CN115319645A - Device for recycling waste rare earth polishing powder and using method thereof - Google Patents
Device for recycling waste rare earth polishing powder and using method thereof Download PDFInfo
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- CN115319645A CN115319645A CN202211143211.1A CN202211143211A CN115319645A CN 115319645 A CN115319645 A CN 115319645A CN 202211143211 A CN202211143211 A CN 202211143211A CN 115319645 A CN115319645 A CN 115319645A
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- 238000005498 polishing Methods 0.000 title claims abstract description 84
- 239000000843 powder Substances 0.000 title claims abstract description 70
- 239000002699 waste material Substances 0.000 title claims abstract description 63
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 55
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 55
- 238000004064 recycling Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 17
- 239000006185 dispersion Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 31
- 230000005855 radiation Effects 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 14
- 238000009210 therapy by ultrasound Methods 0.000 abstract description 3
- 238000007670 refining Methods 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract 4
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 17
- 238000007599 discharging Methods 0.000 description 14
- 239000011521 glass Substances 0.000 description 11
- 239000000243 solution Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000035939 shock Effects 0.000 description 5
- 239000011259 mixed solution Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000007517 polishing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B57/00—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- 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
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Disintegrating Or Milling (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a device for recycling waste rare earth polishing powder and a using method thereof, and provides the following technical scheme: the ultrasonic kettle comprises an ultrasonic kettle, wherein a motor is arranged at the end part of the ultrasonic kettle, a dispersion disc is arranged at the end part of the motor in a driving manner, and the dispersion disc is positioned in the ultrasonic kettle; the ultrasonic assembly is communicated and connected with the inside of the ultrasonic kettle; the constant pressure component comprises a pressure regulating valve, an air compressor and an air bottle which are sequentially connected, and the pressure regulating valve is in conductive connection with the ultrasonic kettle; the waste discharge assembly is connected with the opening and closing of the ultrasonic kettle, and has the following technical effects: through adding the ultrasonic assembly, can play the effect of washing, dispersion abandonment tombarthite polishing powder granule, can play the effect of broken, refining polishing powder granule simultaneously, be of value to the homogeneity that improves polishing powder granule particle diameter to be favorable to the polishing powder granule to form sharp-pointed shape after the ultrasonic treatment, improve the polishing efficiency when recycling.
Description
Technical Field
The invention relates to the field of polishing powder recovery, in particular to a device for recovering waste rare earth polishing powder and a using method thereof.
Background
The rare earth polishing material has become an irreplaceable fine polishing material in the field of precision polishing due to unique physical and chemical characteristics and excellent polishing performance, and is widely applied to the fields of optical glass, electronic glass, glass ornaments, precision instruments and the like at present. However, a large amount of waste polishing powder and polishing solution are generated during the polishing process, wherein the waste residues of the rare earth polishing powder mainly comprise massive waste materials adhered to the polishing equipment and oversize materials at the circulating filtration part, the waste rare earth polishing solution contains glass powder particles ground and polished, impurities fallen from the polishing millstone, oil stains mixed in the machine table and other impurities, and the polishing powder particles are coated by the impurities to form aggregates, so that the contact between the glass surface and the polishing powder particles is prevented, the polishing efficiency and the quality are directly greatly reduced, and the waste rare earth polishing powder is formed. If the waste rare earth polishing powder is not recycled, a large amount of rare earth resources are wasted.
In order to recover the waste rare earth polishing powder, a chemical method recovery technology is generally adopted in the industry, a large amount of chemical agents are needed, complex processes such as high-temperature roasting are needed, the problems of environmental pollution and the like are easily caused, the physical properties of the recovered rare earth polishing powder are greatly reduced, and the expected use effect cannot be achieved when the recovered rare earth polishing powder is reused.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a device for recovering waste rare earth polishing powder and a using method thereof, which can recover the waste rare earth polishing powder, ensure the physical characteristics of the waste rare earth polishing powder when the waste rare earth polishing powder is reused and ensure the using effect.
