000118287 001__ 118287
000118287 005__ 20240319081021.0
000118287 0247_ $$2doi$$a10.1016/j.mineng.2022.107594
000118287 0248_ $$2sideral$$a129623
000118287 037__ $$aART-2022-129623
000118287 041__ $$aeng
000118287 100__ $$aMéndez, A.
000118287 245__ $$aBiomass-derived activated carbon as catalyst in the leaching of metals from a copper sulfide concentrate
000118287 260__ $$c2022
000118287 5060_ $$aAccess copy available to the general public$$fUnrestricted
000118287 5203_ $$aChalcopyrite is the resource with the highest amount of Cu content representing around 70–80% of the known reserves in the world. However, chalcopyrite like other copper sulfides, is usually found in deposits with grades around 0.4–0.5% copper. The exploitation of these reserves using traditional flotation methods followed by pyrometallurgical treatment of copper concentrate is at the limit of economic viability. Hydrometallurgical route would be more suitable for treating of these low-graded sulfide ores. However, chalcopyrite is refractory in ferric/sulfuric acid media and shows slow dissolution rates. For this a number of researches were carried out to accelerate the kinetics of leaching by adding pyrite, iron powder, nanosized silica, coal and activated carbon. The main objective of the present work was to study the use of one biomass-derived activated carbon as catalysts in the leaching of copper from chalcopyrite. Sulfuric acid solution of pH 1 with 5 g L-1 of Fe3+ was used as leaching agent. Experiments were performed at 90 °C and 250 rpm, during 48 and 96 h. Concentration of Cu, Zn, As, Sb and Co in the liquid phase was determined in order to evaluate their extraction degree, whereas solid residues were characterized by SEM-EDS and XRD. The presence of biomass-derived activated carbon significantly increased the extraction of copper, decreasing the leaching of arsenic. Furthermore, the use of biomass-derived activated carbon led to lower amounts of crystalline sulfur in the final residue.
000118287 536__ $$9info:eu-repo/grantAgreement/ES/AEI/RTI2018-096695-B-C31
000118287 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000118287 590__ $$a4.8$$b2022
000118287 592__ $$a1.018$$b2022
000118287 591__ $$aENGINEERING, CHEMICAL$$b35 / 141 = 0.248$$c2022$$dQ1$$eT1
000118287 593__ $$aChemistry (miscellaneous)$$c2022$$dQ1
000118287 591__ $$aMINING & MINERAL PROCESSING$$b4 / 20 = 0.2$$c2022$$dQ1$$eT1
000118287 593__ $$aMechanical Engineering$$c2022$$dQ1
000118287 591__ $$aMINERALOGY$$b3 / 29 = 0.103$$c2022$$dQ1$$eT1
000118287 593__ $$aGeotechnical Engineering and Engineering Geology$$c2022$$dQ1
000118287 593__ $$aControl and Systems Engineering$$c2022$$dQ1
000118287 594__ $$a8.5$$b2022
000118287 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000118287 700__ $$aÁlvarez, M. L.
000118287 700__ $$aFidalgo, J. M.
000118287 700__ $$0(orcid)0000-0001-5266-398X$$aDi Stasi, C.
000118287 700__ $$0(orcid)0000-0002-0118-3254$$aManyà, J. J.$$uUniversidad de Zaragoza
000118287 700__ $$aGascó, G.
000118287 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000118287 773__ $$g183 (2022), 107594 [9 pp.]$$pMiner. eng.$$tMinerals Engineering$$x0892-6875
000118287 8564_ $$s7381089$$uhttps://zaguan.unizar.es/record/118287/files/texto_completo.pdf$$yVersión publicada
000118287 8564_ $$s2597347$$uhttps://zaguan.unizar.es/record/118287/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000118287 909CO $$ooai:zaguan.unizar.es:118287$$particulos$$pdriver
000118287 951__ $$a2024-03-18-16:15:26
000118287 980__ $$aARTICLE