Interaction between PbO and the KCl–PbCl2–PbO System for Lead Electrochemical Refining

A KCl–PbCl2 (50.0–50.0 mol %) molten system was used as an electrolyte for secondary lead refining. As a result, pure lead and an anode product containing 52.81 mol % Sb, 33.66 mol % Bi, 7.54 mol % Pb, 3.74 mol % Ag, and 2.24 mol % As were obtained. Long-term electrochemical refining was found to be...

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Bibliographic Details
Published in:Journal of chemical and engineering data 2020-07, Vol.65 (7), p.3490-3498
Main Authors: Arkhipov, Pavel, Zaikov, Yurii, Katayev, Aleksandr
Format: Article
Language:English
Online Access:Get full text
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Summary:A KCl–PbCl2 (50.0–50.0 mol %) molten system was used as an electrolyte for secondary lead refining. As a result, pure lead and an anode product containing 52.81 mol % Sb, 33.66 mol % Bi, 7.54 mol % Pb, 3.74 mol % Ag, and 2.24 mol % As were obtained. Long-term electrochemical refining was found to be possible in the KCl–PbCl2 electrolyte. Thermal analysis was applied to determine liquidus temperatures of the KCl–PbCl2 (50.0–50.0 mol %) mixture with the PbO concentration ranging from 0 to 20 mol %. The temperature dependence of the PbO solubility in the KCl–PbCl2 (50.0–50.0 mol %) melt was studied, and the thermodynamic parameters of the PbO solubility were calculated. Electrical conductivities and densities of oxy-chloride melts were measured.
ISSN:0021-9568
1520-5134
DOI:10.1021/acs.jced.0c00080