METHOD OF HEAP LIXIVIATION Russian patent published in 1997 - IPC

FIELD: mining industry. SUBSTANCE: this can be used for extraction of minerals, and primarily of metal by way of lixiviation. Method implies preparation of site that is base, cutting trenches for collection and branching of product solutions, formation of pile, lixiviation of rock mass, washing and neutralization of pile and transportation of waste rock to storing site. Base of pile is formed by filling protective layers and branching over their perimeters with materials of high coefficient of filtration which do not interact with reagent. Trenches are arranged over their external contour. Lixiviation of rock mass is performed in process of loading and transfer of rock mass by means of hydraulic filling technique. Rock mass is loaded into hydraulic transportation unit filled with mother solution. Formation of pile body is performed by concentrated or spread hydraulic filling. EFFECT: high efficiency. 12 cl, 6 dwg