CN102627421A - Sea sand countercurrent elutriation device - Google Patents
Sea sand countercurrent elutriation device Download PDFInfo
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- CN102627421A CN102627421A CN2011101538357A CN201110153835A CN102627421A CN 102627421 A CN102627421 A CN 102627421A CN 2011101538357 A CN2011101538357 A CN 2011101538357A CN 201110153835 A CN201110153835 A CN 201110153835A CN 102627421 A CN102627421 A CN 102627421A
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Abstract
A sea sand countercurrent elutriation device relates to the field of ore sand elutriation field. The device comprises: an elutriation channel part, a sand deposition part, a sand extraction part, a clear water addition part, a waterlogged discharge part, a sand feed inlet part, a sand discharge outlet part, a reflux channel part and a turbulent flow part. Through the vertically-arranged elutriation channel, the sand material undergoes countercurrent elutriation with water in the elutriation channel. The whole device has advantages of small land occupation area, low equipment investment cost and low operation cost. With a small amount of fresh water consumed, sea sand containing more than 0.13% of chloride ion content can be effectively purified until the chloride ion content is less than 0.01%.
Description
Technical field
The present invention relates to the ore in sand form field of washing, specifically relate to a kind of device that cleans extra large sand.
Background technology
Along with Chinese economic development, engineering construction faces the exhausted day by day predicament of river sand resource, extra large sand is cleaned the desalination back use the developing direction that has become building sand.
Sea sand mainly comprises near the sand beach sand, seabed sand and the estuario.Owing to contain the deleterious material of building structure in the extra large sand; Especially objectionable impurities such as cl ions can cause the building structure weather resistance to reduce especially; Bring serious hidden danger of quality to engineering, directly jeopardize the people life property safety, therefore extra large sand must be through purifying treatment before as building sand.Sea sand purifying treatment comprises outside the impurity such as removing thick gravel, shell, clod; The most important thing is to remove objectionable impuritiess such as cl ions; Objectionable impuritiess such as cl ions mainly comprise water-soluble muriate, sulfide, vitriol and can be suspended in materials such as the thin mud of water, light materials, organism.
Impurity such as thick gravel, shell, clod promptly can meet the relevant materials standard of building through screening out.
And the removal of objectionable impuritiess such as muriate is just relatively more difficult, and cleaning extra large sand at present both at home and abroad has multiple diverse ways, comprising: extra large sand nature placement methods, bucket type drainage fresh water irrigation, aproll fresh water irrigation, mechanical agitation are washed or the like.
See from the extra large sand method of existing cleaning result of use, all do not obtain good economic and social benefit: general easy purging method is difficult for effectively removing the objectionable impuritiess such as cl ions that contain in the extra large sand; And in order effectively to remove its objectionable impurities such as cl ions that contains in the extra large sand, but must drop into huge, cost long time, consume a large amount of electric power resource and Freshwater resources.
In order to obtain preferable cleaning sea sand method, application number: a kind of marine sand processing technique of 200710039602.8 provides a kind of elder generation through spreading out and putting on, embathing; The technical scheme of machine-washing with page or leaf wheel sand washer again; In the cleaning process of this technical scheme to extra large sand, the sand material almost is that whole process is in and assembles state in heaps and clean, and have more deficiency: early investment is high, operation energy consumption is high; The land occupation area is big; Quality fluctuation is big, and especially cleaning efficiency is poor, is difficult for obtaining the building sand of high request.
Likewise; Application number: the method for 201010236206.6 1 kinds of desalted sea sands and the technical scheme of utilizing the employed device of this method desalted sea sand to propose are also being assembled the extra large sand of cleaning under the state in heaps; Not enough below existing: the site operation personnel is many, the land occupation area is big; Level of automation is low, quality is unstable, can't realize continuity production.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, extra large sand convection current washing unit be provided, through the flushing channel of setting is set, let the sand material with the process of water convection current in obtain cleaning objectionable impurities such as cl ions in the sand of eccysis sea effectively.
