CN106077676A - A kind of processing method of rare earth permanent magnet spent material - Google Patents
A kind of processing method of rare earth permanent magnet spent material Download PDFInfo
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- CN106077676A CN106077676A CN201610523619.XA CN201610523619A CN106077676A CN 106077676 A CN106077676 A CN 106077676A CN 201610523619 A CN201610523619 A CN 201610523619A CN 106077676 A CN106077676 A CN 106077676A
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- rare earth
- permanent magnet
- earth permanent
- wood flour
- magnet spent
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- 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
- B22F9/023—Hydrogen absorption
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- 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
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/005—Separation by a physical processing technique only, e.g. by mechanical breaking
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses the processing method of a kind of rare earth permanent magnet spent material, comprise the steps of 1) high temperature demagnetization, deoil: rare earth permanent magnet spent material is carried out heating and demagnetizes, deoils；2) dry grinding, derust, be ground in beveler, derust；3) waste material screening: use vibrosieve that waste material is sieved；4) decontamination: the waste material collected is mixed in 1:2～1:4 ratio with wood flour, adds in beveler and be ground, to scraped surface without black dirt；5) sieve: waste material separates on the vibrating with wood flour mixture, collect and obtain clean rare earth permanent magnet spent material；6) hydrogen is broken: inhale hydrogen in hydrogen crushing furnace the most broken.The present invention is derusted by mechanical lapping, it is not necessary to adding any soda acid, environmentally friendly, processing cost is low, and yield is high.Being cleaned by dry process, solve traditional handicraft washing and cannot thoroughly remove the problem of material surface ashes impurity, improve scraped surface quality, operation is simple, low cost, and efficiency is high.Processed by sieve powder, wood flour recycling can be realized.
Description
Technical field
The present invention relates to Rare Earth Production field, more specifically, it relates to the processing method of a kind of rare earth permanent magnet spent material.
Background technology
Utilizing rare earth permanent magnet spent material again to produce Nd-Fe-B permanent magnet material is realize rare earth resources cycling and reutilization optimal
Mode, this technology needs not move through a series of flow processs such as excellent molten, the extract and separate of pulverizing, hydrochloric acid, electrolysis, because its handling process is short, dirty
Dye is less, yield is high and the feature such as low cost and be widely popularized.
A large amount of impurity meetings it is known that the production process of rare earth permanent-magnetic material has high requirement to raw material, in waste material
Badly influence quality and the quality of product.Existing method for treatment of waste material can not effectively remove the miscellaneous of rare earth permanent magnet spent material
Matter, result in the reuse ratio of rare earth permanent magnet spent material, comprehensive magnetic can receive the biggest impact, causes the wasting of resources and product
Matter cannot ensure.Therefore, how rare earth permanent magnet spent material is effectively treated to remove impurity therein particularly critical.
Summary of the invention
The technical problem to be solved in the present invention is the above-mentioned deficiency for prior art, it is provided that a kind of rare earth permanent magnet spent material
Processing method,
The technical solution used in the present invention is such that the processing method of a kind of rare earth permanent magnet spent material, comprises the steps of
1) high temperature demagnetization, deoil: in calcination kiln or use spray gun rare earth permanent magnet spent material is heated so that it is at material
More than Curie temperature complete demagnetization；By high temperature sintering, make the burning of scraped surface greasy dirt, carbonization；
2) dry grinding, derust: the rare earth permanent magnet spent material after having processed in step 1 adds in beveler, adds
Dosage is the 1/3～1/2 of beveler volume, is then ground, until scraped surface non-corroding；
3) waste material screening: use vibrosieve that the waste material processed through step 2 is sieved, collect giving up more than mesh size
Material, directly reclaims the Feedstock treating making other operation less than the waste material of mesh size；
4) decontamination: by step 3) waste material collected mixes in 1:2～1:4 ratio with wood flour, adds in beveler and carry out
Grind, to scraped surface without black dirt；
5) sieve: by step 4) described in waste material separate on the vibrating with wood flour mixture, collect obtain clean dilute
Soil permanent magnet spent material；
6) hydrogen is broken: by step 5) described in rare earth permanent magnet spent material inhale in hydrogen crushing furnace hydrogen crush, then at 5～20 eye mesh screens
On sieve process, collect the fine granularity rare earth permanent magnet spent material powder sieved.
