CN109352869A - A method of recycling metal and plastics from the waste plastics containing the coat of metal - Google Patents
A method of recycling metal and plastics from the waste plastics containing the coat of metal Download PDFInfo
- Publication number
- CN109352869A CN109352869A CN201811245175.3A CN201811245175A CN109352869A CN 109352869 A CN109352869 A CN 109352869A CN 201811245175 A CN201811245175 A CN 201811245175A CN 109352869 A CN109352869 A CN 109352869A
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- Prior art keywords
- metal
- coat
- plastics
- copper
- plastic sheet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0217—Mechanical separating techniques; devices therefor
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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
-
- 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
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- 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
- Y02W30/62—Plastics recycling; Rubber recycling
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The method that the present invention provides a kind of to recycle metal and plastics from the waste plastics containing the coat of metal, carries out break process for the waste plastics containing the coat of metal first, obtains the plastic sheet of 2 × 2cm, plastic sheet is immersed in chloroform soln and is handled for 24 hours；By plastic sheet, steel ball by being added in agitated ball mill, vacuum ball-milling treatment 20-40min, screening obtains the plastic sheet of the coat of metal and strip；The coat of metal further progress milled processed that will be disengaged from plastics, obtains copper, nickel, chromium mixed metal powder, and nickel therein is sucked out using magnet, respectively obtains nickel and copper, chromium mixed metal powder；Copper, chromium mixed metal powder are added in dilute hydrochloric acid and are reacted, chromium dissolution is entered into solution and is converted into chromium trichloride solution, copper powder is obtained by filtration.The present invention is simple using equipment, and recovery process process is short, and cost is relatively low, is expected to realize industrialized production.
Description
Technical field:
The invention belongs to secondary resource recycling fields, and in particular to a kind of to recycle from the waste plastics containing the coat of metal
The method of metal and plastics.
Technical background:
At present country energetically advocate develop a circular economy, clean manufacturing under the premise of, to the useless modeling containing the coat of metal
The recycling of metal and plastics in material is increasingly paid attention to.The coat of metal for usually containing the waste plastics of the coat of metal is
Copper, nickel, chrome plating.
Patent CN101476041 discloses the method for a kind of recovering copper, nickel and regenerated plastics from waste electroplating plastics,
After the broken crusher machine of waste electroplating plastics, using nitric acid by dissolving metals such as surface copper, nickel, after insoluble matter filtration washing it is pure
Net plastics；Cupric, nickel solution obtain high-purity copper sponge after iron replacement；Extraction raffinate removes iron through yellow modumite method, and P204 extraction removes
After the foreign ions such as copper, iron, pure nickel nitrate solution is obtained, produces metal nickel plate after electrodeposition is handled.Patent CN100386453C
Disclose a kind of waste plastics coat of metal takes off electroplating method, it be in aerobic situation, with the HCl treatment waste plastics coat of metal,
Make its generate copper, nickel, chromium chlorination salting liquid and take off plating after plastics, then into solution be added sulfuric acid generate sulfate it is molten
Liquid, last crystallisation by cooling obtain sulfate product.
Patent 201710200666.5 discloses a kind of recovery process of ABS plastic in waste electroplating, first by plastic crushing,
Then it is aoxidized in nitration mixture, so that metal completely disengages ABS, then plastics and metal is recycled respectively.Patent
201010301214.4 disclose a kind of method for recycling metal and plastics in the waste plastics containing the coat of metal, have following step
It is rapid: 1. waste plastics being added in excessive hydrochloric acid solution, while being filled with industrial oxygen, keeps hydrochloric acid sufficiently anti-with the coat of metal
It answers, it is isolated to take off plating plastics and mixed solution；2. excessive iron filings are added into mixed solution, sufficiently react, be obtained by filtration
Copper, nickel, the mixed metal of iron and mixed solution；3. with magnet from copper, nickel, iron mixed metal in iron and nickel sucked out, point
Iron nickel mixed metal and metallic copper are not obtained.
The above method is separately recovered using acid dissolution metal, then using extractant or other chemical methodes, main
It is long that there are recovery process, and processing cost is high, generates a large amount of spent acid waste liquid and needs to handle, and has secondary pollution hidden danger.
