CN103106986B - Method of recycling copper from waste machine winding - Google Patents
Method of recycling copper from waste machine winding Download PDFInfo
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- CN103106986B CN103106986B CN2013100621036A CN201310062103A CN103106986B CN 103106986 B CN103106986 B CN 103106986B CN 2013100621036 A CN2013100621036 A CN 2013100621036A CN 201310062103 A CN201310062103 A CN 201310062103A CN 103106986 B CN103106986 B CN 103106986B
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
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Abstract
The invention relates to a method of recycling copper from waste machine winding and belongs to the technical field of secondary resource recycling and reusing. The method comprises the steps of disassembly of a waste motor, arranging and machining of varnished-wire-wound stators and rotors, separating of iron cores and varnished wire winding from the stators and the rotors with the method of separating medium immersing, paint removing with a winding-used paint remover and mechanical force, ingot casting, and storage step detecting. According to the method of recycling the copper from the waste machine winding, recycling of the copper from the waste machine winding is achieved by means of combination of several physics processes and several chemical processes, defects of low recycling degree, environment-polluting, high cost and the like existing in the prior art are overcome, the recycling process is short, labor cost of recycling is low, and purity of reclaimed copper is high.
Description
Technical field
The invention belongs to secondary resource reclaims and the reutilization technology field: being specifically related to from the copper cash with enamel-cover film is the particularly recovery of the enamelled wire of reeling condition of so-called enamelled wire; Namely what is called reclaims the method for copper from waste and old motor winding.
Background technology
Metallic copper is used very extensive in the industry such as electric power, machinery, electronics, electrical equipment, weapons.But China is the country of copper shortage of resources always; the copper mine natural resources shortage; the exploitation difficulty is large; newfound resource is few, and the reserve reserves are not enough, and can destroy the local ecosystem by serious environment pollution inevitably in the process of exploitation; therefore no matter be from protecting the angle of the limited nonferrous metal ore resource of China; or from the biological environment on resource conservation ground, the sustainable development of feasible region is consumed the meaning that big country has particular importance to the copper of this scarce copper of China.For many years a large amount of import copper concentrates, smart copper, blister copper, copper material and other copper product, to remedy the deficiency of copper resource, the ratio that domestic copper concentrate accounts for is very little.Consider from many-sides such as china natural resources, the energy, environment, financial resources, standard ground reclaims copper scrap industry, is a shortcut of development China Copper Processing Industry, meets the strategy of national sustainable development fully.
Copper scrap reclaims in the industry, often has in the prior art to use discarded motor in family's electric product and the manufacturing machine, and these motor are by the axle of stator, rotor, rotor, bearing, form as the end frame of motor casing and frame etc.Stator comprises that enamelled wire is wound on the iron core and the winding that forms with predetermined electrical form.Strengthen and the purpose of the enhancing of machinery for the insulating resin of winding, stator will carry out impregnation process usually.And, for such as the fan motor of room conditioning etc., often uses to improve miniaturization, quietization, reliability as purpose, stator is embedded in the resin the so-called integrated electric machine that seals.On this basis, use commutator motor as drive source in dust catcher, in this commutator motor, the rotor-side with commutator has winding, and it also carries out impregnation process.The winding that is comprised of enamelled wire of the motor that these are waste and old is cured by dipping or is embedded in the resin, therefore, be difficult to realize separating and disintegrating from the iron core of winding, thereby the waste product of the motor that reclaims as discarded object is disposed mechanism, and to carry out economically that resource reclaims be difficult.Usually, waste product dispose mechanism purchase above-mentioned discarded motor be discharged at the river course other or in incinerator the burning enamelled wire insulating resin is incinerated only collect copper cash.Collected copper cash is used as copper material.In above-mentioned conventional treatment method, the purity of collected copper cash is lowered through combustion process.Particularly, in burning, insulating resin produces many C0, S0
x, N0
x, HCl, dioxin etc., health risk causes air pollution thus.
