CN112719276A - Preparation method of nanoscale tin powder - Google Patents
Preparation method of nanoscale tin powder Download PDFInfo
- Publication number
- CN112719276A CN112719276A CN202011598342.XA CN202011598342A CN112719276A CN 112719276 A CN112719276 A CN 112719276A CN 202011598342 A CN202011598342 A CN 202011598342A CN 112719276 A CN112719276 A CN 112719276A
- Authority
- CN
- China
- Prior art keywords
- tin
- tin powder
- cooling
- powder
- evaporation chamber
- 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
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 187
- 238000002360 preparation method Methods 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 56
- 238000001816 cooling Methods 0.000 claims abstract description 42
- 230000008020 evaporation Effects 0.000 claims abstract description 31
- 238000001704 evaporation Methods 0.000 claims abstract description 31
- 230000008018 melting Effects 0.000 claims abstract description 31
- 238000002844 melting Methods 0.000 claims abstract description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 238000011049 filling Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 33
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 20
- 229910052760 oxygen Inorganic materials 0.000 claims description 20
- 239000001301 oxygen Substances 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 13
- 238000009833 condensation Methods 0.000 claims description 9
- 230000005494 condensation Effects 0.000 claims description 9
- 239000000110 cooling liquid Substances 0.000 claims description 8
- 239000002105 nanoparticle Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 8
- 238000009690 centrifugal atomisation Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000001856 aerosol method Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000011231 conductive filler Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009689 gas atomisation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/054—Nanosized particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/065—Spherical particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
Abstract
The invention discloses a preparation method of nano-grade tin powder, relating to the technical field of powder preparation, and the key point of the technical scheme comprises the following steps: step 1, filling a tin material into a tin melting furnace, vacuumizing an evaporation chamber to be less than or equal to 10kPa, introducing nitrogen, and controlling the pressure to be 110-120 kPa; step 2, pre-filling a tin material in the evaporation chamber, starting a plasma gun in the evaporation chamber to form a plasma arc, melting the tin material, and controlling the current of the plasma arc to be less than 500A and the voltage to be less than 140V; step 3, after the tin material is completely melted, adjusting the plasma arc current to 500-600A and the voltage to 140-160V until the melted tin material is evaporated; step 4, guiding the tin liquid in the tin melting furnace into an evaporation chamber, and controlling the liquid level height of the molten tin material to be stable; step 5, crystallizing and nucleating the evaporated tin material in a condensing tube, and then cooling the tin material in a cooling chamber to 40-60 ℃ to obtain a tin powder solution; and 6, separating the tin powder solution to obtain the tin powder. The invention has the effect of improving the quality of the nano tin powder.
Description
Technical Field
The application relates to the technical field of powder preparation, in particular to a method for preparing nanoscale tin powder.
Background
In conductive fillers such as micro-capacitive materials and electronic paste, metallic nickel powder is generally used. The metallic nickel powder generally comprises a matrix resin and conductive filler, i.e., conductive particles, as main components, and the conductive particles are bonded together by the bonding action of the matrix resin to form a conductive path, thereby realizing conductive connection of the bonded material. In the capacitor firing process, certain nano tin powder is added on the surfaces of metal and ceramic, so that the sintering temperature of powder metallurgy products and high-temperature ceramic products is greatly reduced, and the performance of the capacitor is improved.
At present, the tin powder preparation method mainly comprises an aerosol method, a water mist method, a centrifugal atomization method and the like.
The gas mist method is a method in which molten tin is impacted with high-pressure nitrogen gas to pulverize the molten tin into fine droplets, and the fine droplets are condensed into powder by contact with the nitrogen gas. Present tin powder gas atomization bucket, including the atomizing bucket, the top of atomizing bucket is equipped with the small bag that communicates with the atomizing bucket, and one side of atomizing bucket is equipped with the air pump, is connected with the trachea on the air pump, trachea and atomizing bucket intercommunication. When the tin melting tank is used, the heated tin melt in a molten state is injected into the atomizing barrel, and then high-pressure nitrogen is injected into the atomizing barrel, so that the tin melt forms fine liquid drops, and the tin melt is rapidly condensed through the nitrogen to form fine tin powder.
