CN111804662A - Sea sand desalination system and use method thereof - Google Patents
Sea sand desalination system and use method thereof Download PDFInfo
- Publication number
- CN111804662A CN111804662A CN202010792893.3A CN202010792893A CN111804662A CN 111804662 A CN111804662 A CN 111804662A CN 202010792893 A CN202010792893 A CN 202010792893A CN 111804662 A CN111804662 A CN 111804662A
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- sand
- sand washing
- washing bin
- water
- bin
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- 239000004576 sand Substances 0.000 title claims abstract description 403
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 199
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 131
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 239000000203 mixture Substances 0.000 claims description 17
- 239000010865 sewage Substances 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000011033 desalting Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 description 4
- 239000004566 building material Substances 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/102—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration with means for agitating the liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention discloses a sea sand desalination system and a using method thereof, wherein the sea sand desalination system comprises a first sand washing bin, a second sand washing bin, a third sand washing bin, a sand outlet hopper, a sand feeding transmission chain bucket assembly and a high-frequency vibration motor, wherein the sand outlet hopper is respectively arranged on the first sand washing bin and the second sand washing bin; the sand washing bin is internally provided with a sand washing passageway and a sand conveying passageway which are communicated, the high-frequency vibration motors are respectively distributed at the bottoms of the sand washing passageways, one end of the sand feeding transmission chain bucket assembly extends into the sand conveying passageway, and the other end of the sand feeding transmission chain bucket assembly is connected with a sand inlet or a sand collecting device of the sand outlet funnel; the sand outlet openings of the sand outlet funnels on the first sand washing bin and the second sand washing bin are connected with sand outlet pipes, and the sand outlet pipes are connected with the adjacent sand washing bins; the sand washing bins are provided with water inlet ports and water outlet ports, the water inlet ports on the adjacent sand washing bins are higher than the water outlet ports, and the upper end part of the sand conveying passage of the first sand washing bin is provided with a water outlet. The advantages are that: the invention has good desalting effect, environmental protection and no pollution.
Description
Technical Field
The invention belongs to the technical field of sea sand cleaning and desalting, and particularly relates to a sea sand desalting system and a using method thereof.
Background
At present, in the field of building engineering, sand is an indispensable building material, and because available resources of land and fresh water sand are limited, people begin to utilize sea sand resources in order to meet building requirements; however, since the sea sand, especially the surface of the sea sand, is coated with a large amount of salt, the sea sand is directly used as building materials which are easy to corrode reinforcing steel bars and the like, and therefore, the sea sand needs to be desalted (mainly chloride is removed) before being used; the conventional sea sand desalting method is to put sea sand and clean water into a sand washing pool and then add a chemical agent to remove surface salt, so that the desalting effect is poor, and the added chemical agent easily causes environmental pollution, so that improvement is needed.
Disclosure of Invention
The invention aims to provide a sea sand desalination system and a using method thereof aiming at the defects in the prior art, and the sea sand desalination system has the characteristics of good desalination effect, environmental protection and no pollution.
In order to achieve the purpose, the invention adopts the technical scheme that: a sea sand desalination system comprises a first sand washing bin, a second sand washing bin, a third sand washing bin, a sand outlet funnel, a sand feeding transmission chain bucket assembly and a high-frequency vibration motor, wherein the sand outlet funnel is respectively arranged on the first sand washing bin and the second sand washing bin; the first sand washing bin, the second sand washing bin and the third sand washing bin are respectively provided with a sand washing passageway and a sand conveying passageway, the sand washing passageways are positioned at two sides of the sand conveying passageway and are communicated with the sand washing passageways, the high-frequency vibration motors are respectively distributed at the bottoms of the sand washing passageways, one ends of the sand feeding transmission chain bucket assemblies on the first sand washing bin and the second sand washing bin extend into the sand conveying passageway, and the other ends of the sand feeding transmission chain bucket assemblies are connected with a sand inlet of a sand outlet funnel; one end of a sand feeding transmission chain bucket assembly on the third sand washing bin extends into a sand conveying passageway in the third sand washing bin, and the other end of the sand feeding transmission chain bucket assembly is connected with a sand collecting device; the sand outlet openings of the sand outlet funnels on the first sand washing bin and the second sand washing bin are connected with sand outlet pipes, the outlet opening of the sand outlet pipe on the first sand washing bin is connected with a sand washing passageway in the second sand washing bin, and the outlet opening of the sand outlet pipe on the second sand washing bin is connected with a sand washing passageway in the third sand washing bin; a sand washing passageway on the third sand washing bin is provided with a water inlet interface connected with a water pump, the upper end part of a sand conveying passageway is provided with a water outlet interface, the water outlet interface is connected with a water inlet of a sand washing passageway in the second sand washing bin through a water pipe, and a certain height difference is formed between the water inlet interface and the water outlet interface; the upper end part of the sand conveying passageway of the second sand washing bin is provided with a water outlet interface, the water outlet interface is connected with a water inlet of the sand washing passageway in the first sand washing bin through a water pipe, and a certain height difference is formed between the water outlet interface and the water inlet; the upper end part of the sand conveying passageway of the first sand washing bin is provided with a water outlet.