Therefore, consider to use such method: the rotor of resin cast is immersed in the highly basic decomposed solution, decomposes resin cast with highly basic and make it collapse, separate at least the metal parts of the electromagnet portion such as winding and iron core.Such as: state's invention patent application publication number CN117511lA in 4 days March in 1998 discloses a kind of method that reclaims copper from winding.Be that the winding that the enamelled wire by the dielectric film with polyesters and/or polyurethanes consists of is immersed in the strong base solution, then, remove the highly basic that is attached on the winding, then, winding is carried out high-frequency melting.But only the applicable winding that has separated from iron core reclaims copper in the method.Hard problem and in fact disassemble winding in the iron core, highland barley paper, bamboo wedge and jag are fixed because the combination of winding and iron core is insulated except resin cast is arranged in addition, obtain the winding of separation, only have employing manually from winding slot of core one one choose, therefore reclaim cost of labor high, the resource degree is low.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method that reclaims copper from waste and old motor winding, reclaims efficiently the high copper of purity on the winding that utilizes the method can realize being made of enamelled wire; And recovery process is short, reclaims cost of labor low, and the resource degree is high.
The invention solves the technical scheme that its technical problem adopts, a kind of method that from waste and old motor winding, reclaims copper, and its technique comprises the steps:
1. cutting tool is used in waste and old motor disintegration, cuts motor casing and takes out the rotor/stator that is wound with the enamelled wire winding;
2. arrangement is processed with the rotor/stator of enamelled wire winding according to the planform of rotor/stator, and the excision rotor/stator is the winding turn fractions of an iron core that end exposes wherein, reclaims the winding turn fractions pending;
3. from rotor/stator separate iron core and enamelled wire winding 2. the rotor/stator that processes of step arrangement be immersed in the parting liquid, heating keeps 80-100 ℃ of parting liquid; Put into one to two 20KHz in splendid attire parting liquid container, the ultrasound wave vibrating bar of power 100W every vibration in 1 hour 10 minutes, takes out after 72 hours; Clamp the winding turn fractions that rotor/stator is not excised iron core that end exposes with mechanical force, extract whole enamelled wire windings out;
Described parting liquid is NaOH solution and 4: 1 by volume the mixed liquor of ethanol of 4M;
4. the winding depainting will cut into short section of 30-40mm with mechanical force through the enamelled wire winding that 3. step is separated, and reclaim the winding turn fractions with 2. step and mix, put into the container with propeller, short section winding wire of the adding whole submergences of paint stripper; Start the propeller continuous stirring, make mutual frictional heating between the short section winding wire, heat up, when the paint stripper temperature reaches 70 ℃, stop to stir; Treat that the paint stripper temperature drops to 50 ℃ naturally, starts again the propeller continuous stirring; So repeatedly, until paint stripper is argillaceous, and short section winding wire all expose the copper true qualities, stops depainting, adds clear water dilution paint stripper, discharging; Again start propeller, with clear water cleaning and removing residual paint stripper, to pH value below 8.5, discharge;
Described paint stripper is NaOH solution and 3: 1 by volume the mixed liquor of banana oil of 3M;
5. the short section winding wire of founding ingot after with depainting is fused into copper melts with conventional smelting furnace, in order to remove the Fe impurity in the copper, ventilate in the molten bath, agitation molten pool made the Fe high-temperature oxydation 2 to 6 hours consumingly, and add simultaneously 0.005%～0.05% quartzy preparation, make iron oxide and its formation silicate slag, after in stove, stirring, leave standstill slagging-off and can remove the impurity F e in the copper, at last, copper melts is through being cast into copper ingot;
6. check is put in storage.
In the present invention, in order to separate iron core and enamelled wire winding, excised first the wherein winding turn fractions of an iron core that end exposes of rotor/stator, so that parting liquid is easy to penetrate in the winding slot of core from the winding that cuts, then parting liquid constantly acts on the winding that the enamelled wire of the dielectric film with polyesters and/or polyurethanes consists of by ultrasonic vibration, thereby dielectric film is soaked into decompose and carry out deteriorated and softening.Final realization is extracted whole enamelled wire windings out after removing a part of deteriorated resin smoothly.After obtaining enamelled wire winding of the present invention, although its outside of enamelled wire is very thin, namely have for example other resin such as the polyamide membrane of 1-3 μ m in its outside, the compactness parting liquid of this film also is difficult to soak into decomposition and carries out deteriorated.For this reason, the present invention adopts paint stripper, adds the mechanical force friction, makes polyamide membrane chemical force and mechanical force synergy and wipes and come off.Like this, because that treated winding is sneaked into enamel-cover film residue is less, guaranteed when follow-up copper melting, to bring out producing C0, S0
x, N0
x, HCl, dioxin gas and/or to produce waste residue also less, just can effectively reduce pollution, the high-recovery high copper of purity of regenerating economically.Use through practical operation, the present invention can obtain reclaimed copper purity up to 98.7%.
