| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
Impurity Uptake during Cooling Crystallization of Nickel Sulfate |
| Author(s) |
Ina Beate Jenssen, Seniz Ucar, Oluf Bøckman, Ole Morten Dotterud, Jens-Petter Andreassen |
| On-Site Speaker (Planned) |
Ina Beate Jenssen |
| Abstract Scope |
The ever-increasing battery production for electric vehicles leads to a need for recycling of valuable metals used in batteries, such as nickel, for a sustainable development. Nickel can be recovered from process streams or side streams in hydrometallurgical industry as nickel sulfate by crystallization, in order to obtain high purity products for applications like battery-grade nickel sulfate. In this work, NiSO<sub>4</sub>*6H<sub>2</sub>O was precipitated by cooling crystallization in a temperature-controlled batch reactor, and uptake of chloride, sodium and magnesium was investigated. Precipitates were characterized by XRD and their impurity contents were determined by ICP-MS. Increasing impurity concentrations in the reactor gave increased impurity uptake, and the highest uptake was provided by magnesium. The results indicated that sodium and chloride were adsorbed on the crystal surface, while magnesium was incorporated in the bulk of the crystals, possibly explained by the similar properties of nickel and magnesium. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, |