Further, step 1) middle rare earth permanent magnet spent material is 400～600 DEG C in temperature range and heats.
Further, step 2) in milling time be 30～60 minutes.
Further, step 4) in wood flour first cross 4～10 mesh sieves and process, wood flour is through wettability treatment.
Further, by weight addition 2～5% water in described wood flour..
Further, step 3) and step 5) in vibrosieve equipped with the screen cloth of 2～4 mesh.
Further, step 4) in the milling time of beveler be 30～60 minutes.
The present invention compared with prior art, has following technical effect that
1, the present invention uses pyrogenic process/dry process, is derusted by mechanical lapping, it is not necessary to add any soda acid, to environment friend
Good, processing cost is low, and yield is high.
2, the present invention passes through wood flour surface adsorption, and solving traditional handicraft washing, cannot thoroughly to remove material surface ashes miscellaneous
The problem of matter, improves scraped surface quality, and operation is simple, low cost, and efficiency is high.
3, the present invention is processed by sieve powder, can isolate small volume, surface area compared with the waste material big, degree of oxidation is high,
Improve the quality of waste material, thus be conducive to producing high-performance rare-earth permanent magnet material, sieve simultaneously and also can realize wood flour weight
Multiple utilization.
4, the present invention is by quick-fried and follow-up processs of sieving of hydrogen, utilize rare earth waste can inhale hydrogen crush, irony, glass, stone
The feature that first-class material is not broken by inhaling hydrogen, can efficiently separate the impurity such as irony, glass, asbestos, improve product purity.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described further.
Embodiment 1
In calcination kiln or use spray gun rare earth permanent magnet spent material is heated temperature range 400 DEG C so that it is at material
More than Curie temperature complete demagnetization；By high temperature sintering, make the burning of scraped surface greasy dirt, carbonization；Add in beveler, add
Dosage is the 1/3 of beveler volume, is then ground, and milling time is 30 minutes, grinds until scraped surface non-corroding；Make
By the vibrosieve equipped with 2 eye mesh screens, waste material is sieved, collect the waste material more than mesh size, less than the waste material of mesh size
Directly reclaim the Feedstock treating making other operation；Use the vibrosieve equipped with 2 eye mesh screens that wood flour is sieved, collect less than sieve
The wood flour of screen distance, this wood flour, by weight the water of addition 2%, makes the slight moistening in wood flour surface, it is therefore an objective to make wood flour have more
Good absorption/cleansing power；The waste material collected is mixed in 1:2 ratio with the wood flour of moistening, adds in beveler and grind
Mill, grinds 30 minutes, to scraped surface without black dirt；Waste material is separated in the vibrosieve equipped with 2 eye mesh screens with wood flour mixture,
Collect and obtain clean rare earth permanent magnet spent material；Rare earth permanent magnet spent material is inhaled in hydrogen crushing furnace hydrogen the most broken, then at 2 eye mesh screens
On sieve process, wherein, impurity is not broken in the broken process of hydrogen and is separated during in screening, collects fine granularity powder, i.e. closes
Lattice rare earth permanent magnet spent material.The present embodiment passes through wood flour surface adsorption, it is possible to remove the ashes impurity of material surface 98.1%, waste material
Surface quality is high, and operation is simple, low cost, and efficiency is high.