The centrifugal atomization method is to throw molten tin outwards by using the centrifugal force of a centrifugal barrel so that the molten tin forms a sphere in the air and forms tin powder after cooling.
Therefore, the liquid tin in the tin powder prepared by the aerosol method has different pressures at the center and the periphery of the atomizing barrel to form a pressure difference, so that tin powder particles are unevenly distributed after atomization, part of fine particles are adhered to form conjoined particles, and the surface of the powder has poor sphericity and dispersibility. Due to the pressure limitation of the high-pressure nitrogen, the grain diameter of the atomized tin powder is often more than 5 u. The centrifugal atomization method requires that tin melt needs to be condensed to form tin powder, so that the influence of the ambient temperature outside a centrifugal barrel on the tin powder in the forming process is large, and the quality of the prepared tin powder is uneven. And the grain diameter of the formed tin powder is often more than 5um, and the tin powder below 0.5u required by micro-capacitance is difficult to produce.
In conclusion, the existing tin powder preparation method has the problems of large particle size, uneven distribution and poor dispersibility of the obtained tin powder, and further influences the quality of the nano tin powder and needs to be improved.
Disclosure of Invention
In view of this, an object of the present application is to provide a method for preparing nano-tin powder, so as to achieve the purpose of significantly improving the quality of nano-tin powder. The specific scheme is as follows:
a method for preparing nano-grade tin powder comprises the steps of adopting a preparation device which is formed by sequentially connecting a tin melting furnace, a tin feeding pipe, an evaporation chamber, a condensation pipe, a cooling chamber, a gas-liquid separator and a settling tank, and obtaining the tin powder by a wet cooling method; the wet cooling method comprises the following steps:
step 1, filling a tin material into a tin melting furnace, vacuumizing an evaporation chamber to be less than or equal to 10kPa, introducing nitrogen, and controlling the pressure in a preparation device to be 110-120 kPa;
step 2, pre-filling a tin material in the evaporation chamber, starting a plasma gun in the evaporation chamber to form a plasma arc between the evaporation chamber and the tin material, so that the tin material is molten, and controlling the current of the plasma arc to be less than 500A and the voltage to be less than 140V;
step 4, guiding the tin liquid in the tin melting furnace into an evaporation chamber, and controlling the liquid level height of the molten tin material to be stable;
and 6, separating the tin powder solution to obtain the tin powder.
Preferably: the settling tank is connected with a centrifugal pump, and one end of the centrifugal pump is connected with the cooling chamber; and the top of the cooling chamber is provided with a spray header connected with the centrifugal pump.
Preferably: and cooling liquid is introduced into the cooling chamber, and the cooling liquid is deionized water.
Preferably: and an oxygen concentration adjusting unit is arranged in the condensing pipe.
Preferably: the preparation device is internally sealed integrally and is provided with nitrogen.
Preferably: and heating and melting the tin material in the tin melting furnace.
Preferably: the tin powder is spherical and has a particle size of 30-1500 nm.
Preferably: the oxygen content of the tin powder is 0.5-20%.
According to the scheme, the application provides the preparation method of the nano-grade tin powder, and the preparation method of the nano-grade tin powder has the following beneficial effects:
1. the growth speed of tin powder particles is controlled by adjusting the air flow, so that the tin powder with the particle size of 30-1500nm is effectively obtained.
2. The operability is improved by controlling the oxygen concentration of the condensation pipe, and the oxygen content of the tin powder is effectively controlled to be 0.5-20%.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a nano-scale tin powder preparation apparatus disclosed in the present application.
