CN112370862A - Slurry shipborne dehydration method for ocean mining ship - Google Patents
Slurry shipborne dehydration method for ocean mining ship Download PDFInfo
- Publication number
- CN112370862A CN112370862A CN202011147159.8A CN202011147159A CN112370862A CN 112370862 A CN112370862 A CN 112370862A CN 202011147159 A CN202011147159 A CN 202011147159A CN 112370862 A CN112370862 A CN 112370862A
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- dehydrator
- screening
- cyclone
- ore
- pulp
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- 238000005065 mining Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000018044 dehydration Effects 0.000 title claims abstract description 14
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 14
- 239000002002 slurry Substances 0.000 title claims description 6
- 238000012216 screening Methods 0.000 claims abstract description 55
- 239000002562 thickening agent Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011362 coarse particle Substances 0.000 claims abstract description 6
- 239000004576 sand Substances 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 8
- 239000011707 mineral Substances 0.000 abstract description 8
- 238000000926 separation method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002245 particle Substances 0.000 description 14
- 239000007787 solid Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
- B01D36/045—Combination of filters with centrifugal separation devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C50/00—Obtaining minerals from underwater, not otherwise provided for
- E21C50/02—Obtaining minerals from underwater, not otherwise provided for dependent on the ship movements
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cyclones (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention discloses an ore pulp shipborne dehydration method for an ocean mining ship, which comprises the following steps: s1: dewatering turbulent ore pulp lifted to a deck of a mining ship in submarine mining by a cyclone screening dehydrator; s2: conveying the oversize coarse particle dry ore in the step S1 to an ore collecting bin; conveying the undersize ore pulp to a centrifugal cyclone classification thickener; s3: automatically flowing overflow water of the centrifugal cyclone graded concentrator to an external discharge interface; s4: automatically flowing settled sand of the centrifugal cyclone classification thickener to a linear screening dehydrator for dehydration; s5: combining and conveying the dry ores on the sieve of the linear screening dehydrator and the dry ores on the sieve of the rotational screening dehydrator to a collecting ore bin; and conveying the undersize ore pulp of the linear screening dehydrator to a centrifugal cyclone classification thickener. The dehydration method has the advantages of stability, reliability, high automation degree, capability of reducing the marine transportation cost and realizing high-efficiency mineral water separation effect.
Description
Technical Field
The invention mainly relates to the technical field of deep sea mining, in particular to an ore pulp shipborne dehydration method for an ocean mining ship.
Background
The deep sea polymetallic nodules are widely distributed on the surface of various seabed in the world, and are also called manganese nodules, hydrothermal sulfide deposit and the like according to the characteristics of the forms and components of the polymetallic nodules. The polymetallic nodules are mostly produced near deep-bottom plains, sea ditches, submarine volcanoes and islands with the water depth of 3000 + 5000 meters, the storage capacity of the oceans in the world is about 3 trillion tons according to data, 1.7 trillion tons exist in the pacific only, and the polymetallic nodules continue to grow at the speed of thousands of tons every year.
At present, many countries have detailed exploration on deep sea areas such as the pacific and the atlantic, and a few trawl type mining tests are carried out, but commercial mining of deep sea polymetallic nodules is not realized. According to the screening discovery of the nodule particle size of the seabed polymetallic ore obtained by early trial mining of China ocean Association, in order to facilitate the lifting of ore pulp, the seabed mining is subjected to first-stage crushing, the crushed particle size accounts for 5.65% in proportion to +20 mm, 87.93% in proportion to + 1mm to-20 mm, 4.91% in proportion to-0.1 mm to + 1mm, only 1.50% in proportion to-0.1 mm, and the volume concentration of the ore pulp is about 5%.
In order to make many metal mining products in seabed accord with shipborne transportation requirement, reduce the transportation cost of mining products, furthest reduces the influence of waste water discharge to marine ecological environment simultaneously, so need a device that can realize mining ship shipborne ore, separation of water fast high-efficiently.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the ore pulp shipborne dehydration method for the marine mining ship, which is stable and reliable, has high automation degree, can reduce the marine transportation cost and can realize high-efficiency ore-water separation effect.
