Dissolution kinetics of malachite in ammonia/ammonium carbonate leaching

Basit Öğe Kaydı
dc.contributor.authorBingol, D
dc.contributor.authorCanbazoglu, M
dc.contributor.authorAydogan, S
dc.date.accessioned2020-03-26T16:56:51Z
dc.date.available2020-03-26T16:56:51Z
dc.date.issued2005
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThe leaching of oxide copper ore containing malachite, which is the unique copper mineral in the ore, by aqueous ammonia solution has been studied. The effect of leaching time, ammonium hydroxide, and ammonium carbonate concentration, pH, [NH3]/[NH4+] ratio, stirring speed, solid/liquid ratio, particle size, and temperature were investigated. The main important parameters in ammonia leaching of malachite ore are determined as leaching time, ammonia/ammonium concentration ratio, pH, solid/liquid ratio, leaching temperature, and particle size. Optimum leaching conditions from malachite ore by ammonia/ammonium carbonate solution are found as ammonia/ammonium carbonate concentrations: 5 M NH4OH+0.3 M (NH4)(2)CO3; solid/liquid ratio: 1:10 g/mL; leaching times: 120 min; stirring speed: 300 rpm; leaching temperature: 25 degreesC; particle size finer than 450 mum. More than 98% of copper was effectively recovered. During the leaching, copper dissolves as in the form of Cu(NH3)(4)(+2) Complex ion, whereas gangue minerals do not react with ammonia. It was determined that interface transfer and diffusion across the product layer control the leaching process. The activation energy for dissolution was found to be 15 kJ mol(-1). (C) 2004 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.hydromet.2004.09.006en_US
dc.identifier.endpage62en_US
dc.identifier.issn0304-386Xen_US
dc.identifier.issn1879-1158en_US
dc.identifier.issue01.02.2020en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage55en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.hydromet.2004.09.006
dc.identifier.urihttps://hdl.handle.net/20.500.12395/19666
dc.identifier.volume76en_US
dc.identifier.wosWOS:000226874600006en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherELSEVIER SCIENCE BVen_US
dc.relation.ispartofHYDROMETALLURGYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectcopperen_US
dc.subjectmalachiteen_US
dc.subjectammoniaen_US
dc.subjectammonium carbonateen_US
dc.subjectleachingen_US
dc.subjectdiffusionen_US
dc.titleDissolution kinetics of malachite in ammonia/ammonium carbonate leachingen_US
dc.typeArticleen_US

Dosyalar

Orijinal paket
Listeleniyor 1 - 1 / 1
Küçük Resim
İsim:
makale282.pdf
Boyut:
419.48 KB
Biçim:
Adobe Portable Document Format
Açıklama:
İndir

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu