CN104668569A - Cooling method for high-purity super-fine metal powder - Google Patents
Cooling method for high-purity super-fine metal powder Download PDFInfo
- Publication number
- CN104668569A CN104668569A CN201510103578.4A CN201510103578A CN104668569A CN 104668569 A CN104668569 A CN 104668569A CN 201510103578 A CN201510103578 A CN 201510103578A CN 104668569 A CN104668569 A CN 104668569A
- Authority
- CN
- China
- Prior art keywords
- metal powder
- purity
- water
- metal
- granularity
- 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.)
- Pending
Links
Abstract
The invention belongs to the technical field of metal powder manufacturing and relates to a cooling method for high-purity super-fine metal powder. The cooling method comprises the following steps: spraying water vapor of high-purity water or low-temperature atomized high-purity water with granularity of 1-49 microns into high-temperature titanium metal powder gas spray produced in a metal powder production furnace, coating atomized water on the metal powder surface to cool the metal powder, sucking the cooled metal powder into a vacuum collector to deposit and then discharging the deposited metal powder out of the vacuum collector to obtain the high-purity super-fine metal powder, wherein the electrical resistivity of the high-purity water is 10-20 Ohm.mm<2>/m, and the high-purity water is water of 0-1 DEG C. The cooling method has the advantages that the water vapor or the low-temperature atomized high-purity water is used, so that the production cost is low, the purity and the additional value of the produced super-fine metal powder are high, the quality is stable, and the high-purity metal powder production is adapted.
Description
Technical field
The invention belongs to submicron metal manufacturing technology field, be specifically related to a kind of cooling means of high-purity superfine metal powder.
Background technology
It is last that high pure metal generates solid-state super-fine metal powder through vapor phase method particle maker, because its temperature is higher, entering in collector and will cool it.Prior art adopts refrigerating gas to carry out cooling submicron metal, sprays into the cooler in the middle of vapor phase method particle maker and collector by refrigerating gas, makes refrigerating gas be coated on solid-state submicron metal surface and cools it.The method cooling velocity is comparatively slow, and because of the temperature of solid-state submicron metal and its carrier gas very high, therefore this solid-state submicron metal and its carrier gas to be cooled, need the refrigerating gas of more amount.The gas under room temperature is used to cool more than 1000 degrees Celsius solid-state submicron metals and its carrier gas, refrigerating gas use amount is about more than 10 times of solid-state submicron metal and carrier gas volume, namely refrigerating gas is about 300,000 times of solid-state submicron metal tap volume, and material consumption is high with energy consumption.In addition, the clad that refrigerating gas is formed is thinner, and after refrigerating gas cooling, superfine powder surface is still hotter (higher than room temperature, about 200 degrees centigrade), cause submicron metal to be easier to be oxidized, reunite and other reactions, surface is very unstable.
For this reason, Chinese patent CN 102357655 B discloses one " a kind of superfine powder cooling method ", it is characterized in that: liquid phase protective medium being atomized into particle diameter is after 50 ~ 300 μm, spray into the cooler in the middle of vapor phase method particle maker and collector, make liquid phase protective medium be coated on superfine powder surface to cool superfine powder, cooled superfine powder enters in collector and deposits, liquid phase protective medium is greater than 50 with the tap volume of superfine powder than ratio, the particle diameter of described superfine powder is 0.3 ~ 1 μm, described liquid phase protective medium is water or the aqueous solution or organic liquid or organic solution, its weak point is: one is its liquid phase protective medium is that the purity of water or the aqueous solution or organic liquid or organic solution is low, cause in the metal dust produced containing impurity all in water or the aqueous solution or organic liquid or organic solution, such as other metal ingredient or other material, cause the purity of the metal dust produced low, be worth low, such as use conventional water or the aqueous solution or organic liquid or organic solution as liquid phase protective medium, the most multipotency of purity of the metal dust produced reaches 3N level=99.9%-4N level=99.99%, and the price of the block titanium of 4N level (4N level=99.99%) is about 70,000 yuan/ton, the price of the block titanium of 5N level (5N level=99.999%) is about 120-160 ten thousand yuan/ton, the price of the block titanium of 6N level (6N level=99.9999%) is about 5,000,000 yuan/ton, visible, the purity of reguline metal is higher, its price is higher, in like manner, the purity of the metal dust made is higher, its added value is also higher, the most multipotency of purity of the metal dust using light water to make reaches 3N level-4N level, it is worth can be very low, two is use conventional water or the aqueous solution or organic liquid or organic solution slow as liquid phase protective medium cooling rate, metal gas is easily reunited, cause producing thinner or ultra-fine metal dust, the granularity of metal dust can only be positioned at 0.3-1 μm substantially, make the production efficiency of metal dust low, of poor quality.
Summary of the invention
Technical problem to be solved by this invention is the deficiency overcoming above prior art problem, a kind of cooling means of high-purity superfine metal powder is provided, the cooling velocity of this cooling means is fast, metal gas is not easily reunited, and can produce thinner submicron metal, and purity is high.
The object of the present invention is achieved like this:
A kind of cooling means of high-purity superfine metal powder, producing the granularity spraying into low-temperature atomizing in the titanium metal powder aerosol of the high temperature produced in stove to metal dust is the high purity water of 1-49 μm, make atomized water be coated on metal powder surface to cool metal dust, metal dust through cooling is inhaled in vacuum collector to be discharged to outside vacuum collector after deposition and obtains high-purity superfine metal powder, and described high-purity resistivity of water is 10-20 Ω .mm
2/ m, described high purity water is the water of 0-1 DEG C; Certainly, the granularity of high purity water atomization also can be 1-9 μm or 50-300 μm, and granularity is less, and cooling effect is better.
Above-mentioned high-purity resistivity of water is 15-18.5 Ω .mm
2/ m.
The purity of above-mentioned metal dust is 99.99%-99.9999%.
The granularity of above-mentioned submicron metal is 100-300nm.
Above-mentioned high purity water is the water of 0 DEG C.
The granularity of the low-temperature atomizing described in replacing with the water vapour of high purity water is that the high purity water of 1-49 μm sprays into metal dust and produces in the high-temperature metal powder aerosol produced in stove and cool.
The present invention has following remarkable advantage and beneficial effect compared to existing technology:
1, cooling medium of the present invention uses the granularity of low-temperature atomizing to be the high purity water of 5-49 μm, use the raw metal of more than 5N level, can produce the metal dust close to 5N level (same to purity), production cost is low, and the added value of the metal dust produced is high.
2, cooling medium use granularity of the present invention is the high purity water of 5-49 μm, 0-1 DEG C, cooling velocity is fast, the metal dust sucked in vacuum collector can be down to the temperature of less than 60-70 DEG C, metal gas is not easily reunited, be convenient to collect, steady quality, the granularity of the submicron metal obtained is 100-300nm, and the added value of submicron metal is higher.
3, the present invention adopts vacuum collector to suck metal dust and produces the high temperature titanium metal powder produced in stove, and feeding is quick, easy to operate flexibly.
4, the present invention adopts the water vapour of high purity water to replace to spray into metal dust to produce in the high-temperature metal powder aerosol produced in stove to cool, although the initial temperature of its cooling medium is higher, but the Particle Phase of its hydrone is thinner for atomized water, parcel cooling metal dust aerosol evenly, the initial temperature of cooling medium metal dust that is lower, processing is thinner, and user can select according to the fineness of processing powder.
5, the present invention is applicable to the production of high pure metal powder.
