CN101837461A - Method for producing metal powder by isoionic atomization - Google Patents
Method for producing metal powder by isoionic atomization Download PDFInfo
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- CN101837461A CN101837461A CN 201010178475 CN201010178475A CN101837461A CN 101837461 A CN101837461 A CN 101837461A CN 201010178475 CN201010178475 CN 201010178475 CN 201010178475 A CN201010178475 A CN 201010178475A CN 101837461 A CN101837461 A CN 101837461A
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Abstract
The invention relates to a method for producing metal powder by isoionic atomization. The method comprises the following steps of: instantaneously increasing the temperature of metal from a room temperature to over 5000k by utilizing an isoionic electric arc; melting the metal raw material into a liquid state; blowing the liquid metal into powder by utilizing air; then, adding a great amount of cooling air to decrease the temperature to below 100 DEG C; and finally, separating solid and liquid and recovering. The isoionic atomization technology has simple powder-preparing process, short flow, instantaneous completion, less man-made quality-influencing factors, low electric energy and less man hours. By using the method, aluminum, copper, iron, nickel, silver and stainless steel powder are successfully prepared. The invention has the advantages of wide powder preparation range covering heavy and light nonferrous metal, noble metal, and the like, simple process, one-step completion, good product quality, high purity reaching 99.9 percent, superfine grain diameter from 1 mm to 1 millimicron and even spherical grains, and all powder products have good fluidness without generating three wastes.
Description
Technical field
The present invention relates to powder metallurgy, i.e. the method for producing metal powder by isoionic atomization.
Background technology
Metal current powder production worker mainly is atomization, chemical method, electrolysis and mechanical milling method.As Canada's world-famous INCO carbonyl nickel powder legal system hydroxyl nickel powder.The carbonyl iron dust legal system carbonyl iron dust of Germany's BASF.These technologies are all very complicated, long flow path, and power consumption is high, and environment is had bigger pollution.
Summary of the invention
In order to overcome complex process in the metal current powder production, long flow path, power consumption height, environment to be had the shortcoming of bigger pollution, the present invention proposes a kind of method of producing metal powder by isoionic atomization.
The method of this producing metal powder by isoionic atomization, it is characterized in that, technological process is as follows: be to utilize plasma-arc that metal temperature moment is elevated to more than the 5000k by room temperature, raw metal is molten into liquid state, utilize gas to jet into powder again, add a large amount of refrigerating gases then, drop to below 100 ℃, these metal-powders are cooled off rapidly, carry out gas solid separation at last and reclaim.
The equipment of plasma spraying milling method mainly comprises: the power supply of 380V, 50HZ and be not less than the air compressor machine of 0.6Pma, power supply links to each other with power control unit, the direct current of power control unit output 30-40V, 200-400A, positive and negative two electrodes by cable and dc source link to each other, air compressor machine communicates by pipeline and plasma-arc origination point, and metal-powder links to each other with cooling chamber and gas solid separation recovery system by spout.
Plasma spraying technology flouring technology is simple, flow process is short, moment finishes, and qualitative factor is few, electric energy is little in order to cause, man-hour is few for the people.The preparation of success of the present invention aluminium, copper, iron, nickel, silver, stainless steel powder.Advantage of the present invention is as follows, and 1, the scope of powder process is wide, can contain lid weight, light non-ferrous metal, noble metal etc.; 2, technology is simple, and a step finishes; 3, good product quality, purity can reach 99.9%, and particle diameter reaches ultra-fine level, can be from the millimeter to the millimicron (1mm-1 μ m), uniform particles all is a spherical; 4, all powder product flowabilities are all good; 5, the no three wastes produce.
Description of drawings
Fig. 1 is a process chart of the present invention
Fig. 2 is an equipment block diagram of the present invention
Fig. 3 is the Electronic Speculum figure of the silver powder produced of the present invention
Fig. 4 is the Electronic Speculum figure of the copper powder produced of the present invention
Fig. 5 is the Electronic Speculum figure of the nickel powder produced of the present invention
The specific embodiment
As can be seen from Figure 1, the method of this producing metal powder by isoionic atomization, technological process is as follows: utilize plasma-arc that metal temperature moment is elevated to more than the 5000k by room temperature, raw metal is molten into liquid state, utilize gas to jet into powder again, add a large amount of refrigerating gases then, drop to below 100 ℃, these metal-powders are cooled off rapidly, carry out gas solid separation then and reclaim.
