Insights regarding the reaction rate of Co during the leaching of a hard metal substrate in hydrochloric media

Gregor Kücher, Stefan Luidold, Christoph Czettl, Christian Storf

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The aim of the first part of this research consisted of determing the influence of temperature, acid and oxidant concentration on the extractability of Co out of a cemented carbide substrate within 30 min. To this, a DOE namely CCF served for the evaluation along with a particular specimen preparation. The core results comprised a chemical kinetic model equation inclusive response surface diagrams. Afterwards, the attained findings conduced to explore the long term leaching behavior respective a semi-direct recycling methodolgy. On the contrary to the primary examination, a pump provided continuous feeding of the oxidant to esure a constant leaching of the binder metal for several days.
Original languageEnglish
Title of host publicationInternational Conference on Refractory Metals and Hard Materials-Proceedings
Publication statusPublished - 28 May 2017
Event19th Plansee Seminar - Reutte, Austria
Duration: 28 May 20172 Jun 2017


Conference19th Plansee Seminar

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