CN108637265A - A kind of preparation process of zinc powder - Google Patents
A kind of preparation process of zinc powder Download PDFInfo
- Publication number
- CN108637265A CN108637265A CN201810476318.5A CN201810476318A CN108637265A CN 108637265 A CN108637265 A CN 108637265A CN 201810476318 A CN201810476318 A CN 201810476318A CN 108637265 A CN108637265 A CN 108637265A
- Authority
- CN
- China
- Prior art keywords
- zinc powder
- slurries
- preparation process
- zinc
- atomization
- 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
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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
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- 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
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0832—Handling of atomising fluid, e.g. heating, cooling, cleaning, recirculating
-
- 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
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0848—Melting process before atomisation
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention discloses a kind of preparation processes of zinc powder.The technique belongs to metallurgical technology field, solves the problems, such as that complex process, yield rate are low in existing zinc powder preparation process, including by zinc ingot metal and copper particle is 1 in mass ratio:0.01 is added in melting furnace, and stirring is melt into slurries；It is kept the temperature after filtering slurries；Slurries are atomized；The post-treated postcooling of material, screening after being atomized, finished product.The present invention is in initial zinc ingot metal melt stage, add copper particle, since the thermal conductivity of copper particle is good and fusing point is far above zinc ingot metal, to promote the propagation of heat, in this way, stirring action and copper particle auxiliary heat transfer under the action of so that zinc ingot metal melt faster, heating evenly, to be conducive to the atomization flow in later stage；Zinc powder powder is cooled down using alcohol, while safe efficient, avoid using water cooling and brings new impurity into so that finished product zinc powder is purer.
Description
Technical field
The invention belongs to metallurgical technology fields, specifically, more particularly to a kind of preparation process of zinc powder.
Background technology
Zinc powder is the powdered metallic zinc of Dark grey, can make pigment, and covering power is extremely strong, has good antirust and resistance to big
The effect of gas cut erosion.It commonly uses to manufacture Fang Xiu Qi ﹑ strong reductants etc..
Preparing zinc powder at present and mainly using has reducing smelting process（Using electric furnace zinc powder as representative）, fusing blowing method（With siphon
Injection is representative）, four kinds of methods of atomization and electrolysis.
Atomization includes again jet atomization method and centrifugal atomization, and the method for most common of which is jet atomization method.Injection
The shaping medium of atomization mainly has pressure-air, high-pressure inert gas and high pressure water.Due to high-pressure inert gas and high pressure water
Production cost it is relatively high, so at present most commonly pressure-air prepare zinc powder, the cooling of jet atomization method as medium
Medium is divided into gas cooling and liquid cooling, and currently used is gas cooling medium.The zinc powder impurity prepared with this method is few, grain
Degree is evenly distributed, and production capacity is high.But the shortcomings that jet atomization method, is：Finished powder rate is low, conventional powders is such as blown, once at Powder Particle Size
Ratio between+200 mesh to -40 mesh is generally in 70-80%.
Invention content
The present invention is in view of the above problems, provide a kind of simple for process, preparation process of the zinc powder of high yield rate.
The technical scheme is that：Include the following steps：
（1）It is 1 in mass ratio by zinc ingot metal and copper particle:0.01 is added in melting furnace, stirs 20-25min, and zinc ingot metal melting is made to be slurried
Liquid, copper particle are mixed to be dispersed in slurries；
（2）Slurries are filtered, filtered slurries are put into insulation still, keep the temperature 30-35min；
（3）Slurries are put into atomising device to be atomized；
（4）Atomization resulting material is put into after-treatment device and carries out cooling, is screened to get finished product.
Preferably, the step（1）Middle melting furnace is heated to 420-450 DEG C.
Preferably, the step（2）Middle insulation still is heated to 550-600 DEG C.
Preferably, the step（3）In atomising device include air accumulator and atomization tank, charging is equipped at the top of atomization tank
Mouth, bottom are equipped with discharge port, and feed inlet is connected to the step（2）In insulation still, discharge port is connected to the step（4）In after
Processing unit；
Preferably, the atomization tank inside upper part is equipped with atomizer, and atomizer is connected to air accumulator.
Preferably, further include curved pipe, curved pipe is in atomization tank, the front end connection feed inlet of curved pipe, end court
To atomization tank top curved and with horizontal direction be in 35 ° of -45 ° of angles, atomizer towards arc pipe end, be located at curved pipe end
Hold tangential direction.
