METHOD OF SELECTIVE IN-DUMP BENEFICATION OF ORES Russian patent published in 1997 - IPC

FIELD: mining industry. SUBSTANCE: according to method, for higher efficiency of in-dump benefication of ores, initially formed is drain course, then formed are courses to be beneficiated based on off-grade ores, and course to be leached. Courses to be beneficiated are stored according to adopted index of settling metal. Course to be leached is formed of multicomponent ores. Performed is multiple transfer of metals to solution. Used as ores for forming of course to be leached are ores which contain metals of different valence. Migration of metals in solutions is performed in half-valence form. Courses to be beneficiated are separated at storing according to valence of ions of metals which are subject to settling. EFFECT: high efficiency. 2 cl, 1 dwg