Nodule collector

Details Nodule collector Nodule collector

1981-02-17

1983-01-18

Purser, Ernest R.

Mining or in situ disintegration of hard material

With separation of materials

Separation below surface of earth or water

37DIG8, E02F 394

Patent

active

043689230

ABSTRACT:
A nodule collector for deep sea mining includes an outer sledge and an inner sledge disposed in and connected to the outer sledge for trailing movement therewith. The inner sledge is provided with a transversely extending cutting blade, a plurality of jet nozzles arranged along the cutting blade, and a longitudinally oriented duct. When the collector travels across the seafloor, the cutting blade cuts into the seafloor and raises it thereover. The water jets from the nozzles impinge upon the summit of the raised seafloor material so that nodules and sediments at the summit are carried away by the water jets and introduced through the duct into a collecting chamber provided in the outer sledge. The collecting chamber has a special design to prevent entrance of undesirably large sized nodules thereinto and residence of undesirably small sized nodules and sediments therein. The nodules collected in the collecting chamber are successively transported up to the mining ship for recovery.

REFERENCES:
patent: 3988843 (1976-11-01), Brockett
patent: 4042279 (1977-08-01), Asakawa
patent: 4070061 (1978-01-01), Obolensky
patent: 4147390 (1979-04-01), Deliege et al.
patent: 4311342 (1982-01-01), Latimer

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