石墨分选中鳞片保护的机制与工艺研究进展

Research Progress on the Mechanism and technology of Protection in Graphite Separation

石墨作为一种重要的战略性非金属矿产资源,广泛应用于国民经济建设及新兴产业中,其中鳞片石墨由于其优异的表面性质及物理化学性质而成为研究焦点。鳞片石墨的应用价值取决于鳞片大小及其品位,因此选矿加工过程中鳞片的尺寸保护和碳含量的提高对其应用具有重要的意义。本文围绕鳞片石墨详细阐述了球磨、搅拌磨、振动磨和高压辊磨等碎磨方式对大鳞片破碎的影响,并在此基础上,总结了近些年鳞片石墨的解离机制及其鳞片尺寸保护机制,提出未来发展方向;同时归纳评述了大鳞片石墨强化回收工艺的研究现状,可为鳞片石墨矿物加工分选提供新的思路和有益的参考。

As an important strategic non−metallic mineral resource,graphite is widely used in national economic construction and emerging industries,among which flake graphite has become the focus of research due to its excellent surface properties and physical and chemical properties.The application value of flake graphite depends on the size and grade of flakes,so the size protection and carbon content improvement of flakes during beneficiation processing are of great significance for its application.This paper elaborates on the effects of crushing methods such as ball milling,stirring milling,vibration milling and high−pressure roller grinding on large flake crushing around flake graphite,and on this basis,summarizes the dissociation mechanism of flake graphite and its scale size protection mechanism in recent years,and puts forward the future development direction.At the same time,the research status of enhanced recovery process of large flake graphite is summarized,which provides new ideas and useful references for the processing and sorting of flake graphite minerals.