Preferably, the sand feeding transmission chain bucket assembly comprises a fixed support, a variable frequency motor, a chain wheel, a transmission chain and a chain bucket, the fixed support is fixed on the sand washing bin, the variable frequency motor is fixed on the fixed support and connected with the chain wheel to drive the chain wheel to rotate, the transmission chain is sleeved on the chain wheel and driven by the chain wheel to rotate, and the chain bucket is arranged on the transmission chain and rotates along with the transmission chain.
Preferably, a partition is arranged between the sand washing passageway and the sand feeding passageway.
A use method of a sea sand desalination system comprises the following steps:
a. clean water is injected into the third sand washing bin through a water pump, and the injected clean water flows to the second sand washing bin and the first sand washing bin through water pipes respectively;
b. after a certain amount of water source is injected, sea sand is lifted to the first sand washing bin through a crane and poured into the sand washing passageways on two sides, a high-frequency vibration motor is started, the water source drives the sea sand to rub with each other when flowing in the sand washing passageways through vibration and flow into the sand conveying passageways together, and cleaned sewage is discharged into a sewage tank from a water outlet at the upper end of the sand conveying passageway;
c. the mixture of the sea sand and the water entering the sand conveying passageway on the first sand washing bin is carried by the sand feeding transmission chain bucket assembly, conveyed to the sand outlet hopper and flows into the sand washing passageway of the second sand washing bin through the sand outlet hopper to be cleaned for the second time;
d. mixing sea sand and water in the second sand washing bin, performing secondary cleaning under the action of a high-frequency vibration motor, and discharging the mixture into a sand conveying passageway of the second sand washing bin, wherein a water outlet interface at the upper end of the sand conveying passageway can discharge a water source into the first sand washing bin;
e. the mixture of the sea sand and the water entering the sand conveying passage in the second sand washing bin is carried by the sand feeding transmission chain bucket assembly, conveyed to the sand outlet hopper and flows into the sand washing passage of the third sand washing bin through the sand outlet hopper to be cleaned for the third time;
f. the mixture of the sea sand and the water in the third sand washing bin can be continuously rubbed and cleaned under the action of the high-frequency vibration motor and flows into the sand conveying passageway, and a water outlet interface at the upper end of the sand conveying passageway can discharge a water source into the second sand washing bin; the cleaned sea sand and water mixture flowing into the sand conveying passageway is carried by the sand feeding transmission chain bucket assembly and conveyed to the sand collecting device to be collected by the sand collecting device.
Compared with the prior art, the invention has the advantages that: the sea sand is cleaned for three times through the first sand washing bin, the second sand washing bin and the third sand washing bin, and the sea sand is rubbed with each other in a water source through the vibration of the high-frequency vibration motor to remove salt on the surface of the sea sand in each cleaning.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic plan structure of the sand washing bin of the invention.
Fig. 3 is another plane structure diagram of the sand washing bin of the present invention.
Detailed Description
The following description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention, and the present invention is further described with reference to the accompanying drawings and embodiments.
