METHOD FOR ENRICHMENT OF TECHNOGENIC GOLD-CONTAINING FORMATIONS Russian patent published in 2018 - IPC B03B7/00 B03B1/00 

FIELD: mining.

SUBSTANCE: invention relates to the mining industry and can be used to increase the efficiency of the process of gravitational enrichment of technogenic gold-bearing formations with fine-grained gold due to the opening of mineral grains and cleaning the surface of minerals from films and contaminants of various types. Method for enrichment of technogenic gold-containing formations includes wet classification of technogenic formations according to size classes with subsequent reagent and ultrasonic treatment, gravitational enrichment of each class with separation of the concentrate "golden head", depleted gravity concentrate and tailings of gravitational enrichment. Wet classification is carried out according to size classes of +1 mm, -1 + 0.5 mm; -0.5 + 0.2 mm; -0.2 + 0.1 mm followed by reagent treatment of each particle size class and hydrodynamic activation by mechanical stirring with a stirrer of the suspension in water T:S, equal to 1:3, in the presence of a medium regulator – calcined soda with the addition of reagent – KJ₂ at a rate of 300 g/t and simultaneous ultrasonic treatment for 10 minutes at a frequency of 22 kHz, average sound intensity 1 W/cm² and with subsequent gravitational enrichment on a concentration table with separation of the concentrate "golden head", depleted gravitational concentrate and tailings of gravitational enrichment.

EFFECT: high efficiency of the process of gravitational enrichment of technogenic gold-bearing formations with fine-grained gold due to the opening of mineral grains and cleaning the surface of minerals from films and contaminants of various types.

1 cl, 1 dwg