Description of reference numerals: 1. a tin melting furnace; 2. feeding a tin tube; 3. an evaporation chamber; 4. a condenser tube; 5. a shower head; 6. a cooling chamber; 7. a settling tank; 8. a centrifugal pump; 9. a vapor-liquid separator.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The following is a detailed description of the method for preparing nano-sized tin powder according to the embodiment of the present invention:
as shown in fig. 1, a nano-grade tin powder preparation device comprises a tin melting furnace 1, a tin feeding pipe 2, an evaporation chamber 3, a condensation pipe 4, a cooling chamber 6, a gas-liquid separator and a settling tank 7 which are connected in sequence.
Wherein, the tin melting furnace 1 is used for heating and melting metallic tin materials; the tin feeding pipe 2 guides the molten tin material in the tin melting furnace 1 into a crucible of the evaporation chamber 3; the condenser tube 4 is used for crystallization and nucleation of the evaporated tin material; the cooling chamber 6 is used for cooling and obtaining tin powder; the gas-liquid separator plays a role in effectively separating gas and solution containing tin powder; and after the solution is led into the settling tank 7, the tin powder can be primarily separated from the solution through settling separation. It should be mentioned that a centrifugal pump 8 is connected to the bottom of the settler 7. One end of the centrifugal pump 8 is connected with the cooling chamber 6, and the spray header 5 connected with the centrifugal pump 8 is arranged at the top of the cooling chamber 6, so that cooling liquid is guided into the cooling chamber 6 through the centrifugal pump 8 under the action of the spray header 5, and an effective cooling circulation effect is achieved. It should be noted that the cooling liquid is deionized water, so as to effectively avoid the influence of metal ions and non-metal ions on the preparation quality of the tin powder. And the preparation device is internally sealed integrally and is provided with nitrogen as protective gas so as to achieve the purpose of preventing tin powder from being oxidized in the preparation process. Meanwhile, an oxygen concentration adjusting unit is provided in the condensation duct 4. The oxygen concentration adjusting unit can improve the operability while adjusting the oxygen concentration of the gas entering the condensing pipe 4, and can effectively control the oxygen content of the tin powder to be 0.5-20%.
A nanometer tin powder preparation method, through adopting by melting the tin stove 1, send the tin tube 2, the evaporation chamber 3, the condenser pipe 4, the cooling chamber 6, the vapour-liquid separator and preparation facilities that the settling tank 7 connects sequentially, get the tin powder with the method of wet cooling; the wet cooling method comprises the following steps:
step 1, filling a tin material into a tin melting furnace 1, vacuumizing an evaporation chamber 3 to be less than or equal to 10kPa, introducing nitrogen, and controlling the pressure in a preparation device to be 110-120 kPa;
step 2, pre-filling tin materials in the evaporation chamber 3, starting a plasma gun in the evaporation chamber 3 to form a plasma arc between the tin materials, melting the tin materials, and controlling the current of the plasma arc to be less than 500A and the voltage to be less than 140V;
step 4, guiding the tin liquid in the tin melting furnace 1 into the evaporation chamber 3, and controlling the liquid level height of the molten tin material to be stable;
and 6, separating the tin powder solution to obtain the tin powder.
It is to be mentioned that the tin powder obtained is spherical and has a particle size of 30-1500 nm; wherein the oxygen content of the tin powder is controllable and is 0.5-20%.
Example one
As shown in fig. 1, a nano-grade tin powder preparation device comprises a tin melting furnace 1, a tin feeding pipe 2, an evaporation chamber 3, a condensation pipe 4, a cooling chamber 6, a gas-liquid separator and a settling tank 7 which are connected in sequence.