In order to solve the technical problems, the invention adopts the following technical scheme:
an ore pulp shipborne dehydration method for an ocean mining ship comprises the following steps:
s1: dewatering turbulent ore pulp lifted to a deck of a mining ship in submarine mining by a cyclone screening dehydrator;
s2: conveying the oversize coarse particle dry ore in the step S1 to an ore collecting bin; conveying the undersize ore pulp to a centrifugal cyclone classification thickener;
s3: automatically flowing overflow water of the centrifugal cyclone graded concentrator to an external discharge interface;
s4: automatically flowing settled sand of the centrifugal cyclone classification thickener to a linear screening dehydrator for dehydration;
s5: combining and conveying the dry ores on the sieve of the linear screening dehydrator and the dry ores on the sieve of the rotational screening dehydrator to a collecting ore bin; and conveying the undersize ore pulp of the linear screening dehydrator to a centrifugal cyclone classification thickener.
As a further improvement of the above technical solution:
and the rotational flow screening dehydrator, the centrifugal rotational flow grading thickener and the linear screening dehydrator are all arranged on a ship-borne supporting operation platform.
The cyclone screening dehydrator adopts a cylindrical structure, and the centrifugal cyclone grading thickener adopts a columnar structure.
The outlet of the cyclone screening dehydrator is connected with the ore collecting bin by a conveying device.
The outlet of the cyclone screening dehydrator is connected with the centrifugal cyclone grading thickener by a buffer slurry tank and a delivery pump in sequence.
The centrifugal cyclone classifying thickener is connected with the linear screening dehydrator through a pipeline.
Compared with the prior art, the invention has the advantages that:
the invention relates to an ore pulp shipborne dehydration method for an ocean mining ship, which is characterized in that turbulent ore pulp lifted by submarine mining is screened and dehydrated by a cyclone screening dehydrator, oversize coarse-particle dry ore is conveyed to a collection ore bin, undersize ore pulp is conveyed to a centrifugal cyclone grading thickener for grading concentration, overflow water of the centrifugal cyclone grading thickener automatically flows to an outward discharge interface, settled sand of the centrifugal cyclone grading thickener 3 automatically flows to a linear screening dehydrator, oversize products of the linear screening dehydrator and oversize products of the cyclone screening dehydrator are combined and conveyed to the collection ore bin, undersize products of the linear screening dehydrator are conveyed to the centrifugal cyclone grading thickener again to form circulating screening and dehydration, and finally, dry ore products are obtained in the collection ore bin. Compared with the traditional method, the shipborne dewatering device can continuously process unsteady-state ore pulp lifted in deep sea mining at a large flow, and meet the requirements of normal working operation of a grade sea condition environment and navigation safety of a grade sea condition system in an inoperative state; the apparent water content of the dehydrated dry mineral product is within 20 percent, the light removal rate is more than 60 percent, the particle size of discharged particles is less than 0.1 millimeter, and the particle content in the wastewater is not more than 1 g/L; the device has the efficient mineral water separation effect, can promote ocean mining ship's work efficiency, reliable greatly, and degree of automation is high, to future commercial large-scale development deep sea mineral resources, reduces the marine cost, has the significance.
Drawings
FIG. 1 is a schematic flow diagram of the present invention.
Fig. 2 is a schematic view of the structure of the dewatering apparatus on board a ship according to the present invention.