The present invention realizes through following technical scheme, the present invention includes: flushing channel parts, sand holds the collection parts, carry that sand parts, clear water add parts, accumulated water is discharged parts, sand opening for feed parts, sand discharge port parts;
In the flushing channel component upper ends accumulated water being set discharges parts and with sand opening for feed parts, lower end sand is set and holds collection parts and clear water adding parts; Sand holds the connection of collection parts and carries the sand parts; Put forward the sand component ends sand discharge port parts are set;
Water adds parts from clear water and flows into the flushing channel parts; Upwards flow and discharge the parts discharge from accumulated water; The sand material adds from sand opening for feed parts; Gravitate disperses in water and down holds the collection parts to sand naturally and drop, and in flushing channel, has formed the convection current of flow direction contrary with the mobile clear water that makes progress, and the sand material has obtained cleaning in convection current.。
Said flushing channel parts lower end is communicated with the return flow line parts.
Turbulent parts more than one are set in the said flushing channel parts.
Said flushing channel is vertical shaft type or perpendicular tower installation.
Said clear water adds knockdown export and is provided with near carrying the sand component entry.
Said sand discharge port component ends below is provided with sand water sepn parts.
The said sand parts of carrying are Sand pump parts and sand suction pipe road parts.
The upper shed of said return flow line parts is higher than accumulated water and discharges knockdown export.
Said return flow line parts or clear water add parts or one carry sand parts or sand hold the collection parts can be shared by two above flushing channel parts.
Said turbulent parts are a ramp member.
The present invention compares prior art; Can realize following technique effect: at first in flushing channel; Objectionable impuritiess such as the sand material is unidirectional downwards to drop, cl ions (comprise water-soluble muriate, sulfide, vitriol and can be suspended in the materials such as thin mud, light materials, organism of water) break away from sand grains and dissolving (suspension) entry, water objectionable impurities such as the cl ions uniflux that makes progress of carrying under one's arms; Sand material and water form the convection current of flow direction contrary, and the sand material obtains cleaning in convection current.The characteristic that convection current is cleaned is: water is in the uniflux process that makes progress, and objectionable impuritiess such as cl ions are dissolved in (suspension) entry gradually, and harmful substance contents such as cl ions are uprised by low; Downwards in the unidirectional process that drops, objectionable impuritiess such as cl ions break away from sand grains to the sand material gradually, and harmful substance contents such as cl ions is by high step-down in the sand material.Therefore at the last wash phase of sand material; Harmful substance contents such as cl ions in the cleaning sand material institute water are minimum; Also be the cleanest; From known dissolution with solvents solute rule, the ability of clean objectionable impuritiess such as its dissolving of water (suspension) cl ions more by force, also dissolving (suspension) must be thorough more; Moreover depend on the height of the harmful substance contents such as cl ions of last wash phase institute water through the height of the harmful substance contents such as final cl ions of cleaning sand material.So the final stage of cleaning sand material has used the minimum water of harmful substance contents such as cl ions to clean the very low sand material of harmful substance contents such as cl ions, the harmful substance contents such as cl ions that obtain the sand material are minimum.
Secondly; Because the bounding force between the sand grains is less; And water is that certain viscosity is arranged; Naturally the sand material that drops can be distributed in the water under the viscous of water, friction, impact fully, no longer contact each other between the dispersive sand grains, no longer assembles in heapsly, makes single sand grain surface surrounded, to contact by water; Fully the long-pending surface in contact that is far longer than the sand material of assembling state in heaps of dispersive sand material and the surface in contact of water is long-pending in water, and bigger surface in contact is long-pending to be helped gluing the objectionable impuritiess such as cl ions that (suction) be attached to sand grain surface and dissolve in (suspension) entry; And the sand material all is to continue dispersive in the whole process that drops, and the objectionable impuritiess such as cl ions of sand grain surface can be had in time enough dissolving (suspension) entry; Simultaneously in the process of dropping, sand material surface is constantly washed away by the water of harmful substance contents such as low chlorine ion more, dissolving (suspension) speed that makes objectionable impuritiess such as cl ions sooner, more thorough.
The purpose that the return flow line parts that lead to flushing channel parts lower ends are set is to make full use of water resources, lets the water that refluxes flow into the flushing channel parts naturally.Carry sand process a certain amount of clean clear water of can carrying under one's arms; This part clear water with flow back to the return flow line parts after the sand material that cleaned separates; The return flow line part cross section is greater than the flushing channel part cross section; The upper shed of return flow line parts is higher than accumulated water and discharges knockdown export, makes return flow line side liquid level be higher than flushing channel side liquid level, and the differential water pressures of existence lets water flow in the flushing channel parts naturally.