In sum.After adopting said method of the present invention, following advantage and effect are arranged:
The present invention combines by several physics and chemistry methods, copper and resource are reclaimed in realization from waste and old motor winding, overcome the resource degree that prior art exists low, easily cause environmental pollution, high in cost of production shortcoming, has recovery process short, the recovery cost of labor is low, the superiority that reclaimed copper purity is high.
Embodiment
The below describes the present invention 1 in detail with specific embodiment
A kind of method that from waste and old 4 utmost point 250W motor windings, reclaims copper, the 0.51mm of this enamelled wire wire core diameter; Its technique comprises the steps:
1. cutting tool is used in waste and old motor disintegration, cuts motor casing and takes out the rotor/stator that is wound with the enamelled wire winding;
2. arrangement is processed with the rotor/stator of enamelled wire winding according to the planform of rotor/stator, and the excision rotor/stator is the winding turn fractions of an iron core that end exposes wherein, reclaims winding turn fractions 85g pending;
3. from rotor/stator separate iron core and enamelled wire winding 2. the rotor/stator that processes of step arrangement be immersed in the 2000ml parting liquid, heating keeps 80-100 ℃ of parting liquid; Put into one to 20KHz in splendid attire parting liquid container, the ultrasound wave vibrating bar of power 100W every vibration in 1 hour 10 minutes, takes out after 72 hours; Clamp the winding turn fractions that rotor/stator is not excised iron core that end exposes with mechanical force, extract whole enamelled wire windings out; Can obtain the enamelled wire winding of 880g from this stator
Described parting liquid is NaOH solution and 4: 1 by volume the mixed liquor of ethanol of 4M;
4. the winding depainting will cut into short section of 30-40mm with mechanical force through the enamelled wire winding that 3. step is separated, and reclaim the winding turn fractions with 2. step and mix, put into the container with propeller, short section winding wire of the adding whole submergences of 500ml paint stripper; Start the propeller continuous stirring, make mutual frictional heating between the short section winding wire, heat up, when the paint stripper temperature reaches 70 ℃, stop to stir; Treat that the paint stripper temperature drops to 50 ℃ naturally, starts again the propeller continuous stirring; So repeatedly, until paint stripper is argillaceous, and short section winding wire all expose the copper true qualities, stops depainting, adds clear water dilution paint stripper, discharging; Again start propeller, with clear water cleaning and removing residual paint stripper, to pH value below 8.5, discharge;
Described paint stripper is NaOH solution and 3: 1 by volume the mixed liquor of banana oil of 3M;
5. the short section winding wire of founding ingot after with depainting is fused into copper melts with conventional smelting furnace, in order to remove the Fe impurity in the copper, ventilate in the molten bath, agitation molten pool made the Fe high-temperature oxydation 2 to 6 hours consumingly, and add simultaneously 0.005%～0.05% quartzy preparation, make iron oxide and its formation silicate slag, after in stove, stirring, leave standstill slagging-off and can remove altogether 12g of the impurity F e in the copper, at last, copper melts is through being cast into the 960g copper ingot;
6. check is put in storage, and copper purity is up to 98.7%.