In order to achieve the purpose, the invention provides the following technical scheme:
an apparatus for recycling waste rare earth polishing powder, comprising: the ultrasonic kettle is characterized in that a motor is arranged at the end part of the ultrasonic kettle, a dispersion disc is arranged at the end part of the motor in a driving manner, and the dispersion disc is positioned inside the ultrasonic kettle; the ultrasonic assembly is communicated and connected with the inside of the ultrasonic kettle; the constant pressure assembly comprises a pressure regulating valve, an air compressor and an air bottle which are sequentially connected, and the pressure regulating valve is in conduction connection with the ultrasonic kettle; and the waste discharge assembly is connected with the ultrasonic kettle in an opening and closing manner.
Adopt above-mentioned technical scheme, the motor drive dispersion impeller rotates, can keep the tombarthite polishing powder mixed solution in the supersound cauldron in evenly distributed's state, the constant voltage subassembly is used for keeping being in the pressure of the supersound subassembly work of being convenient for in the supersound cauldron, and then can utilize the cavitation effect that the ultrasonic wave produced in the liquid, the water jet, characteristic dispersion polishing powder conglomeration such as shock wave, and the separation is attached to the impurity such as glass miropowder, gel, greasy dirt on tombarthite polishing powder particle surface, the subassembly of wasting discharge is used for the supersound cauldron of impurity discharge with the separation.
Further, the supersound subassembly is a plurality of, every supersound subassembly includes ultrasonic power supply, ultrasonic transducer and sound wave radiation end, ultrasonic transducer is connected with the ultrasonic power supply electricity, and ultrasonic transducer passes through the flange to be fixed on the lateral wall of supersound cauldron, the inside at ultrasonic transducer's tip and penetrating supersound cauldron is fixed to the sound wave radiation end.
By adopting the technical scheme, the ultrasonic transducer converts electric energy into ultrasonic energy, ultrasonic operation is carried out on liquid contacting the ultrasonic energy through the sound wave radiation end, and sufficient impurity removal can be carried out on the waste rare earth polishing powder mixed solution under the cooperation of the plurality of ultrasonic assemblies.
Further, the supersound subassembly includes the supersound cavity, the one end of supersound cavity pass through the pipeline with supersound cauldron turn-on connection, the other end passes through the tube coupling and is provided with the circulating pump, circulating pump and supersound cauldron turn-on connection to liquid circulates between supersound cauldron and supersound cavity in the realization supersound cauldron.
Adopt above-mentioned technical scheme, with supersound subassembly and supersound cauldron separation setting, can introduce the supersound cavity through the mixed solution of circulating pump in with the supersound cauldron to the realization can carry out the supersound operation in the less supersound cavity of volume under the unchangeable circumstances of mixed solution content in guaranteeing the supersound cauldron, can improve the fineness of supersound operation.
Further, a plurality of ultrasonic transducers are sequentially arranged on the side wall of the ultrasonic cavity, each ultrasonic transducer is electrically connected with an ultrasonic power supply, and the end part of each ultrasonic transducer is provided with a sound wave radiation end which penetrates into the ultrasonic cavity.
By adopting the technical scheme, the ultrasonic transducers are matched with the sound wave radiation end, and ultrasonic operation can be carried out in the ultrasonic cavity.
Further, the waste discharge assembly comprises a plurality of blow-down valves, the plurality of blow-down valves are sequentially communicated and arranged on the side wall of the ultrasonic kettle, and the outflow ends of the plurality of blow-down valves are connected in parallel through pipelines and are led out.
By adopting the technical scheme, the drain valves which are arranged in sequence can sequentially discharge the layered impurities in the ultrasonic kettle due to standing and sedimentation.
Further, the waste discharge assembly further comprises a discharge valve, and the discharge valve is arranged under the ultrasonic kettle.
By adopting the technical scheme, the discharge valve can discharge the rare earth polishing powder meeting the recovery conditions.