The reference numerals in the figures denote:
1. a shipborne supporting operation platform; 2. a rotational flow screening dehydrator; 3. a centrifugal cyclone grading thickener; 4. a linear screening dehydrator; 5. collecting ore bins; 6. a conveying device; 7. a buffer slurry tank; 8. a delivery pump.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
As shown in fig. 1 and 2, one embodiment of the method for dewatering pulp on board a marine mining vessel according to the present invention comprises the following steps:
s1: the turbulent flow ore pulp lifted to the deck of the mining ship in the submarine mining process is dehydrated through a cyclone screening dehydrator 2;
s2: conveying the oversize coarse particle dry ore in the step S1 to a collection ore bin 5; conveying the undersize ore pulp to a centrifugal cyclone classification thickener 3;
s3: the overflow water of the centrifugal cyclone graded concentrator 3 automatically flows to an external discharge interface;
s4: automatically flowing the settled sand of the centrifugal cyclone classification thickener 3 to a linear screening dehydrator 4 for dehydration;
s5: combining and conveying the dry ores on the sieve of the linear screening dehydrator 4 and the dry ores on the sieve of the rotational screening dehydrator 2 to a collecting ore bin 5; and conveying the undersize ore pulp of the linear screening dehydrator 4 to the centrifugal cyclone classifying concentrator 3.
By adopting the method, the turbulent flow ore pulp lifted by submarine mining is screened and dehydrated by the cyclone screening dehydrator 2, the dry ore with coarse particles on the screen is conveyed to the collection ore bin 5, the ore pulp under the screen is conveyed to the centrifugal cyclone grading concentrator 3 for grading concentration, the overflow water of the centrifugal cyclone grading concentrator 3 automatically flows to the discharge port, the settled sand of the centrifugal cyclone grading concentrator 3 automatically flows to the linear screening dehydrator 4, the oversize products of the linear screening dehydrator 4 and the oversize products of the cyclone screening dehydrator 2 are combined and conveyed to the collection ore bin 5, the undersize products of the linear screening dehydrator 4 are conveyed to the centrifugal cyclone grading concentrator 3 again to form circulating screening and dehydration, and finally, the dry ore product is obtained in the collection ore bin 5. Compared with the traditional method, the shipborne dewatering device can continuously process unsteady-state ore pulp lifted in deep sea mining at a large flow, and meets the requirements of normal working operation of a 4-level sea condition environment and navigation safety of a 6-level sea condition system in an inoperative state; the apparent water content of the dehydrated dry mineral product is within 20 percent, the light removal rate is more than 60 percent, the particle size of discharged particles is less than 0.1 millimeter, and the particle content in the wastewater is not more than 1 g/L; the device has the efficient mineral water separation effect, can promote ocean mining ship's work efficiency, reliable greatly, and degree of automation is high, to future commercial large-scale development deep sea mineral resources, reduces the marine cost, has the significance.
In this embodiment, the cyclone screening dehydrator 2, the centrifugal cyclone classifying thickener 3, and the linear screening dehydrator 4 are all mounted on the ship-mounted support operation platform 1. The shipborne supporting operation platform 1 is welded on the deck, a stable and feasible installation foundation is provided for each functional part, reasonable installation of equipment can be realized, and operation and maintenance are convenient.
In this embodiment, the cyclone sieving dehydrator 2 has a cylindrical structure, and the centrifugal cyclone classifying thickener 3 has a cylindrical structure. The cyclone screening dehydrator 2 is of a cylinder structure, and a multi-layer screen structure is arranged in the inner cavity of the cylinder of the cyclone screening dehydrator 2, so that the cyclone screening dehydrator is suitable for directly feeding turbulent pulp fluid with large volume, low concentration and wide particle size fraction solid particle distribution, can rapidly remove water, and realizes rapid collection of particle minerals.
In this embodiment, the centrifugal cyclone graded concentrator 3 is a cylindrical structure, and the centrifugal cyclone graded concentrator 3 is used for rapidly concentrating ore pulp with a feed solid concentration of less than 5% to more than 30%, and ensuring that the particle size of solid particles in overflow is less than 0.1 mm.
In the embodiment, the size of the screen of the linear screening dehydrator 4 is 0.1-0.4 mm, and the linear screening dehydrator is used for rapidly and effectively collecting fine-fraction solid particles and forming a circulation loop with the centrifugal cyclone classification concentrator 3.
