CN104493157A - Nano nickel powder dry dispersion method - Google Patents
Nano nickel powder dry dispersion method Download PDFInfo
- Publication number
- CN104493157A CN104493157A CN201410786360.9A CN201410786360A CN104493157A CN 104493157 A CN104493157 A CN 104493157A CN 201410786360 A CN201410786360 A CN 201410786360A CN 104493157 A CN104493157 A CN 104493157A
- Authority
- CN
- China
- Prior art keywords
- ball valve
- powder
- recovering hopper
- lower ball
- nickel powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000000843 powder Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000006185 dispersion Substances 0.000 title claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 230000009897 systematic effect Effects 0.000 claims description 11
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- 239000011229 interlayer Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000009833 condensation Methods 0.000 abstract description 3
- 230000005494 condensation Effects 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000002918 waste heat Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
Abstract
A nano nickel powder dry dispersion method includes 1, closing a lower ball valve of a collection hopper, evacuating the collection hopper before opening the lower ball valve of the system collection device for 2 to 3min, and closing the lower ball valve of the system collection device when no powder falls; 2, opening an emptying valve of the collection device before opening an air incoming valve of the collection device, starting stirring, and feeding the air slowly and constantly for 30 to 60min; 3, opening the lower ball valve of the collecting hopper, and collecting the nickel powder. The collection hopper is adopted, the waste heat of the powder can be produced by the physical gas phase condensation and evaporation process, energy can be distributed reasonably, and the energy usage is saved effectively; the air incoming valve is adopted for ventilation, proper stirring is performed, heat can be radiated more rapidly, large amount of oxygen is prevented from entering through the slow free ventilation manner, and the powder is sintered; the process parameters are adjusted conveniently, the subsequent processing process is simple, and cost is low.
Description
Technical field
The present invention relates to a kind of dispersion of nano material, the stable technology deposited, be specifically related to a kind of method of abundant dispersing nanometer level nickel powder, belong to nanosecond science and technology field.
Background technology
Along with the develop rapidly that consumer electronics updates, quick consumption electronic product, gradually towards intelligent, miniaturization transfer, also strides forward to more small particle diameter direction gradually as the manufacture of multilayer ceramic capacitor internal electrode and the raw-material metal-powder nickel powder of electronic component thereof.Because 200nm and following ultrafine nanometer nickel powder have larger specific area and higher specific surface energy, very easily there is agglomeration during dispersion in media as well.
Summary of the invention
The present invention is directed to the defect very easily occurring when the ultrafine nanometer nickel powder proposed in above-mentioned analysis and prior art disperses in media as well to reunite, research and design goes out a kind of method of nanoscale nickel powder dry dispersion, its object is to: adopt physical vapor using vaporization condensation process to make nanoscale nickel powder, get in powder process in collection, by the nanoscale nickel powder of high temperature carrying out pre-oxidation with slow cooling in the closed container of Water-cooling circulating, nickel powder powder cooled and surface forms nickel oxide to reach the effect of fully dispersion.
Technical solution of the present invention:
A method for nanoscale nickel powder dry dispersion, is characterized in that: comprise the following steps:
(1) put the powder stage: ball valve under closedown recovering hopper, open the lower ball valve 2 ~ 3min of systematic collection device after recovering hopper device is vacuumized, the lower ball valve of shutdown system gathering-device when falling without powder;
(2) in the pre-oxidation stage: the intake valve opening recovering hopper device after opening the atmospheric valve of recovering hopper device again, start and stir, continuing at a slow speed to pass into air is 30 ~ 60min;
(3) receive the powder stage: the lower ball valve opening recovering hopper device, carry out collecting nickel powder.
Recovering hopper device top in described step () is connected with the lower ball valve of systematic collection device, and the bottom of recovering hopper device installs baiting valve additional, forms a closed container.
In described step (), the skin of recovering hopper device is stainless steel water interlayer, is cooled by the bottom in and top out of current.
Beneficial effect of the present invention: the present invention, by improving the dispersiveness of nanoscale nickel powder to recovering hopper device pre-oxidation mode, has following remarkable advantage:
1) adopt recovering hopper device, physical vapor using vaporization condensation process effectively can be utilized to obtain the remaining temperature of powder, realize the reasonable distribution of energy, effectively saved energy use;
2) adopt intake valve ventilation, and be equipped with agitation as appropriate, not only make heat volatilize faster, free scavenging way at a slow speed also avoids oxygen to enter in a large number, sintering powder;
3) technical arrangement plan is convenient, and subsequent treatment process is simple, and cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of systematic collection device and recovering hopper device in the present invention
Ball valve under 1-systematic collection device, 2-lower ball valve, 3-atmospheric valve, 4-intake valve, 5-agitating device, 6-recovering hopper;
Fig. 2 is the scanning electron microscope (SEM) photograph that the nanoscale nickel powder of recovering hopper systematic collection in embodiment 1 scrapes slurry;
Fig. 3 is the scanning electron microscope (SEM) photograph that the nanoscale nickel powder of recovering hopper systematic collection in embodiment 2 scrapes slurry;
Fig. 4 is the scanning electron microscope (SEM) photograph that the nanoscale nickel powder of recovering hopper systematic collection in embodiment 3 scrapes slurry.