Turbulent parts are set can strengthen cleaning performance: 1. sand grains rolls, slides on turbulent parts inclined-plane; Increased the rubbing effect of sand grains and sand grains, sand grains and water, objectionable impuritiess such as cl ions are broken away from sand grain surface dissolving (suspension) entry has promoter action preferably; 2. reduce the cross-sectional area of flushing channel, stop the sand material stream that drops to bring back to the accumulated water of high density in the low concentration region water, guarantee in flushing channel, from the bottom up, harmful substance contents such as cl ions is from low to high clocklike in the water; 3. change the flow direction of water and sand, let the channelling that interlocks of water and sand, to increase water to the friction of sand grain surface with wash away; 4. sand grains mobile speed on turbulent parts inclined-plane can be lower than its speed that drops in water, increases the sand material in the residence time of flushing channel, thereby has increased the time of objectionable impuritiess such as cl ions from the stripping of sand material.
The effect that this device cleans objectionable impuritiess such as cl ions in the extra large sand is obvious; Test-results shows; Under the situation that consumes very small amount fresh water just can chloride ion content above 0.13% extra large sand purify to chloride ion content less than 0.01%; The complete assembly floor space is few, the input cost of equipment is little, and running cost is low.
Description of drawings
Following accompanying drawing only purport not delimit the scope of the invention in the present invention being done schematic illustration and explanation.
Wherein,
Fig. 1: a kind of extra large sand convection current washing unit embodiment one of the present invention constitutes synoptic diagram;
Fig. 2: a kind of extra large sand convection current washing unit embodiment two of the present invention constitutes synoptic diagram;
The major parts nomenclature:
The turbulent parts of flushing channel parts (10) (11) sand holds collection parts (12) sand suction pipe road parts (13) return flow line parts (14) Sand pump parts (15) sand water sepn parts (16) clear water and adds parts (21) accumulated water discharge parts (22)
Sand opening for feed parts (31) sand discharge port parts (32)
Flushing channel side liquid level (41) return flow line side liquid level (42)
Solid arrow representes that sand flow moves direction (51) dotted arrow and representes water flows direction (52)
Embodiment
To understand in order technical characterictic of the present invention, purpose and effect being had more clearly, to contrast accompanying drawing at present and embodiment of the present invention is described with embodiment.
Embodiment one
As shown in Figure 1, for a kind of extra large sand convection current washing unit embodiment one of the present invention constitutes synoptic diagram.In this embodiment, extra large sand convection current washing unit comprises flushing channel parts (10), five turbulent parts (11), sand and holds that collection parts (12), sand suction pipe road parts (13), return flow line parts (14), Sand pump parts (15), sand water sepn parts (16), clear water add parts (21), an accumulated water is discharged parts (22), sand opening for feed parts (31), sand discharge port parts (32).
The perpendicular tower installation of sea sand convection current washing unit; Flushing channel parts (10) are logical with return flow line parts (14) lower ends; Return flow line parts (14) xsect is greater than flushing channel parts (10) xsect, and the upper shed of return flow line parts (14) is higher than accumulated water and discharges parts (22) outlet; Five turbulent parts (11) are set in the flushing channel parts (10), and five turbulent parts (11) are five ramp member, accumulated water is set in flushing channel parts (10) upper ends discharges parts (22) and sand opening for feed parts (31), lower end and sand is set holds and collect parts (12); Sand hold collection parts (12) lower end connect near clear water adding parts (21) and sand suction pipe road parts (13); Parts (13) are provided with Sand pump parts (15), the terminal sand discharge port parts (32) that connect in the sand suction pipe road; Sand discharge port parts (32) below is provided with sand water sepn parts (16); Solid arrow representes that sand flow moves direction (51), and dotted arrow is represented water flows direction (52).
During enforcement, the sand material of process pre-treatment (removing thick gravel, shell and clod etc.) joins flushing channel parts (10) from sand opening for feed parts (31), and gravitate holds collection parts (12) to sand from top to bottom and drops mobile; Add parts (21) from clear water and add an amount of clear water (but the adding a tree name of clear water adds the clear water of different amounts according to content of harmful such as muriate different building sand quality grade requirements or the different sand material are different); The sand water miscellany that initiate clear water and sand hold in the collection parts (12) is mixed; Sand water miscellany is suggested sand water sepn parts (16) through Sand pump parts (15), sand suction pipe road parts (13), sand discharge port parts (32); At sand water sepn parts (16); Sand material through cleaning becomes satisfactory building sand behind solid carbon dioxide, flow back into return flow line parts (14) and carry the water that sand carries under one's arms out from sand water sepn parts (16).
