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An investigation of the failure mechanisms of lead anodes in copper electrowinning cells
Engineering Failure Analysis, Volume: 108, Start page: 104273
Swansea University Author: Johann Sienz
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©2019 All rights reserved. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND)
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DOI (Published version): 10.1016/j.engfailanal.2019.104273
Abstract
Lead alloys are used as permanent anodes for electrowinning of base metals such as copper. The corrosion of anodes is costly because of their relatively short lifetime, material cost, and their impact on cathodic deposit quality. Failure of anodes sometimes occurs before the predicted lifetime, havi...
Published in: | Engineering Failure Analysis |
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ISSN: | 1350-6307 |
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Elsevier BV
2020
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URI: | https://cronfa.swan.ac.uk/Record/cronfa52707 |
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2020-11-19T14:33:19.4787676 v2 52707 2019-11-12 An investigation of the failure mechanisms of lead anodes in copper electrowinning cells 17bf1dd287bff2cb01b53d98ceb28a31 0000-0003-3136-5718 Johann Sienz Johann Sienz true false 2019-11-12 FGSEN Lead alloys are used as permanent anodes for electrowinning of base metals such as copper. The corrosion of anodes is costly because of their relatively short lifetime, material cost, and their impact on cathodic deposit quality. Failure of anodes sometimes occurs before the predicted lifetime, having a negative impact on the efficiency and economics of the electrowinning process.This study investigates some recently failed lead alloy anodes. These failures occurred after a short period of service in a commercially operating electrowinning tank house. The samples were metallographically investigated with the help of an optical, three-dimensional microscope and a scanning electron microscope (SEM) equipped with Energy-Dispersive X-ray Spectroscopy (EDS) analysis. It is suggested that the reasons for failure are improper operational issues in the tank house, especially the level of manganese content in the electrolyte, which leads to unexpected corrosion. Journal Article Engineering Failure Analysis 108 104273 Elsevier BV 1350-6307 Lead anodes, Manganese, Electrowinning, Copper, Microstructure 1 1 2020 2020-01-01 10.1016/j.engfailanal.2019.104273 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2020-11-19T14:33:19.4787676 2019-11-12T09:35:38.7641146 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised A. Elrefaey 1 Y. Gu 2 J.D. James 3 C. Kneen 4 I. Crabbe 5 Johann Sienz 0000-0003-3136-5718 6 52707__15860__9392178f97254513b4d66094f6cd6d29.pdf elrefaey2019.pdf 2019-11-12T09:43:26.4609864 Output 9442557 application/pdf Accepted Manuscript true 2020-11-14T00:00:00.0000000 ©2019 All rights reserved. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND) true eng http://creativecommons.org/licenses/by-nc-nd/4.0/ |
title |
An investigation of the failure mechanisms of lead anodes in copper electrowinning cells |
spellingShingle |
An investigation of the failure mechanisms of lead anodes in copper electrowinning cells Johann Sienz |
title_short |
An investigation of the failure mechanisms of lead anodes in copper electrowinning cells |
title_full |
An investigation of the failure mechanisms of lead anodes in copper electrowinning cells |
title_fullStr |
An investigation of the failure mechanisms of lead anodes in copper electrowinning cells |
title_full_unstemmed |
An investigation of the failure mechanisms of lead anodes in copper electrowinning cells |
title_sort |
An investigation of the failure mechanisms of lead anodes in copper electrowinning cells |
author_id_str_mv |
17bf1dd287bff2cb01b53d98ceb28a31 |
author_id_fullname_str_mv |
17bf1dd287bff2cb01b53d98ceb28a31_***_Johann Sienz |
author |
Johann Sienz |
author2 |
A. Elrefaey Y. Gu J.D. James C. Kneen I. Crabbe Johann Sienz |
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Journal article |
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Engineering Failure Analysis |
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108 |
container_start_page |
104273 |
publishDate |
2020 |
institution |
Swansea University |
issn |
1350-6307 |
doi_str_mv |
10.1016/j.engfailanal.2019.104273 |
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Elsevier BV |
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Faculty of Science and Engineering |
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Faculty of Science and Engineering |
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Faculty of Science and Engineering |
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School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised |
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description |
Lead alloys are used as permanent anodes for electrowinning of base metals such as copper. The corrosion of anodes is costly because of their relatively short lifetime, material cost, and their impact on cathodic deposit quality. Failure of anodes sometimes occurs before the predicted lifetime, having a negative impact on the efficiency and economics of the electrowinning process.This study investigates some recently failed lead alloy anodes. These failures occurred after a short period of service in a commercially operating electrowinning tank house. The samples were metallographically investigated with the help of an optical, three-dimensional microscope and a scanning electron microscope (SEM) equipped with Energy-Dispersive X-ray Spectroscopy (EDS) analysis. It is suggested that the reasons for failure are improper operational issues in the tank house, especially the level of manganese content in the electrolyte, which leads to unexpected corrosion. |
published_date |
2020-01-01T04:05:14Z |
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1763753396179828736 |
score |
11.031595 |