Preg-robbing of gold in chloride-bromide solution

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorAhtiainen, Riina
dc.contributor.authorLundström, Mari
dc.contributor.departmentOutotec Oyj
dc.contributor.departmentDepartment of Materials Science and Engineering
dc.contributor.departmentDepartment of Chemical and Metallurgical Engineeringen
dc.date.accessioned2018-05-22T14:39:39Z
dc.date.available2018-05-22T14:39:39Z
dc.date.issued2016
dc.description.abstractOne of the major issue in gold chloride leaching is a tendency of gold to either precipitate or adsorb on a carbonaceous matter in an ore, i.e. preg-robbing. This paper discusses issues related to a preg-robbing phenomenon in gold hydrometallurgy, specifically in gold chloride-bromide leaching. This phenomenon has been observed in the 1800s to decrease gold recovery during gold chlorination as well as the state-of-art of gold cyanidation processes. The experiments were conducted in order to study the preg-robbing phenomenon in chloride-bromide media. The tendency of preg-robbing was demonstrated by adding carbon in a non-preg-robbing ore. It was shown that the preg-robbing tendency in the chloride-bromide media was very strong. Addition of 0.01% w/w of carbon powder into the non-preg-robbing ore decreased gold recovery from 92 to 70% and addition 5% w/w of carbon decreased gold recovery to almost zero.en
dc.description.versionPeer revieweden
dc.format.extent8
dc.format.extent244-251
dc.format.mimetypeapplication/pdf
dc.identifier.citationAhtiainen , R & Lundström , M 2016 , ' Preg-robbing of gold in chloride-bromide solution ' , Physicochemical Problems of Mineral Processing , vol. 52 , no. 1 , pp. 244-251 . https://doi.org/10.5277/ppmp160121en
dc.identifier.doi10.5277/ppmp160121
dc.identifier.issn1643-1049
dc.identifier.issn2084-4735
dc.identifier.otherPURE UUID: 71c0f93e-63f5-402b-861c-c3ece5020be0
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/71c0f93e-63f5-402b-861c-c3ece5020be0
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=84953243030&partnerID=8YFLogxK
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/20598117/CHEM_Ahtiainen_Lundstr_m_Preg_robbing_2016_Physicochemical_Problems_of_Mineral_Processing.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/30983
dc.identifier.urnURN:NBN:fi:aalto-201805222423
dc.language.isoenen
dc.relation.ispartofseriesPHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSINGen
dc.relation.ispartofseriesVolume 52, issue 1en
dc.rightsopenAccessen
dc.subject.keywordCarbon
dc.subject.keywordGold
dc.subject.keywordHydrometallurgy
dc.subject.keywordLeaching
dc.subject.keywordPre-robbing
dc.titlePreg-robbing of gold in chloride-bromide solutionen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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