|About this Abstract
||Part C-3: Processing of Critical Metals
||M-23: Influence of substrate properties on the selective leaching performance of Co from cemented carbides
||Gregor Kuecher, Stefan Luidold, Christoph Czettl, Christian Storf
|On-Site Speaker (Planned)
A lack of basic knowledge about the semi-direct recycling methods for hard metals hinders the application in industrial scale. However, advantages like reduced expenses and lower environmental impact draw interest at future potentials. Consequently, this report aims to offer insight into the influence of varying bulky hard metal substrates during their lixiviation in acidic media with an oxidant. The statistical software Modde 11 assisted in the development of a DOE for evaluation of the impact of average grain size, binder content and TaC on the leaching characteristics. The other experimental parameters exhibited constant conditions in preference. Among them remain temperature, solution concentration and amount, duration as well as substrate surface exposed to liquid volume. Eventually, response surface diagrams and factors of the computed model equation describe the effects of varying substrate qualities on leached binder metal and selectivity.
||Planned: At-meeting proceedings