METHOD FOR INTEGRATED DEVELOPMENT OF STEAM COAL DEPOSIT Russian patent published in 2013 - IPC E21C41/18 C22B11/00 

FIELD: mining.

SUBSTANCE: method includes detailed research of material constitution of coal beds to detect metals of the platinum group that are subject to associated extraction. Selective mining of coal is performed, at the same time the coal with higher content of osmium is separately supplied to a coal-burning plant, such as a boiler house of the coal burning plant. The osmium-containing coal is burnt in a furnace of a low-temperature boiling layer of a water-heating or steam, boiler with at least double surplus of air supplied for burning, compared to theoretically necessary one, temperature in the volume of the boiling layer is maintained at the level of 800±50°C. Gaseous combustion products are sent into an emulsifier, in which from them they first remove large ash particles, then their contact is provided with a solution of alkali, such as NaOH; products of reaction of smoke gases with the alkali solution are discharged from the emulsifier and sent to recover osmium to metal.

EFFECT: invention makes it possible to increase efficiency of integrated development of steam coal deposits.

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