CN101693296A - Process of using aluminum skimming to prepare aluminum powder - Google Patents
Process of using aluminum skimming to prepare aluminum powder Download PDFInfo
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- CN101693296A CN101693296A CN200910309377A CN200910309377A CN101693296A CN 101693296 A CN101693296 A CN 101693296A CN 200910309377 A CN200910309377 A CN 200910309377A CN 200910309377 A CN200910309377 A CN 200910309377A CN 101693296 A CN101693296 A CN 101693296A
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- skimming
- aluminum
- aluminum powder
- aluminium bits
- powder technology
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a process of using aluminum skimming to prepare aluminum powder. The technological line of the process comprises: magnetic separation, pre-cleaning, pneumatic stirring, deep cleaning, separation of light impurities, centrifugal dehydration and residual oil removing, grinding, grading, secondary grinding, polishing and drying.
Description
Technical field
The present invention relates to a kind of method of making aluminium powder with the aluminium bits.
Background technology
Utilizing the aluminium bits to produce aluminium powder is the important component part of secondary aluminium industry.The aluminium bits need classification clear, and preliminary treatment is clean, can produce the aluminium powder that meets relevant criterion.Utilizing the aluminium bits to produce aluminium powder has many advantages, and the one, the metal recovery rate height, the 2nd, be worth height, the 3rd, cost is lower, and therefore utilizing the aluminium bits to produce aluminium is the shortcut that aluminium scrap utilizes.But what be worth to propose is, exists with alloy state because the aluminium bits are most of, and therefore, the aluminium powder of production is common aluminium powder, and main application is ferroalloy production, fireworks and firecrackers production, steel-making and less demanding coating.
Traditional production of aluminum powder technology is the molten atomizing method, ball-milling method etc., a but problem is all arranged, and the problem of aluminium scrap exists in melting process scaling loss that Here it is causes metal recovery rate low, and about about 92%, cost is also higher greatly.Along with industrial expansion, a kind of new production of aluminum powder technology begins to be applied, Here it is, and pure mechanical crushing method is produced aluminium powder, be characterized in less demanding to aluminium scrap, there is not scaling loss, the metal recovery rate height, the theoretic metal l rate of recovery is 100%, the actual recovered rate can reach 98%, and environment is not polluted.
Summary of the invention
Purpose of the present invention just provides a kind of technology of using aluminum skimming to prepare aluminum powder.
Process route of the present invention is: the pneumatic stirring Zhao of the magnetic separation Zhao prerinse Zhao degree of depth is cleaned the Zhao light impurities and is separated the Zhao centrifugal dehydration and take off Residual oil Zhao pulverizing Zhao classification Zhao secondary pulverizing Zhao polishing Zhao drying
A. aluminium is considered pretreating process to be worth doing:
The pneumatic stirring Zhao of the magnetic separation Zhao prerinse Zhao degree of depth is cleaned the Zhao light impurities and is separated
1, magnetic separation: conveyer belt starts the Zhao magnetic separator and starts, arrive lower position switch and stop Zhao coil electricity generation magnetic force, beginning magnetic separation Zhao timer initiation, it is up that arrival setting-up time Zhao conveyer belt stops the Zhao magnetic separator, hopper starts Zhao magnetic separator Zhao and arrives upper limit position switch, coil blackout Zhao ferromagnetism impurity falls into hopper, and magnetic separation finishes.
2, prerinse: clean by nozzle before the aluminium bits arrive liquid level.
3, the degree of depth is cleaned: the aluminium bits carry out self-cleaning by pneumatic stirring after arriving in the cleaning agent.Greasy dirt adopts centrifugation and firing method more in other technologies, shortcoming: the centrifugation oil removing is not thorough; Firing method oil stain decomposition product in combustion process produces more impurity together with the reaction of aluminium bits, and performance is exerted an influence.
4, pneumatic stirring: between cell body bottom and conveyer belt, the even gas distribution of compressed air hose with holes is arranged, make and roll mutually by the aluminium bits friction greasy dirt is easier to remove, make light impurities from the aluminium bits, float simultaneously, discharge from overfall.
