METHOD OF PROCESSING OF BROWN COAL IN PLACE OF ITS BEDDING Russian patent published in 2015 - IPC E21C45/00 E21B43/28 

FIELD: mining.

SUBSTANCE: method of processing of brown coal in the place of its bedding comprises drilling of vertical, inclined or horizontal wells from daylight surface down to the deposit, simultaneous mechanical action by axial and radial water jet flows from the borehole hydromining tool. The physical action is performed by means of rotation of radial flows, untwisting the crushed rock mass around the borehole hydromining tool, thus implementing jet mill effect. The suspension with the first dispersed medium is obtained in the form of the first target product - liquid concentrate of water-soluble humic acids which after rotary elutriation of brown coal and inorganic components is sucked in through the filter by the borehole hydromining tool and is supplied to the daylight surface. After drainage of the extraction chamber the physical and chemical impact action on the elutriated brown coal is performed by means of supply into the extraction chamber of alkalized water which as the second target product through the filter is sucked in by the borehole hydromining tool and is supplied to the daylight surface. Further obtaining target products.

EFFECT: significant growth of productivity and expansion of range of the target products obtained during of production in the form of useful mineral components.