The invention provides a using method applied to the technical scheme, which comprises the following steps:
s1: pouring the waste rare earth polishing solution into an ultrasonic kettle, keeping the highest liquid level of the waste rare earth polishing solution higher than the highest sound wave radiation end of the installation position, and then sealing the ultrasonic kettle;
s2: starting an external air compressor, and maintaining the internal pressure of the ultrasonic kettle at 0.3MPa by adjusting a pressure regulating valve;
s3: starting an ultrasonic power supply and a stirring motor, and keeping the ultrasonic power supply driving an ultrasonic transducer and the stirring motor working for 90min;
s4: turning off the ultrasonic power supply and the stirring motor, and keeping the liquid in the ultrasonic kettle standing and settling for 20 hours;
s5: opening the drain valve with the highest installation position, closing the drain valve when no waste liquid flows out, and sequentially carrying out the same operation on the drain valves below;
s6: adding clear water into the ultrasonic kettle, and repeating S1-S5;
s7: and opening a discharge valve to discharge the rare earth polishing powder which meets the recovery requirement and is settled at the bottom of the ultrasonic kettle.
Further, when the ultrasonic assembly comprises a circulating pump in S3, the circulating pump is started while the ultrasonic power supply and the stirring motor are started, and the circulating pump is synchronously turned off in S4.
In conclusion, the invention has the following beneficial effects:
1. by adding the ultrasonic assembly and utilizing the characteristics of cavitation effect, water jet, shock wave and the like generated in liquid by ultrasonic, the effects of cleaning and dispersing the waste rare earth polishing powder particles can be achieved, so that impurities such as glass micro powder, gel, oil stain and the like attached to the surface of the rare earth polishing powder fall off, and clean rare earth polishing powder particles are exposed;
2. after impurities on the surface of the waste rare earth polishing powder are separated, the ultrasonic treatment can break and refine the particles of the polishing powder, is beneficial to improving the uniformity of the particle size of the polishing powder, is beneficial to forming sharp shapes of the polishing powder particles after ultrasonic treatment, and improves the polishing efficiency during recycling.
Drawings
FIG. 1 is a schematic view of the whole apparatus of example 1;
FIG. 2 is a schematic view of the inside of the apparatus of example 1;
FIG. 3 is an overall schematic view of the apparatus of example 2;
FIG. 4 is a cross-sectional view of the apparatus of example 2;
FIG. 5 is a schematic view of a first arrangement of a filter screen;
fig. 6 is a schematic layout of the second filter screen.
Reference numerals are as follows: 1. an ultrasonic kettle; 2. a motor; 3. a dispersion tray; 4. an ultrasonic assembly; 5. a constant voltage component; 6. A pressure regulating valve; 7. an air compressor; 8. a gas cylinder; 9. a waste discharge assembly; 10. an ultrasonic power supply; 11. an ultrasonic transducer; 12. an acoustic wave radiating end; 13. an ultrasonic cavity; 14. a circulation pump; 15. a blowoff valve; 16. discharge valve 17, filter screen one, 18, inlet pipe, 19, filter screen two.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications without inventive contribution to the present embodiment as required after reading the present specification, but all of them are protected by patent law within the scope of the present invention.
Example 1:
referring to fig. 1 and 2, an apparatus for recycling waste rare earth polishing powder includes: the ultrasonic kettle 1 is a cylindrical container and can bear 1MPa of air pressure, a motor 2 is arranged at the upper end of the ultrasonic kettle 1, a dispersion disc 3 is arranged at the end of the motor 2 penetrating into the ultrasonic kettle 1 in a driving mode, the connection position of the motor 2 and the ultrasonic kettle 1 is connected through a sealing flange, paddle-shaped protrusions are arranged on the surface and the edge of the dispersion disc 3 and used for uniformly distributing liquid containing different components in the ultrasonic kettle 1 after stirring, an ultrasonic assembly 4 used for carrying out ultrasonic operation on the liquid in the ultrasonic kettle 1 is further arranged on the ultrasonic kettle 1, the ultrasonic assembly 4 comprises two ultrasonic transducers 11 which are arranged on the outer surface of the ultrasonic kettle 1 in an up-and-down staggered mode, the end of each ultrasonic transducer 11 extends into the ultrasonic kettle 1 to be connected with a sound wave radiation end 12 used for carrying out operation on the liquid in the ultrasonic kettle 1, when the sound wave radiation end 12 works in the liquid, through the characteristics of cavitation effect, water jet, impact wave and the like generated in the liquid, the ultrasonic transducer, polishing powder aggregates are dispersed, and oil stains attached to the surfaces of rare earth polishing powder particles are separated, each ultrasonic transducer 11 is connected with an ultrasonic power supply 10-6 electric signals, and the frequency of 10-6 KW.