Claims (1)
1. method that reclaims copper from waste and old motor winding, it is characterized in that: technique comprises the steps:
1. waste and old motor disintegrates: use cutting tool, cut motor casing and take out stator or the rotor that is wound with the enamelled wire winding;
2. arrangement is processed with stator or the rotor of enamelled wire winding: according to the planform of stator or rotor, excision stator or rotor be the winding turn fractions of an iron core that end exposes wherein, reclaims the winding turn fractions pending;
3. separate iron core and enamelled wire winding from stator or rotor: 2. step is put the stator or the rotor that process in order and is immersed in the parting liquid 80-100 ℃ of heating maintenance parting liquid; Put into one to two 20KHz in splendid attire parting liquid container, the ultrasound wave vibrating bar of power 100W every vibration in 1 hour 10 minutes, takes out after 72 hours; Clamp the winding turn fractions that stator or rotor do not excise iron core that end exposes with mechanical force, extract whole enamelled wire windings out;
Described parting liquid is 4 mol/L NaOH solution and 4: 1 by volume mixed liquor of ethanol;
4. winding depainting: will cut into short section of 30-40mm with mechanical force through the enamelled wire winding that 3. step is separated, and reclaim the winding turn fractions with 2. step and mixes, and put into the container with propeller, short section winding wire of the adding whole submergences of paint stripper; Start the propeller continuous stirring, make mutual frictional heating between the short section winding wire, heat up, when the paint stripper temperature reaches 70 ℃, stop to stir; Treat that the paint stripper temperature drops to 50 ℃ naturally, starts again the propeller continuous stirring; So repeatedly, until paint stripper is argillaceous, and short section winding wire all expose the copper true qualities, stops depainting, adds clear water dilution paint stripper, discharging; Again start propeller, with clear water cleaning and removing residual paint stripper, to pH value below 8.5, discharge;
Described paint stripper is 3 mol/L NaOH solution and 3: 1 by volume mixed liquor of banana oil;
5. founding ingot: short section winding wire behind the depainting is fused into copper melts with conventional smelting furnace, in order to remove the Fe impurity in the copper, ventilate in the molten bath, agitation molten pool made the Fe high-temperature oxydation 2 to 6 hours consumingly, and add simultaneously 0.005%～0.05% quartzy preparation, make iron oxide and its formation silicate slag, after in stove, stirring, leave standstill slagging-off and can remove the impurity F e in the copper, at last, copper melts is through being cast into copper ingot;
6. check is put in storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100621036A CN103106986B (en) | 2013-02-28 | 2013-02-28 | Method of recycling copper from waste machine winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100621036A CN103106986B (en) | 2013-02-28 | 2013-02-28 | Method of recycling copper from waste machine winding |
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| CN103106986A CN103106986A (en) | 2013-05-15 |
| CN103106986B true CN103106986B (en) | 2013-10-16 |
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| CN2013100621036A Active CN103106986B (en) | 2013-02-28 | 2013-02-28 | Method of recycling copper from waste machine winding |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978019A (en) * | 2014-05-31 | 2014-08-13 | 台州美新源环保设备科技有限公司 | Detaching and recovery processing integrated machine and recovery processing method for waste motor |
| CN105880257A (en) * | 2014-12-24 | 2016-08-24 | 天津中科讯拓科技有限公司 | Mobile phone data cable material separating and recycling station |
| CN110311515A (en) * | 2019-06-28 | 2019-10-08 | 河南沐桐环保产业有限公司 | Scrap motor disassembling method |
| CN112143893B (en) * | 2019-06-28 | 2022-07-01 | 铜陵富翔铜再生循环利用有限公司 | Method for wet separation and copper recovery of waste enameled wire |
| CN112143910B (en) * | 2019-06-28 | 2022-12-06 | 铜陵富翔铜再生循环利用有限公司 | Ultrasonic reinforced wet separation method for waste enameled wire |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1175111A (en) * | 1996-04-08 | 1998-03-04 | 松下电器产业株式会社 | Method for recoverying copper from winding |
| CN101119051A (en) * | 2007-07-11 | 2008-02-06 | 天津大学 | Electric motor line thermal isolation technique machining process and middle-temperature gas circulating system and device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002313164A (en) * | 2001-04-16 | 2002-10-25 | Auto Network Gijutsu Kenkyusho:Kk | Recycling method for wire harness |
| JP5259231B2 (en) * | 2008-04-03 | 2013-08-07 | 日本磁力選鉱株式会社 | Method for recovering valuable metals from waste wires |
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- 2013-02-28 CN CN2013100621036A patent/CN103106986B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1175111A (en) * | 1996-04-08 | 1998-03-04 | 松下电器产业株式会社 | Method for recoverying copper from winding |
| CN101119051A (en) * | 2007-07-11 | 2008-02-06 | 天津大学 | Electric motor line thermal isolation technique machining process and middle-temperature gas circulating system and device |
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| CN103106986A (en) | 2013-05-15 |
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Denomination of invention: Method of recycling copper from waste machine winding Effective date of registration: 20161014 Granted publication date: 20131016 Pledgee: Xiangtan torch Venture Investment Co., Ltd. Pledgor: Xiangtan Huaxia Wire and Cable Co., Ltd. Registration number: 2016430000037 |
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