COMPLEX DEVELOPMENT METHOD OF POWER-GENERATING COAL DEPOSITS Russian patent published in 2012 - IPC E21C41/18 C22B11/00 

FIELD: mining.

SUBSTANCE: method involves detailed study of composition of coal beds, separation of valuable components subject to incidental extraction, development of coal bed, conversion of valuable components to chemical compounds so that their physical state changes, extraction of those compounds and recovery of valuable components. Coal with commercial content of platinum or elements of platinum group of metals is extracted from coal bed selectively and delivered to the energy producing enterprise individually; it is enriched in coal pulverisation system till ore concentrate is obtained, and then it is mixed with fluorite dust and briquetted. Briquettes are burnt in grate-fired furnace of the boiler so that gaseous combustion products and solid residues are formed and removed. Removal of elements of platinum group of metals is performed by abrupt cooling of gaseous combustion products of briquettes to the temperature below condensation temperature of extracted components with their dilution in hydraulic cyclone water, and solid residues are used as ore for obtaining other valuable components.

EFFECT: increasing efficiency of complex development of power-generating coal deposit.

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