Referring to fig. 1 and fig. 2, in order to ensure the working effect of the ultrasonic assembly 4, the ultrasonic kettle 1 is further connected with a constant pressure assembly 5 for ensuring the constant air pressure therein, the constant pressure assembly 5 comprises a pressure regulating valve 6, an air compressor 7 and a gas cylinder 8 which are sequentially connected, the pressure regulating valve 6 is in conduction connection with the ultrasonic kettle 1, the air pressure in the ultrasonic kettle 1 can be controlled by adjusting the pressure regulating valve 6, the air compressor 7 and the gas cylinder 8, and the air pressure of 0-0.5MPa can be formed in the ultrasonic kettle 1 by matching the air compressor 7 and the gas cylinder 8.
Referring to fig. 1 and fig. 2, a waste discharging assembly 9 for discharging waste solution in the ultrasonic kettle 1 is further arranged on the side wall of the ultrasonic kettle 1, the waste discharging assembly 9 is connected with the ultrasonic kettle 1 through valve opening and closing, the waste discharging assembly 9 comprises a plurality of blow-down valves 15, the blow-down valves 15 are sequentially communicated and arranged on the side wall of the ultrasonic kettle 1, the outflow ends of the blow-down valves 15 are connected in parallel and led out through pipelines, the interval between every two blow-down valves 15 is 150-200mm, the waste discharging assembly 9 further comprises a discharging valve 16, and the discharging valve 16 is arranged under the ultrasonic kettle 1.
On the basis of the device for recovering the waste rare earth polishing powder, the use method applied to the equipment is provided:
s1: pouring the waste rare earth polishing solution into the ultrasonic kettle 1, keeping the highest liquid level of the waste rare earth polishing solution higher than the sound wave radiation end 12 with the highest installation position, and then sealing the ultrasonic kettle 1;
s2: starting an external air compressor 7, and maintaining the internal pressure of the ultrasonic kettle 1 at 0.3MPa by adjusting a pressure regulating valve 6;
s3: the ultrasonic power supply 10 and the stirring motor 2 are started, the ultrasonic power supply 10 drives the ultrasonic transducer 11 and the stirring motor 2 to work for 90min, when the ultrasonic power supply 10 drives the ultrasonic transducer 11 to work, the sound wave radiation end 12 disperses polishing powder aggregates by utilizing the characteristics of cavitation effect, water jet, shock wave and the like generated by ultrasonic waves in liquid, separates impurities such as glass micropowder, gel, oil stain and the like attached to the surface of rare earth polishing powder particles, can homogenize the particle size of the rare earth polishing powder particles under the ultrasonic action, and forms the passivated polishing powder particles into sharp and sharp corners again.
S4: and (3) turning off the ultrasonic power supply 10 and the stirring motor 2, keeping the liquid in the ultrasonic kettle 1 standing and settling for 20h, and layering the separated impurities such as glass micropowder, gel, oil stain and the like after settling in the ultrasonic kettle 1 according to different densities.
S5: open the blowoff valve 15 that the mounted position is highest, close this blowoff valve 15 when no waste liquid flows out to carry out same operation to below blowoff valve 15 in proper order, with the impurity of layering discharge in proper order.
S6: adding clear water into the ultrasonic kettle 1, and repeating S1-S5;
s7: and opening a discharge valve 16 to discharge the rare earth polishing powder which meets the recovery requirement and is settled at the bottom of the ultrasonic kettle 1.
