Abstract
Nowadays, the production and exploration of gold has an increased importance all over the world. Recycling is a significant source for the supply of gold and has a pronounced effect on its price. The flotation method, which is more economical and more environmentally friendly than cyanide leaching, has been investigated for recycling gold and silver from jewellery slag. A jewellery slag sample containing 28.3 ppm Au and 42.0 ppm Ag was obtained from a refinery in Turkey. Flotation concentrate assaying 614.6 ppm Au and 511 ppm Ag was achieved with recoveries of 89.0% and 83.2%, respectively. On the other hand, 87.8% Au and 81.5% Ag extractions were obtained by cyanide leaching tests. Based on these results, flotation is suggested, considering its environmental and economic benefits.
| Original language | English |
|---|---|
| Pages (from-to) | 233-241 |
| Number of pages | 9 |
| Journal | Waste Management and Research |
| Volume | 39 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 2021 |
Bibliographical note
Publisher Copyright:© The Author(s) 2020.
Funding
We would like to thank ONSA Refinery for providing the sample. The authors disclosed receipt of the following financial support for the research, authorship and/or publication of this article: This study was financially supported by the Istanbul Technical University within the scope of a scientific research project. The authors disclosed receipt of the following financial support for the research, authorship and/or publication of this article: This study was financially supported by the Istanbul Technical University within the scope of a scientific research project.
| Funders | Funder number |
|---|---|
| ONSA | |
| Istanbul Teknik Üniversitesi |
Keywords
- Jewellery scrap
- flotation
- gold
- jewellery waste
- leaching
- precious metal recycling
- silver
