| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
REWAS 2022: Recovering the Unrecoverable
|
| Presentation Title |
Investigation of Hydrometallurgical Recycling Parameters of WC-Co Cutting Tool Scraps |
| Author(s) |
Hakan Kusdemir, Onuralp Yücel, Ahmet Turan, Kagan Benzesik |
| On-Site Speaker (Planned) |
Kagan Benzesik |
| Abstract Scope |
The aim of the study is the investigation of hydrometallurgical recycling of WC-Co cutting tool scraps in detail. Scraps contained 83.67 wt.% W, 5.56 wt.% C, 8.76 wt.% Co. The study consisted of two successive stages. The first stage was based on the selective leaching of cobalt and separation from tungsten carbide. The second stage was the precipitation of cobalt from pregnant solutions. Before experiments, scraps were grinded and screened to lower than 250 μm average particle size. In the first stage, WC-Co powders were leached in HNO 3 solution. In order to achieve maximum dissolution of cobalt, acid concentration, temperature, stirring rate and raw material particle size parameters were investigated. In the second stage of the study, precipitation parameters of Co (in the form of Co(OH) 2 ) by using NaOH solution were investigated. The raw materials and recycling products were characterized by using
AAS, ICP-MS and XRD techniques. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Recycling and Secondary Recovery, Hydrometallurgy, Sustainability |