METHOD OF DISCRIMINATIONAL STORAGE OF TAILINGS Russian patent published in 1995 - IPC

FIELD: mining. SUBSTANCE: prepared pit is filled with a non-filtering layer. Then a drain layer and a water collecting well are formed. After that a layer with relatively high content of alkali, alkali-earth and hardly soluble metals is placed and covered with another layer with low content of hardly soluble metals. The last is a layer of sands with low content of alkali and alkali-earth metals. The tailings are delivered with the aid of a pulp line. Treatment of tailings by base-containing solutions results in solving, their migration and local enrichment with metals in initial form. EFFECT: enhanced efficiency. 2 cl, 1 dwg