surface access borehole mining

Borehole (Slurry) Mining of Coal, Uraniferous . - CDC stacksBorehole (slurry) mining of coal, uraniferous sandstone, oil sands, and phosphate ore. ... and it can access mineral deposits that presently are .. pump mechanically driven from the surface and 20-ft- .. from the surface through a borehole. It.surface access borehole mining,surface access borehole mining,Classification of hydraulic borehole mining technological processes .. fracturing, suction and lifting of the slurry to the surface, delivery of the slurry to the slurry pump. . Hydraulic borehole mining unit: patent 1370244 USSR N° 4088854; filed . Mine working support construction during hydraulic borehole mining: patent . Developing countries access · IOP Publishing open access policy.Experimental research on the performances of water jet devices and .Jun 20, 2018 . Jet devices are the key component of borehole hydraulic mining, which .. Due to the frictional resistance between the surface of the water jet and the air, ... The length of the access section (l') has no direct effect on the jet.

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surface access borehole mining