5, light impurities separates: adopt air supporting and wet cleaning process to carry out simultaneously in this technology, light impurities such as plastics, wooden unit, rubber float from the aluminium bits, discharge from overfall, separate with the aluminium bits, meanwhile, earth and dust etc. is deposited to bottom land, periodic cleaning, this method is the little light material of partition density fully, and simple and easy to do.Adopt floatation also to claim wet cleaning process in other technologies, this method is to be suspension media with water, and utilize buoyancy of water that the light material that is mingled with in the waste material is separated with the aluminium material and taken away by the water of constant current speed, to also have pneumatic concentration in addition be the effect that utilizes air-flow, and the non-metallic inclusions such as paper scrap, plastic sheeting, wooden unit and dust that aluminium and aluminium alloy and density is less separate.This method has following shortcoming: a, causes secondary pollution, separates not thorough; B, wind speed control bad meeting and take away a part of aluminium bits.Therefore the separation of this technology light impurities is more thorough as can be known, does not have air supporting in other technologies.
B. centrifugal dehydration and take off Residual oil: produce centrifugal force by centrifugal force field, make aluminium bits surface moisture and Residual oil its separate.The centrifuge that this operation is used comprises rotary drum, is provided with motor, transmission system, axis system and tubular screen cloth unit in the rotary drum.
Advantage is: screen cloth and main shaft can both rotate and also direction of rotation opposite, make aluminium bits, water and Residual oil all can produce centrifugal force, once be separable thoroughly, separative efficiency is high, and the bits material can not stop up screen cloth, not fragile, long service life.
C. pulverize: this operation is used eddy mill, is made up of blade, rotor, liner plate, support, belt pulley, motor.Eddy mill is done the main type of cooling with water-cooled.This operation is that raw material is processed into ball aluminum powder with the aluminium bits, and the aluminium bits are pulverized in ultrasonic vortex and dither effect that comprehensive utilization impulsive force, shearing force, blade produce.
D. screening: adopt and revolve the sieve that shakes, sieve.Principle: vibrating motor is the two ends weight of pacifying up and down, the weight imbalance, and motor rotatablely moved is divided into level, vertical, the three-dimensional motion of tilting, and passes to compass screen surface again.Change the weight phase angle and can change aluminium bits direction of motion on compass screen surface.
Advantage: 1. compare the collection self-cleaning with similar technology, light impurities separates, air supporting and pneumatic the stirring in one.
2. increase prerinse makes cleaning carry out at twice, and oil removing is more thorough.3. increasing magnetic separator makes ferromagnetism impurity thoroughly separate.4. simple for process, workable.
E. secondary is pulverized: to big grain aluminium powder remaining after sieving, and the pulverizing of carrying out again, identical with pulverizing process.
F. polishing: use mechanical polishing method, adopt the principle of gradually carefully swiping, use more and more littler scraping to handle and remove the outer surface scratch, up to the scratch that is invisible to the naked eye.Add stearic acid, it and aluminium were considered ratio to be worth doing 1: 10, act as grinding aid and anti-attrition.
The specific embodiment
The present invention will be further described in conjunction with the specific embodiment.
Process route of the present invention is: the pneumatic stirring Zhao of the magnetic separation Zhao prerinse Zhao degree of depth is cleaned the Zhao light impurities and is separated the Zhao centrifugal dehydration and take off Residual oil Zhao pulverizing Zhao classification Zhao pulverizing Zhao polishing Zhao drying
A. aluminium is considered pretreating process to be worth doing:
The pneumatic stirring Zhao of the magnetic separation Zhao prerinse Zhao degree of depth is cleaned the Zhao light impurities and is separated
1, magnetic separation: conveyer belt starts the Zhao magnetic separator and starts, arrive lower position switch and stop Zhao coil electricity generation magnetic force, beginning magnetic separation Zhao timer initiation, it is up that arrival setting-up time Zhao conveyer belt stops the Zhao magnetic separator, hopper starts Zhao magnetic separator Zhao and arrives upper limit position switch, coil blackout Zhao ferromagnetism impurity falls into hopper, and magnetic separation finishes.Be not to adopt hopper and timer in other magnetic separation process, ferromagnetism impurity falls into conveyer belt and increases investment, and is not easy to operate.