Preferably, the after-treatment device includes cooling body and vibrating screen, and the top of cooling body is connected to discharge port, cold
But mechanism includes the ontology that top is V-arrangement opening, and opening is located at atomization pot bottom, alcohol is housed, alcohol is for cold in ontology
But zinc powder, vibrating screen connect cooling body, for screening varigrained zinc powder.
Preferably, it is the inert gas of 1.5MPa-2.0MPa that the built in gas tank, which has pressure,.
Preferably, the top of the cooling body is equipped with gas outlet, and the gas outlet is for being discharged inert gas and vaporization
Alcohol.
The beneficial effects of the invention are as follows：During melting zinc ingot metal, add copper particle, since the thermal conductivity of copper particle is good and
Fusing point is far above zinc ingot metal, to promote the propagation of heat so that zinc ingot metal melt faster, heating evenly, gradient type heating is true
It protects zinc powder powder shape and size distribution is in perfect condition；Secondly, slurries are led to atomization tank by setting curved pipe from insulation still,
Since curved pipe is bent upwards, the acceleration of slurries obliquely is given, moreover, atomizer cutting towards slurries movement locus
Line direction, in this way, improving the relative velocity between high-pressure inert gas and slurries so that atomizing effect is more preferably.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
In figure：1. melting furnace；2. insulation still；31. air accumulator；32. atomization tank；321. feed inlet；322. discharge port；33.
Atomizer；34. curved pipe；41. ontology；411. open；412. gas outlet；42. vibrating screen.
Specific implementation mode
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that these embodiments are only used for
Illustrate the present invention rather than limit the scope of the invention, after having read the present invention, those skilled in the art are to the present invention
The modifications of various equivalent forms fall within the application range as defined in the appended claims.
A kind of preparation process of zinc powder of the present invention, includes the following steps：
（1）It is 1 in mass ratio by zinc ingot metal and copper particle:0.01 is added in melting furnace, stirs 20-25min, and zinc ingot metal melting is made to be slurried
Liquid, copper particle are mixed to be dispersed in slurries；
（2）Slurries are filtered, filtered slurries are put into insulation still, keep the temperature 30-35min；
（3）Slurries are put into atomising device to be atomized；
（4）Atomization resulting material is put into after-treatment device and carries out cooling, is screened to get finished product.
As shown in Figure 1, the step（1）It is middle that melting furnace 1 is heated to 420-450 DEG C.
The step（2）It is middle that insulation still 2 is heated to 550-600 DEG C.Using step（1）And step（2）Such gradient
Mode of heating can preferably control temperature so that the shape and size distribution of the zinc powder powder after atomization are in more satisfactory shape
State.
The step（3）In atomising device include air accumulator 31 and atomization tank 32,32 top of the atomization tank be equipped with into
Material mouth 321, bottom are equipped with discharge port 322, and the feed inlet 321 is connected to the step（2）In insulation still 2, the discharge port
The 322 connection steps（4）In after-treatment device；
32 inside upper part of the atomization tank is equipped with atomizer 33, and the atomizer 33 is connected to air accumulator 32.Slurries are being kept the temperature
After being kept the temperature in kettle, introduces in atomization tank in time, prevent slurries from aoxidizing, influence final product quality.
Further include curved pipe 34, the curved pipe 34 is set in atomization tank 32, the front end connection charging of the curved pipe 34
Mouthfuls 321, end is in 35 ° of -45 ° of angles towards 32 top curved of atomization tank and with horizontal direction, and the atomizer 33 is towards arc
34 end of shape pipe is located at 34 end tangential direction of curved pipe.Slurries are led to atomization tank by setting curved pipe from insulation still, due to arc
Shape pipe is bent upwards, and gives the acceleration of slurries obliquely, moreover, atomizer is towards the tangent line side of slurries movement locus
To in this way, the relative velocity between high-pressure inert gas and slurries is improved, to generate larger turbulent flow so that atomization effect
Fruit is more preferably.
The after-treatment device includes cooling body and vibrating screen 42,
The top of the cooling body is connected to discharge port 322, and the cooling body includes the ontology 41 that top is V-arrangement opening 411,
Described open 411 are located at 32 bottom of atomization tank, alcohol 5 are housed, the alcohol 5 is for cooling down zinc powder in the ontology 41；Make
Use alcohol as cooling medium, since alcohol is volatile, while reliable cooling zinc powder powder, without being carried out to zinc powder powder
It is dry, reduce technological process, improve production efficiency, moreover, in atomization process, oxygen is not present in atomization tank and ontology
Gas, alcohol would not heated combustions, it is ensured that the safety of the entire technological process of production.