As can be seen from Figure 2, the equipment of plasma spraying milling method mainly comprises: the power supply of 380V, 50HZ and be not less than the air compressor machine of 0.6Pma, power supply links to each other with power control unit, the direct current of power control unit output 30-40V, 200-400A, positive and negative two electrodes by cable and dc source link to each other, air compressor machine communicates by pipeline and plasma-arc origination point, and metal-powder links to each other with cooling chamber and gas solid separation recovery system by spout.
The Electronic Speculum figure of the silver powder from Fig. 3, Fig. 4 and Fig. 5, copper powder, nickel powder as can be seen, the product particle globulate, particle diameter is even, the product purity height
It is as follows to the detailed description of the invention to lift 6 specific embodiments below:
Embodiment 1: the production of stainless steel powder, electric current with 35V, 400A produces plasma-arc, make the piece of stainless steel instant melting for liquid, the air blown that adds 2 cubes m/mins again, the air cooling that adds 21000 cubes m/mins then, drop to below 100 ℃, be cooled to the powder of various fineness rapidly, carry out gas solid separation then and reclaim.
Embodiment 2: the production of silver powder, electric current with 35V, 380A produces plasma-arc, make the silver bullion instant melting for liquid, the air blown that adds 1.9 cubes m/mins again, the air cooling that adds 20000 cubes m/mins then, drop to below 100 ℃, be cooled to the powder of various fineness rapidly, carry out gas solid separation then and reclaim.
Embodiment 3: the production of nickel powder, electric current with 35V, 350A produces plasma-arc, make the nickel block instant melting for liquid, the air blown that adds 1.8 cubes m/mins again, the air cooling that adds 19000 cubes m/mins then, drop to below 100 ℃, be cooled to the powder of various fineness rapidly, carry out gas solid separation then and reclaim.
Embodiment 4: the production of iron powder, electric current with 35V, 300A produces plasma-arc, make the iron block instant melting for liquid, the nitrogen injection that adds 1.7 cubes m/mins again, the nitrogen cooling that adds 18000 cubes m/mins then, drop to below 100 ℃, be cooled to the powder of various fineness rapidly, carry out gas solid separation then and reclaim.
Embodiment 5: the production of copper powder, electric current with 35V, 280A produces plasma-arc, make the copper billet instant melting for liquid, the air blown that adds 1.6 cubes m/mins again, the air cooling that adds 17000 cubes m/mins then, drop to below 100 ℃, be cooled to the powder of various fineness rapidly, carry out gas solid separation then and reclaim.
Embodiment 6: the production of aluminium powder, electric current with 35V, 250A produces plasma-arc, make the aluminium block instant melting for liquid, the nitrogen injection that adds 1.5 cubes m/mins again, the nitrogen cooling that adds 16000 cubes m/mins then, drop to below 100 ℃, be cooled to the powder of various fineness rapidly, carry out gas solid separation then and reclaim.
Claims (8)
1. the method for producing metal powder by isoionic atomization, it is characterized in that, technological process is as follows: be to utilize plasma-arc that metal temperature moment is elevated to more than the 5000k by room temperature, raw metal is molten into liquid state, utilize gas to jet into powder again, add a large amount of refrigerating gases then, drop to below 100 ℃, these metal-powders are cooled off rapidly, carry out gas solid separation at last and reclaim.
2. the method for producing metal powder by isoionic atomization according to claim 1, it is characterized in that: the equipment of plasma spraying milling method mainly comprises: the power supply of 380V, 50HZ and be not less than the air compressor machine of 0.6Pma, power supply links to each other with power control unit, the direct current of power control unit output 30-40V, 200-400A, positive and negative two electrodes by cable and dc source link to each other, air compressor machine communicates by pipeline and plasma-arc origination point, and metal-powder links to each other with cooling chamber and gas solid separation recovery system by spout.