Because being higher than accumulated water, the upper shed of return flow line parts (14) discharges parts (22) outlet; Form return flow line side liquid level (42) and be higher than flushing channel side liquid level (41); Parts (14) flow into flushing channel parts (10) to the hydraulic pressure official post clear water that exists naturally from the return flow line, discharge parts (21) from accumulated water at last and discharge.
The water that the parts from the return flow line (14) flow into flushing channel parts (10) is upwards to flow from the lower end of flushing channel parts (10), with gravitate, the mobile sand material that drops has formed the convection current of flow direction contrary from top to bottom.The sand material be with the convection process of water in obtained cleaning: the sand material can disperse in convection current fully, blending; In the objectionable impuritiess such as muriate that contain in sand material dissolving (suspension) entry, content of harmful such as muriate is more and more lower from top to bottom in the sand material; And water is in the continuous cleaning process to the sand material, and harmful substance contents such as the muriate in the water are increasingly high from the bottom up.Can find out; The final stage of in flushing channel parts (10) lower end, just cleaning at the sand material; The sand material is that minimum with harmful substance contents such as muriates, the cleanest water cleans; From known dissolution with solvents solute rule, the ability of clean objectionable impuritiess such as its dissolving of water (suspension) cl ions more by force, also dissolving (suspension) must be thorough more; Moreover the harmful substance contents such as final cl ions that clean of sand material depend on the height of the harmful substance contents such as cl ions in the last wash phase institute water.So the final stage of cleaning sand material can use the minimum water of harmful substance contents such as cl ions to clean the very low sand material of harmful substance contents such as cl ions, the harmful substance contents such as cl ions of the sand material that obtains are minimum.
In this embodiment, for obtaining better cleaning performance, be provided with five turbulent parts (11), purpose is to make staggered mutually mobile, the dispersion of sand material and water, blending, and the speed that drops of having slowed down the sand material simultaneously is to obtain more scavenging period; Clear water adding parts (21) are arranged on sand and hold collection parts (12) lower end, enter the mouth near sand suction pipe road parts (13), and purpose is in putting forward the sand process, to dissolve residual objectionable impuritiess such as small amount of chloride with initiate clear water, to obtain cleaner sand material.
This device cleans the respond well of objectionable impurities such as cl ions in the extra large sand, and test-results shows, under the situation that consumes very small amount fresh water just can chloride ion content above 0.13% extra large sand purify to chloride ion content less than 0.01%.
Embodiment two
As shown in Figure 2, for a kind of extra large sand convection current washing unit embodiment two of the present invention constitutes synoptic diagram.In this embodiment, the device that cleans of extra large sand comprises two flushing channel parts (10), ten turbulent parts (11), sand and holds that collection parts (12), sand suction pipe road parts (13), return flow line parts (14), Sand pump parts (15), sand water sepn parts (16), clear water add parts (21), an accumulated water is discharged parts (21), sand opening for feed parts (31), sand discharge port parts (32).
Sea sand convection current washing unit is that vertical shaft type is installed; With the vertical shaft body as return flow line parts (14); Two flushing channel parts (10) are installed in the vertical shaft, promptly are mounted in the return flow line parts (14), and each flushing channel parts (10) lower ending opening communicates with vertical shaft; Return flow line parts (14) xsect is higher than accumulated water with, return flow line parts (14) upper shed and discharges parts (21) outlet greater than two flushing channel parts (10) xsect; In each flushing channel parts (10) five turbulent parts (11) are set, accumulated water spout member (22) and sand opening for feed parts (31), two flushing channel parts (10) below are set in each flushing channel parts (10) upper end a shared sand is set holds and collect parts (12); It is to be made up of funnel shaped vertical shaft shaft bottom that sand holds collection parts (12), and sand suction pipe road parts (13) and clear water inlet part (21) hold the interior bottom of collection parts (12) near being arranged on sand; Parts (13) are provided with Sand pump parts (15), the terminal sand discharge port parts (32) that connect in the sand suction pipe road, and sand discharge port parts (32) below is provided with sand water sepn parts (16); Solid arrow representes that sand flow moves direction (51), and dotted arrow is represented water flows direction (52).
