关键词: 低温等离子体　, 矿物加工　, 表面改性　, 浮选药剂　, 选矿废水

Abstract: With the increasing proportion of low-grade,finely disseminated,and complex associated mineral resources, conventional flotation processes that mainly rely on reagent regulation are facing challenges such as insufficient selectivity,high reagent consumption,and difficulty in wastewater reuse.As a green pretreatment technology,low-temperature plasma has attrac ted growing attention in mineral processing in recent years because of its high reactivity,low bulk temperature,and flexible con trollability.Existing studies indicate that the effect of low-temperature plasma is not a single process,but rather the result of multiple coupled processes induced by reactive plasma species.These processes can enlarge the differences in interfacial prop erties among minerals.In addition,plasma modification of collectors,depressants,and composite reagents has shown potential for reducing reagent dosage,enhancing adsorption,and improving selectivity,while also exhibiting promising prospects for the degradation of organic reagents in flotation wastewater.Overall,the application of low-temperature plasma in mineral processing is still at the stage of exploration and accumulation.Future studies should further clarify the variation patterns of mineral sur face composition,valence states,and wettability under different discharge conditions,with particular attention to real pulp sys tems,continuous treatment devices,and the evaluation of energy consumption and economic feasibility,thereby providing a more reliable basis for the transition of this technology from laboratory research to industrial application.

Key words: low-temperature plasma,mineral processing,surface modification,flotation reagent,mineral processing wastewater