Examples, see fig. 1-3: a sea sand desalination system comprises a first sand washing bin 10, a second sand washing bin 11, a third sand washing bin 12, a sand outlet hopper 13, a sand feeding transmission chain hopper assembly and high-frequency vibration motors 14, wherein the first sand washing bin 10, the second sand washing bin 11 and the third sand washing bin 12 are identical in structure, sand washing passageways 20 and sand conveying passageways 21 are arranged in the first sand washing bin 10, the second sand washing bin 11 and the third sand washing bin 12, the sand washing passageways 20 are located on two sides of the sand conveying passageways 21, the bottoms of the sand washing passageways are of a planar structure, the outer side faces of the sand washing passageways are provided with inclined planes, the high-frequency vibration motors 14 are distributed on the inclined planes, the number of the high-frequency motors 14 is determined according to the specification of the sand washing bins, and if the sand washing bins are thirty meters long, seven high-frequency vibration motors 14 are generally arranged on two sides of. The sand washing passage 20 and the sand conveying passage 21 are separated by a partition 23, the partition 23 is lower than the sand washing bin, and an opening for the sand washing passage 20 to pass through is reserved at the rear end part of the partition 23 so as to communicate the sand washing passage 20 with the sand conveying passage 21. The sand outlet funnel 13 is respectively arranged on the first sand washing bin 10 and the second sand washing bin 11, one end of the sand feeding transmission chain bucket assembly on the first sand washing bin 10 and the second sand washing bin 11 extends into the sand feeding passageway 21, and the other end of the sand feeding transmission chain bucket assembly is connected with a sand inlet of the sand outlet funnel 13; a sand outlet of the sand outlet hopper 13 is connected with a sand outlet pipe 15, an outlet of the sand outlet pipe 15 of the sand outlet hopper 13 on the first sand washing bin 10 is connected with a sand washing passageway 20 in the second sand washing bin 11, and an outlet of the sand outlet pipe 15 of the sand outlet hopper 13 on the second sand washing bin 11 is connected with a sand washing passageway 20 in the third sand washing bin 12; in operation, the mixture of sea sand and water fed into the sand conveying passageway 21 is scooped up by the sand loading drive chain bucket assembly and conveyed into the sand discharge hopper 13 for transport through the sand discharge hopper 13 to the next sand silo. The sand feeding transmission chain bucket component on the third sand washing bin 12 has one end extending into the sand feeding passageway 20 and the other end connected with a sand collecting device, which is generally a belt conveyor, so that the scooped up desalinated sea sand can be conveyed by the belt conveyor to a drying yard for dewatering for subsequent use. The sand feeding transmission chain bucket assembly consists of a fixed support 30, a variable frequency motor, a chain wheel 31, a transmission chain 32 and a chain bucket 33, wherein the fixed support 30 is fixed on the sand washing bin, the variable frequency motor (not shown) is fixed on the fixed support 30 or the sand washing bin and is connected with the chain wheel 31 to drive the fixed support to rotate, the transmission chain 32 is sleeved on the chain wheel 31 and is driven to rotate by the chain wheel 31, the other end of the transmission chain 32 is positioned in a sand conveying passageway 21 of the sand washing bin, and the chain bucket 33 is arranged on the transmission chain 32 and rotates along with the transmission chain 32; thus, the chain bucket 33 scoops up the mixture of sea sand and water during operation and transfers the mixture up through the transmission chain 32 for the purpose of discharging.
The sand washing passageway 20 of the third sand washing bin 12 is provided with a water inlet interface connected with a water pump, the water inlet can be communicated with a clean water source, the upper end part of the sand conveying passageway 21 of the third sand washing bin is provided with a water outlet interface, and the water outlet interface is higher than the height of sea sand in the sand conveying passageway 21 and lower than the height of the water surface, so that the water source higher than the water outlet interface can flow into the next sand washing bin. The water outlet port of the third sand washing bin 12 is connected with the water inlet of the sand washing passageway 20 in the second sand washing bin 11 through a water pipe 22, and a certain height difference exists between the water outlet port and the water inlet port, namely the water outlet port of the third sand washing bin 12 is horizontally as high as the water inlet port on the second sand washing bin 11, so that the water source can automatically flow downwards. The upper end part of the sand conveying passage 21 of the second sand washing bin 11 is provided with a water outlet port, the water outlet port is connected with a water inlet of the sand washing passage 20 in the first sand washing bin 10 through a water pipe 22, and a certain height difference exists between the water outlet port and the water inlet; this enables the water supply in the second sand wash silo 11 to flow into the first sand wash silo 10. The upper end of the sand conveying passageway 21 of the first sand washing bin 10 is provided with a water outlet 16, and the water outlet 16 can discharge sewage in the first sand washing bin 10. Before sand washing, a clean water source is discharged from a water inlet port on the third sand washing bin 12 through a water pump, and when the water source reaches a certain water level in the third sand washing bin 12, the water source flows out of a water outlet port and flows into the second sand washing bin 11; after the water source in the second sand washing bin 11 reaches a certain water level, the water flows out from the water outlet port on the second sand washing bin and flows into the first sand washing bin 10, and the water source is injected into the first sand washing bin; therefore, when sand is washed, sewage in the first sand washing bin 10 can be directly discharged from the water outlet 16, the water source in the third sand washing bin 12 can flow into the second sand washing bin 11 after being washed, and the water source in the second sand washing bin 11 flows into the first sand washing bin 10 after being washed, so that the waste of the water source is avoided.
