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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Bibliographic Details
Main Authors RINELLI GIORGIO, MARABINI ANNA MARIA
Format Patent
LanguageItalian
Published 21.05.1985
Edition4
Subjects
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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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.
Bibliography:Application Number: IT19770084143