METHOD FOR IN-DUMP REDISTRIBUTION OF RARE METALS Russian patent published in 1997 - IPC

FIELD: ecology. SUBSTANCE: this method can be used in storing non-standard ores of rare and rare-earth metals. Initially, draining layer is formed, then first and second layers to be beneficiated. Installed in second layer are electrodes. After that, layer to be lixiviated is formed. At delivery of lixiviating solutions from appropriate source, rare metals are dissolved and they form electrically neutral complexes, other rare metals migrate as cations. In result, their differentiation takes place. Electrically neutral complexes migrate into first layer, and cations migrate into second layer to be beneficiated where their concentration within limits of geochemical barriers takes place. EFFECT: high efficiency. 2 cl, 1 dwg