Wherein, the tin melting furnace 1 is used for heating and melting metallic tin materials; the tin feeding pipe 2 guides the molten tin material in the tin melting furnace 1 into a crucible of the evaporation chamber 3; the condenser tube 4 is used for crystallization and nucleation of the evaporated tin material; the cooling chamber 6 is used for cooling and obtaining tin powder; the gas-liquid separator plays a role in effectively separating gas and solution containing tin powder; and after the solution is led into the settling tank 7, the tin powder can be primarily separated from the solution through settling separation. It should be mentioned that a centrifugal pump 8 is connected to the bottom of the settler 7. One end of the centrifugal pump 8 is connected with the cooling chamber 6, and the spray header 5 connected with the centrifugal pump 8 is arranged at the top of the cooling chamber 6, so that cooling liquid is guided into the cooling chamber 6 through the centrifugal pump 8 under the action of the spray header 5, and an effective cooling circulation effect is achieved. It should be noted that the cooling liquid is deionized water, so as to effectively avoid the influence of metal ions and non-metal ions on the preparation quality of the tin powder. And the preparation device is internally sealed integrally and is provided with nitrogen as protective gas so as to achieve the purpose of preventing tin powder from being oxidized in the preparation process. Meanwhile, an oxygen concentration adjusting unit is provided in the condensation duct 4. The oxygen concentration adjusting unit can improve the operability while adjusting the oxygen concentration of the gas entering the condensation pipe 4, and the purpose of effectively controlling the oxygen content of the tin powder at 0.5% is achieved.
A nanometer tin powder preparation method, through adopting by melting the tin stove 1, send the tin tube 2, the evaporation chamber 3, the condenser pipe 4, the cooling chamber 6, the vapour-liquid separator and preparation facilities that the settling tank 7 connects sequentially, get the tin powder with the method of wet cooling; the wet cooling method comprises the following steps:
step 1, filling a tin material into a tin melting furnace 1, vacuumizing an evaporation chamber 3 to be less than or equal to 10kPa, introducing nitrogen, and controlling the pressure in a preparation device to be 110 kPa;
step 2, pre-filling tin materials in the evaporation chamber 3, starting a plasma gun in the evaporation chamber 3 to form a plasma arc between the plasma gun and the tin materials, melting the tin materials, and controlling the current of the plasma arc to be 250A and the voltage to be 80V;
step 4, guiding the tin liquid in the tin melting furnace 1 into the evaporation chamber 3, and controlling the liquid level height of the molten tin material to be stable;
and 6, separating the tin powder solution to obtain the tin powder.
It is to be mentioned that the tin powder obtained is spherical and has a particle size of 30-1500 nm; wherein the oxygen content of the tin powder is controllable and is 0.5 percent.
Example two
The difference between the second example and the first example is that the pressure in the production apparatus in the second example was 115 kPa.
EXAMPLE III
The difference between the third example and the first example is that the pressure in the production apparatus in the third example was 120 kPa.
Example four
The difference between the fourth embodiment and the first embodiment is that in the step 2 of the fourth embodiment, the plasma arc current is 300A and the voltage is 60V.
EXAMPLE five
The difference between the fifth embodiment and the first embodiment is that in the step 2 of the fifth embodiment, the plasma arc current is 400A and the voltage is 120V.
EXAMPLE six
The difference between the sixth embodiment and the first embodiment is that in step 2 of the sixth embodiment, the plasma arc current is 550A and the voltage is 150V.
EXAMPLE seven
The difference between the seventh embodiment and the first embodiment is that in the step 2 of the seventh embodiment, the plasma arc current is 600A and the voltage is 160V.
Example eight
The difference between the eighth embodiment and the first embodiment is that the oxygen content of the tin powder in the eighth embodiment is controllable and 10%.
Example nine
The difference between the ninth embodiment and the first embodiment is that the oxygen content of the tin powder in the ninth embodiment is controllable and is 20%.
In conclusion, the growth speed of tin powder particles is controlled by adjusting the gas flow, so that the tin powder with the particle size of 30-1500nm is effectively obtained; meanwhile, operability is improved through oxygen concentration controllability of the condensation pipe 4, and the oxygen content of the tin powder is effectively controlled to be 0.5-20%. Therefore, the obtained tin powder has a high quality effect.
References in this application to "first," "second," "third," "fourth," etc., if any, are intended to distinguish between similar elements and not necessarily to describe a particular order or sequence. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, or apparatus.
