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Journal of Mining Sciences

2017 year, number 5

Use of Zeolite Rocks in Metal Recovery from Mine Water

O. V. EREMIN1, E. S. EPOVA1, R. A. FILENKO1, O. S. RUSAL’1, V. A. BYCHINSKY2
1Institute of Natural Resources, Ecology and Cryology, Siberian Branch, Russian Academy of Sciences, ul. Nedorezova 16a, Chita, 672002 Russia
2Vinogradov Institute of Geochemistry, Siberian Branch, Russian Academy of Sciences, ul. Favorskogo 1a, Irkutsk, 664033 Russia
Keywords: ионы золота, тонкодисперсное золото, доизвлечение, флотация, флотореагент-модификатор, растительный экстракт, биосорбент, борщевик, фурокумарины, metal-bearing mine solutions, zeolite rocks, ammonium salts, metal extraction

Abstract

Mine water at some mineral deposits in Transbaikalia contains valued metals commercially recoverable from solutions using zeolite rocks. Experimental impregnation of metal-bearing mine water from Sherlovaya Gora and Bom-Gorphon areas with sodium and ammonium kinds of clinoptilolite rocks from Shivyrtui deposit has been carried out. In the laboratory conditions, metals adsorbed by zeolite rocks are extracted by means of displacement by concentrated ammonium salts with the further calcinations of the filtrate up to 500 °С. The metal content of the obtained cakes is conditioned by metal concentrations in solutions, by methods of impregnation and by the eluents applied. Saturation of ammonium types of zeolites with mine water solutions from the Sherlovaya Gora lake and the further extraction of adsorbed metals by ammonium acetate yields the recovery of lantanoids of 73%. The obtained results, considering multiple recycling of the sorbent, can be used in development of an efficient technology for extraction of rare earth elements from mine solutions.