Embodiment 2
In calcination kiln or use spray gun rare earth permanent magnet spent material is heated temperature range 600 DEG C so that it is at material
More than Curie temperature complete demagnetization；By high temperature sintering, make the burning of scraped surface greasy dirt, carbonization；Add in beveler, add
Dosage is the 1/2 of beveler volume, is then ground, and milling time is 60 minutes, grinds until scraped surface non-corroding；Make
By the vibrosieve equipped with 4 eye mesh screens, waste material is sieved, collect the waste material more than mesh size, less than the waste material of mesh size
Directly reclaim the Feedstock treating making other operation；Use the vibrosieve equipped with 4 eye mesh screens that wood flour is sieved, collect less than sieve
The wood flour of screen distance, this wood flour, by weight the water of addition 5%, makes the slight moistening in wood flour surface, it is therefore an objective to make wood flour have more
Good absorption/cleansing power；The waste material collected is mixed in 1:4 ratio with wood flour, adds in beveler and be ground, grind
60 minutes, to scraped surface without black dirt；Waste material is separated with wood flour mixture in the vibrosieve equipped with 4 eye mesh screens, collects
To clean rare earth permanent magnet spent material；Rare earth permanent magnet spent material is inhaled in hydrogen crushing furnace hydrogen the most broken, then mistake on 20 eye mesh screens
Sieve processes, and wherein, impurity is not broken in the broken process of hydrogen and is separated when sieving, and collects fine granularity powder, the most qualified dilute
Soil permanent magnet spent material.The present embodiment passes through wood flour surface adsorption, it is possible to removing the ashes impurity of material surface 98.6%, wood flour can weigh
Multiple use.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for a person skilled in the art,
On the premise of without departing from present configuration, it is also possible to make some deformation and improvement, these are implemented all without affecting the present invention
Effect and practical applicability.
Claims (7)
1. the processing method of a rare earth permanent magnet spent material, it is characterised in that comprise the steps of
1) demagnetize, deoil: in calcination kiln or use spray gun rare earth permanent magnet spent material is heated to the Curie temperature of material with
On；
2) dry grinding, derust: the rare earth permanent magnet spent material after having processed in step 1 adds in beveler, addition
For the 1/3～1/2 of beveler volume, then it is ground, until scraped surface non-corroding；
3) waste material sieve powder: use vibrosieve that the waste material processed through step 2 is sieved, collect the waste material more than mesh size；
4) decontamination: by step 3) waste material collected mixes in 1:2～1:4 ratio with wood flour, adds in beveler and be ground,
To scraped surface without black dirt；
5) sieve: by step 4) described in waste material separate on the vibrating with wood flour mixture, collect obtain clean rare earth forever
Magnetic waste material；
6) hydrogen is broken: by step 5) described in rare earth permanent magnet spent material inhale in hydrogen crushing furnace hydrogen crush, then mistake on 5～20 eye mesh screens
Sieve processes, and collects the fine granularity rare earth permanent magnet spent material powder sieved.
The processing method of rare earth permanent magnet spent material the most according to claim 1, it is characterised in that step 1) middle rare earth permanent magnetism give up
Material is 400～600 DEG C in temperature range and heats.
The processing method of rare earth permanent magnet spent material the most according to claim 1, it is characterised in that step 2) in milling time
It it is 30～60 minutes.
The processing method of rare earth permanent magnet spent material the most according to claim 1, it is characterised in that step 4) in wood flour first cross 2
～4 mesh sieve process, wood flour is through wettability treatment.
The processing method of rare earth permanent magnet spent material the most according to claim 4, it is characterised in that in described wood flour by weight
Addition 2～the water of 5%.
The processing method of rare earth permanent magnet spent material the most according to claim 1, it is characterised in that step 3) and step 5) in
Vibrosieve is equipped with the screen cloth of 2～4 mesh.
