GB1405997A - Method and apparatus for collecting mineral aggregates from sea beds - Google Patents

Method and apparatus for collecting mineral aggregates from sea beds

Info

Publication number
GB1405997A
GB1405997A GB5625273A GB5625273A GB1405997A GB 1405997 A GB1405997 A GB 1405997A GB 5625273 A GB5625273 A GB 5625273A GB 5625273 A GB5625273 A GB 5625273A GB 1405997 A GB1405997 A GB 1405997A
Authority
GB
United Kingdom
Prior art keywords
silt
aggregates
blade
duct
conduit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5625273A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vale Canada Ltd
Original Assignee
Vale Canada Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vale Canada Ltd filed Critical Vale Canada Ltd
Publication of GB1405997A publication Critical patent/GB1405997A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9243—Passive suction heads with no mechanical cutting means
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C50/00—Obtaining minerals from underwater, not otherwise provided for

Abstract

1405997 Dredging apparatus INTERNATIONAL NICKEL CO OF CANADA LTD 5 Dec 1973 [21 Dec 1972] 56252/73 Heading E1F Mineral aggregates 26 lying on or just below the uper surface 25 of a submerged layer of silt are collected therefrom by an apparatus that compresses the aggregates lying on top of or projecting above the surface of the silt down into the silt, shears away and raises the upper, aggregate-containing layer of the silt, causes the silt of this layer to be washed away from the aggregates, and appropriately discharges the resultant concentration of aggregates. The apparatus comprises a body having a forwardly and upwardly inclined leading face 12 and a flat undersurface, a shearing blade 15 positioned below the body at the rear end thereof to extend over all or substantially all the width of the body, and a collecting and discharge duct 16 that extends upwards and rearwards from the blade to a coupling for a discharge pipe and has an apertured rear wall 27 that allows silt to pass out of the duct whilst the aggregates are retained therein. The aggregates may be discharged from the pipe into a separate, towed, aggregates-receiving container, or to aggregates-receivng means at the surface, or back onto the silt for subsequent collection by some other suitable means. The front wall 31 of the duct may be apertured to allow of entry of silt-flushing water or the water may enter the duct from a conduit 21 in which is situated a powered impeller 22. The intake of such a conduit 21 is preferably at a height above the leading face of the body as to ensure that water entering the conduit is substantially free from silt. The blade is united to the body by spaced, vertical gusset plates having downwardly and rearwardly inclined leading edges so as to form a grid with which a poweroperated, material-clearing comb can be associated. The blade may be straight or may have a straight central portion and forwardly extending wing portions. The weight and dimensions of the apparatus are such that the downpressure exerted by the apparatus on the silt is from 0.25 to 1.00 pounds per sq. in.
GB5625273A 1972-12-21 1973-12-05 Method and apparatus for collecting mineral aggregates from sea beds Expired GB1405997A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00317166A US3802740A (en) 1972-12-21 1972-12-21 Concentration of minerals

Publications (1)

Publication Number Publication Date
GB1405997A true GB1405997A (en) 1975-09-10

Family

ID=23232412

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5625273A Expired GB1405997A (en) 1972-12-21 1973-12-05 Method and apparatus for collecting mineral aggregates from sea beds

Country Status (6)

Country Link
US (1) US3802740A (en)
JP (1) JPS572879B2 (en)
CA (1) CA994819A (en)
DE (1) DE2363048A1 (en)
FR (1) FR2211587B1 (en)
GB (1) GB1405997A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109026007A (en) * 2018-08-30 2018-12-18 中南大学 A kind of seabed walking mechanism suitable for dilute softground

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975054A (en) * 1974-12-11 1976-08-17 The International Nickel Company, Inc. Undersea mining and separating vehicle having motor-powered water jet
US3988843A (en) * 1974-12-11 1976-11-02 The International Nickel Company, Inc. Mining transition chamber
US4147390A (en) * 1975-08-06 1979-04-03 Union Miniere S.A. Nodule dredging apparatus and process
JPS5243704A (en) * 1975-10-02 1977-04-06 Sumitomo Metal Mining Co Device for picking up ore on water bottom
US4070061A (en) * 1976-07-09 1978-01-24 Union Miniere Method and apparatus for collecting mineral aggregates from sea beds
JPS53100101A (en) * 1977-02-15 1978-09-01 Mitsubishi Heavy Ind Ltd Sea bottom mineral collecting device
JPS56119095A (en) * 1980-02-22 1981-09-18 Kogyo Gijutsuin Device for collecting mineral nodule distributing on surface of deposit layer of sea bottom
GB0623450D0 (en) 2006-11-24 2007-01-03 Drabble Ray Faunal friendly dredging system
BE1017861A3 (en) * 2007-11-29 2009-09-01 Dredging Int Towing head of a towing hopper and method for dredging using this towing head.
GB2515890B (en) * 2014-05-12 2015-06-17 Barrnon Ltd Apparatus for the removal of sludge
CN106869211A (en) * 2017-04-06 2017-06-20 中交天津航道局有限公司 A kind of strand inhales the construction method that ship excavates the shallow area of coral
EP3927941A4 (en) * 2019-02-20 2022-04-20 Deep Reach Technology Inc. Methods for reducing sediment plume in deepsea nodule mining

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3588174A (en) * 1969-08-01 1971-06-28 Tetra Tech Collector assembly for deep sea mining
DE2015894A1 (en) * 1970-04-03 1971-10-14 Deutsche Babcock & Wilcox Ag, 4200 Oberhausen Underwater lap device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109026007A (en) * 2018-08-30 2018-12-18 中南大学 A kind of seabed walking mechanism suitable for dilute softground
CN109026007B (en) * 2018-08-30 2023-12-01 中南大学 Seabed running gear suitable for weak base

Also Published As

Publication number Publication date
FR2211587B1 (en) 1981-04-30
US3802740A (en) 1974-04-09
JPS49101202A (en) 1974-09-25
JPS572879B2 (en) 1982-01-19
FR2211587A1 (en) 1974-07-19
CA994819A (en) 1976-08-10
DE2363048A1 (en) 1974-07-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees
PCNP Patent ceased through non-payment of renewal fee