CN101966583A - Superfine powder grading device and method thereof for grading superfine powder - Google Patents
Superfine powder grading device and method thereof for grading superfine powder Download PDFInfo
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- CN101966583A CN101966583A CN 201010516528 CN201010516528A CN101966583A CN 101966583 A CN101966583 A CN 101966583A CN 201010516528 CN201010516528 CN 201010516528 CN 201010516528 A CN201010516528 A CN 201010516528A CN 101966583 A CN101966583 A CN 101966583A
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- 239000000843 powder Substances 0.000 title claims abstract description 99
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000007599 discharging Methods 0.000 claims abstract description 89
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 230000000694 effects Effects 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 39
- 239000012530 fluid Substances 0.000 claims description 36
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 31
- 239000010946 fine silver Substances 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000008187 granular material Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 238000006722 reduction reaction Methods 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010332 dry classification Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- AYKOTYRPPUMHMT-UHFFFAOYSA-N silver;hydrate Chemical compound O.[Ag] AYKOTYRPPUMHMT-UHFFFAOYSA-N 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
- 238000010333 wet classification Methods 0.000 description 1
Abstract
The invention discloses a superfine powder grading device, comprising a grading main device, a container, a filter screen, a pump and a liquid storage tank. The grading main device comprises a charging pipeline, a horizontal pipeline and a discharging pipeline, which are connected in order; the container is located below a liquid outlet of a discharging bent pipe of the discharging pipeline; the filter screen is horizontally arranged in the container; a liquid inlet of the pump is connected with a liquid outlet of the container through a pipeline while a liquid outlet thereof is communicated with the liquid storage tank through a liquid transportation pipe; a liquid outlet of the liquid transportation pipe is located above the liquid storage tank; and a liquid outlet of the liquid storage tank is communicated with the upper end of a charging vertical pipe of the charging pipeline. The method for grading the superfine powder by using the superfine powder grading device has apparent grading effect.
Description
Technical field
The present invention relates to a kind of grading plant of superfine powder and the method for superfine powder being carried out classification thereof.
Background technology
Superfine powder is meant yardstick between molecule, and between atom and the bulk material, micron and nano level small solid particle comprise multiple material granules such as metal, nonmetal, organic and inorganic and biology.In recent years, superfine powder grows up gradually, becomes the emphasis of various countries' research day by day.Except that having common silver powder the premium properties of aspects such as electricity, heat, magnetic, also have the character of general superfine powder such as super fine silver powder, promptly diameter of particle is little, specific area is big, surperficial residual charge is many, surface tension big, unit can be high than table.In fields such as electronics, catalysis, optics very big potential using value is arranged., specific area little because of size such as superfine cupper powder is big, favorable conductive and heat conductivility and relative cheap price, in electronics, pottery, electrocondution slurry, microelectronics industry, have widely and to use, be considered to substitute one of optional metal of precious metal material such as silver.
The preparation method of micron and nano level superfine powder is a lot.The prerequisite that the superfine powder of the whole bag of tricks gained obtains industrial-scale production and application is to have suitable method that the gained powder is carried out classification.At present, the existing report of the stage division of superfine powder can be divided into dry classification, wet classification and overcritical classification according to the state of minute stage material.According to the difference in the classification field of force, can be divided into gravitational field classification, centrifugal force field classification, inertial force field classification, electric field force classification, magnetic field force classification, the classification of the thermal gradient field of force and chromatogram classification etc. again.According to the different qualities of superfine powder, utilize the various suitable field of forces that superfine powder is carried out effective classification, so that obtain the raw material of different-grain diameter.
Wherein, by the synthetic superfine powder of chemical reduction method, do not find economically viable plant-scale stage division always.Chinese patent literature CN1817524A has announced the solid-liquid separating method that a kind of liquid phase reduction relates to when preparing nano-silver powder, and it separates with traditional gravitational settling or vacuum filtration process and obtains nano-silver powder.Chinese patent literature CN101185972A adopts the method for cyclonic separation that super fine silver powder is carried out classification.Adopt these two kinds of methods that superfine powder is carried out before the classification, all need to handle, agglomeration very easily takes place, be unfavorable for classification through following process such as super-dries by the synthetic superfine powder of chemical reduction method.
