Abstract
For better understanding and maximal value utilization of the WEEE smelting process, the behavior and distribution of different trace elements must be known. In this study, the behavior of nickel as a trace element was studied in an equilibrium system with metallic copper—spinel saturated iron silicate slag (with 3 wt-% K2O)—iron aluminous spinel—gas. The experiments were conducted in alumina crucibles at 1300 °C, in oxygen pressure range of 10−10–10−5 atm. A time series of 15–60 min experiments was also conducted for investigating the formation rate of the primary spinel phase in the system. The results show that the distribution coefficient of nickel between metallic copper and liquid slag changes from approximately 70 to 0.4 along the increasing oxygen pressure range. In addition, a significant part of the nickel deports into the spinel phase. The spinel formation was investigated based on composition analysis results and visual observations from SEM-images.
Original language | English |
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Title of host publication | Extraction 2018 |
Subtitle of host publication | Proceedings of the First Global Conference on Extractive Metallurgy |
Publisher | Springer |
Pages | 1073-1082 |
Number of pages | 10 |
ISBN (Electronic) | 978-3-319-95022-8 |
ISBN (Print) | 978-3-319-95021-1 |
DOIs | |
Publication status | Published - 2018 |
MoE publication type | A4 Conference publication |
Event | Global Conference on Extractive Metallurgy - Ottawa, Canada Duration: 26 Aug 2018 → 29 Aug 2018 Conference number: 1 http://www.extractionmeeting.org/Extraction/Home/Extraction/Default.aspx?hkey=7b5c7a17-4f49-4312-a245-8178042aab43 |
Publication series
Name | The Minerals, Metals & Materials Series |
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Conference
Conference | Global Conference on Extractive Metallurgy |
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Country/Territory | Canada |
City | Ottawa |
Period | 26/08/2018 → 29/08/2018 |
Internet address |
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Karppinen, M. (Manager)
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