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Journal of Applied Electrochemistry
publication venue for: A rotating ring-disk study of the initial stages of the anodic dissolution of chalcopyrite in acidic solutions
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type: Document
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A rotating ring-disk study of the initial stages of the anodic dissolution of chalcopyrite in acidic solutions
most specific type: Article
volume: 36
related by: authorship 9861
type: Article
freetext keyword: Chalcopyrite; Ferric leaching; Non-oxidative dissolution; Ring-disk; Soluble sulfur Acidity; Copper; Electrochemistry; Electrodes; Oxidation; Sulfuric acid; Chalcopyrite; Ferric leaching; Non-oxidative dissolution; Ring-disk; Soluble sulfur; Nitrogen compounds
has publication venue: Journal of Applied Electrochemistry
type: Continuant
page end: 431
type: Entity
estado: published
type: Document
issue: 4
most specific type: Document
origen: scopus
related by: authorship 9860
e iscopus: 2-s2.0-32044458414
page start: 425
abstract: The initial stages of the dissolution of chalcopyrite have been studied using rotating ring-disk electrode techniques in dilute sulfuric acid solutions at 60 °C. It has been confirmed that the mineral undergoes a dissolution process under freely dissolving conditions in the absence of an oxidant. This process involves the formation of soluble copper(II) ions and a soluble sulfur species which is presumably H2S. By the use of an anodic stripping technique on the ring electrode, it has been possible to determine that the dissolution of chalcopyrite under oxidative conditions involves a soluble sulfur species such as thiosulfate. Collection efficiency measurements involving the detection of both iron(II) and copper(II) on the ring have been used to identify possible anodic reactions in the potential region relevant to the oxidative leaching of the mineral. © Springer 2005.
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crisid: 1646
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type: Information Content Entity
date time value: article date 1646
doi: 10.1007/s10800-005-9089-4

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