Example 2:
referring to fig. 3 and 4, an apparatus for recycling waste rare earth polishing powder includes: the ultrasonic kettle 1 is a cylindrical container which can bear 1MPa of air pressure, the upper end part of the ultrasonic kettle 1 is provided with a motor 2, the end part of the motor 2 penetrates into the ultrasonic kettle 1 and is provided with a dispersion disc 3 in a driving way, the joint of the motor 2 and the ultrasonic kettle 1 is connected by a sealing flange, the surface and the edge of the dispersion disc 3 are provided with paddle-shaped bulges and are used for uniformly distributing liquid containing different components in the ultrasonic kettle 1 after stirring, the side edge of the ultrasonic kettle 1 is provided with an ultrasonic assembly 4 for carrying out ultrasonic operation on the liquid in the ultrasonic assembly 4, the ultrasonic assembly 4 comprises an outer frame, an ultrasonic cavity 13 is arranged in the outer frame, one end of the ultrasonic cavity 13 is in conduction connection with the ultrasonic kettle 1 through a pipeline, the other end of the ultrasonic cavity is provided with a circulating pump 14 through pipeline connection and is in conduction with a water inlet of the circulating pump, the water outlet of the circulating pump 14 is in conduction connection with the ultrasonic kettle 1 through a pipeline, in order to realize the circulation of liquid in the ultrasonic kettle 1 between the ultrasonic kettle 1 and the ultrasonic cavity 13, a sealing valve is arranged at the connection part of a pipeline and the ultrasonic kettle 1, a plurality of ultrasonic transducers 11 are sequentially arranged on the side wall of the ultrasonic cavity 13, each ultrasonic transducer 11 is electrically connected with an ultrasonic power supply 10, the end part of each ultrasonic transducer 11 is provided with a sound wave radiation end 12, the sound wave radiation end 12 penetrates into the ultrasonic cavity 13, polished powder aggregates are dispersed through the characteristics of cavitation effect, water jet, impact wave and the like generated in the liquid, and impurities such as glass micro powder, gel, oil stain and the like attached to the surface of rare earth polished powder particles are separated, each ultrasonic transducer 11 is connected with an ultrasonic power supply 10 for supplying power to the ultrasonic transducer, in the embodiment, the ultrasonic power supply 10 selects an electric signal frequency of 18-60kHz, and the power of 1K-2KW.
Referring to fig. 3 and 4, in order to ensure the working effect of the ultrasonic assembly 4, the ultrasonic kettle 1 is further connected with a constant pressure assembly 5 for ensuring the constant air pressure therein, the constant pressure assembly 5 comprises a pressure regulating valve 6, an air compressor 7 and an air bottle 8 which are sequentially connected, the pressure regulating valve 6 is in conduction connection with the ultrasonic kettle 1, the air pressure in the ultrasonic kettle 1 can be controlled by adjusting the pressure regulating valve 6, the air compressor 7 and the air bottle 8, and the air pressure of 0-0.5MPa can be formed in the ultrasonic kettle 1.
Referring to fig. 3 and 4, a waste discharging assembly 9 for discharging waste solution in the ultrasonic kettle 1 is further arranged on the side wall of the ultrasonic kettle 1, the waste discharging assembly 9 is connected with the ultrasonic kettle 1 through opening and closing of a valve, the waste discharging assembly 9 comprises a plurality of blow-down valves 15, the blow-down valves 15 are sequentially communicated and arranged on the side wall of the ultrasonic kettle 1, the outflow ends of the blow-down valves 15 are parallelly connected and led out through pipelines, the interval between every two blow-down valves 15 is 150-200mm, the waste discharging assembly 9 further comprises a discharging valve 16, and the discharging valve 16 is arranged under the ultrasonic kettle 1.
