云南冶金2026，Vol.55Issue(4)：59-65,7.
碳酸二甲酯在黄铜矿无捕收剂浮选体系中的行为研究
Study on the Behavior of Dimethyl Carbonate in Collector-free Flotation System of Chalcopyrite
摘要
Abstract
Carbon neutrality has attracted extensive attention from all sectors of society.In the narrow sense,carbon neutrality mainly targets carbon dioxide.Nevertheless,there are relatively few studies concerning the application of carbon dioxide and its chemical products obtained via capture and conversion in the flotation of non-ferrous metal ores.Flotation tests,contact angle measurements,infrared spectroscopy and surface tension tests were adopted to systematically investigate the interaction mechanism between chalcopyrite and dimethyl carbonate(DMC),a chemical product converted from carbon dioxide,in the collector-free flotation system.The results indicate that:After DMC was added into the collector-free flotation system of chalcopyrite,the chalcopyrite recovery was only about 30％,indicating poor floatability.After acidified DMC was added to the flotation system,the floatability of chalcopyrite was greatly improved,and the recovery rate reached 73％.Acidified DMC increased the contact angle on the chalcopyrite surface from 80.893° to 90.438°,reduced the surface tension of the liquid phase in the flotation system,and underwent chemical adsorption on the chalcopyrite surface.This study demonstrates that DMC,a chemical product converted from captured carbon dioxide,can be used as a flotation reagent for chalcopyrite.It provides technical references for the coordinated development of non-ferrous ore flotation and carbon neutrality.关键词
浮选/黄铜矿/碳酸二甲酯/无捕收剂/碳中和Key words
flotation/chalcopyrite/dimethyl carbonate/collector-free/carbon neutrality分类
矿业与冶金引用本文复制引用
龚秀丽,钟世美,张红星,任骏,李博,邵延海..碳酸二甲酯在黄铜矿无捕收剂浮选体系中的行为研究[J].云南冶金,2026,55(4):59-65,7.基金项目
云南省重大科技专项计划(202502AB080013) （202502AB080013）