The vibrating screen 42 connects cooling body, for screening varigrained zinc powder.After alcohol volatilization, by zinc powder powder
Body introduces vibrating screen and is screened.
Equipped with the inert gas that pressure is 1.5MPa-2.0MPa in the air accumulator 31.
The top of the cooling body is equipped with gas outlet 412, and the gas outlet 412 is used to be discharged inert gas and vaporization
Alcohol.
Preparation process of the present invention adds copper particle in initial zinc ingot metal melt stage, due to the thermal conductivity of copper particle
Good and fusing point is far above zinc ingot metal, to promote the propagation of heat, in this way, in stirring action and the effect of copper particle auxiliary heat transfer
Under so that zinc ingot metal melt faster, heating evenly, to be conducive to the atomization flow in later stage；Zinc powder powder is cooled down using alcohol,
It while safe efficient, avoid using water cooling and brings new impurity into so that finished product zinc powder is purer.
Claims (8)
1. a kind of preparation process of zinc powder, it is characterised in that：Include the following steps：
It is 1 in mass ratio by zinc ingot metal and copper particle:0.01 is added in melting furnace, stir 20-50min, make zinc ingot metal be melt into slurries,
Copper particle is mixed to be dispersed in slurries；
Slurries are filtered, filtered slurries are put into insulation still, keep the temperature 30-50min；
Slurries are put into atomising device to be atomized；
Atomization resulting material is put into after-treatment device and carries out cooling, is screened to get finished product.
2. the preparation process of zinc powder according to claim 1, it is characterised in that：The step（1）Middle melting furnace is heated to
420-450℃。
3. the preparation process of zinc powder according to claim 1, it is characterised in that：The step（2）It is middle to heat insulation still
To 550-600 DEG C.
4. the preparation process of zinc powder according to claim 1, it is characterised in that：The step（3）Middle atomising device includes
Air accumulator and atomization tank, atomization tank top is equipped with feed inlet, bottom is equipped with discharge port, and feed inlet is connected to the step 2）In guarantor
Warm kettle, discharge port are connected to the step 4）In after-treatment device, atomization tank inside upper part be equipped with atomizer, atomizer connect
Logical air accumulator.
5. the preparation process of zinc powder according to claim 4, it is characterised in that：Further include curved pipe, curved pipe is set to mist
Change in tank, the front end connection feed inlet of curved pipe, end are pressed from both sides towards atomization tank top curved and with horizontal direction in 35 ° -45 °
Angle, atomizer towards arc pipe end, be located at arc pipe end tangential direction.
6. the preparation process of zinc powder according to claim 1 or 4, it is characterised in that：The after-treatment device includes cooling
The top of mechanism and vibrating screen, cooling body is connected to discharge port, and cooling body includes the ontology that top is V-arrangement opening, opening cover
It is located at atomization pot bottom, alcohol is housed in ontology, alcohol connects cooling body, for screening not for cooling down zinc powder, vibrating screen
The zinc powder of one-size.
7. the preparation process of zinc powder according to claim 4, it is characterised in that：The built in gas tank has the pressure to be
The inert gas of 1.5MPa-2.0MPa.
8. the preparation process of zinc powder according to claim 6, it is characterised in that：The top of the cooling body is equipped with outlet
Mouthful, gas outlet is for being discharged inert gas and the alcohol of vaporization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810476318.5A CN108637265A (en) | 2018-05-18 | 2018-05-18 | A kind of preparation process of zinc powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810476318.5A CN108637265A (en) | 2018-05-18 | 2018-05-18 | A kind of preparation process of zinc powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108637265A true CN108637265A (en) | 2018-10-12 |
Family
ID=63756819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810476318.5A Pending CN108637265A (en) | 2018-05-18 | 2018-05-18 | A kind of preparation process of zinc powder |
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| Country | Link |
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| CN (1) | CN108637265A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112169625A (en) * | 2020-09-09 | 2021-01-05 | 江西澳科新材料科技有限公司 | Tungsten alloy banburying device |
-
2018
- 2018-05-18 CN CN201810476318.5A patent/CN108637265A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112169625A (en) * | 2020-09-09 | 2021-01-05 | 江西澳科新材料科技有限公司 | Tungsten alloy banburying device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181012 |