2, prerinse: clean by nozzle before the aluminium bits arrive liquid level.
3, the degree of depth is cleaned: the aluminium bits carry out self-cleaning by pneumatic stirring after arriving in the cleaning agent.Greasy dirt adopts centrifugation and firing method more in other technologies, shortcoming: the centrifugation oil removing is not thorough; Firing method oil stain decomposition product in combustion process produces more impurity together with the reaction of aluminium bits, and performance is exerted an influence.
4, pneumatic stirring: between cell body bottom and conveyer belt, the even gas distribution of compressed air hose with holes is arranged, make and roll mutually by the aluminium bits friction greasy dirt is easier to remove, make light impurities from the aluminium bits, float simultaneously, discharge from overfall.
5, light impurities separates: adopt air supporting and wet cleaning process to carry out simultaneously in this technology, light impurities such as plastics, wooden unit, rubber float from the aluminium bits, discharge from overfall, separate with the aluminium bits, meanwhile, earth and dust etc. is deposited to bottom land, periodic cleaning, this method is the little light material of partition density fully, and simple and easy to do.Adopt floatation also to claim wet cleaning process in other technologies, this method is to be suspension media with water, and utilize buoyancy of water that the light material that is mingled with in the waste material is separated with the aluminium material and taken away by the water of constant current speed, to also have pneumatic concentration in addition be the effect that utilizes air-flow, and the non-metallic inclusions such as paper scrap, plastic sheeting, wooden unit and dust that aluminium and aluminium alloy and density is less separate.This method has following shortcoming: a, causes secondary pollution, separates not thorough; B, wind speed control bad meeting and take away a part of aluminium bits.Therefore the separation of this technology light impurities is more thorough as can be known, does not have air supporting in other technologies.
B. centrifugal dehydration and take off Residual oil: produce centrifugal force by centrifugal force field, make aluminium bits surface moisture and Residual oil its separate.The centrifuge that this operation is used comprises rotary drum, is provided with motor, transmission system, axis system and tubular screen cloth unit in the rotary drum; Screen cloth socket main shaft, screen cloth and main shaft cooperate formation annular release space, and two ends, annular release space are made as charging aperture and discharging opening respectively; Motor drives the screen cloth unit by gear unit and main axle unit all rotates around same axis, and direction is opposite; The aluminium bits enter from charging aperture, and water and Residual oil pass screen cloth under centrifugal action, be separated outside the screen cloth, and aluminium is considered to be worth doing from discharge hole for discharge.
Advantage is: screen cloth and main shaft can both rotate and also direction of rotation opposite, make aluminium bits, water and Residual oil all can produce centrifugal force, once be separable thoroughly, separative efficiency is high, and the bits material can not stop up screen cloth, not fragile, long service life.
C. pulverize: this operation is used eddy mill, is made up of blade, rotor, liner plate, support, belt pulley, motor.
This operation is that raw material is processed into ball aluminum powder with the aluminium bits, and the aluminium bits are pulverized in ultrasonic vortex and dither effect that comprehensive utilization impulsive force, shearing force, blade produce.The aluminium bits suck pulverizing chamber from charging aperture during work under negative pressure, and the rotation of driven by motor rotor high-speed makes air-flow produce high-speed eddy on liner plate, produce impulsive force, shearing force and grinding the aluminium bits are pulverized.The particle that pulverize in the granulation chamber is a granulated into sphere under impact force action, taken out of discharging opening by air-flow when granularity and circularity reach requirement, is collected.Eddy mill is done the main type of cooling with water-cooled.
