METHOD OF DRY CONCENTRATION OF DIAMOND-CONTAINING ORE Russian patent published in 2019 - IPC B07B9/00 B07C5/34 

FIELD: mining.

SUBSTANCE: proposed invention relates to the field of mining, namely, the primary processing of dry diamond-containing raw materials directly at the field. Method of dry concentration of diamond-containing ore includes two-stage disintegration of the original ore by crushing, the classification of crushed ore with the direction of the oversize class to the second stage of crushing the ore, the subsequent enrichment of industrial products into separate size classes, their classification and disintegration, aspiration. Two-stage disintegration of ore by crushing is carried out in roll-toothed crushers. After aspiration, the undersize classification product of crushed ore is sent to enrichment, the concentrate of which is sent to the processing plant, and the tailings are sent to the dump. Middling of midrange size is sent for enrichment, the concentrate of which is sent to the beneficiation plant. After classification, tails are sent to disintegrate the middling product and then send it after aspiration for enrichment. Enrichment of mid-size middling is carried out by radiographic separation, and the enrichment of the sublattice classification product is carried out by polyenergy separation. Polyenergy separation is carried out on a combination of the separation properties of the useful product, determined by sequential irradiation with several types of radiation of different energy ranges, for example, X-ray, ultraviolet and infrared radiation, when the flow of material moves along a conveyor belt.

EFFECT: increased diamond recovery.

1 cl, 1 dwg