Detailed description of the invention
With specific embodiment, the present invention is further described in detail below:
Embodiment 1: a kind of cooling means of high-purity superfine metal powder, first produces in stove to metal dust that to add purity be 99.999% titanium rod or titanium block, then to spray into resistivity in the high temperature titanium metal powder aerosol produced in stove be 17.5 Ω .mm
2/ m, granularity are the high purity water of 8 μm 0 DEG C, make atomized water be coated on titanium metal powder surface to cool titanium metal powder, the titanium metal powder through cooling is inhaled in vacuum collector to be discharged to outside vacuum collector after deposition and obtains the high pure and ultra-fine titanium metal powder that purity is 99.999%, granularity is 100nm.
Embodiment 2: a kind of cooling means of high-purity superfine metal powder, produces in stove to metal dust that to add purity be 99.999% titanium rod or titanium block, then to spray into resistivity in the high temperature titanium metal powder aerosol produced in stove be 15 Ω .mm
2/ m, granularity are the high purity water of 30 μm 0.5 DEG C, make atomized water be coated on titanium metal powder surface to cool titanium metal powder, the titanium metal powder through cooling is inhaled in vacuum collector to be discharged to outside vacuum collector after deposition and obtains the high pure and ultra-fine titanium metal powder that purity is 99.999%, granularity is 150nm.
Embodiment 3: a kind of cooling means of high-purity superfine metal powder, produces in stove to metal dust that to add purity be 99.999% bronze medal metal bar or copper metal derby, then to spray into resistivity in the high temperature copper metal powder end aerosol produced in stove be 17 Ω .mm
2/ m, granularity are the high purity water of 30 μm 0.5 DEG C, make atomized water be coated on surface, copper metal powder end to cool copper metal powder end, the copper metal powder end through cooling is inhaled in vacuum collector to be discharged to after deposition outside vacuum collector and obtains the high pure and ultra-fine copper metal powder end that purity is 99.999%, granularity is 200nm.
Embodiment 4: a kind of cooling means of high-purity superfine metal powder, produces in stove to metal dust that to add purity be 99.9999% silver metal rod or silver metal block, then to spray into resistivity in the high temperature silver metal powder aerosol produced in stove be 18 Ω .mm
2/ m, granularity are the high purity water of 9 μm 0 DEG C, make atomized water be coated on silver metal powder surface to cool titanium metal powder, the silver metal powder through cooling is inhaled in vacuum collector to be discharged to outside vacuum collector after deposition and obtains the high pure and ultra-fine silver metal powder that purity is 99.9999%, granularity is 100nm.
Embodiment 5: a kind of cooling means of high-purity superfine metal powder, produces in stove to metal dust that to add purity be 99.999% nickel metal bar or nickel metal derby, then to spray into resistivity in the high temperature nickel metal dust aerosol produced in stove be 17.5 Ω .mm
2/ m, granularity are the high purity water of 40 μm 0 DEG C, make atomized water be coated on nickel metal powder surface to cool titanium metal powder, the nickel metal powder through cooling is inhaled in vacuum collector to be discharged to outside vacuum collector after deposition and obtains the high pure and ultra-fine nickel metal powder that purity is 99.999%, granularity is 150nm.
Embodiment 6: a kind of cooling means of high-purity superfine metal powder, produces in stove to metal dust that to add purity be 99.999% nickel metal bar or nickel metal derby, then to spray into resistivity in the high temperature nickel metal dust aerosol produced in stove be 17.5 Ω .mm
2the steam of/m, 100-110 DEG C of high purity waters, make atomized water be coated on nickel metal powder surface to cool titanium metal powder, the nickel metal powder through cooling is inhaled in vacuum collector to be discharged to outside vacuum collector after deposition and obtains the high pure and ultra-fine nickel metal powder that purity is 99.999%, granularity is 300-800nm.
Above-described embodiment is only preferred embodiment of the present invention, not limits the scope of the invention according to this, therefore: all equivalence changes done according to structure of the present invention, shape, principle, all should be covered by within protection scope of the present invention.