A use method of a sea sand desalination system comprises the following steps:
a. clean water is injected into the third sand washing bin 12 through a water pump, and the injected clean water flows to the second sand washing bin 11 and the first sand washing bin 10 through the water pipe 22 respectively; this allows three sand washing silos to have a certain amount of water.
b. After a certain amount of water source is injected, sea sand is lifted to the first sand washing bin 10 by a crane and poured into the sand washing passageways 20 on two sides, the high-frequency vibration motor 14 is started, the sea sand is rubbed with each other in the water source through high-frequency vibration to remove salt on the surface, the sea sand is driven by the water source to flow into the sand conveying passageway 21, and the cleaned sewage is discharged into a sewage tank from the water outlet 16 at the upper end of the sand conveying passageway 20.
c. The mixture of sea sand and water entering the sand conveying passageway 21 of the first sand washing bin 10 is carried by the sand conveying chain bucket assembly and conveyed to the sand outlet hopper 13, and flows into the sand washing passageway 20 of the second sand washing bin 11 through the sand outlet hopper 13 for secondary cleaning.
d. The mixture of the sea sand and the water in the second sand washing bin 11 is cleaned for the second time under the action of the high-frequency vibration motor 14 and is discharged into the sand conveying passageway 21 of the second sand washing bin 11, and meanwhile, a water outlet port at the upper end of the sand conveying passageway 21 discharges a water source into the first sand washing bin 10.
e. The mixture of sea sand and water entering the sand conveying passageway 21 of the second sand washing bin 11 is carried up by the sand feeding transmission chain bucket assembly and conveyed to the sand outlet hopper 13, and flows into the sand washing passageway 20 of the third sand washing bin 12 through the sand outlet hopper 13 for the third cleaning.
f. The mixture of the sea sand and the water in the third sand washing bin 12 is continuously rubbed and cleaned by the high-frequency vibration motor 14 and flows into the sand conveying passageway 21, and a water outlet port at the upper end of the sand conveying passageway 20 discharges a water source into the second sand washing bin 11; the cleaned sand and water mixture flowing into the sand conveying aisle 20 is carried up by the sand-loading drive chain bucket assembly and conveyed to the sand-collecting device for collection by the sand-collecting device.
Claims (4)
1. A sea sand desalination system which is characterized in that: the sand washing machine comprises a first sand washing bin (10), a second sand washing bin (11), a third sand washing bin (12), a sand outlet funnel (13), a sand feeding transmission chain bucket assembly and a high-frequency vibration motor (14), wherein the sand outlet funnel (13) is respectively arranged on the first sand washing bin (10) and the second sand washing bin (11); the sand washing machine is characterized in that sand washing passageways (20) and sand conveying passageways (21) are arranged in the first sand washing bin (10), the second sand washing bin (11) and the third sand washing bin (12), the sand washing passageways (20) are positioned on two sides of the sand conveying passageways (21) and communicated with the sand conveying passageways, the high-frequency vibration motors (14) are respectively distributed at the bottom of the sand washing passageways (20), one ends of upper sand transmission chain bucket assemblies on the first sand washing bin (10) and the second sand washing bin (11) extend into the sand conveying passageways (21), and the other ends of the upper sand transmission chain bucket assemblies are connected with sand inlets of the sand outlet hoppers (13); one end of a sand feeding transmission chain bucket assembly on the third sand washing bin (12) extends into a sand conveying channel (20), and the other end of the sand feeding transmission chain bucket assembly is connected with a sand collecting device; the sand outlet openings of the sand outlet funnels (13) on the first sand washing bin (10) and the second sand washing bin (11) are connected with sand outlet pipes (15), the outlet of each sand outlet pipe (15) on the first sand washing bin (10) is connected with a sand washing channel (20) in the second sand washing bin (11), and the outlet of each sand outlet pipe (15) on the second sand washing bin (11) is connected with a sand washing channel (20) in the third sand washing bin (12); a water inlet interface connected with a water pump is arranged on a sand washing passageway (20) on the third sand washing bin (12), a water outlet interface is arranged at the upper end part of a sand conveying passageway (21), the water outlet interface is connected with a water inlet of a sand washing channel (20) in the second sand washing bin (11) through a water pipe (22), and a certain height difference is formed between the water inlet interface and the water outlet interface; the upper end part of the sand conveying passageway (21) of the second sand washing bin (11) is provided with a water outlet port, the water outlet port is connected with a water inlet of the sand washing passageway (20) in the first sand washing bin (10) through a water pipe (22), and a certain height difference is formed between the water outlet port and the water inlet port; the upper end part of the sand conveying passageway (21) of the first sand washing bin (10) is provided with a water outlet (16).