In this embodiment, the outlet of the cyclone screening dehydrator 2 is connected with the ore collecting bin 5 by a conveying device 6. The dry ore products on the screen are conveyed to the collecting ore bin 5 through the conveying device 6, the structure is simple and reliable, and the automation degree is further improved.
In this embodiment, the outlet of the cyclone sieving dehydrator 2 is connected with the centrifugal cyclone classifying concentrator 3 by a buffer slurry tank 7 and a delivery pump 8 in sequence. The buffer pulp tank 7 is used for ensuring the flow of the delivery pump 8, and the delivery pump 8 provides pumping force for undersize pulp delivered to the centrifugal cyclone classification thickener 3.
In this embodiment, the centrifugal cyclone classifying concentrator 3 and the linear sieving dehydrator 4 are connected by a pipeline. The structure is simple and reliable.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (6)
1. The shipborne pulp dewatering method for the ocean mining ship is characterized by comprising the following steps:
s1: the turbulent flow ore pulp lifted to the deck of the mining ship in the submarine mining process is dehydrated through a cyclone screening dehydrator (2);
s2: conveying the oversize coarse particle dry ore in the step S1 to a collection ore bin (5); conveying the undersize ore pulp to a centrifugal cyclone grading thickener (3);
s3: automatically flowing overflow water of the centrifugal cyclone graded concentrator (3) to an external discharge interface;
s4: automatically flowing the settled sand of the centrifugal cyclone grading thickener (3) to a linear screening dehydrator (4) for dehydration;
s5: dry ores on the screen of the linear screening dehydrator (4) and dry ores on the screen of the rotational screening dehydrator (2) are combined and conveyed to a collection ore bin (5); and conveying the undersize ore pulp of the linear screening dehydrator (4) to the centrifugal cyclone classification thickener (3).
2. The marine mining vessel pulp onboard dewatering method of claim 1, characterized by: and the cyclone screening dehydrator (2), the centrifugal cyclone grading concentrator (3) and the linear screening dehydrator (4) are all arranged on the ship-borne supporting operation platform (1).
3. The marine mining vessel pulp onboard dewatering method of claim 2, characterized by: the cyclone screening dehydrator (2) adopts a cylindrical structure, and the centrifugal cyclone grading concentrator (3) adopts a columnar structure.
4. The marine mining vessel pulp onboard dewatering method of claim 3, characterized by: the outlet of the cyclone screening dehydrator (2) is connected with the ore collecting bin (5) by a conveying device (6).
5. The marine mining vessel pulp onboard dewatering method of claim 4, characterized by: the outlet of the cyclone screening dehydrator (2) is connected with the centrifugal cyclone grading concentrator (3) in sequence by a buffer slurry tank (7) and a delivery pump (8).
6. The marine mining vessel pulp onboard dewatering method of claim 5, characterized by: the centrifugal cyclone classifying thickener (3) is connected with the linear screening dehydrator (4) by a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011147159.8A CN112370862A (en) | 2020-10-23 | 2020-10-23 | Slurry shipborne dehydration method for ocean mining ship |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011147159.8A CN112370862A (en) | 2020-10-23 | 2020-10-23 | Slurry shipborne dehydration method for ocean mining ship |
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| CN112370862A true CN112370862A (en) | 2021-02-19 |
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| CN202011147159.8A Pending CN112370862A (en) | 2020-10-23 | 2020-10-23 | Slurry shipborne dehydration method for ocean mining ship |
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|---|---|---|---|---|
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| US6197188B1 (en) * | 1998-07-23 | 2001-03-06 | Ge Nuclear Power Llc | Filtration system for concentrating radioactive debris |
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2020
- 2020-10-23 CN CN202011147159.8A patent/CN112370862A/en active Pending
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| US6197188B1 (en) * | 1998-07-23 | 2001-03-06 | Ge Nuclear Power Llc | Filtration system for concentrating radioactive debris |
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