It is necessary to develop the new method for recycling metal and plastics from the waste plastics containing the coat of metal, reduce using a large amount of
Chemical reagent uses, and simplifies recovery process, high efficiente callback valuable resource.
Summary of the invention:
Technical problem to be solved by the invention is to provide a kind of to recycle metal and modeling from the waste plastics containing the coat of metal
The method of material, realization metal resource and plastic resource efficiently separating and recycling.
A kind of method that metal and plastics are recycled from the waste plastics containing the coat of metal of the present invention, passes through following steps reality
It is existing:
1) waste plastics containing the coat of metal, is subjected to break process, the plastic sheet of 2 × 2cm is obtained, plastic sheet is immersed in
It is handled for 24 hours in chloroform soln；
2) entire ball mill, than being added in agitated ball mill, is in vacuum by certain mass by plastic sheet, steel ball
State, ball-milling treatment 20-40min, the coat of metal on plastic sheet surface layer are detached from plastics under ball action, in the coat of metal
Metal be copper, nickel, chromium, screening obtain the plastic sheet of the coat of metal and strip；
3) coat of metal further progress milled processed that, will be disengaged from plastics, obtains copper, nickel, chromium mixed metal powder, adopts
Nickel therein is sucked out with magnet, respectively obtains nickel and copper, chromium mixed metal powder；
4), copper, chromium mixed metal powder are added in dilute hydrochloric acid and reacted, chromium dissolution is entered into solution and is converted into tri-chlorination
Copper powder is obtained by filtration in chromium solution.
In the method for the invention, in the step 2), the diameter of the steel ball is 30mm, the plastic sheet and steel ball
Mass ratio is 0.8:1.
In the method for the invention, in the step 2), the system pressure of the ball grinder interior is not higher than 1KPa.
In the method for the invention, in the step 3), the revolving speed of the agitated ball mill is 200-300r/min.
In the method for the invention, in the step 3), the metal powder particle size range after milled processed is 200 mesh -300
Mesh.
In the method for the invention, in the step 4), the concentration of the dilute hydrochloric acid is not more than 1mol/L.
Technical principle of the invention:
The present invention is that the waste plastics containing the coat of metal is carried out break process first, obtain sheet with the coat of metal
Plastics are impregnating plastic sheet using chloroform, and since chloroform has strong dissolubility to plastics, chloroform can be effective
The form changed between plastics and coating causes between plastics and coating so that the separation material between plastics and coating dissolves
Adhesion strength dies down, and then plastic sheet is added in ball mill together with steel ball, chloroform and carries out ball-milling treatment, is by ball milling
The coat of metal can be scraped from waste plastics surface layer, the metal scraped includes copper, nickel, chromium, due to being handled in vacuum systems,
Metal is not oxidized, after further grinding dissociation, can be efficiently separated nickel using magnet, is then reacted with hydrochloric acid with chromium
Chromium chloride is generated, copper powder can be obtained in filtering.
The beneficial effects of the present invention are:
The present invention makes full use of the gap between the coat of metal and plastics to can use organic solvent and is changed, after immersion
So that the adhesive force of the coat of metal dies down, thus can be by metal-stripping by the way of ball milling.Then magnetic separation and simple salt are used
Resource recycling can be realized in acid dissolution, filtering.The present invention mainly uses mechanical means separating plastic and metal, and minute quantity makes
With chemical reagent, and extra waste liquid will not be generated, simple using equipment, recovery process process is short, and cost is relatively low, is expected to realize
Industrialized production.
Detailed description of the invention:
Fig. 1 is a kind of process flow chart of method that metal and plastics are recycled from the waste plastics containing the coat of metal.
