Issues »  Volume 47, Issue 7

Cadmium Purification by Comprehensive-Distillation Method

O. P. Shcherban, O. I. Kondrik, D. O. Solopikhin

National Science Centre ‘Kharkiv Institute of Physics and Technology’, N.A.S. of Ukraine, 1 Akademichna Str., UA-61108 Kharkiv, Ukraine

Received: 13.02.2025; final version - 07.04.2025. Download: PDF

An analysis of literature data for oxidative refining of cadmium is presented. A thermodynamic analysis of the oxidation reactions of Cd and the impurities Zn, Pb, Fe, Cu, Tl, Ni, Sn, As, Sb, etc. present in it during melting under standard conditions, as well as during distillation of cadmium in vacuum, is performed. The strength of oxide compounds of impurities in cadmium is evaluated by the absolute value of the change in Gibbs free energy in the condensed (liquid) state and in the vapour (vacuum) phase. A comprehensive method for Cd purification, including oxidizing refining and subsequent removal of non-volatile and volatile impurities in a single refining cycle is investigated.

Key words: cadmium, oxides of cadmium and impurities, Gibbs energy, oxidizing refining, filtration, distillation.

URL: https://mfint.imp.kiev.ua/en/abstract/v47/i07/0769.html

DOI: https://doi.org/10.15407/mfint.47.07.0769

PACS: 61.72.Yx, 64.75.Bc, 81.05.Bx, 81.20.Ym, 81.65.Tx, 81.70.Jb, 82.60.Hc

Citation: O. P. Shcherban, O. I. Kondrik, and D. O. Solopikhin, Cadmium Purification by Comprehensive-Distillation Method, Metallofiz. Noveishie Tekhnol., 47, No. 7: 769-781 (2025)

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