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Title:
PUMPING METHOD FOR ORES OF DEEP SEA MINERAL RESOURCES USING HEAVY LIQUID
Document Type and Number:
WIPO Patent Application WO/1991/010808
Kind Code:
A1
Abstract:
When a piston pump (2) on a ship (1) is operated, a heavy fluid having a greater specific gravity than the bulk specific gravity of the ore of deep sea mineral resources (hereinafter called ''nodules'') is discharged onto the ship (1) from a U-shaped sea bottom pipe (4) connected to a descending pipe (3) provided down to the deep sea bottom through an ore pumping pipe (5). The nodule ores collected on the deep sea bottom and containing useful heavy metals which are primarily manganese nodules and cobalt-rich crust ores are supplied into the pipe (4) through ore supply apparatuses (7) and (16) and are continuously pumped up to the ship (1) from the sea bottom through the pipe (5) along with the heavy fluid by a power which is by far smaller than the power used in the ore hoist method of the prior art because of the buoyancy of the heavy fluid.

Inventors:
Jimbo, Kenjiro
Application Number:
PCT/JP1990/000050
Publication Date:
July 25, 1991
Filing Date:
January 17, 1990
Export Citation:
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Assignee:
Jimbo, Kenjiro
International Classes:
E02F7/10; E21C50/00; (IPC1-7): E21C45/02
Foreign References:
JPS5640238B2
JPS609200B2
US3753303A
US4391468A
JPS52142601A
JPS56134995U
JPS5752479B2
JPS5617514B2
JPS568196B2
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