定量构效关系在多金属硫化矿浮选分离基础研究

We carry out the project according to the low and middling grade multi-metal sulfide mineral in China. Based on the modern knowledge and achievements of flotation reagents, flotation electrochemistry, quantum chemistry, interface chemistry and flotation theory, we can sure the relationship between superficially physical and chemical properties and flotation behavior of the multi-metal sulfide mineral; and its crystal structure, surface electricity, wettability and adsorption are studyed, we use molecular shape analysis (MSA), distance geometry method (DG) and the comparative molecular field analysis (CoMFA) method to build QSAR model, then study and analyze the parameters such as group structure, molecular force and so on; screening suitable quantitative parameters, in order to design and compound new flotation reagents, and revealled the effect mechanism of flotation reagents and mineral by QSAR model and testing means; we research on various electrochemical equilibriums reactions and how it affects on surface electrochemical of sulfide minerals using electrochemical theory, electrode process kinetics, thermodynamics theory, thus forming a new technology of flotation separation in polymetallic sulphide ore, which can solve the effective separation and improve the level of flotation technology for this type of mineral resources and resource comprehensive utilization also, it has important theoretical significance and practical value.

本项目针对我国中低品位多金属硫化矿开展工作。根据浮选药剂学、浮选电化学、量子化学、界面化学及浮选理论等学科的现代知识与成果，确定多金属硫化矿表面物理化学性质与浮选行为的关系；研究铜铅锌硫化矿物晶体结构与表面电性、润湿性及吸附性，利用分子形状分析（MSA）、距离几何方法（DG）和比较分子场分析（CoMFA）方法对选矿中常用的浮选药剂分子建立QSAR模型，对基团结构、分子力等参数进行研究分析比较；根据模型筛选合适的量化参数，设计、合成新型多金属硫化矿选矿浮选药剂，利用QSAR模型及检测手段揭示药剂与矿物作用的机理；利用电化学理论、电极过程动力学、热力学理论等，研究各种电化学平衡反应对硫化矿表面电化学反应的影响，从而形成多金属硫化矿浮选分离新技术，对于解决多金属硫化矿的有效分离，提高该类型矿产资源的浮选技术水平和资源综合利用率，具有重要的理论意义和实际价值。