METHOD FOR SELECTIVE INTRADUMP CONCENTRATION OF METAL-CONTAINING ROCKS Russian patent published in 1995 - IPC

FIELD: mining industry. SUBSTANCE: method for selective intradump concentration of metal-containing rocks includes formation of impervious and drainage layers, and water intake plant is installed. Laid on drainage layer successively are barrier layers of tailings with relatively high content of metal and leached layer of rock placed above. Number of layers corresponds to number of migrating metals. Formed at the bottom is layer containing metals with lowest ionization potential, and then, layers are laid in the sequence corresponding to rising value of ionization potential of metals contained in them. Tailings are supplied by pulp feed-line. In tailings storage, successive dissolving of metals from leached layer takes place depending on ionization potential. Metal-bearing solutions migrate to underlying layers where metals are precipitated in respective barrier layer depending on ionization potential. EFFECT: higher efficiency. 1 dwg