2. The sea sand desalination system of claim 1, wherein: go up husky drive chain fill subassembly by fixed bolster (30), inverter motor, sprocket (31), drive chain (32) and chain fill (33) constitute, fixed bolster (30) are fixed on washing the husky storehouse, inverter motor fixes on fixed bolster (30) and is connected with sprocket (31) and drives its rotation, drive chain (32) cover is established on sprocket (31) and is driven by it and rotate, chain fill (33) set up on drive chain (32) and rotate along with it.
3. A sea sand desalination system according to claim 1 or 2, characterized in that: a partition plate (23) is arranged between the sand washing passageway (20) and the sand feeding passageway (21).
4. A method of use of the sea sand desalination system of claim 1, characterized by: the method comprises the following steps:
a. clean water is injected into the third sand washing bin (12) through a water pump, and the injected clean water flows to the second sand washing bin (11) and the first sand washing bin (10) through a water pipe (22) respectively;
b. after a certain amount of water source is injected, sea sand is lifted to the first sand washing bin (10) through a crane and poured into the sand washing channels (20) on two sides, the high-frequency vibration motor (14) is started, the water source drives the sea sand to rub with each other when flowing in the sand washing channels (20) through vibration and flow into the sand conveying channel (21), and the cleaned sewage is discharged into a sewage tank from a water outlet (16) at the upper end of the sand conveying channel (20);
c. the mixture of sea sand and water entering the sand conveying passageway (21) of the first sand washing bin (10) is carried up by the sand conveying chain bucket assembly and conveyed to the sand outlet hopper (13), and flows into the sand washing passageway (20) of the second sand washing bin (11) through the sand outlet hopper (13) for secondary cleaning;
d. the sea sand and water in the second sand washing bin (11) are mixed under the action of a high-frequency vibration motor (14) to be cleaned for the second time and are discharged into a sand conveying channel (21) of the second sand washing bin (11), and meanwhile, a water source is discharged into the first sand washing bin (10) through a water outlet at the upper end of the sand conveying channel (21);
e. the mixture of sea sand and water entering the sand conveying channel (21) in the second sand washing bin (11) is carried up by the upper sand transmission chain bucket assembly and is conveyed to the sand outlet hopper (13), and flows into the sand washing channel (20) of the third sand washing bin (12) through the sand outlet hopper (13) for third cleaning;
f. under the action of the high-frequency vibration motor (14), the mixture of the sea sand and the water in the third sand washing bin (12) can continuously rub and clean the sea sand and flow into the sand conveying channel (21), and a water outlet port at the upper end of the sand conveying channel (20) can discharge water into the second sand washing bin (11); the mixture of the washed sea sand and water flowing into the sand conveying channel (20) can be lifted by the sand feeding transmission chain bucket assembly and conveyed to the sand collecting device to be collected by the sand collecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010792893.3A CN111804662B (en) | 2020-08-06 | 2020-08-06 | Sea sand desalination system and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010792893.3A CN111804662B (en) | 2020-08-06 | 2020-08-06 | Sea sand desalination system and use method thereof |
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| Publication Number | Publication Date |
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| CN111804662A true CN111804662A (en) | 2020-10-23 |
| CN111804662B CN111804662B (en) | 2024-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010792893.3A Active CN111804662B (en) | 2020-08-06 | 2020-08-06 | Sea sand desalination system and use method thereof |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114716168A (en) * | 2021-08-17 | 2022-07-08 | 厦门市中砂科技有限公司 | Sea sand purification method |
| CN115228833A (en) * | 2022-07-05 | 2022-10-25 | 陶翊彪 | Sea sand desalination cleaning bin and sea sand desalination device formed by same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114716168A (en) * | 2021-08-17 | 2022-07-08 | 厦门市中砂科技有限公司 | Sea sand purification method |
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| CN115228833B (en) * | 2022-07-05 | 2024-01-26 | 陶翊彪 | Sea sand desalination device |
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| Publication number | Publication date |
|---|---|
| CN111804662B (en) | 2024-08-30 |
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