On the basis of the device for recovering the waste rare earth polishing powder, the use method applied to the equipment is provided:
s1: pouring the waste rare earth polishing solution into the ultrasonic kettle 1, keeping the highest liquid level of the waste rare earth polishing solution higher than the sound wave radiation end 12 with the highest installation position, and then sealing the ultrasonic kettle 1;
s2: starting an external air compressor 7, and maintaining the internal pressure of the ultrasonic kettle 1 at 0.3MPa by adjusting a pressure regulating valve 6;
s3: the ultrasonic power supply 10, the stirring motor 2 and the circulating pump 14 are started, the ultrasonic power supply 10 drives the ultrasonic transducer 11 and the stirring motor 2 to work for 90min, when the ultrasonic power supply 10 drives the ultrasonic transducer 11 to work, the sound wave radiation end 12 disperses polishing powder aggregates by utilizing the characteristics of cavitation effect, water jet, shock wave and the like generated by ultrasonic waves in liquid, separates impurities such as glass micropowder, gel, oil stain and the like attached to the surface of rare earth polishing powder particles, can homogenize the particle size of the rare earth polishing powder particles under the ultrasonic action, and forms the passivated polishing powder particles into sharp and sharp corners again.
S4: and (2) closing the ultrasonic power supply 10 and the stirring motor 2, then closing a sealing valve at the joint of the ultrasonic cavity 13 and the ultrasonic kettle 1, after the circulating pump 14 pumps the residual liquid in the ultrasonic cavity 13 into the ultrasonic kettle 1, closing the other sealing valve, simultaneously closing the circulating pump 14, keeping the liquid in the ultrasonic kettle 1 standing and settling for 20 hours, and layering the separated impurities such as glass micropowder, gel, oil stain and the like after settling in the ultrasonic kettle 1 according to different densities.
S5: and opening the drain valve 15 with the highest mounting position, closing the drain valve 15 when no waste liquid flows out, and sequentially carrying out the same operation on the drain valves 15 below so as to sequentially discharge layered impurities.
S6: adding clear water into the ultrasonic kettle 1, and repeating S1-S5;
s7: and opening a discharge valve 16 to discharge the rare earth polishing powder which meets the recovery requirement and is settled at the bottom of the ultrasonic kettle 1.
Example 3:
referring to fig. 5 and 6, the present embodiment is different from embodiment 2 in that a first filter screen 17 is installed between the sound wave radiation ends 12 and a second filter screen 19 is installed at the periphery of the feeding pipe 18 of the ultrasonic kettle 1; the two filter screens can be metal or nonmetal. Wherein: the second filter screen 19 is used to prevent large particle impurities or polishing powder particles from being mixed in, and the surface of the polished object is scratched in the polishing process. The metal filter screen with the preferable filter screen has the advantages that the inserted ultrasonic radiation end is adopted, the ultrasonic radiation end can generate strong shock waves, micro jet and cavitation effects of 360 degrees in liquid, the metal filter screen is also in ultrasonic frequency vibration in the liquid, polishing powder is always in a motion state in the metal filter screen, the metal filter screen is not easy to block, and small particles can rapidly pass through the metal filter screen. Secondly, the cavitation effect generated by the ultrasonic wave can lead the large-particle polishing powder which can not pass through the screen mesh to carry out particle crushing and refining under the action of the ultrasonic wave.
A first filter screen 17 is arranged between the sound wave radiation ends 12, the mesh number of each layer of filter screen can be different, and the mesh number of the filter screens is from small to large along with the inflow direction of the slurry, so that the aim of multi-stage filtration is fulfilled.
Other structures and methods are the same as those in embodiment 2, and are not described herein.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention should also be considered as within the scope of the present invention.
Claims (9)
1. An apparatus for recovering waste rare earth polishing powder, comprising:
the ultrasonic kettle comprises an ultrasonic kettle (1), wherein a motor (2) is arranged at the end part of the ultrasonic kettle (1), a dispersion disc (3) is arranged at the end part of the motor (2) in a driving manner, and the dispersion disc (3) is positioned in the ultrasonic kettle (1);
the ultrasonic component (4), the ultrasonic component (4) is communicated with the inside of the ultrasonic kettle (1);
the constant pressure component (5) comprises a pressure regulating valve (6), an air compressor (7) and an air bottle (8) which are sequentially connected, and the pressure regulating valve (6) is communicated with the ultrasonic kettle (1);
the waste discharge assembly (9), the waste discharge assembly (9) is connected with the ultrasonic kettle (1) in an opening and closing mode.
