非洲硫化铜钴矿氧压浸出工艺研究

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关键词：硫化铜钴矿；预浸脱碳；氧压浸出；铜钴浸出

中图分类号：TF81 文献标识码：A 文章编号：1008-9500（2025）07-0028-08

DOI：10.3969/j.issn.1008-9500.2025.07.08

Study on Oxygen Pressure Leaching Process of African Copper-Cobalt Sulfide Ore

SULifeng，ZHENG Chaozhen，LIU Sanping，QIN Shuchen （BGRIMM Technology Group，Beijing ， China）

Abstract：As important strategic metal resources，copperand cobalt are widelyused in industrial fieldssuchas new energy.Africancopper-cobalt sulfideresourcesare graduallybeingdeveloped，buttraditional smelting methodshave problems suchas low eficiencyandhigh ironleachingrate.Foracertain copper-cobalt sulfide concentrate in Africa， theinfluencing factorsanddegreeofmetal leaching behaviorareanalyzedbyusing parameters suchaspre-leachingacid amount，oxygenpartial pressure，leaching time，leaching temperature，andliquid-solidratioasexperimentalconditions，and theoptimization scheme of oxygen pressure leaching processis studied to improve the leaching rate ofcopper and cobalt and suppresstheleachingof iron.Aftersystematic investigation，under theoptimal processconditions，thepre-leaching acid amount is 150kg/t ore，the oxygen partial pressure is O.6 MPa，the leaching time is 4h，the leaching temperature is 180‰ ，and the liquid-solid ratio is 5：1. At this point，the leaching rates of copper and cobalt reach 98.23% and 98.50% ， respectively，while the leaching rate of iron is only 3.42% .In the leaching residue，the content of copper and cobalt is extremelylow，andironis mainlyenrichedintheformofferricoxide，andtheacidityoftheleaching solutionis moderate， which facilitates the subsequent separationand recoveryof copperand cobalt.Research hasshown that oxygen pressure leaching technologycaneficientlyprocess copper-cobaltsulfideore，withadvantagessuchashigh metal extractionrate， significantironihibitionefect，and good processtability，providing technicalreferencefortheeficientdevelopmentof similar resources.

Keywords：copper-cobaltsulfideore;pre-leaching decarbonization;oxygen pressure leaching;copper-cobaltleaching

铜是人类应用最广泛的金属之一，钴更是我国战略性矿产资源，两者在航空航天、机械制造、电子电气、新能源电池等工业领域取得广泛应用。（剩余4781字）