During being published in " the hydraulic method classification research of copper superfine powder " literary composition on " Rare Metals Materials and engineering " in April, 2009, the inventor told about the principle of hydraulic method classification superfine powder, but the unexposed concrete grammar that how to increase pressure.If the position at U type pipe 3 places that it is shown in Figure 1 is as the tube of flexibility, it is poor to regulate liquid level, and the height that must manually raise or reduce the position at U type pipe position, 1 place or 2 places is realized, thereby can't be realized the serialization operation.
Summary of the invention
The purpose of this invention is to provide a kind of outstanding effect superfine powder is carried out the device of classification and the method for superfine powder being carried out classification thereof.
The technical scheme that realizes the object of the invention is that a kind of superfine powder grading plant comprises the main device of classification, container, filter screen, pump and reservoir; The main device of classification comprises feeding pipe, horizontal pipeline and the discharging pipeline that links to each other successively;
Feeding pipe comprises charging vertical tube and first-class metered valve; The upper end of charging vertical tube is opened wide, and first-class metered valve is arranged on the charging vertical tube, and is positioned at the top of charging vertical tube;
Horizontal pipeline comprises the horizontal tube and second flow valve; The right-hand member of horizontal tube is connected with the lower end of charging vertical tube is airtight; Second flow valve is arranged on the horizontal tube, and is positioned at the left part of horizontal tube;
The discharging pipeline comprises discharging vertical tube and discharging bend pipe; The upper end of discharging vertical tube is opened wide, and the lower end of discharging vertical tube is connected with the left end of horizontal tube is airtight; The right-hand member head of discharging bend pipe links to each other with the top of discharging vertical tube is airtight, and the left end head of discharging bend pipe bends downwards, the mouth of pipe down, and this mouth of pipe is a liquid outlet;
Container is positioned at the below of liquid outlet of the discharging bend pipe of discharging pipeline; The filter screen level frame is located at the inside of container; The inlet of pump links to each other with the liquid outlet of container by pipeline, and the liquid outlet of pump is connected with reservoir by woven hose, and the liquid outlet of woven hose is positioned at the top of reservoir; The liquid outlet of reservoir is connected by the upper end of pipeline with the charging vertical tube of feeding pipe.
Above-mentioned horizontal pipeline also comprises second charging aperture; Right part and opening that second charging aperture is positioned at horizontal tube make progress, and second charging aperture is provided with piston.
Above-mentioned horizontal pipeline also comprises second discharging opening; Second discharging opening is positioned at the left end of horizontal tube and Open Side Down, is provided with valve at the second discharging opening place.
The liquid outlet place, bottom of above-mentioned reservoir is provided with valve switch.
A kind of superfine powder grading plant has following steps to the method that superfine powder carries out classification:
1. the superfine powder that will be prepared from by the reduction protection method adds the horizontal tube from second charging aperture of horizontal pipeline, and piston makes that second charging aperture is airtight beyond the Great Wall;
2. make the fluid in the reservoir flow in the charging vertical tube of feeding pipe,, make liquid level difference in feeding pipe and the discharging pipeline between 0.1m to 0.3m by regulating the flow control component of the first-class metered valve and second flow valve; Thereby under the pressure effect of fluid, the less powder of part particle diameter suspends, and rises with fluid, and the powder that particle diameter is bigger slowly sinks to the bottom, the powder rate of climb that particle diameter is more little in the powder that suspends is fast more, and powder and fluid are together discharged from the discharging bend pipe of discharging pipeline;
3. receive the powder of discharging in the discharging bend pipe and the mixture of fluid by container, mixture is during through the filter screen in the container, and superfine powder wherein and fluid carry out Separation of Solid and Liquid, superfine powder is stayed on the filter screen, fluid is by filter screen, and the pipeline of flowing through is pressurizeed by pump, is transported in the reservoir;
4. along with the continuous operation of whole system, fluid wherein constantly circulates between the main device of classification, container, pump and reservoir, change container at set intervals No. one time, collect the superfine powder of different time sections, the superfine powder particle diameter of initial collection is less, the particle diameter of the superfine powder of more backward collecting is big more, and the excessive powder of particle diameter is not discharged the main device of classification with fluid, thereby realizes the classification to superfine powder.
Above-mentioned steps 1. in, the superfine powder that adds horizontal tube is the ultra-fine silver powder; Step 2. in, the fluid that flows out from reservoir is that density is 1g/cm
3Water; Step 2. in, the liquid level difference in feeding pipe of being controlled and the discharging pipeline is 0.15m, thereby makes that particle diameter is that the ultra-fine silver powder of 20 ~ 150 μ m is discharged from the discharging bend pipe of discharging pipeline, and carries out classification.