2. The apparatus for recycling waste rare earth polishing powder according to claim 1, wherein the ultrasonic assembly (4) is plural, each ultrasonic assembly (4) comprises an ultrasonic power supply (10), an ultrasonic transducer (11) and an acoustic radiation end (12), the ultrasonic transducer (11) is electrically connected with the ultrasonic power supply (10), the ultrasonic transducer (11) is fixed on the side wall of the ultrasonic kettle (1) through a flange, and the acoustic radiation end (12) is fixed at the end of the ultrasonic transducer (11) and penetrates into the inside of the ultrasonic kettle (1); a first filter screen (17) is arranged between the sound wave radiation ends (12).
3. The device for recycling the waste rare earth polishing powder according to claim 1, wherein the ultrasonic assembly (4) comprises an ultrasonic cavity (13), one end of the ultrasonic cavity (13) is in conduction connection with the ultrasonic kettle (1) through a pipeline, the other end of the ultrasonic cavity is provided with a circulating pump (14) through a pipeline, and the circulating pump (14) is in conduction connection with the ultrasonic kettle (1) to realize circulation of liquid in the ultrasonic kettle (1) between the ultrasonic kettle (1) and the ultrasonic cavity (13).
4. The apparatus for recycling waste rare earth polishing powder according to claim 3, wherein a plurality of ultrasonic transducers (11) are sequentially arranged on the side wall of the ultrasonic cavity (13), each ultrasonic transducer (11) is electrically connected with an ultrasonic power supply (10), the end of each ultrasonic transducer (11) is provided with a sound wave radiation end (12), and the sound wave radiation end (12) penetrates into the ultrasonic cavity (13).
5. The apparatus for recycling waste rare earth polishing powder according to any one of claims 1 to 4, wherein the waste discharge assembly (9) comprises a plurality of blow-off valves (15), the blow-off valves (15) are sequentially arranged on the side wall of the ultrasonic still (1) in a conducting manner, and the outflow ends of the blow-off valves (15) are connected in parallel through a pipeline and led out.
6. The apparatus for recycling waste rare-earth polishing powder according to claim 5, wherein the waste discharge assembly (9) further comprises a discharge valve (16), and the discharge valve (16) is disposed right below the ultrasonic still (1).
7. The apparatus for recycling waste rare-earth polishing powder according to any one of claims 1 to 4, wherein a second filter screen (19) is provided at the periphery of the feeding pipe (18) of the ultrasonic kettle (1).
8. The use method of the device for recycling waste rare earth polishing powder, which is applied to the device of claim 6, is characterized by comprising the following steps:
s1: pouring the waste rare earth polishing solution into an ultrasonic kettle (1), keeping the highest liquid level of the waste rare earth polishing solution higher than the highest sound wave radiation end (12) of the installation position, and then sealing the ultrasonic kettle (1);
s2: starting an external air compressor (7), and maintaining the internal pressure of the ultrasonic kettle (1) at 0.3MPa by adjusting a pressure regulating valve (6);
s3: starting the ultrasonic power supply (10) and the stirring motor (2), and keeping the ultrasonic power supply (10) driving the ultrasonic transducer (11) and the stirring motor (2) working for 90min;
s4: turning off the ultrasonic power supply (10) and the stirring motor (2), and keeping the liquid in the ultrasonic kettle (1) standing and settling for 20h;
s5: opening the blow-down valve (15) with the highest mounting position, closing the blow-down valve (15) when no waste liquid flows out, and sequentially carrying out the same operation on the blow-down valves (15) below;
s6: adding clear water into the ultrasonic kettle (1), and repeating S1-S5;
s7: and opening a discharge valve (16) to discharge the rare earth polishing powder which meets the recovery requirement and is settled at the bottom of the ultrasonic kettle (1).
9. The use method of the apparatus for recycling waste rare-earth polishing powder according to claim 8, wherein, when the ultrasonic module (4) includes the circulation pump (14) in S3, the circulation pump (14) is turned on simultaneously with turning on of the ultrasonic power supply (10) and the stirring motor (2), and the circulation pump (14) is synchronously turned off in S4.
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