PROCESOO DI SEPARAZUONE SELETTIVA DI PIOMBO E ZINCO DAI MINERALI OSSIDATI
Selective sepn. of Pb and Zn from oxidised mineral comprises treating the Pb/Zn mineral with a complexing agent, then selectivety leaching out the Pb and finally extraction of the Zn in organic phase. The leaching is effected with a caustic medium at a pH which permits dissoln. of Pb but not Zn ions...
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Main Authors | , |
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Format | Patent |
Language | Italian |
Published |
21.05.1985
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Edition | 4 |
Subjects | |
Online Access | Get full text |
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Summary: | Selective sepn. of Pb and Zn from oxidised mineral comprises treating the Pb/Zn mineral with a complexing agent, then selectivety leaching out the Pb and finally extraction of the Zn in organic phase. The leaching is effected with a caustic medium at a pH which permits dissoln. of Pb but not Zn ions. The complexing agent is esp. an organic cpds. which has a specific chelating or sequestering activity in relation to Zn and makes the probe hydrophobic during the organic stage of the process. Higher yields are obtainable than in prior art. |
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Bibliography: | Application Number: IT19770084143 |