关键词: 煤系物, 锂镓, 赋存状态, 物理分选, 化学活化, 提取分离

Abstract: There are abundant strategic metal minerals such as lithium and gallium in coal-related resources. The extraction and utilization of these minerals can not only promote resource reuse but also increase China′s strategic metal reserves. Clarifying the occurrence state of lithium and gallium of strategic metals in coal-related resources is the key of enrichment and seperation of lithium and gallium,the detection of lithium and gallium content and the study of occurrence forms are described firstly. The technical principles and applicability of physical separation,chemical separation and chemical precipitation,solvent extraction,ion exchange adsorption and membrane separation were analyzed in detail. According to the research status of the enrichment and separation of lithium and gallium in coal-related resources,the future development direction is proposed,including exploring the combination form and metallogenic mechanism of target elements and harmful elements,improving the activation adaptability and selectivity of lithium and gallium in coal-related resources,breaking the technical bottleneck of metal separation and optimizing the production process,achieving the acid and base solution be recycled. The research results could provide useful reference for the resource utilization of other coal-related resources and the extraction and utilization of strategic metals.

Key words: coal-related resources,lithium and gallium,occurrence state,physical sorting,chemical activation,extraction and separation