Above-mentioned steps 1. in, the superfine powder that adds horizontal tube is the ultra-fine silver powder; Step 2. in, the fluid that flows out from reservoir is that density is 1.2551g/cm
3Glycerine, step 2. in, the liquid level difference in feeding pipe of being controlled and the discharging pipeline is 0.15m, thereby makes that particle diameter is that the ultra-fine silver powder of 50 ~ 220 μ m is discharged from the discharging bend pipe of discharging pipeline, and carries out classification.
Above-mentioned steps 1. in, the superfine powder that adds horizontal tube is the ultra-fine silver powder; Step 2. in, the fluid that flows out from reservoir is that density is 0.79g/cm
3Alcohol, step 2. in, the liquid level difference in feeding pipe of being controlled and the discharging pipeline is 0.15m, thereby makes that particle diameter is that the ultra-fine silver powder of 10 ~ 90 μ m is discharged from the discharging bend pipe of discharging pipeline, and carries out classification.
The present invention has positive effect: (1) superfine powder grading plant of the present invention is simple in structure, but continuous operation is with low cost, and no dust pollution, and clean environmental protection is easy to utilize, realizes the commercial scale classification easily.(2) method that superfine powder is carried out classification of the present invention utilizes the pressure of fluid to make powder granule suspend, and rises with fluid and together overflows.Because the superfine powder particle is very little, in classification process, can suppose that the flow field is to be undertaken by laminar condition, powder granule is spherical in shape, is free settling in fluid media (medium).During free settling, sinking speed increases powder granule gradually in fluid media (medium), and meanwhile suffered resistance also increases, thereby the free settling acceleration also reduces gradually.When the resistance of fluid media (medium) equaled the gravity of particle, its sedimentation acceleration was zero, and it is constant that sinking speed keeps.This constant speed is referred to as the terminal velocity of powder granule.Certain when the material of classification, as to be adopted fluid media (medium) one timing, terminal velocity is only relevant with the diameter of powder granule.So the powder granule that particle diameter is bigger slowly sinks to the bottom, the powder granule rate of climb that particle diameter is more little in the powder granule of suspension is fast more.The method is used for the classification of the superfine powder that is prepared from by chemical reduction method, has removed the dry processing treatment process that waits from, has effectively avoided particle that agglomeration takes place in these operations, and grading effect is obvious.
Description of drawings
Fig. 1 is the structural representation of superfine powder grading plant of the present invention.
The mark of above-mentioned accompanying drawing is as follows:
The main device 10 of classification,
Feeding pipe 1, charging vertical tube 11, first-class metered valve 12,
Horizontal pipeline 2, horizontal tube 21, the second charging apertures 22, piston 22-1, second flow valve, 23, the second discharging openings 24,
Discharging pipeline 3, discharging vertical tube 31, discharging bend pipe 32,
Container 4, filter screen 5, pump 6, reservoir 7, switch 71.
The specific embodiment
(embodiment 1)
See Fig. 1, a kind of superfine powder grading plant of present embodiment comprises the main device 10 of classification, container 4, filter screen 5, pump 6 and reservoir 7.The main device 10 of classification comprises feeding pipe 1, horizontal pipeline 2 and the discharging pipeline 3 that links to each other successively.
Feeding pipe 1 comprises charging vertical tube 11 and first-class metered valve 12.The upper end of charging vertical tube 11 is opened wide, and first-class metered valve 12 is arranged on the pipeline of charging vertical tube 11, and is positioned at the top of charging vertical tube 11.
Horizontal pipeline 2 comprises horizontal tube 21, second charging aperture 22, second flow valve 23 and second discharging opening 24.The right-hand member of horizontal tube 21 is connected with the lower end of charging vertical tube 11 is airtight.Right part and opening that second charging aperture 22 is positioned at horizontal tube 21 make progress.Second charging aperture 22 is provided with piston 22-1.Second flow valve 23 is arranged on the pipeline of horizontal tube 21, and is positioned at the left part of horizontal tube 21.Second discharging opening 24 is positioned at the left end of horizontal tube 21 and Open Side Down, and 24 places are provided with valve at second discharging opening.