It should be noted that the descriptions in this application referring to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (8)
1. A preparation method of nano-grade tin powder is characterized in that the tin powder is obtained by a wet cooling method by adopting a preparation device which is formed by sequentially connecting a tin melting furnace, a tin conveying pipe, an evaporation chamber, a condensation pipe, a cooling chamber, a gas-liquid separator and a settling tank; the wet cooling method comprises the following steps:
step 1, filling a tin material into a tin melting furnace, vacuumizing an evaporation chamber to be less than or equal to 10kPa, introducing nitrogen, and controlling the pressure in a preparation device to be 110-120 kPa;
step 2, pre-filling a tin material in the evaporation chamber, starting a plasma gun in the evaporation chamber to form a plasma arc between the evaporation chamber and the tin material, so that the tin material is molten, and controlling the current of the plasma arc to be less than 500A and the voltage to be less than 140V;
step 3, after the tin material is completely melted, adjusting the plasma arc current to 500-600A and the voltage to 140-160V until the melted tin material is evaporated;
step 4, guiding the tin liquid in the tin melting furnace into an evaporation chamber, and controlling the liquid level height of the molten tin material to be stable;
step 5, after crystallizing and nucleating the evaporated tin material in a condensing tube, allowing the tin material to enter a cooling chamber through the condensing tube and cooling the tin material to 40-60 ℃ to obtain a tin powder solution;
and 6, separating the tin powder solution to obtain the tin powder.
2. The method for preparing nano-sized tin powder according to claim 1, wherein the method comprises the following steps: the settling tank is connected with a centrifugal pump, and one end of the centrifugal pump is connected with the cooling chamber; and the top of the cooling chamber is provided with a spray header connected with the centrifugal pump.
3. The method for preparing nano-sized tin powder according to claim 2, wherein the method comprises the following steps: and cooling liquid is introduced into the cooling chamber, and the cooling liquid is deionized water.
4. The method for preparing nano-sized tin powder according to claim 1, wherein the method comprises the following steps: and an oxygen concentration adjusting unit is arranged in the condensing pipe.
5. The method for preparing nano-sized tin powder according to claim 1, wherein the method comprises the following steps: the preparation device is internally sealed integrally and is provided with nitrogen.
6. The method for preparing nano-sized tin powder according to claim 1, wherein the method comprises the following steps: and heating and melting the tin material in the tin melting furnace.
7. The method for preparing nano-sized tin powder according to claim 1, wherein the method comprises the following steps: the tin powder is spherical and has a particle size of 30-1500 nm.
8. The method for preparing nano-sized tin powder according to claim 1, wherein the method comprises the following steps: the oxygen content of the tin powder is 0.5-20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011598342.XA CN112719276A (en) | 2020-12-29 | 2020-12-29 | Preparation method of nanoscale tin powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011598342.XA CN112719276A (en) | 2020-12-29 | 2020-12-29 | Preparation method of nanoscale tin powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112719276A true CN112719276A (en) | 2021-04-30 |
Family
ID=75611448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011598342.XA Pending CN112719276A (en) | 2020-12-29 | 2020-12-29 | Preparation method of nanoscale tin powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112719276A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102909362A (en) * | 2012-10-15 | 2013-02-06 | 江苏博迁光伏材料有限公司 | Sub-micron solder alloy powder and preparation method thereof |
| CN102951643A (en) * | 2012-10-15 | 2013-03-06 | 宁波广博纳米新材料股份有限公司 | Production method of nano-grade spherical silica powder |
| CN105057688A (en) * | 2015-08-10 | 2015-11-18 | 宁波广博纳米新材料股份有限公司 | Method for producing superfine lead-free solder powder |
