METHOD FOR THE DEVELOPMENT OF MINERAL DEPOSITS Russian patent published in 2023 - IPC E21C41/22 E21B43/28 C22B3/04 

FIELD: mining.

SUBSTANCE: invention relates to the mining industry and can be used in the underground mining of ore deposits. Method for developing mineral deposits includes carrying out opening and preparatory workings, dividing a deposit into floors, cutting stope blocks, stope extraction of ore, downhole sorting of broken ore mass with the release of process flows, backfilling the mined-out area with substandard mining mass, represented by tailings of downhole sorting, leaching it with solutions leaching reagents and the issuance of conditioned ore and products to the surface. Downhole screening includes two sequential processes: crushing with screening and X-ray fluorescent separation. As a result of X-ray luminescent separation, two process streams are formed. The separated enriched product is sent to the first stream for flotation enrichment. Separated tailings of X-ray luminescent separation and non-separation size classes obtained in the process of crushing and screening, which have a rational size for leaching, are sent to the second technological stream for backfilling the worked-out space. From the X-ray luminescent separation tailings sent for leaching, a part of the host rocks is removed for useful use, namely marble, which hinders the leaching process.

EFFECT: increasing the efficiency of the process, as well as reducing the negative environmental impact of the technology on the environment.

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