3. the method for producing metal powder by isoionic atomization according to claim 1, it is characterized in that: the production of stainless steel powder, electric current with 35V, 400A produces plasma-arc, make the piece of stainless steel instant melting for liquid, the air blown that adds 2 cubic metres/per minute again, the air that adds 21000 cubic metres/per minute then cools off, and drops to below 100 ℃, be cooled to the powder of various fineness rapidly, carry out gas solid separation then and reclaim.
4. the method for producing metal powder by isoionic atomization according to claim 1, it is characterized in that: the production of silver powder, electric current with 35V, 380A produces plasma-arc, make the silver bullion instant melting be liquid state, gaseous state and plasma state, the air blown that adds 1.9 cubic metres/per minute again, the air that adds 20000 cubic metres/per minute then cools off, and drops to below 100 ℃, be cooled to the powder of various fineness rapidly, carry out gas solid separation then and reclaim.
5. the method for producing metal powder by isoionic atomization according to claim 1, it is characterized in that: the production of nickel powder, electric current with 35V, 350A produces plasma-arc, make the nickel block instant melting for liquid, the air blown that adds 1.8 cubic metres/per minute again, the air that adds 19000 cubic metres/per minute then cools off, and drops to below 100 ℃, be cooled to the powder of various fineness rapidly, carry out gas solid separation then and reclaim.
6. the method for producing metal powder by isoionic atomization according to claim 1, it is characterized in that: the production of iron powder, electric current with 35V, 300A produces plasma-arc, make the iron block instant melting for liquid, the nitrogen injection that adds 1.7 cubic metres/per minute again, the nitrogen that adds 18000 cubic metres/per minute then cools off, and drops to below 100 ℃, be cooled to the powder of various fineness rapidly, carry out gas solid separation then and reclaim.
7. the method for producing metal powder by isoionic atomization according to claim 1, it is characterized in that: the production of copper powder, electric current with 35V, 280A produces plasma-arc, make the copper billet instant melting for liquid, the air blown that adds 1.6 cubic metres/per minute again, the air that adds 17000 cubic metres/per minute then cools off, and drops to below 100 ℃, be cooled to the powder of various fineness rapidly, carry out gas solid separation then and reclaim.
8. the method for producing metal powder by isoionic atomization according to claim 1, it is characterized in that: the production of aluminium powder, electric current with 35V, 250A produces plasma-arc, make the aluminium block instant melting for liquid, the nitrogen injection that adds 1.5 cubic metres/per minute again, the nitrogen that adds 16000 cubic metres/per minute then cools off, and drops to below 100 ℃, be cooled to the powder of various fineness rapidly, carry out gas solid separation then and reclaim.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103386492A (en) * | 2013-07-19 | 2013-11-13 | 江西悦安超细金属有限公司 | Preparation method for superfine spherical stainless steel powder |
| CN103537704A (en) * | 2013-03-15 | 2014-01-29 | 袁志刚 | Pneumatic atomization production method of high-purity fine spherical metal magnesium powder |
| CN103769594A (en) * | 2013-11-25 | 2014-05-07 | 王利民 | Technological method and device for preparing high-purity spherical superfine/nanoscale powdered materials in plasma atomization mode |
| CN106848200A (en) * | 2017-01-23 | 2017-06-13 | 北京鼎能开源电池科技股份有限公司 | A kind of preparation method of lithium-ion battery lithium iron phosphate positive electrode |
| CN107983968A (en) * | 2017-12-05 | 2018-05-04 | 南通金源智能技术有限公司 | A kind of component and preparation method of 3D printing acieral powder |
