体系下铝硅酸盐矿物的浮选行为，建立组合用药的最佳配伍方法；分析组合捕收剂在矿物/水界面的微观结构和动力学轨迹，在分子尺度上揭示捕收剂在矿物界面自组装的动态过程及矿物晶体结构各向异性、表面金属离子、断裂键等对组装聚集体结构和浮选性能的影响机制，为铝硅酸盐矿物浮选组合新药剂及新技术的开发提供理论支撑和技术基础。

Aluminosilicates are important functional materials and a great source of precious metals such as lithium, vanadium and rubidium. Therefore，their cost-effective enrichment and separation is increasingly important. This project will focus on muscovite, kaolinite, illite and the main gange mineral quartz, and discuss the influence mechanisms of surface active sites of phyllosilicate minerals on the interfacial assembly of mixed collectors using molecular dynamics simulation and experiments methods. Flotation behavior of mixed collectors will be investigated in detail to confirm their best compatible way. Besides researches on the microstructure and dynamic trajectory of mixed collectors at silicate minerals/water interface will be conducted to make sure the dynamic process of collectors on silicate surfaces at the molecular scale, and the effect of anisotropic of crystal structure, metal ions and broken bonds on their assembly aggregate structure and flotation behavior. These studies may provide theoretical bases and technical supports for developing new flotation reagents and technology on aluminosilicates.