Device for borehole hydraulic mining

Details Device for borehole hydraulic mining Device for borehole hydraulic mining

E - Fixed Constructions

21

B

166/30

E21B 21/12 (2006.01)

Patent

CA 1304674

Abstract of the Disclosure The device for borehole hydraulic mining comp- rises a pipeline for delivering fluid into the hole accommodated inside a pipeline for bringing pulp to the surface and featuring a constant inside diameter along the entire length of this pipeline. The pipe- line for delivering fluid into the hole carries a hydraulic jet. The device also comprises a hydraulic elevator with a fluid and pulp mixing chamber secured to the lower end of the pipeline for bringing pulp to the surface, and a nozzle secured to the lower end of the pipeline for delivering fluid into the hole. The fluid and pulp mixing chamber and the noz- zle of the hydraulic elevator enclose the pipeline for drilling fluid into the hole with clearances al- lowed.

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