Gallium extraction from Jajarm Bayer process liquor using micro-emulsions | ||
| Journal of Mining and Environment | ||
| مقاله 12، دوره 8، شماره 2، تیر 2017، صفحه 269-276 اصل مقاله (702.1 K) | ||
| نوع مقاله: Case Study | ||
| شناسه دیجیتال (DOI): 10.22044/jme.2016.780 | ||
| نویسندگان | ||
| H. Amani؛ H. Naderi* | ||
| Department of Mining and Metallurgical Engineering, Yazd University, Yazd, Iran | ||
| چکیده | ||
| Gallium extraction from Jajarm Bayer process liquor (Jajarm, Iran) was investigated using microemulsions. Also the behavior of aluminum was studied as an impurity. Kelex100 (4-ethyl, 1-methyl, 7-octyl, 8-hydroxyquinoleine), iso-decanol and n-butanol, and kerosene were used as the surfactant, co-surfactant, and oil phase, respectively. Ternary phase diagrams were produced using various co-surfactants at different C/S ratios. The results obtained show that Winsor II is the predominant region, and the least area was obtained using iso-decanol at C/S = 4. Using n-butanol or iso-decanol at C/S = 2, 100% of gallium was extracted. The equations of the statistical models for the gallium and aluminum extractions using different co-surfactants were calculated. While the highest gallium extraction (100%) was obtained using n-butanol, due to the high co-extraction of aluminum, the lowest separation and enrichment factors were obtained for this system. The highest separation and enrichment factors were obtained using iso-decanol at C/S = 2. The point with the compositions of XAF = 30, XOF = 20, and XC/S = 50 was found to be a suitable choice, and led to 74% and 14% extractions for gallium and aluminum, respectively. An enrichment factor of 5.28 was obtained. | ||
| کلیدواژهها | ||
| Micro-Emulsion؛ Gallium؛ Bayer Process؛ Jajarm؛ Solvent extraction | ||
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