Приказ основних података о документу
Recycling of silver-plated brass for production of high purity copper and ultrafine silver powder for electric contacts
dc.creator | Dimitrijević, Stevan P. | |
dc.creator | Andić, Z. | |
dc.creator | Kamberović, Željko | |
dc.creator | Dimitrijević, Silvana B. | |
dc.creator | Vuković, Nikola | |
dc.date.accessioned | 2023-04-21T11:17:06Z | |
dc.date.available | 2023-04-21T11:17:06Z | |
dc.date.issued | 2014 | |
dc.identifier.issn | 0861-9808 | |
dc.identifier.uri | https://ritnms.itnms.ac.rs/handle/123456789/296 | |
dc.description.abstract | The paper presents an improved process for recycling of silver-plate brass housing. Silver and copper are recovered with a purity of 99.99 % and 99.90 %, respectively, with the aim of obtaining materials of higher value using additional procedures based on the same process and equipment. The novel approach with subsequent electrorefining yields copper of 99.99 % purity with BS EN 1978:1998 (Cu-CATH-1) quality and is referred to as LME grade A. Additional processing of silver results in superfine, micro-sized Ag powder with partie size from 0.14 to 1.13 mu m and purity of 99.999 %. Copper electrorefining tests were performed using 1.50 dm(3) of synthetic electrolyte in a 2 dm(3) electrolytic cell. Effects of current density and electrolyte composition were investigated. Optimal current density for the first and second refining was 120 A/m(2) and 200 A/m(2), respectively. Additional refining of silver was performed by chemical reduction from an aqueous solution. Optimal results were obtained with ascorbic acid as a reduction agent in concentration of 0.1 mol/dm(3) and polyvinylpyrrolidon as a protective agent in concentration of 2 % by mass. The investigation results could be adopted into production. | en |
dc.publisher | Bulgarian Academy of Sciences | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/34033/RS// | |
dc.rights | restrictedAccess | |
dc.source | Bulgarian Chemical Communications | |
dc.subject | silver | en |
dc.subject | recycling | en |
dc.subject | micro-sized powder | en |
dc.subject | electrorefining | en |
dc.subject | copper | en |
dc.title | Recycling of silver-plated brass for production of high purity copper and ultrafine silver powder for electric contacts | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 824 | |
dc.citation.issue | 4 | |
dc.citation.other | 46(4): 814-824 | |
dc.citation.spage | 814 | |
dc.citation.volume | 46 | |
dc.identifier.rcub | conv_1046 | |
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_technorep_2553 | |
dc.identifier.scopus | 2-s2.0-84936777712 | |
dc.identifier.wos | 000348242400022 | |
dc.type.version | publishedVersion |
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