ROCK MASS BENEFICIATION METHOD Russian patent published in 2024 - IPC B07B15/00 B07B9/00 

FIELD: mining.

SUBSTANCE: proposed invention relates to a method for beneficiation of rock mass, in particular to a method for beneficiation of coke, coal, adsorbent by magnetic separation during preliminary thermal action on surface and near-surface particles of fluidised layer of coal raw material with scanning pulsed laser radiation. Method of coal beneficiation comprises the following steps: removal of adhesive material from coal by washing coal with water or by blowing coal with air; drying of coal, cleaned from adhesive material, to moisture content of 2–7%; classification by size of dried coal with separation of fraction less than 3 mm; formation of a volumetric flow of a fluidised bed of classified coal particles on the vibratory tray; thermal effect on surface and near-surface particles of coal of fluidized bed moving along conveyor in chamber, scanning by pulse laser radiation at temperature of 250–2,500 °C in gas medium; magnetic separation of coal with extraction of magnetic particles.

EFFECT: higher quality of raw material beneficiation.

6 cl