D. screening: adopt and revolve the sieve that shakes, sieve.Principle: vibrating motor is the two ends weight of pacifying up and down, the uneven Heng of weight, and motor rotatablely moved is divided into level, vertical, the three-dimensional motion of tilting, and passes to compass screen surface again.Change the weight phase angle and can change aluminium bits direction of motion on compass screen surface.Phase angle: 30 degree-50 degree, precision screening.
Advantage: 1. compare the collection self-cleaning with similar technology, light impurities separates, air supporting and pneumatic the stirring in one.
2. increase prerinse makes cleaning carry out at twice, and oil removing is more thorough.3. increasing magnetic separator makes ferromagnetism impurity thoroughly separate.4. simple for process, workable.
E. secondary is pulverized: to big grain aluminium powder remaining after sieving, and the pulverizing of carrying out again, identical with pulverizing process.
F. polishing: use mechanical polishing method, adopt the principle of gradually carefully swiping, use more and more littler scraping to handle and remove the outer surface scratch, up to the scratch that is invisible to the naked eye.Add stearic acid, it and aluminium were considered ratio to be worth doing 1: 10, act as grinding aid and anti-attrition.
Claims (15)
1. the technology of using aluminum skimming to prepare aluminum powder, process route of the present invention is: magnetic separation-prerinse-pneumatic stirring-degree of depth cleaning-light impurities separation-centrifugal dehydration and take off Residual oil-pulverizing-classification-secondary pulverizing-polishing-drying.
2. according to the described using aluminum skimming to prepare aluminum powder technology of claim 1, it is characterized in that: described magnetic separation process is, conveyer belt startup-magnetic separator starts, arrive lower position switch to stop-coil electricity generation magnetic force, beginning magnetic separation timer initiation, arrive setting-up time-conveyer belt to stop-magnetic separator is up, hopper startup-magnetic separator-arrival upper limit position switch, coil blackout-ferromagnetism impurity falls into hopper, and magnetic separation finishes.
3. according to the described using aluminum skimming to prepare aluminum powder technology of claim 1, it is characterized in that: clean by nozzle before the aluminium bits arrive liquid level in the prerinse operation.
4. according to the described using aluminum skimming to prepare aluminum powder technology of claim 1, it is characterized in that: in the degree of depth matting, after the aluminium bits arrive cleaning agent, carry out self-cleaning by pneumatic stirring.
5. according to the described using aluminum skimming to prepare aluminum powder technology of claim 1, it is characterized in that: in the pneumatic agitating procedure, between cell body bottom and conveyer belt, the even gas distribution of compressed air hose with holes is arranged, make and roll aluminium bits mutually the friction greasy dirt is easier to remove, make light impurities from the aluminium bits, float simultaneously, discharge from overfall.
6. according to the described using aluminum skimming to prepare aluminum powder technology of claim 1, it is characterized in that: during light impurities separates, adopt air supporting and wet cleaning process to carry out simultaneously, light impurities such as plastics, wooden unit, rubber float from the aluminium bits, discharge from overfall, separate with the aluminium bits.
7. according to the described using aluminum skimming to prepare aluminum powder technology of claim 1, it is characterized in that: centrifugal dehydration and taking off in the Residual oil operation, produce centrifugal force by centrifugal force field, make aluminium bits surface moisture and Residual oil its separate.
8. according to the described using aluminum skimming to prepare aluminum powder technology of claim 1, it is characterized in that: pulverizing process is that raw material is processed into ball aluminum powder with the aluminium bits, and the aluminium bits are pulverized in ultrasonic vortex and dither effect that comprehensive utilization impulsive force, shearing force, blade produce; The aluminium bits suck pulverizing chamber from charging aperture during work under negative pressure, and the rotation of driven by motor rotor high-speed makes air-flow produce high-speed eddy on liner plate, produce impulsive force, shearing force and grinding the aluminium bits are pulverized; The particle that pulverize in the granulation chamber is a granulated into sphere under impact force action, taken out of discharging opening by air-flow when granularity and circularity reach requirement, is collected.
9. according to the described using aluminum skimming to prepare aluminum powder technology of claim 7, it is characterized in that: pulverizing process uses eddy mill, is made up of blade, rotor, liner plate, support, belt pulley, motor.