Specific embodiment:
Embodiment 1
Waste plastics containing the coat of metal is subjected to break process, the plastic sheet of 2 × 2cm is obtained, plastic sheet is immersed in three
It is handled for 24 hours in chloromethanes solution；The steel ball that 0.8Kg plastic sheet and 1Kg diameter are 30mm is added in agitated ball mill, it will
Entire ball mill is in vacuum state, and system pressure is not higher than 1KPa, and the revolving speed of ball mill is 300r/min, ball-milling treatment 20-
40min, the coat of metal on plastic sheet surface layer are detached from plastics under ball action, the metal in the coat of metal be copper, nickel,
Chromium, screening obtain the plastic sheet of the coat of metal and strip；The coat of metal further progress milled processed that will be disengaged from plastics, obtains
Particle size range is copper, nickel, the chromium mixed metal powder of 200 mesh, and nickel therein is sucked out using magnet, respectively obtain nickel and copper,
Chromium mixed metal powder；Copper, chromium mixed metal powder are added in 1mol/L dilute hydrochloric acid and reacted, chromium dissolution is turned into solution
Chromium trichloride solution is turned to, copper powder is obtained by filtration.
Claims (6)
1. a kind of method for recycling metal and plastics from the waste plastics containing the coat of metal, it is characterised in that: pass through following steps
It realizes:
1) waste plastics containing the coat of metal, is subjected to break process, the plastic sheet of 2 × 2cm is obtained, plastic sheet is immersed in trichlorine
It is handled for 24 hours in dichloromethane；
2) entire ball mill, than being added in agitated ball mill, is in vacuum shape by certain mass by plastic sheet, steel ball
State, ball-milling treatment 20-40min, the coat of metal on plastic sheet surface layer are detached from plastics under ball action, in the coat of metal
Metal is copper, nickel, chromium, and screening obtains the plastic sheet of the coat of metal and strip；
3) coat of metal further progress milled processed that, will be disengaged from plastics, obtains copper, nickel, chromium mixed metal powder, using magnetic
Nickel therein is sucked out iron, respectively obtains nickel and copper, chromium mixed metal powder；
4), copper, chromium mixed metal powder are added in dilute hydrochloric acid and reacted, chromium dissolution is entered solution, and to be converted into chromium trichloride molten
Copper powder is obtained by filtration in liquid.
2. a kind of method for recycling metal and plastics from the waste plastics containing the coat of metal according to claim 1, special
Sign is: in the step 2), the diameter of the steel ball is 30mm, and the mass ratio of the plastic sheet and steel ball is 0.8:1.
3. a kind of method for recycling metal and plastics from the waste plastics containing the coat of metal according to claim 1, special
Sign is: in the step 2), the system pressure of the ball grinder interior is not higher than 1KPa.
4. a kind of method for recycling metal and plastics from the waste plastics containing the coat of metal according to claim 1, special
Sign is: in the step 3), the revolving speed of the agitated ball mill is 200-300r/min.
5. a kind of method for recycling metal and plastics from the waste plastics containing the coat of metal according to claim 1, special
Sign is: in the step 3), the metal powder particle size range after milled processed is -300 mesh of 200 mesh.
6. a kind of method for recycling metal and plastics from the waste plastics containing the coat of metal according to claim 1, special
Sign is: in the step 4), the concentration of the dilute hydrochloric acid is not more than 1mol/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811245175.3A CN109352869A (en) | 2018-10-24 | 2018-10-24 | A method of recycling metal and plastics from the waste plastics containing the coat of metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811245175.3A CN109352869A (en) | 2018-10-24 | 2018-10-24 | A method of recycling metal and plastics from the waste plastics containing the coat of metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109352869A true CN109352869A (en) | 2019-02-19 |
Family
ID=65346622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811245175.3A Withdrawn CN109352869A (en) | 2018-10-24 | 2018-10-24 | A method of recycling metal and plastics from the waste plastics containing the coat of metal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109352869A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565359A (en) * | 2019-09-09 | 2019-12-13 | 珠海市安能环保科技有限公司 | recycling method of waste copper and nickel wastewater filter medium |
| CN111016009A (en) * | 2019-11-20 | 2020-04-17 | 刘若虹 | Stripping method of plastic electroplated layer based on water circulation system |
-
2018
- 2018-10-24 CN CN201811245175.3A patent/CN109352869A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565359A (en) * | 2019-09-09 | 2019-12-13 | 珠海市安能环保科技有限公司 | recycling method of waste copper and nickel wastewater filter medium |
| CN111016009A (en) * | 2019-11-20 | 2020-04-17 | 刘若虹 | Stripping method of plastic electroplated layer based on water circulation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190219 |
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| WW01 | Invention patent application withdrawn after publication |