METHOD OF MINING DEPOSITS DEVELOPMENT Russian patent published in 2019 - IPC E21C41/22 C22B3/04 E21B43/28 

FIELD: mining.

SUBSTANCE: invention relates to mining industry and can be used in underground mining of ore deposits with complex distribution of useful components. Upper mechanical extraction of ore mass is carried out with increased content of valuable components along the cleaning unit, its screening by fractions, wells with small content of valuable components are drilled with small-diameter wells, explosives are charged at intervals and exploded. Preliminarily impregnated with concentrated leaching solution of -20 mm screening fraction extracted by mechanical method is laid – after preliminary activation mixing in mixer – into worked space in bottom of leaching chamber, and the oversize +20 mm screening fraction, extracted by mechanical method, is subjected to separation with extraction of concentrate. Condensate part of the ore mass, broken by the explosion and subjected to separation, undergoes secondary separation, the concentrate of which is supplied for grinding and enrichment together with the concentrate obtained after separation of the oversize screening fraction. All extracted tailings and off-standard part of ore mass broken by explosion and subjected to separation – after preliminary activation mixing in mixer – are put into leaching chamber on layer of undersized screening fraction.

EFFECT: technical result of proposed method consists in improvement of efficiency of process by solving problem of increasing through extraction of useful components during extraction and processing of different-grade, including off-grade ores, as well as their intensification by means of activation mixing before leaching and selective distribution in the leaching chamber.

1 cl, 1 dwg