During enforcement, the sand material of process pre-treatment (removing thick gravel, shell and clod etc.) adds flushing channel parts (10) from two sand opening for feed parts (31) respectively, and gravitate holds collection parts (12) to sand from top to bottom and drops mobile; Add parts (21) from clear water and add an amount of clear water (but the add-on a tree name of clear water is different and different according to content of harmful such as muriates different building sand grade specification of quality or the different sand material); The sand water miscellany that initiate clear water and sand hold in the collection parts (12) is mixed; Sand water miscellany is suggested sand water sepn parts (16) through Sand pump parts (15), sand suction pipe road parts (13), sand discharge port parts (32); At sand water sepn parts (16); Sand material through cleaning becomes satisfactory building sand behind solid carbon dioxide, flow back into return flow line parts (14) and carry the water that sand carries under one's arms out from sand water sepn parts (16).
Because being higher than accumulated water, the upper shed of return flow line parts (14) discharges parts (22) outlet; Form return flow line side liquid level (42) and be higher than flushing channel side liquid level (41); The hydraulic pressure official post clear water that exists flows into two flushing channel parts (41) respectively, discharges parts (21) from the accumulated water of each flushing channel parts (10) respectively at last and discharges.
In each flushing channel parts (10), the water that flows into flushing channel parts (10) is upwards to flow from the lower end of flushing channel parts (10), with gravitate, the mobile sand material that drops has formed the convection current of flow direction contrary from top to bottom.The sand material be with the convection process of water in obtained cleaning: the sand material can disperse in convection current fully, blending; In the objectionable impuritiess such as muriate that contain in sand material dissolving (suspension) entry, content of harmful such as muriate is more and more lower from top to bottom in the sand material; And water is in the continuous cleaning process to the sand material, and harmful substance contents such as the muriate in the water are increasingly high from the bottom up.Can find out; The final stage of in flushing channel parts (10) lower end, just cleaning at the sand material; The sand material is that minimum with harmful substance contents such as muriates, the cleanest water cleans; From known dissolution with solvents solute rule, the ability of clean objectionable impuritiess such as its dissolving of water (suspension) cl ions more by force, also dissolving (suspension) must be thorough more; Moreover the harmful substance contents such as final cl ions that clean of sand material depend on the height of the harmful substance contents such as cl ions in the last wash phase institute water.So the final stage of cleaning sand material can use the minimum water of harmful substance contents such as cl ions to clean the very low sand material of harmful substance contents such as cl ions, the harmful substance contents such as cl ions of the sand material that obtains are minimum.
In this embodiment; For obtaining better cleaning performance; Five turbulent parts (11) that each flushing channel parts (10) is provided with, purpose are to make staggered mutually mobile, the dispersion of sand material and water, blending, and the speed that drops of having slowed down the sand material simultaneously is to obtain enough scavenging periods; Clear water adding parts (21) are arranged on sand and hold collection parts (12) lower end, are provided with near sand suction pipe road parts (13), and purpose is in putting forward the sand process, to dissolve residual objectionable impuritiess such as small amount of chloride with initiate clear water, to obtain cleaner sand material.Be exactly in addition this preferred embodiment be provided with two shared return flow line parts of flushing channel parts, clear water add parts) or one carry the sand parts, sand holds the collection parts; Can reduce the input cost of complete assembly floor space, reduction equipment; Especially can improve the efficient of sand parts, practice thrift running cost.
This device cleans the respond well of objectionable impurities such as cl ions in the extra large sand, and test-results shows, under the situation that consumes very small amount fresh water just can chloride ion content above 0.13% extra large sand purify to chloride ion content less than 0.01%.
The above is merely the schematic embodiment of the present invention, is not to be to limit scope of the present invention.Any those skilled in the art, the equivalent variations of under the prerequisite that does not break away from design of the present invention and spirit, having done is revised, and all should belong to the scope of the present invention's protection.
