Abstract
A laboratory study was conducted for the determination of dissolved metals (including aluminum, sodium, and lithium) in cryolitic melts by using a tin extraction-stripping technique. Results demonstrate that the dissolved metal is not only aluminum, but actually a combination of aluminum, sodium, and lithium whose concentrations are dependent on the cryolitic composition and temperature. The results are shown to be rational and self consistent. Differences in total metallic solubility for earlier work in the literature can be attributed to the variations in experimental techniques. Metallic aluminum solubility increased with increasing bath temperature and decreased with increasing cryolite ratio (CR) and LiF concentration. Metallic sodium solubility increased with increasing CR and bath temperature, and decreased with increasing LiF concentration. Metallic lithium solubility increased with increasing CR, LiF concentration, and bath temperature, but was an order of magnitude less than the other metallic species. When molar CR was greater than 2.5, metallic sodium was the dominant component in the total solubility.
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© 2016 The Minerals, Metals & Materials Society
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Wang, X., Peterson, R.D., Richards, N.E. (2016). Dissolved Metals in Cryolitic Melts. In: Bearne, G., Dupuis, M., Tarcy, G. (eds) Essential Readings in Light Metals. Springer, Cham. https://doi.org/10.1007/978-3-319-48156-2_7
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DOI: https://doi.org/10.1007/978-3-319-48156-2_7
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