10. according to the described using aluminum skimming to prepare aluminum powder technology of claim 7, it is characterized in that: eddy mill is done the main type of cooling with water-cooled.
11. according to the described using aluminum skimming to prepare aluminum powder technology of claim 1, it is characterized in that: the screening operation adopts revolves the sieve that shakes, and sieves.
12., it is characterized in that according to the described using aluminum skimming to prepare aluminum powder technology of claim 11: revolving the up and down two ends weight of pacifying of sieve vibrating motor that shakes, the weight imbalance, motor rotatablely moved is divided into level, vertical, the three-dimensional motion of tilting, and passes to compass screen surface again.Change the weight phase angle and can change aluminium bits direction of motion on compass screen surface.
13., it is characterized in that according to the described using aluminum skimming to prepare aluminum powder technology of claim 1: the big grain aluminium powder of secondary pulverizing process to being left after sieving, the pulverizing of carrying out again, identical with pulverizing process.
14. according to the described using aluminum skimming to prepare aluminum powder technology of claim 1, it is characterized in that: polishing process adopts mechanical polishing method, according to the principle of gradually carefully swiping, uses more and more littler scraping to handle and removes the outer surface scratch, up to the scratch that is invisible to the naked eye.
15., it is characterized in that: added stearic acid and aluminium bits ratio 1: 10, and act as grinding aid and anti-attrition according to the described using aluminum skimming to prepare aluminum powder technology of claim 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103093774A CN101693296B (en) | 2009-11-06 | 2009-11-06 | Process of using aluminum chip to prepare aluminum powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103093774A CN101693296B (en) | 2009-11-06 | 2009-11-06 | Process of using aluminum chip to prepare aluminum powder |
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| Publication Number | Publication Date |
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| CN101693296A true CN101693296A (en) | 2010-04-14 |
| CN101693296B CN101693296B (en) | 2011-02-02 |
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| CN2009103093774A Active CN101693296B (en) | 2009-11-06 | 2009-11-06 | Process of using aluminum chip to prepare aluminum powder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506628A (en) * | 2013-10-11 | 2014-01-15 | 上海交通大学 | Nano-structure metal powder and preparation method thereof |
| CN106925409A (en) * | 2017-05-05 | 2017-07-07 | 山东致才颜料科技股份有限公司 | A kind of production of aluminum powder device |
| CN110257632A (en) * | 2019-06-24 | 2019-09-20 | 王佳明 | A kind of aluminium alloy recovery and treatment method |
-
2009
- 2009-11-06 CN CN2009103093774A patent/CN101693296B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506628A (en) * | 2013-10-11 | 2014-01-15 | 上海交通大学 | Nano-structure metal powder and preparation method thereof |
| CN106925409A (en) * | 2017-05-05 | 2017-07-07 | 山东致才颜料科技股份有限公司 | A kind of production of aluminum powder device |
| CN110257632A (en) * | 2019-06-24 | 2019-09-20 | 王佳明 | A kind of aluminium alloy recovery and treatment method |
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| Publication number | Publication date |
|---|---|
| CN101693296B (en) | 2011-02-02 |
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Owner name: CHONGQING DAIKA JIELI WHEEL MANUFACTURING CO., LTD Free format text: FORMER OWNER: CITIC DICASTAL WHEEL MANUFACTURING CO., LTD. Effective date: 20121114 |
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Free format text: CORRECT: ADDRESS; FROM: 066003 QINHUANGDAO, HEBEI PROVINCE TO: 400051 JIULONGPO, CHONGQING |
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Effective date of registration: 20121114 Address after: 400051 Chongqing Jiulongpo District Xi Peng Zhen Xi Zhu Road 2 first storey building 6-10 No. Patentee after: CHONGQING DAIKA JIELI WHEEL MANUFACTURING CO., LTD. Address before: 066003 No. 355, Donggang Road, seaport District, Qinhuangdao, Hebei Patentee before: Dicastal Wheel Manufacturing Co., Ltd. |