Dissolution of fine particle chalcopyrite concentrate in acidic potassium dichromate solution

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dc.contributor.authorUcar G.
dc.contributor.authorBoyrazli M.
dc.contributor.authorAydogan S.
dc.date.accessioned2020-03-26T17:19:10Z
dc.date.available2020-03-26T17:19:10Z
dc.date.issued2007
dc.departmentSelçuk Üniversitesien_US
dc.description7th International Scientific Conference on Modern Management of Mine Producing, Geology and Environmental Protection, SGEM 2007 -- 11 June 2007 through 15 June 2007 -- Albena -- 101475en_US
dc.description.abstractThis paper presents a study for leaching kinetics of chalcopyrite concentrate in acidic potassium dichromate solution. For this purpose effects of stirring speed in the range of 100-400 rpm, sulphuric acid (H2SO4) concentration in the range of 0.1-0.5 M, potassium dichromate (K2Cr2O7) concentration in the range of 0.02-0.1 M, leaching temperature in the range of 20-90°C, particle size fractions of 212×106, 106×75, 74×45, 45×38 and minus 38 ?m and solid/liquid ratio in the range of 10-200 g/L on copper dissolution were investigated. The rate of chalcopyrite oxidation by potassium dichromate in sulphuric acid was directly proportional to stirring speed, sulphuric acid and potassium dichromate concentrations and leaching temperature. On the other hand, it increased with decreasing particle size and solid/liquid ratio. The kinetic study showed that the dissolution of copper from the concentrate is well represented by a shrinking core model controlled by diffusion through a porous layer, 1-2/3X-(1-X)2/3. The activation energy obtained was 22.44 kJ/mol for the temperature range 20-90 °C.en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.urihttps://hdl.handle.net/20.500.12395/21819
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.relation.ispartof7th International Scientific Conference on Modern Management of Mine Producing, Geology and Environmental Protection, SGEM 2007en_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectChalcopyriteen_US
dc.subjectPotassium dichromateen_US
dc.subjectShrinking core modelen_US
dc.subjectSulphuric aciden_US
dc.titleDissolution of fine particle chalcopyrite concentrate in acidic potassium dichromate solutionen_US
dc.typeConference Objecten_US

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