橄辉岩型钛铁矿物浮选分离基础研究

项目名称： 橄辉岩型钛铁矿物浮选分离基础研究

项目编号： No.51504224

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 矿业工程

项目作者： 杨耀辉

作者单位： 中国地质科学院矿产综合利用研究所

项目金额： 21万元

中文摘要： 本研究针对橄辉岩型钛铁矿矿物晶体结构复杂、表面性质相似、与浮选药剂作用选择性差的特点，拟以钛铁矿、橄榄石、钛辉石矿物为研究对象，根据价键理论、晶体场理论、量子化学和浮选理论等基础理论知识，研究矿物晶体结构、表面特性与浮选行为的关系；根据分子轨道理论，协同组合化学、浮选药剂分子设计理论，进行浮选剂极性基及烃链结构设计，组装设计出新型高效环保浮选药剂；根据配位化学、浮选溶液化学、矿物-溶液-平衡理论和浮选理论，通过红外光谱、XPS、动电位测试、反相高效液相色谱法以及分子动力学模拟等手段，研究矿物溶解平衡、浮选剂的溶液化学、复杂界面相互作用和机理以及组合用药规律，形成橄辉岩型钛铁矿物浮选体系界面调控机制，为橄辉岩型钛铁矿的高效浮选分离提供理论基础；再结合浮选实践，最终形成橄辉岩型钛铁矿资源的界面化学调控—选择性分离的理论体系。

中文关键词： 钛铁矿；橄榄石；浮选分离；界面调控

英文摘要： In view of olivine-pyroxenite ilmenite minerals having complex crystal structures, similar surface properties and poor selectivity with flotation reagents，ilmenite, olivine and titanaugite in olivine-pyroxenite ilmenite minerals flotation system are taken as the object of study. Firstly, the correlation between mineral flotation behavior and crystal strcucture as well as surface properties is investigated based on theories of valence bond theory, crystal field theory, quantum chemistry and flotation theory. Secondly, design the polar residues and hydrocarbon chain structure of flotation agent, and assembly design new highly efficient environment-friendly flotation agent by using the molecular orbital theory, combinatorial chemistry and flotation reagents molecular design theory. Meanwhile, dissolution equilibrium of mineral surface, flotation solution chemistry behavior of reagents, complex interface reactions and mechanism between mineral and reagents and combination regularity of using new reagents are studied by adopting the surface analysis methods such as infrared spectroscopic (FTIR), X-ray photoelectron spectroscopy (XPS), zeta potential measurements, reversed phase high-performance liquid chromatography(RP-HPLC) and Molecular dynamics (MD) simulations based on coordination chemistry, flotation solution chemistry, mineral-solution-balance theory and flotation theory, which leads to interface regulation mechanism of olivine-pyroxenite ilmenite minerals flotation system. All of above is to provide the theoretical foundation of olivine-pyroxenite ilmenite from other ones. Finally, form the theoretical system of interface chemical regulation-selective flotation separation of olivine-pyroxenite ilmenite resources by combining with ore flotation practice.

英文关键词： ilmenite;olivine;flotation separation;interface regulation