Claims (10)
1. extra large sand convection current washing unit is characterized in that comprising: flushing channel parts, sand hold the collection parts, carry the sand parts, clear water adds parts, accumulated water is discharged parts, sand opening for feed parts, sand discharge port parts;
In the flushing channel component upper ends accumulated water being set discharges parts and with sand opening for feed parts, lower end sand is set and holds collection parts and clear water adding parts; Sand holds the connection of collection parts and carries the sand parts; Put forward the sand component ends sand discharge port parts are set;
Water adds parts from clear water and flows into the flushing channel parts; Upwards flow and discharge the parts discharge from accumulated water; The sand material adds from sand opening for feed parts; Gravitate disperses in water and down holds the collection parts to sand naturally and drop, and in flushing channel, has formed the convection current of flow direction contrary with the mobile clear water that makes progress, and the sand material has obtained cleaning in convection current.
2. extra large sand convection current washing unit as claimed in claim 1 is characterized in that: said flushing channel parts lower end is communicated with the return flow line parts.
3. extra large sand convection current washing unit as claimed in claim 1 is characterized in that: turbulent parts more than are set in the said flushing channel parts.
4. extra large sand convection current washing unit as claimed in claim 1 is characterized in that: said flushing channel is vertical shaft type or perpendicular tower installation.
5. extra large sand convection current washing unit as claimed in claim 1 is characterized in that: said clear water adds knockdown export and is provided with near carrying the sand component entry.
6. extra large sand convection current washing unit as claimed in claim 1 is characterized in that: said sand discharge port component ends below is provided with sand water sepn parts.
7. extra large sand convection current washing unit as claimed in claim 1 is characterized in that: the said sand parts of carrying are Sand pump parts and sand suction pipe road parts.
8. extra large sand convection current washing unit as claimed in claim 2 is characterized in that: the upper shed of said return flow line parts is higher than accumulated water and discharges knockdown export.
9. extra large sand convection current washing unit as claimed in claim 2 is characterized in that: said return flow line parts or clear water add parts or one carry sand parts or sand hold the collection parts can be shared by two above flushing channel parts.
10. extra large sand convection current washing unit as claimed in claim 3, it is characterized in that: said turbulent parts are a ramp member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101538357A CN102627421A (en) | 2011-05-28 | 2011-05-28 | Sea sand countercurrent elutriation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101538357A CN102627421A (en) | 2011-05-28 | 2011-05-28 | Sea sand countercurrent elutriation device |
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| CN102627421A true CN102627421A (en) | 2012-08-08 |
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| CN2011101538357A Pending CN102627421A (en) | 2011-05-28 | 2011-05-28 | Sea sand countercurrent elutriation device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826775A (en) * | 2012-09-07 | 2012-12-19 | 洪友景 | Centrifugal water injecting and purifying method and equipment for sea sand |
| CN102849971A (en) * | 2012-09-19 | 2013-01-02 | 杨兰钦 | Sea sand reflux purification method |
| CN107140858A (en) * | 2017-06-01 | 2017-09-08 | 华南理工大学 | The roundabout desalinator of sea sand |
| CN114455871A (en) * | 2021-12-01 | 2022-05-10 | 厦门市中砂科技有限公司 | Sea sand purification method |
| CN114716168A (en) * | 2021-08-17 | 2022-07-08 | 厦门市中砂科技有限公司 | Sea sand purification method |
-
2011
- 2011-05-28 CN CN2011101538357A patent/CN102627421A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826775A (en) * | 2012-09-07 | 2012-12-19 | 洪友景 | Centrifugal water injecting and purifying method and equipment for sea sand |
| CN102826775B (en) * | 2012-09-07 | 2014-02-12 | 洪友景 | Centrifugal water injecting and purifying method and equipment for sea sand |
| CN102849971A (en) * | 2012-09-19 | 2013-01-02 | 杨兰钦 | Sea sand reflux purification method |
| CN107140858A (en) * | 2017-06-01 | 2017-09-08 | 华南理工大学 | The roundabout desalinator of sea sand |
| CN114716168A (en) * | 2021-08-17 | 2022-07-08 | 厦门市中砂科技有限公司 | Sea sand purification method |
| CN114716168B (en) * | 2021-08-17 | 2024-05-17 | 厦门市中砂科技有限公司 | Sea sand purifying method |
| CN114455871A (en) * | 2021-12-01 | 2022-05-10 | 厦门市中砂科技有限公司 | Sea sand purification method |
| CN114455871B (en) * | 2021-12-01 | 2023-09-26 | 厦门市中砂科技有限公司 | Sea sand purifying method |
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Application publication date: 20120808 |