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Operating experiences with electrolytes containing lithium fluoride

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Abstract

Additions of lithium salts to the cryolite bath of horizontal stud Soederberg cells have been tested for the last 10 years, at first with some pilot cells and then with full potlines of 35 and 40 kamp cells. Under special conditions, economic benefits result. Voltage, power, anode paste, and fluorine electrolyte consumptions are lower; current efficiency is increased. On the other hand, more attention is necessary in pot operations because the alumina solubility is reduced. The addition of a readily soluble alumina is advantageous. The LiF-content in the electrolyte seems to be limited according to type of pot to 2 to 5 pct. Type and method of adding the lithium salts affect the consumption of lithium salts. The influence of supplementary additions, as CaF2, KF, MgF2, and NaCl, will be discussed.

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  1. Lippewerk Vereinigte Aluminium-Werke AG, West-Germany

    Günther Wendt (Head of Aluminum Division)

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  1. Günther Wendt
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Wendt, G. Operating experiences with electrolytes containing lithium fluoride. Metall Trans 2, 155–161 (1971). https://doi.org/10.1007/BF02662651

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