Discharging pipeline 3 comprises discharging vertical tube 31 and discharging bend pipe 32.The upper end of discharging vertical tube 31 is opened wide, and the lower end of discharging vertical tube 31 is connected with the left end of horizontal tube 21 is airtight.The right-hand member head of discharging bend pipe 32 links to each other with the top of discharging vertical tube 31 is airtight, and the left end head of discharging bend pipe 32 bends downwards, the mouth of pipe down, and this mouth of pipe is the liquid outlet as first discharging opening.
Container 4 is positioned at the below of liquid outlet of the discharging bend pipe 32 of discharging pipeline 3.Filter screen 5 level frames are located at the inside of container 4.The inlet of pump 6 links to each other by the liquid outlet of pipeline with container 4, and the liquid outlet of pump 6 is connected with reservoir 7 by woven hose, and the liquid outlet of woven hose is positioned at the top of reservoir 7.The liquid outlet place of reservoir 7 is provided with switch 71, and the liquid outlet of reservoir 7 is connected by the upper end of pipeline with the charging vertical tube 11 of feeding pipe 1, thereby forms the circulatory system of a fluid.
The method that a kind of superfine powder grading plant of present embodiment carries out classification to ultra-fine split has following steps:
1., the ultra-fine silver powder that will be prepared from by reducing process protection (wherein particle diameter be the powder of 20 ~ 150 μ m account for total amount about 90%) add the horizontal tubes 21 from second charging aperture 22 of horizontal pipeline 2, piston 22-1 makes that second charging aperture 22 is airtight beyond the Great Wall.The fluid that flows out from reservoir 7 is that density is 1g/cm
3Water.
2. open the switch 71 of reservoir 7, make the water in the reservoir 7 flow in the charging vertical tube 11 of feeding pipe 1, by regulating the flow control component of the first-class metered valve 12 and second flow valve 23, make that the liquid level difference in feeding pipe 1 and the discharging pipeline 3 is controlled at 0.15m generation pressure differential accurately.Thereby under the pressure effect of fluid, the less powder of a part of particle diameter suspends, and with liter waterborne, the powder that particle diameter is bigger slowly sinks to the bottom, and the powder rate of climb that particle diameter is more little in the powder of suspension is fast more.Powder and water are together discharged from the discharging bend pipe 32 of discharging pipeline 3.
3. receive the powder of discharging in the discharging bend pipes 32 and the mixture of water by container 4, mixture is during through the filter screen 5 in the container 4, and wherein ultra-fine silver powder and water carry out Separation of Solid and Liquid, the ultra-fine silver powder is stayed on the filter screen 5, water is by filter screen 5, and the pipeline of flowing through is transported in the reservoir 7 by pump 6 pressurizations.
4. along with the continuous operation of whole system, water wherein constantly circulates between the main device 10 of classification, container 4, pump 6 and reservoir 7, change a container 4 every 5min, collect altogether three times, the particle diameter of the ultra-fine silver powder of collecting is less than the particle diameter of the ultra-fine silver powder of collecting for the second time for the first time, the particle diameter of the ultra-fine silver powder of collecting is less than the particle diameter of the ultra-fine silver powder of collecting for the third time for the second time, thereby make that particle diameter is that the ultra-fine silver powder of 20 ~ 150 μ m is discharged from the discharging bend pipe 32 of discharging pipeline 3, and carry out classification roughly.The ultra-fine silver powder that particle diameter is bigger sinks to the bottom of horizontal pipeline 2, does not discharge the main device 10 of classification with fluid, can powder be discharged by opening the valve of second discharging opening 24.
(embodiment 2)
The remainder of present embodiment is identical with embodiment 1, and difference is: the ultra-fine silver powder that step will be prepared from by reducing process protection in 1. (wherein particle diameter be the powder of 50 ~ 220 μ m account for total amount about 85%) add the horizontal tubes 21 from second charging aperture 22 of horizontal pipeline 2.Step 2. in, the fluid that flows out from reservoir 7 is that density is 1.2251g/cm
3Glycerine, thereby make that particle diameter is that the ultra-fine silver powder of 50 ~ 220 μ m is discharged from the discharging bend pipe 32 of discharging pipeline 3, and carry out classification roughly.
