Patent ID: 8408396

Claim:
A method of solid fuel beneficiation and transportation to a thermo-electric power station, comprising the steps of: separating minerals constituting a rock mass into a solid fuel using a heavy aqueous liquid, placing final beneficiation tailings from said separating step into a worked-out area, subsequently regenerating said heavy aqueous liquid from the final beneficiation tailings and returning the heavy aqueous liquid for re-use in said separating step, wherein said regenerating of the heavy aqueous liquid from the final beneficiation tailings includes: washing the final beneficiation tailings with a non-aqueous liquid, drying the final beneficiation tailings with a subsurface heat source, liquifying vapors of said heavy aqueous liquid conning from the final beneficiation tailings, distilling effluents left after washing the final beneficiation tailings into aqueous and non-aqueous components using heat released by liquifying the non-aqueous liquid, delivering the heavy aqueous liquid, and solid fuel remnants floating in the heavy aqueous liquid, to the thermoelectric power station, squeezing the heavy aqueous liquid from the solid fuel remnants, washing the solid fuel remnants with water and directing the solid fuel remnants to a combustion process, evaporating effluents left after washing the solid fuel remnants using heat released by condensing a working medium of a thermodynamic cycle of the thermo-electric power station, combining the effluents left after washing the solid fuel remnants, and the heavy aqueous liquid squeezed from the solid fuel remnants, into a mixture and returning the mixture for re-use in said separating step.