Mining or in situ disintegration of hard material – With separation of materials – Separation below surface of earth or water
Patent
1986-02-11
1987-07-21
Crowder, Clifford D.
Mining or in situ disintegration of hard material
With separation of materials
Separation below surface of earth or water
37 61, 37DIG8, 417183, E02F 388, E02F 700
Patent
active
046813721
ABSTRACT:
An undersea mining apparatus including a hydraulically operated ejector pump for submerged use to provide a reduced pressure adjacent the outlet of a lift pipe, to thereby induce flow of mineral nodules from the ocean floor through the pipe. The jet flow is provided by an annular jet defined between the outlet of the lift pipe and the inlet of a dredge pipe that includes a converging-diverging venturi therewithin. The venturi is movable relative to the outlet of the lift pipe to adjust the area of the annulus defined therebetween, and thereby permit variation of the rate of flow of pressurized water and of mineral nodules therethrough.
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Crowder Clifford D.
Mangels Alfred J.
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