钨是重要的战略金属，非传统难选钨矿物资源是其重要来源。而该类型矿物资源组成复杂、嵌布粒度细、泥化严重、目前难以经济利用，基础研究薄弱。本项目以非传统难选钨矿的主要组成矿物（白钨矿、黑钨矿、萤石、方解石）为对象，研究矿物晶体结构与矿物结晶、解理性质及常见暴露面润湿性、表面自由能等晶体及表面物理化学性质的关系；研究常见暴露面结构性质差异对浮选剂/矿物选择性作用的影响，并对浮选剂进行筛选优化，建立钨矿高效浮选剂结构-性能的定量判据；研究细颗粒界面极性相互作用力、矿浆溶液物理化学条件变化对细粒钨矿选择性聚集与分散行为的影响，建立微细粒钨矿选择性聚集与分散强化浮选的界面物理化学调控机制。系统研究成果形成非传统难选钨矿浮选分离的晶体及界面物理化学理论。本研究对于促进钨矿高效浮选剂的筛选及优化设计，更普遍地指导非传统难选钨矿的浮选回收实践，提高该类型矿物资源的综合利用率，具有重要的理论意义和实际价值。

Tungsten rare metal is an important strategic metal, and unconventional refractory mineral resources are its main sources. However, this type of mineral resources is unrecoverable with the current technology, due to its complex mineral composition and extremely fine dissemination size. At present, rare fundamental research about its utilization has been reported. In this work, taking unconventional refractory tungsten ores (mainly containing scheelite, wolframite, fluorite, calcite) as research objects, the following research contents will be included. The relationship between mineral crystal structure and its surface physico-chemical properties, such as its growth habit, cleavage nature, wettability, surface free energy, will be investigated and built. The effect of the differences in mineral crystal structures on the selective interaction between flotation reagents and commonly exposed mineral surfaces will be systematically investigated, and accordingly the more effective and selective flotation reagents will be selected and/or designed. The impact of interfacial polar interaction between mineral surfaces, and changes in pulp phycico-chemical conditions on the aggregation or dispersion behaviors of fine mineral particles will be studied, and hereby the controlling mechanism and method based on interfacial physico-chemistry aiming at the selective aggregation or dispersion of fine mineral particles will be developed. All the above research results will lead to the formation of a new theory on the flotation separation of unconventional refractory tungsten ores based on crystal and interfacial physico-chemistry. The research results in this project will be meaningful to select and/or design more effective and selective flotation reagents for tungsten minerals flotation, to effectively guide the flotation separation practice of unconventional refractory tungsten minerals, and to promote the utilization ratio of this type of mineral resources.