| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ni-Co 2021: The 5th International Symposium on Nickel and Cobalt
|
| Presentation Title |
Chemical Leaching of Inactive Gold Mine Tailings as Secondary Source of Cobalt and Nickel – A Preliminary Case Study |
| Author(s) |
Marouen Jouini, Lucie Coudert, Mathilde Perrin |
| On-Site Speaker (Planned) |
Lucie Coudert |
| Abstract Scope |
Tailings from inactive gold mine sites represent a potential secondary source of precious and strategic metals including Co and Ni but also tailings that are not yet successfully restored. Three different mine tailings from Cobalt Mining Camp (Canada) were used. Preliminary chemical leaching were conduced with inorganic acids (HCl, H2SO4 and HNO3) to solubilize Co and Ni at different concentrations (0.01 – 0.5 N). The influence of the number of the leaching steps on the recovery of Co and Ni was also evaluated. Promising concentrations of Co (0.7%) and Ni (0.3%) were reported in S1, while lower concentrations were measured in S2 and S3 (0.02-0.1%), requiring pre-concentration steps before leaching. More than 90% of both Co and Ni were solubilized from S1 after only 30 min using H2SO4 (0.25N) at room temperature. Additional experiments are required to optimize operating conditions in terms of Co and Ni recoveries and operating costs. |
| Proceedings Inclusion? |
Planned: |