(embodiment 3)
The remainder of present embodiment is identical with embodiment 1, and difference is: the ultra-fine silver powder that step will be prepared from by reducing process protection in 1. (wherein particle diameter be the powder of 10 ~ 90 μ m account for total amount about 90%) add the horizontal tubes 21 from second charging aperture 22 of horizontal pipeline 2.Step 2. in, the fluid that flows out from reservoir 7 is that density is 0.79g/cm
3Alcohol, thereby make that particle diameter is that the ultra-fine silver powder of 10 ~ 90 μ m is discharged from the discharging bend pipe 32 of discharging pipeline 3, and carry out classification roughly.
Claims (8)
1. a superfine powder grading plant is characterized in that: comprise the main device of classification (10), container (4), filter screen (5), pump (6) and reservoir (7); The main device of classification (10) comprises feeding pipe (1), horizontal pipeline (2) and the discharging pipeline (3) that links to each other successively;
Feeding pipe (1) comprises charging vertical tube (11) and first-class metered valve (12); The upper end of charging vertical tube (11) is opened wide, and first-class metered valve (12) is arranged on the charging vertical tube (11), and is positioned at the top of charging vertical tube (11);
Horizontal pipeline (2) comprises horizontal tube (21) and second flow valve (23); The airtight connection of lower end of the right-hand member of horizontal tube (21) and charging vertical tube (11); Second flow valve (23) is arranged on the horizontal tube (21), and is positioned at the left part of horizontal tube (21);
Discharging pipeline (3) comprises discharging vertical tube (31) and discharging bend pipe (32); The upper end of discharging vertical tube (31) is opened wide, the airtight connection of left end of the lower end of discharging vertical tube (31) and horizontal tube (21); Airtight the linking to each other of top of the right-hand member head of discharging bend pipe (32) and discharging vertical tube (31), the left end head of discharging bend pipe (32) bends downwards, the mouth of pipe down, and this mouth of pipe is a liquid outlet;
Container (4) is positioned at the below of liquid outlet of the discharging bend pipe (32) of discharging pipeline (3); Filter screen (5) level frame is located at the inside of container (4); The inlet of pump (6) links to each other by the liquid outlet of pipeline with container (4), and the liquid outlet of pump (6) is connected with reservoir (7) by woven hose, and the liquid outlet of woven hose is positioned at the top of reservoir (7); The liquid outlet of reservoir (7) is connected by the upper end of pipeline with the charging vertical tube (11) of feeding pipe (1).
2. according to the described superfine powder grading plant of claim 1, it is characterized in that: described horizontal pipeline (2) also comprises second charging aperture (22); Right part and opening that second charging aperture (22) is positioned at horizontal tube (21) make progress, and second charging aperture (22) is provided with piston (22-1).
3. according to the described superfine powder grading plant of claim 2, it is characterized in that: described horizontal pipeline (2) also comprises second discharging opening (24); Second discharging opening (24) is positioned at the left end of horizontal tube (21) and Open Side Down, locates to be provided with valve at second discharging opening (24).
4. according to the described superfine powder grading plant of claim 2, it is characterized in that: the liquid outlet place, bottom of described reservoir (7) is provided with valve switch (71).
One kind by the described superfine powder grading plant of claim 2 to the method that superfine powder carries out classification, it is characterized in that having following steps:
1. the superfine powder that will be prepared from by the reduction protection method adds the horizontal tube (21) from second charging aperture (22) of horizontal pipeline (2), and piston (22-1) makes that second charging aperture (22) is airtight beyond the Great Wall;
2. make the fluid in the reservoir (7) flow in the charging vertical tube (11) of feeding pipe (1), by regulating the flow control component of first-class metered valve (12) and second flow valve (23), make liquid level difference in feeding pipe (1) and the discharging pipeline (3) between 0.1m to 0.3m; Thereby under the pressure effect of fluid, the less powder of part particle diameter suspends, and rises with fluid, and the powder that particle diameter is bigger slowly sinks to the bottom, the powder rate of climb that particle diameter is more little in the powder that suspends is fast more, and powder and fluid are together discharged from the discharging bend pipe (32) of discharging pipeline (3);
3. receive the powder of discharge in the discharging bend pipe (32) and the mixture of fluid by container (4), mixture is during through the filter screen (5) in container (4), superfine powder wherein and fluid carry out Separation of Solid and Liquid, superfine powder is stayed on the filter screen (5), fluid is by filter screen (5), flow through pipeline by pump (6) pressurization, be transported in the reservoir (7);
4. along with the continuous operation of whole system, fluid wherein constantly circulates between the main device of classification (10), container (4), pump (6) and reservoir (7), change a container (4) at set intervals, collect the superfine powder of different time sections, the superfine powder particle diameter of initial collection is less, the particle diameter of the superfine powder of more backward collecting is big more, and the excessive powder of particle diameter is not discharged the main device of classification (10) with fluid, thereby realizes the classification to superfine powder.