Claims (6)
1. the cooling means of a high-purity superfine metal powder, it is characterized in that: producing to metal dust the granularity spraying into low-temperature atomizing in the high-temperature metal powder aerosol produced in stove is the high purity water of 1-49 μm, make atomized water be coated on metal powder surface to cool high pure metal powder, metal dust through cooling is inhaled in vacuum collector to be discharged to outside vacuum collector after deposition and obtains high-purity superfine metal powder, and described high-purity resistivity of water is 10-20 Ω .mm
2/ m, described high purity water is the water of 0-1 DEG C.
2. the cooling means of a kind of high-purity superfine metal powder according to claim 1, is characterized in that: described high-purity resistivity of water is 15-18.5 Ω .mm
2/ m.
3. the cooling means of a kind of high-purity superfine metal powder according to claim 1, is characterized in that: the purity of described metal dust is 99.99%-99.9999%.
4. the cooling means of a kind of high-purity superfine metal powder according to claim 1, is characterized in that: the granularity of described submicron metal is 100-300nm.
5. the cooling means of a kind of high-purity superfine metal powder according to claim 1, is characterized in that: described high purity water is the water of 0 DEG C.
6. the cooling means of a kind of high-purity superfine metal powder according to any one of claim 1-5, is characterized in that: the granularity of the low-temperature atomizing described in replacing with the water vapour of high purity water is that the high purity water of 1-49 μm sprays into metal dust and produces in the high-temperature metal powder aerosol produced in stove and cool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103578.4A CN104668569A (en) | 2015-02-13 | 2015-03-10 | Cooling method for high-purity super-fine metal powder |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510079528 | 2015-02-13 | ||
| CN2015100795287 | 2015-02-13 | ||
| CN201510103578.4A CN104668569A (en) | 2015-02-13 | 2015-03-10 | Cooling method for high-purity super-fine metal powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104668569A true CN104668569A (en) | 2015-06-03 |
Family
ID=53304443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510103578.4A Pending CN104668569A (en) | 2015-02-13 | 2015-03-10 | Cooling method for high-purity super-fine metal powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104668569A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4787935A (en) * | 1987-04-24 | 1988-11-29 | United States Of America As Represented By The Secretary Of The Air Force | Method for making centrifugally cooled powders |
| US5213610A (en) * | 1989-09-27 | 1993-05-25 | Crucible Materials Corporation | Method for atomizing a titanium-based material |
| CN1164452A (en) * | 1996-05-07 | 1997-11-12 | 机械工业部桂林电器科学研究所 | Method for preparing hydraulic atomized silver powder |
| CN1906130A (en) * | 2003-12-25 | 2007-01-31 | 三井金属矿业株式会社 | Indium oxide-tin oxide powder and sputtering target using the same |
| CN101941727A (en) * | 2010-09-14 | 2011-01-12 | 李振亚 | Method for producing aluminum oxide powder used as a raw material for producing sapphire crystals by flame melt process |
| CN102357655A (en) * | 2011-06-20 | 2012-02-22 | 宁波广博纳米新材料股份有限公司 | Superfine powder cooling method |
| CN202461525U (en) * | 2012-02-29 | 2012-10-03 | 西安石油大学 | Device for improving cooling effect of atomized powder |
| CN103754910A (en) * | 2014-01-13 | 2014-04-30 | 东莞市精研粉体科技有限公司 | Method for preparing high-purity magnesia-alumina spinel (MAS) micropowder by adopting composite hydrolysis method |
-
2015
- 2015-03-10 CN CN201510103578.4A patent/CN104668569A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4787935A (en) * | 1987-04-24 | 1988-11-29 | United States Of America As Represented By The Secretary Of The Air Force | Method for making centrifugally cooled powders |
| US5213610A (en) * | 1989-09-27 | 1993-05-25 | Crucible Materials Corporation | Method for atomizing a titanium-based material |