| CN105458277A (en) * | 2015-12-19 | 2016-04-06 | 江永斌 | Device and method for producing high-purity metal powder through multi-head non-transferred arc plasma polymerization |
| CN109648094A (en) * | 2018-12-28 | 2019-04-19 | 江苏博迁新材料股份有限公司 | A method of Ni-based ultra-fine high temperature alloy powder is produced using vaporize-condensation law and reduction method |
| CN109648093A (en) * | 2018-12-18 | 2019-04-19 | 江苏博迁新材料股份有限公司 | A kind of superfine metal nickel powder surface treatment method |
| CN111036929A (en) * | 2020-01-03 | 2020-04-21 | 孙丽达 | Preparation method of superfine flaky bronze powder |
-
2020
- 2020-12-29 CN CN202011598342.XA patent/CN112719276A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102909362A (en) * | 2012-10-15 | 2013-02-06 | 江苏博迁光伏材料有限公司 | Sub-micron solder alloy powder and preparation method thereof |
| CN102951643A (en) * | 2012-10-15 | 2013-03-06 | 宁波广博纳米新材料股份有限公司 | Production method of nano-grade spherical silica powder |
| CN105057688A (en) * | 2015-08-10 | 2015-11-18 | 宁波广博纳米新材料股份有限公司 | Method for producing superfine lead-free solder powder |
| CN105458277A (en) * | 2015-12-19 | 2016-04-06 | 江永斌 | Device and method for producing high-purity metal powder through multi-head non-transferred arc plasma polymerization |
| CN109648093A (en) * | 2018-12-18 | 2019-04-19 | 江苏博迁新材料股份有限公司 | A kind of superfine metal nickel powder surface treatment method |
| CN109648094A (en) * | 2018-12-28 | 2019-04-19 | 江苏博迁新材料股份有限公司 | A method of Ni-based ultra-fine high temperature alloy powder is produced using vaporize-condensation law and reduction method |
| CN111036929A (en) * | 2020-01-03 | 2020-04-21 | 孙丽达 | Preparation method of superfine flaky bronze powder |
Non-Patent Citations (1)
| Title |
|---|
| 曹茂盛等: "微纳米粉体制备与改性设备", 哈尔滨工程大学出版社, pages: 185 - 190 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8518358B2 (en) | High purity and free flowing metal oxides powder | |
| CN105127436B (en) | A kind of vacuum induction melting aerosolization preparation method of titanium or titanium alloy spherical powder | |
| CN107175337A (en) | A kind of metal powder preparation method and its device based on plasma atomization technique | |
| CN110076347B (en) | Combined powder preparation method and device based on plasma smelting and disc rotary atomization | |
| WO2018042684A1 (en) | Silver powder production method and silver powder production apparatus | |
| CN111534765B (en) | Spherical amorphous alloy powder preparation device and method | |
| WO2011054113A1 (en) | Methods and apparatuses for preparing spheroidal powders | |
| CN110181066A (en) | High sphericity 3D printing tantalum powder, preparation method and application | |
| CN109967755B (en) | Spherical fine metal powder production system and method thereof | |
| JP2005342615A (en) | Method and apparatus for producing spherical composite particle | |
| CN102476184A (en) | Copper powder as well as manufacture method, manufacture device and heat radiation element thereof | |
| CN113245544B (en) | Device and method for preparing metal-ceramic coated powder | |
| CN102950291A (en) | Production method of submicron-order tin-copper alloy powder | |
| CN106964782A (en) | A kind of method for preparing spherical niobium alloy powder | |
| CN107414091A (en) | A kind of preparation system and method for the enhanced titanium alloy powder of nano ceramics | |
| CN110919014A (en) | Preparation method of titanium alloy powder for 3D printing | |
| CN114951673A (en) | High-frequency plasma heating titanium alloy powder atomization device and process thereof | |
| CN112570722A (en) | Device for preparing ultrafine powder by plasma arc atomization method | |
| KR100821450B1 (en) | Nickel powder manufacturing method | |
| CN114918420A (en) | Apparatus and method for manufacturing powder material | |
| CN112719276A (en) | Preparation method of nanoscale tin powder | |
| KR20050049505A (en) | Method and apparatus for producing metal powder | |
| CN111565870B (en) | Copper microparticles | |
| JP3540819B2 (en) | Nickel powder manufacturing method | |
| CN116282125A (en) | Method for preparing copper oxide and copper oxide alloy powder by water atomization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |