GERMANIUM SOLVENT EXTRACTION FROM SULFURIC ACID SOLUTIONS (AND CO-EXTRACTION OF GERMANIUM AND GALLIUM) |
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| Authors: | D. D. Harbuck J. C. Judd D. V. Behunin |
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| Affiliation: | U.S. Bureau of Mines, Salt Lake Research Center , Salt Lake City, UT, 84108 |
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| Abstract: | The U.S. Bureau of Mines investigated solvent extraction methods for recovering germanium from sulfuric acid leach filtrates. A new organic extractant system was developed which synergistically and selectively recovered germanium from these solutions. A continuous solvent extraction circuit was operated for over 150 hr, extracting over 90% of the germanium from 0.30 g/L Ge filtrates containing 40 to 60 g/L free acid. Over 90% of the loaded germanium was stripped from the organic phase with water at 75 °C. A section on germanium and gallium co-extraction is also presented. |
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