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Optimization of selective copper extraction from chalcopyrite concentrate in presence of ammonium persulfate and ammonium hydroxideMehmet Deniz TuranDepartment of Metallurgical and Materials Engineering,F?rat University摘 要:The dissolution of copper and iron from chalcopyrite concentrate in the presence of ammonium persulfate(APS) and ammonium hydroxide......
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Investigation on microwave heating for direct leaching of chalcopyrite ores and concentratesKubra Onol,Muhlis Nezihi SaridedeDepartment of Metallurgical and Materials Engineering, Faculty... of microwave heating on the direct leaching of chalcopyrite ores and concentrates were investigated. The results of microwave leaching experiments were compared with those obtained under conventional......
Electrochemical and spectroscopic study of interfacial interactions between chalcopyrite and typical flotation process reagentsGustavo Urbano1,Isabel Lázaro1,Israel Rodríguez1,Roxana Larios3,Roel... a greater hydrophobicity of chalcopyrite are primarily CuX and S0,whereas oxides and hydroxides of Cu and Fe as well as an excess of starch decrease the hydrophobicity.A conditioning of the mineral......
Dissolution characteristics of sericite in chalcopyrite bioleaching and its effect on copper extractionYing-bo Dong,Hao Li,Hai Lin,Yuan ZhangSchool of Energy and Environmental Engineering,University... extraction in a chalcopyrite bioleaching system were examined. Finer particles,appropriate temperature and rotation speed for Acidithiobacillus ferrooxidans resulted in a higher Al3+ dissolution......
that the optimum initial pH value and its growth temperature are 1.68 and 40 ℃, respectively. The culture of it is used to leach a complex concentrate chalcopyrite, the leaching efficiencies of copper and iron are 1.93 % and 13.74 %, respectively, and it is more effective than the A.ferrooxidans culture in the leaching of the complex concentrate chalcopyrite. Key words: Leptospirillum ferriphilum; isolation......
Trans. Nonferrous Met. Soc. China 23(2013) 231-236 Interaction mechanism of Cu2+, Fe3+ ions and extracellular polymeric substances during bioleaching chalcopyrite by Acidithiobacillus ferrooxidans... 23270, and iron and copper enclosed in EPS were extracted by ultrasonication and centrifugation methods to determine the interaction mechanism of Cu2+, Fe3+ and EPS during bioleaching chalcopyrite......
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Trans. Nonferrous Met. Soc. China 30(2020) 1928-1942 Oxidation of chalcopyrite in air-equilibrated acidic solution: Inhibition with phenacyl derivatives Paul CHIRITA1, MAdAlina I. DUINEA1,2, Laura G...-(5-bromo-2-hydroxy-3-methylphenyl)-1-oxoethan-2-yl-O- ethyl xanthate (Pr06) on the aqueous oxidation of chalcopyrite (CuFeS2) in air-equilibrated solution at a temperature of 25 °C and a pH of 2.5 were studied. The effects......
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