Тип публикации: статья из журнала
Год издания: 2011
Идентификатор DOI: 10.3103/S1067821211040122
Ключевые слова: aluminum solubility, cryolite-alumina electrolytes, productivity of electrolyzers, current yield, Cryolite-alumina melts, Liquidus temperature, Metal content, Metal solubility, Potassium fluorides, Substantial variations, Aluminum, Electrolytes, Electrolytic cells, Fluorine compounds, Halide minerals, Lithium, Potassium, Volumetric analysis, Solubility, aluminum oxide, chemical analysis, cryolite, electrolyte, heating, temperature effect
Аннотация: The complex influence that additives of aluminum, calcium, lithium, and potassium fluorides have on the total solubility of aluminum in the cryolite-alumina melt is studied. The investigations were performed at a constant overheating of the melt saturated by alumina (15 degrees C relative to the liquidus temperature). The aluminum Показать полностьюsolubility was determined via the prolonged holding of metal in the melt at a specified temperature with the subsequent sampling of the specimen, which was rapidly frozen, and the metal content in it was determined by a gas-volumetric analysis. It was seen that, as the cryolite ratio (CR) decreases from 2.5 to 2.2, the aluminum solubility in the electrolyte drops by a factor of 1.7, while the further decrease in CR to 2.1 does not cause its substantial variation. The introduction of 3 wt % LiF and 5 wt % KF into the melt with a constant overheating of the melt substantially decreases the metal solubility, namely, by a factor of 2.9 and 1.5, respectively.
Журнал: RUSSIAN JOURNAL OF NON-FERROUS METALS
Выпуск журнала: Vol. 52, Is. 4
Номера страниц: 360-363
ISSN журнала: 10678212
Место издания: NEW YORK
Издатель: ALLERTON PRESS INC