| CN1164452A (en) * | 1996-05-07 | 1997-11-12 | 机械工业部桂林电器科学研究所 | Method for preparing hydraulic atomized silver powder |
| CN1906130A (en) * | 2003-12-25 | 2007-01-31 | 三井金属矿业株式会社 | Indium oxide-tin oxide powder and sputtering target using the same |
| CN101941727A (en) * | 2010-09-14 | 2011-01-12 | 李振亚 | Method for producing aluminum oxide powder used as a raw material for producing sapphire crystals by flame melt process |
| CN102357655A (en) * | 2011-06-20 | 2012-02-22 | 宁波广博纳米新材料股份有限公司 | Superfine powder cooling method |
| CN202461525U (en) * | 2012-02-29 | 2012-10-03 | 西安石油大学 | Device for improving cooling effect of atomized powder |
| CN103754910A (en) * | 2014-01-13 | 2014-04-30 | 东莞市精研粉体科技有限公司 | Method for preparing high-purity magnesia-alumina spinel (MAS) micropowder by adopting composite hydrolysis method |
Non-Patent Citations (1)
| Title |
|---|
| 祁鲁梁等: "《工业用水节水与水处理技术术语大全》", 30 June 2003 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105397100B (en) | A kind of preparation method of refining metallic powder and the equipment for realizing this method | |
| CN104475744B (en) | A kind of aerosolization prepares the device and method of sized spherical titanium powder and titanium alloy powder | |
| CN205414417U (en) | Device of plasma atomizing preparation high performance powder for vibration material disk | |
| CN103801704B (en) | A kind of be applicable to 3D print molding copper powder, preparation method and its usage | |
| CN104308168B (en) | The preparation method of a kind of fine grain hypoxemia spherical titanium and titanium alloy powder | |
| CN106670487B (en) | A kind of device and method preparing superfine spherical metal powder | |
| CN108247072A (en) | A kind of method that spherical 3D printing powder is prepared using plasma | |
| CN103769594A (en) | Technological method and device for preparing high-purity spherical superfine/nanoscale powdered materials in plasma atomization mode | |
| CN108161019A (en) | A kind of sensing heating and the milling method of radio frequency plasma combined atomizing pulverized coal preparation system | |
| CN108637267A (en) | A kind of device and method preparing spherical metal powder using metal wire material | |
| CN107900367A (en) | A kind of Novel atomizer of 3D printing titanium or titanium alloy powder | |
| CN204449311U (en) | For the preparation of the device of fine grain hypoxemia spherical titanium and titanium alloy powder | |
| CN108031855A (en) | A kind of sensing heating and radio frequency plasma combined atomizing pulverized coal preparation system | |
| CN105880612A (en) | Method for preparing active metal powder for additive manufacturing | |
| CN107414091B (en) | A kind of preparation system and method for the enhanced titanium alloy powder of nano ceramics | |
| CN107983965A (en) | High-temperature plasma aerosolization superfine spherical metal powder preparation method and equipment | |
| CN108393499A (en) | A kind of device and method that high energy and high speed plasma prepares globular metallic powder | |
| CN108526472A (en) | A kind of free arc system for spherical metal powder device and method | |
| CN106925786A (en) | Many uniform particle sizes' spherical powder batch preparation facilities and method based on the injection of homogeneous metal drop | |
| CN109628872A (en) | The stable thin slice micro-nano column crystal structure YSZ method for preparing heat barrier coating of phase constituent | |
| CN102357655B (en) | Superfine powder cooling method | |
| CN104862654A (en) | Integrated large-sized high-purity superconducting yttrium-barium-copper-oxide rotating target and preparation method thereof | |
| CN105000601A (en) | Production method for submicron-grade high-purity nickel protoxide powder | |
| CN104668569A (en) | Cooling method for high-purity super-fine metal powder | |
| CN104152734A (en) | Method for preparing tungsten-copper alloy from spherical tungsten powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150603 |
|
| RJ01 | Rejection of invention patent application after publication |