Journal ArticleDOI
Electrolytic recovery of tungsten and cobalt from tungsten carbide scrap
TLDR
In this paper, conditions for simultaneous oxidation of tungsten carbide and dissolution of cobalt have been investigated, using concentration of nitric acid, current density, temperature and time as the variables.About:
This article is published in Hydrometallurgy.The article was published on 1989-08-01. It has received 38 citations till now. The article focuses on the topics: Cemented carbide & Carbide.read more
Citations
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Journal ArticleDOI
Recycling of tungsten carbide scrap metal: A review of recycling methods and future prospects
TL;DR: A review of current research efforts and various methods of scrap recovery, future prospects and sustainability of the tungsten industry, are presented in this paper, with a special emphasis on conversion and energy costs, purity of the scrap metal, recovery of all valuable constituents, as well as diminished environmental impact.
Journal ArticleDOI
Recycling of WC–Co hardmetal sludge by a new hydrometallurgical route
TL;DR: In this paper, a hydrometallurgical process based on aqua regia treatment of WC-Co hardmetal sludge was developed to simultaneously extract cobalt in solution and forming tungstic acid as residue in a single step.
Journal ArticleDOI
Selective dissolution of the cobalt binder from scraps of cemented tungsten carbide in acids containing additives
TL;DR: In this paper, cobalt binder and tungsten carbide were dissolved using anodic linear sweep and cyclic voltammetry to select adequate electrolytes, in which the passivation was diminished and thus the cobalt dissolution was enhanced.
Journal ArticleDOI
A comprehensive review on recycling methods for cemented tungsten carbide scraps highlighting the electrochemical techniques
Prvan Kumar Katiyar,N S Randhawa +1 more
TL;DR: A review of the electrochemical methods for the recycling of tungsten carbide materials along with other recycling methods in brief can be found in this article, where several pyro-hydrometallurgical processes have been explored at the laboratory as well as on the pilot scale.
Journal ArticleDOI
Dissolution behavior of cobalt from WC–Co hard metal scraps by oxidation and wet milling process
TL;DR: In this paper, the authors investigated wet milling as a process for dissolution of Co from WC-Co hard metal scrap in a low acid-concentration recycling method, considering the rare and uneven deposition of Co worldwide.
References
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Journal ArticleDOI
Selective Dissolution of the Binder Phase Alloy (Co‐W) from WC‐Co Cemented Carbides in Particulate Bed Electrode Systems
TL;DR: In this paper, the binder phase alloy (W•Co) is selectively leached from WC•6% Co cemented carbide pieces in tumbled and packed bed electrolytic systems in dilute solutions of phosphoric acid.
Journal ArticleDOI
Electrolytic Cobalt in Katanga
M. A. Bouchat,J. J. Saquet +1 more
TL;DR: In this paper, a description of the processes employed by the Union Miniere du Haut-Katanga (UML) in the Katanga region of South Africa is given, with particular emphasis on cobalt.