| CN108524984A (en) * | 2017-03-02 | 2018-09-14 | 舒华乐有限公司 | Filtering body for killing the bacterium in fluid and virus |
| CN108697095A (en) * | 2015-12-21 | 2018-10-23 | 艾尔尤斯科技有限公司 | Biocidal metallic particles and its production method |
| CN109750320A (en) * | 2019-03-04 | 2019-05-14 | 张华宇 | The method for preparing metal alloy powders is combined in atomization electrolysis |
| CN112979009A (en) * | 2021-01-27 | 2021-06-18 | 中日友好环境保护中心(生态环境部环境发展中心) | Process for removing tetrabromobisphenol A in wastewater based on iron-carbon micro-electrolysis technology |
| CN113414398A (en) * | 2021-06-21 | 2021-09-21 | 江苏天楹等离子体科技有限公司 | Equipment and method for preparing metal powder by using plasma |
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| CN1864896A (en) * | 2005-05-20 | 2006-11-22 | 友成Tech株式会社 | Production method of metal powder |
| CA2654013A1 (en) * | 2006-06-01 | 2007-12-06 | Cvrd Inco Limited | Method for producing metal nanopowders by decomposition of metal carbonyl using an induction plasma torch |
| CN101134244A (en) * | 2007-09-06 | 2008-03-05 | 安泰科技股份有限公司 | Method for producing stainless steel powder containing nitrogen/ high nitrogen by adopting gas atomization method |
| CN101695755A (en) * | 2009-10-26 | 2010-04-21 | 江西悦安超细金属有限公司 | Method for preparing alloy powder for metal injection moulding through atomization |
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2010
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Patent Citations (4)
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| CN1864896A (en) * | 2005-05-20 | 2006-11-22 | 友成Tech株式会社 | Production method of metal powder |
| CA2654013A1 (en) * | 2006-06-01 | 2007-12-06 | Cvrd Inco Limited | Method for producing metal nanopowders by decomposition of metal carbonyl using an induction plasma torch |
| CN101134244A (en) * | 2007-09-06 | 2008-03-05 | 安泰科技股份有限公司 | Method for producing stainless steel powder containing nitrogen/ high nitrogen by adopting gas atomization method |
| CN101695755A (en) * | 2009-10-26 | 2010-04-21 | 江西悦安超细金属有限公司 | Method for preparing alloy powder for metal injection moulding through atomization |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537704A (en) * | 2013-03-15 | 2014-01-29 | 袁志刚 | Pneumatic atomization production method of high-purity fine spherical metal magnesium powder |
| CN103386492A (en) * | 2013-07-19 | 2013-11-13 | 江西悦安超细金属有限公司 | Preparation method for superfine spherical stainless steel powder |
| CN103769594A (en) * | 2013-11-25 | 2014-05-07 | 王利民 | Technological method and device for preparing high-purity spherical superfine/nanoscale powdered materials in plasma atomization mode |
| CN108697095A (en) * | 2015-12-21 | 2018-10-23 | 艾尔尤斯科技有限公司 | Biocidal metallic particles and its production method |
| CN106848200A (en) * | 2017-01-23 | 2017-06-13 | 北京鼎能开源电池科技股份有限公司 | A kind of preparation method of lithium-ion battery lithium iron phosphate positive electrode |
| CN108524984A (en) * | 2017-03-02 | 2018-09-14 | 舒华乐有限公司 | Filtering body for killing the bacterium in fluid and virus |
| CN107983968A (en) * | 2017-12-05 | 2018-05-04 | 南通金源智能技术有限公司 | A kind of component and preparation method of 3D printing acieral powder |
| CN109750320A (en) * | 2019-03-04 | 2019-05-14 | 张华宇 | The method for preparing metal alloy powders is combined in atomization electrolysis |
| CN112979009A (en) * | 2021-01-27 | 2021-06-18 | 中日友好环境保护中心(生态环境部环境发展中心) | Process for removing tetrabromobisphenol A in wastewater based on iron-carbon micro-electrolysis technology |
| CN112979009B (en) * | 2021-01-27 | 2022-07-29 | 中日友好环境保护中心(生态环境部环境发展中心) | Process for removing tetrabromobisphenol A in wastewater based on iron-carbon micro-electrolysis technology |
| CN113414398A (en) * | 2021-06-21 | 2021-09-21 | 江苏天楹等离子体科技有限公司 | Equipment and method for preparing metal powder by using plasma |
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| CN101837461B (en) | 2012-03-28 |
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