摘要
综述了配位化学在金属氧化矿浮选过程中的最新应用研究进展,重点探讨了配位化学理论在金属氧化矿浮选界面作用机理中的应用。浮选是通过捕收剂/抑制剂等药剂分子强化不同矿物表面的亲/疏水性差异,借助气泡实现疏水矿物和亲水矿物选择性分离的界面物理化学过程。浮选体系中矿物晶体表面、浮选药剂及水分子均具有显著的配位特征,配体药剂分子与表面活性金属离子在空间结构和化学性质上的匹配,是现代配位化学中高精度“分子识别”的关键原则。同时,现代配位化学还包括配体(客体)与主体之间的氢键作用、静电作用及范德华作用等非传统的超分子作用(非共价键作用)。因此,本文提出界面配位作用是金属氧化矿物浮选界面过程的本质规律之一。界面配位作用是发生在原子、分子层次的微界面物理化学过程,界面配位化学精细调控研究对于实现复杂低品位金属氧化矿物的深度强化分选至关重要。本文从矿物表面金属离子的配位、表面水化配位,金属离子在水化表面预配位及浮选药剂预组装配位对典型金属氧化矿物的浮选配位化学研究进行归纳总结,并对未来浮选配位化学的研究重点进行了前景展望。
This paper reviews the latest application and research advancements of coordination chemistry in the flotation process of metal oxide ores,with a primary emphasis on the application of coordination chemistry theory in the interface action mechanism of metal oxide flotation.Flotation is a physicochemical interface process that selectively separates hydrophobic minerals from hydrophilic ones through the enhancement of the hydrophobicity/hydrophilicity difference on different mineral surfaces by flotation reagent molecules such as collectors and inhibitors,with the aid of bubbles.In the flotation system,the mineral crystal surface,flotation reagents,and water molecules all exhibit significant coordination characteristics.The matching of ligand reagent molecules with surface-active metal ions in terms of spatial structure and chemical properties constitutes a key principle of high-precision“molecular recognition”in modern coordination chemistry.Simultaneously,modern coordination chemistry also encompasses non-traditional supramolecular interactions(non-covalent bond interactions),such as hydrogen bonding,electrostatic interactions,and van der Waals interactions,between ligands(guests)and hosts.Therefore,this paper proposes that interface coordination action is one of the essential laws of the metal oxide flotation interface process.Interface coordination action is a microinterface physicochemical process at the atomic and molecular levels.The fine-tuning research of interface coordination chemistry is of crucial significance for achieving the deep and intensified separation of complex low-grade metal oxide ores.This paper summarizes the research on the coordination chemistry of flotation of typical metal oxide ores from the aspects of the coordination of metal ions on the mineral surface,surface hydration coordination,pre-coordination of metal ions on the hydrated surface,and pre-assembly coordination of flotation reagents,and provides a perspective outlook on the research priorities of future flotation coordinat
作者
张晨阳
姚钰昀
孙伟
陈建华
朱阳戈
ZHANG Chenyang;YAO Yuyun;SUN Wei;CHEN Jiahua;ZHU Yangge(School of Minerals Processing and Bioengineering&Engineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization,Central South University,Changsha 410083,China;School of Mining Engineering and Geology&Key Laboratory of Green Mining of Coal Resources in Xinjiang(XJIE),Ministry of Education,Xinjiang Institute of Engineering,Urumqi 830023,China;School of Resources,Environment and Materials,Guangxi University,Nanning 530004,China;BGRIMM Technology Group,Beijing 100160,China)
出处
《有色金属（选矿部分）》
CAS
2024年第9期134-142,共9页
Nonferrous Metals（Mineral Processing Section）
基金
国家自然科学基金面上项目(52074356)
国家自然科学基金联合基金项目(U20A20269)
国家重点研发计划(2022YFC2904503)
煤炭资源与安全开采国家重点实验室-新疆工程学院联合开放研究基金项目(SKLCRSM-XJIE23KF005)
湖南省科技创新计划(No.2022RC1183)
长沙市科技计划(长沙市杰出创新青年培养计划)。
关键词
配位化学
矿物浮选
金属氧化矿
浮选机理
界面作用
coordination chemistry
minerals flotation
metal oxide ore
flotation mechanism
interface action
