PIXE characterization of by-products resulting from the zinc recycling of industrial cemented carbides

Freemantle, C.S.; Sacks, Natasha; Topić, M.; Pineda-Vargas, C.A.

doi:10.1016/j.nimb.2015.07.064

Cited by 12 publications

(1 citation statement)

References 13 publications

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“…Furthermore, cemented carbide contains 74-91 wt.% tungsten; thus, cemented carbide scraps are regarded as a precious secondary tungsten resource in various countries. 6 Traditional recovery methods of cemented carbide scraps mainly include the molten zinc method, [7][8][9] electrochemical treatment method, 10,11 mechanical crushing method 12 and acid leaching method. 13,14 In 2015, our research group proposed a novel short-process method for recycling cemented carbide scrap via molten salt electrolysis.…”

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confidence: 99%

Efficient Dissolution of Tungsten Carbide Using an Oxygen-Containing Molten Salt

Zhang

et al. 2021

J. Electrochem. Soc.

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Efficient electrochemical dissolution of tungsten carbide is crucial to obtain an efficient recovery of cemented carbide via molten salt electrolysis. Based on the interfacial process, the dissolution mechanism of tungsten carbide in oxygen-containing molten salt was investigated via a mass loss test, electrochemical tests, and first principles calculations. Through the mass loss study, it was found that, although the tungsten-carbon bond was extremely stable, an effective electrochemical dissolution of tungsten carbide could also occur in the presence of oxygen ions. The electrochemical tests demonstrated that an increase in oxygen ions leads to a continuous substitution of chloride ions with oxygen ions on the anode surface. These oxygen ions are further converted into oxygen atoms under the action of an electric field. The oxygen atoms on the anode surface can then effectively destroy the tungsten-carbon bond and promote mass loss, as demonstrated by first principles calculations. In addition, the appearance of maximum mass can be related to the saturation of the electrostatic adsorption of oxygen ions.

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Efficient Dissolution of Tungsten Carbide Using an Oxygen-Containing Molten Salt

Zhang

et al. 2021

J. Electrochem. Soc.

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Influence of the Cemented Carbides Composition on the Disintegration in Liquid Zinc

Ebner

Luidold

Czettl³

et al. 2021

The Minerals, Metals &Amp; Materials Series

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A New Method of Tungsten Extraction by Liquid Cathode Molten Salt Electrolysis-Zinc Melt Separation

Zhang,

et al. 2024

Metall Mater Trans B

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PIXE characterization of by-products resulting from the zinc recycling of industrial cemented carbides

Cited by 12 publications

References 13 publications

Efficient Dissolution of Tungsten Carbide Using an Oxygen-Containing Molten Salt

Efficient Dissolution of Tungsten Carbide Using an Oxygen-Containing Molten Salt

Influence of the Cemented Carbides Composition on the Disintegration in Liquid Zinc

A New Method of Tungsten Extraction by Liquid Cathode Molten Salt Electrolysis-Zinc Melt Separation

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