Detailed description of the invention
Embodiment 1
(1) put the powder stage: ball valve under closedown recovering hopper, open lower ball valve 2 min of systematic collection device after recovering hopper device is vacuumized, the lower ball valve of shutdown system gathering-device when falling without powder;
(2) in the pre-oxidation stage: the intake valve opening half-open recovering hopper device again after the atmospheric valve of recovering hopper device completely, start agitating device and stir, continue at a slow speed to pass into air 30 min;
(3) the powder stage is received: open ball valve under recovering hopper, carry out collecting nickel powder.
Embodiment 2
(1) put the powder stage: ball valve under closedown recovering hopper, open lower ball valve about 2.5 min of systematic collection device after recovering hopper device is vacuumized, the lower ball valve of shutdown system gathering-device when falling without powder;
(2) in the pre-oxidation stage: the intake valve of half-open recovering hopper device again after the atmospheric valve of half-open recovering hopper device, start agitating device and stir, continue at a slow speed to pass into air 45 min;
(3) the powder stage is received: open ball valve under recovering hopper, carry out collecting nickel powder.
Embodiment 3
(1) put the powder stage: ball valve under closedown recovering hopper, the lower ball valve opening systematic collection device after vacuumizing recovering hopper device is about 2min, until when falling without powder, and the lower ball valve of shutdown system gathering-device;
(2) in the pre-oxidation stage: the intake valve opening recovering hopper device after the atmospheric valve of half-open recovering hopper device more completely, start agitating device and stir, continue at a slow speed to pass into air 60min;
(3) the powder stage is received: open ball valve under recovering hopper, carry out collecting nickel powder.
As can be seen from Fig. 2,3,4, the nickel powder agglomerated particle that embodiment 1,2,3 obtains is little, favorable dispersibility, and this technical arrangement plan is convenient, and subsequent treatment process is simple, and cost is low, is applicable to large-scale industrial production application.
Claims (3)
1. a method for nanoscale nickel powder dry dispersion, is characterized in that: comprise the following steps:
(1) put the powder stage: ball valve under closedown recovering hopper, open the lower ball valve 2 ~ 3min of systematic collection device after recovering hopper device is vacuumized, the lower ball valve of shutdown system gathering-device when falling without powder;
(2) in the pre-oxidation stage: the intake valve opening recovering hopper device after opening the atmospheric valve of recovering hopper device again, start and stir, continuing at a slow speed to pass into air is 30 ~ 60min;
(3) receive the powder stage: the lower ball valve opening recovering hopper device, carry out collecting nickel powder.
2. the method for a kind of nanoscale nickel powder dry dispersion as claimed in claim 1, it is characterized in that: the recovering hopper device top in described step () is connected with the lower ball valve of systematic collection device, the bottom of recovering hopper device installs baiting valve additional, forms a closed container.
3. the method for a kind of nanoscale nickel powder dry dispersion as claimed in claim 1, is characterized in that: in described step (), the skin of recovering hopper device is stainless steel water interlayer, is cooled by the bottom in and top out of current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410786360.9A CN104493157A (en) | 2014-12-18 | 2014-12-18 | Nano nickel powder dry dispersion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410786360.9A CN104493157A (en) | 2014-12-18 | 2014-12-18 | Nano nickel powder dry dispersion method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104493157A true CN104493157A (en) | 2015-04-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410786360.9A Pending CN104493157A (en) | 2014-12-18 | 2014-12-18 | Nano nickel powder dry dispersion method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104493157A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101015861A (en) * | 2006-11-09 | 2007-08-15 | 昆山密友实业有限公司 | Continuous production apparatus for nano metal powder |
| CN101474672A (en) * | 2007-12-31 | 2009-07-08 | 王志平 | Device for continuously inactivating metal nano powder |
| CN101927352A (en) * | 2010-09-21 | 2010-12-29 | 李立明 | Novel technology for continuously producing nano powder by using ultra-high temperature plasma and preparation process thereof |
| CN202343938U (en) * | 2011-12-14 | 2012-07-25 | 华中科技大学 | Continuous manufacturing and original-position wrapping device for metal nanometer materials apt to be oxidized |
| CN102921951A (en) * | 2012-01-09 | 2013-02-13 | 佛山市顺德宇红纳米科技有限公司 | Nano-powder and graded preparation device of dispersing liquid thereof |
-
2014
- 2014-12-18 CN CN201410786360.9A patent/CN104493157A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101015861A (en) * | 2006-11-09 | 2007-08-15 | 昆山密友实业有限公司 | Continuous production apparatus for nano metal powder |
| CN101474672A (en) * | 2007-12-31 | 2009-07-08 | 王志平 | Device for continuously inactivating metal nano powder |
| CN101927352A (en) * | 2010-09-21 | 2010-12-29 | 李立明 | Novel technology for continuously producing nano powder by using ultra-high temperature plasma and preparation process thereof |
| CN202343938U (en) * | 2011-12-14 | 2012-07-25 | 华中科技大学 | Continuous manufacturing and original-position wrapping device for metal nanometer materials apt to be oxidized |
| CN102921951A (en) * | 2012-01-09 | 2013-02-13 | 佛山市顺德宇红纳米科技有限公司 | Nano-powder and graded preparation device of dispersing liquid thereof |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150408 |