METHOD FOR UNDERGROUND LEACHING OF SUITE OF POLYMETALLIC IMPERMEABLE ORE LAYERS OF HORIZONTAL OR INCLINED STRIKE DIVIDED BY ORE-LESS OR POORLY MINERALIZED ZONES

摘要

The method is used in mining of occurrences of low content of useful components. It ensures effective extraction of different useful components contained in occurrences of low metal content. The method includes driving or outcropping and preparatory works, forming of compensation space by excavation of the rocks of the intermediate layers having no ore or which are poorly mineralized, where the adjacent ore seams are blasted. The subsequent leeching is made by gradual filtration of different, selective for the respective metal, solutions or reagents or combinations thereof. The method allows the leaching of two or more useful components to be done simultaneously by a single reagent mode. 8 claims, 4 figures