The processing method of rare earth permanent magnet spent material the most according to claim 1, it is characterised in that step 4) in the grinding of beveler
Time consuming is 30～60 minutes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610523619.XA CN106077676B (en) | 2016-06-30 | 2016-06-30 | A kind of processing method of rare earth permanent magnet spent material |
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| CN201610523619.XA CN106077676B (en) | 2016-06-30 | 2016-06-30 | A kind of processing method of rare earth permanent magnet spent material |
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| CN106077676A true CN106077676A (en) | 2016-11-09 |
| CN106077676B CN106077676B (en) | 2018-04-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107597421A (en) * | 2017-09-30 | 2018-01-19 | 无锡市稀土永磁厂 | The rare earth waste recovering mechanism of uniform blanking |
| CN112430738A (en) * | 2020-11-24 | 2021-03-02 | 内蒙古汉生源科技有限公司 | Treatment method for recycling rare earth permanent magnet waste and electrophoresis equipment |
| CN112853107A (en) * | 2021-01-19 | 2021-05-28 | 连云港高品再生资源有限公司 | Method for treating rare earth permanent magnet waste |
| TWI830540B (en) * | 2022-12-15 | 2024-01-21 | 財團法人工業技術研究院 | Regenerated rare-earth permanent magnet powder and a method for manufacturing the same |
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| JP2004339542A (en) * | 2003-05-13 | 2004-12-02 | Sumitomo Metal Mining Co Ltd | Recycling method for rare earth-transition metal alloy |
| US20050081959A1 (en) * | 2003-10-15 | 2005-04-21 | Kim Andrew S. | Method of preparing micro-structured powder for bonded magnets having high coercivity and magnet powder prepared by the same |
| CN101276667A (en) * | 2008-01-24 | 2008-10-01 | 宁波韵升股份有限公司 | Method and apparatus for stew demagnetizing sintered Nd iron boron permanent magnet |
| CN104801718A (en) * | 2015-05-07 | 2015-07-29 | 安徽万磁电子有限公司 | Recycling process of sintering neodymium iron boron discard black wafer |
| CN104827041A (en) * | 2015-04-23 | 2015-08-12 | 合肥工业大学 | Method and equipment for stripping metal coating from surface of waste neodymium iron boron permanent magnet |
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Patent Citations (5)
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| JP2004339542A (en) * | 2003-05-13 | 2004-12-02 | Sumitomo Metal Mining Co Ltd | Recycling method for rare earth-transition metal alloy |
| US20050081959A1 (en) * | 2003-10-15 | 2005-04-21 | Kim Andrew S. | Method of preparing micro-structured powder for bonded magnets having high coercivity and magnet powder prepared by the same |
| CN101276667A (en) * | 2008-01-24 | 2008-10-01 | 宁波韵升股份有限公司 | Method and apparatus for stew demagnetizing sintered Nd iron boron permanent magnet |
| CN104827041A (en) * | 2015-04-23 | 2015-08-12 | 合肥工业大学 | Method and equipment for stripping metal coating from surface of waste neodymium iron boron permanent magnet |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107597421A (en) * | 2017-09-30 | 2018-01-19 | 无锡市稀土永磁厂 | The rare earth waste recovering mechanism of uniform blanking |
| CN112430738A (en) * | 2020-11-24 | 2021-03-02 | 内蒙古汉生源科技有限公司 | Treatment method for recycling rare earth permanent magnet waste and electrophoresis equipment |
| CN112853107A (en) * | 2021-01-19 | 2021-05-28 | 连云港高品再生资源有限公司 | Method for treating rare earth permanent magnet waste |
| TWI830540B (en) * | 2022-12-15 | 2024-01-21 | 財團法人工業技術研究院 | Regenerated rare-earth permanent magnet powder and a method for manufacturing the same |
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| CN106077676B (en) | 2018-04-06 |
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Address after: 542603 Wanggao Industrial Development Zone, Hezhou, the Guangxi Zhuang Autonomous Region Patentee after: China Rare Earth (Guangxi) Jinyuan rare earth new material Co., Ltd Address before: 542829 Wanggao Industrial Development Zone, Hezhou, the Guangxi Zhuang Autonomous Region Patentee before: CHINALCO GUANGXI COLORED JINYUAN RARE EARTH Co.,Ltd. |
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