COMPLEX DEVELOPMENT OF COMBUSTIBLE SHALE DEPOSITS Russian patent published in 2015 - IPC E21C41/00 F23G5/27 C10B53/06 

FIELD: mining.

SUBSTANCE: this process comprises detailed analysis of the bed material composition, detection of valuable chemical element to be extracted in parallel, extraction of combustible shale, its dressing to valuable chemical element concentrate, preparation of the latter for combustion, conversion of valuable element into its chemical compounds by concentrate combustion in boiler fire-box for extraction of said components and recovery of valuable element. In case increased magnesium content in shale oil is revealed dressing of produced shale oil to magnesium-bearing concentrate is executed by pyrolysis with production of fuel gas and liquid hydrocarbons as commercial products. Said magnesium-bearing concentrate is fired in industrial boiler fluidized bed and magnesium oxide, a stock for recovery of magnesium. At recovery of magnesium produced are construction materials and minerals as commercial products Note here that a portion of heat power produced as hot combustible gases is directed for shale pyrolysis.

EFFECT: higher efficiency.

1 dwg