6. according to the described method that superfine powder is carried out classification of claim 5, it is characterized in that: step 1. in, the superfine powder that adds horizontal tube (21) is the ultra-fine silver powder; Step 2. in, the fluid that flows out from reservoir (7) is that density is 1g/cm
3Water; Step 2. in, the liquid level difference in feeding pipe of being controlled (1) and the discharging pipeline (3) is 0.15m, thereby makes that particle diameter is that the ultra-fine silver powder of 20 ~ 150 μ m is discharged from the discharging bend pipe (32) of discharging pipeline (3), and carries out classification.
7. according to the described method that superfine powder is carried out classification of claim 5, it is characterized in that: step 1. in, the superfine powder that adds horizontal tube (21) is the ultra-fine silver powder; Step 2. in, the fluid that flows out from reservoir (7) is that density is 1.2551g/cm
3Glycerine, step 2. in, the liquid level difference in feeding pipe of being controlled (1) and the discharging pipeline (3) is 0.15m, thereby makes that particle diameter is that the ultra-fine silver powder of 50 ~ 220 μ m is discharged from the discharging bend pipe (32) of discharging pipeline (3), and carries out classification.
8. according to the described method that superfine powder is carried out classification of claim 5, it is characterized in that: step 1. in, the superfine powder that adds horizontal tube (21) is the ultra-fine silver powder; Step 2. in, the fluid that flows out from reservoir (7) is that density is 0.79g/cm
3Alcohol, step 2. in, the liquid level difference in feeding pipe of being controlled (1) and the discharging pipeline (3) is 0.15m, thereby makes that particle diameter is that the ultra-fine silver powder of 10 ~ 90 μ m is discharged from the discharging bend pipe (32) of discharging pipeline (3), and carries out classification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105165286A CN101966583B (en) | 2010-10-24 | 2010-10-24 | Superfine powder grading device and method thereof for grading superfine powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105165286A CN101966583B (en) | 2010-10-24 | 2010-10-24 | Superfine powder grading device and method thereof for grading superfine powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101966583A true CN101966583A (en) | 2011-02-09 |
| CN101966583B CN101966583B (en) | 2012-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105165286A Expired - Fee Related CN101966583B (en) | 2010-10-24 | 2010-10-24 | Superfine powder grading device and method thereof for grading superfine powder |
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| CN (1) | CN101966583B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479910A (en) * | 2018-03-26 | 2018-09-04 | 苏州富博宏新材料科技有限公司 | A kind of production method for aluminium powder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4640768A (en) * | 1983-06-29 | 1987-02-03 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation - S.N.E.C.M.A. | Elutriation apparatus for the purification and separation of powders of different densities |
| JPH02122008A (en) * | 1988-10-31 | 1990-05-09 | Tokin Corp | Apparatus for manufacturing metal powder |
| CN1250700A (en) * | 1998-10-14 | 2000-04-19 | 沈力 | Technology and equipment for mfg. magnesium powder |
-
2010
- 2010-10-24 CN CN2010105165286A patent/CN101966583B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4640768A (en) * | 1983-06-29 | 1987-02-03 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation - S.N.E.C.M.A. | Elutriation apparatus for the purification and separation of powders of different densities |
| JPH02122008A (en) * | 1988-10-31 | 1990-05-09 | Tokin Corp | Apparatus for manufacturing metal powder |
| CN1250700A (en) * | 1998-10-14 | 2000-04-19 | 沈力 | Technology and equipment for mfg. magnesium powder |
Non-Patent Citations (1)
| Title |
|---|
| 《稀有金属材料与工程》 20090430 陶蓉等 铜超细粉体的液压法分级研究 209-212 1-8 第38卷, 2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479910A (en) * | 2018-03-26 | 2018-09-04 | 苏州富博宏新材料科技有限公司 | A kind of production method for aluminium powder |
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| CN101966583B (en) | 2012-04-18 |
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