[CEST2019_00856] A new sustainable approach in recovering Cobalt from “hard metal” production by-products
by Oumarou Amadou A., De Gaudenzi G.P., Marcheselli G.C., Piredda M., Serpe A.
The present work shows the capability of Maleic Acid solutions to tune the amount of Co in cemented carbide-based recovery powders with a Co content exceeding the threshold (10% Co) for industrial manufacturing in Hard Metal production and required by safety regulations. Maleic acid solutions react promptly and selectively in very mild conditions (0.5M, room temperature and pressure, EtOH as solvent) with Co contained in WC-Co sintered powders obtaining the [Co(Mal)2(H2O)4] compound almost quantitatively.
Poster presentation in Solid waste management-POSTER SESSION