ES456482A1 - Method of removing multi layered coating and apparatus for practicing the method - Google Patents
Method of removing multi layered coating and apparatus for practicing the methodInfo
- Publication number
- ES456482A1 ES456482A1 ES456482A ES456482A ES456482A1 ES 456482 A1 ES456482 A1 ES 456482A1 ES 456482 A ES456482 A ES 456482A ES 456482 A ES456482 A ES 456482A ES 456482 A1 ES456482 A1 ES 456482A1
- Authority
- ES
- Spain
- Prior art keywords
- objects
- soln
- coating
- organic chemical
- ultrasonic field
- Prior art date
- 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.)
- Expired
Links
- 238000000576 coating method Methods 0.000 title abstract 8
- 239000011248 coating agent Substances 0.000 title abstract 7
- 238000000034 method Methods 0.000 title abstract 3
- 239000002184 metal Substances 0.000 abstract 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 239000000126 substance Substances 0.000 abstract 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract 1
- 239000003518 caustics Substances 0.000 abstract 1
- 239000013527 degreasing agent Substances 0.000 abstract 1
- 238000005237 degreasing agent Methods 0.000 abstract 1
- 239000003599 detergent Substances 0.000 abstract 1
- 239000012634 fragment Substances 0.000 abstract 1
- 239000003973 paint Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 239000005028 tinplate Substances 0.000 abstract 1
- 239000002966 varnish Substances 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
Classifications
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/005—Preliminary treatment of scrap
-
- 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
- C22B25/00—Obtaining tin
- C22B25/06—Obtaining tin from scrap, especially tin scrap
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Paints Or Removers (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- ing And Chemical Polishing (AREA)
Abstract
Removal of multiple coatings consisting of >=1 outer organic chemical coating and an inner metal coating from metal objects is described. The objects are treatd in a first soln. in which they are subjected to an ultrasonic field which more or less removes the outer organic chemical coating. The objects are then treated in a second soln. which removes the inner metal coating. Process is esp. sued for treating lacquered tinplate waste. The rate of detinning as well as the amt. of Sn recovered is increased. The metal objects are cooled to a brittle temp. and the non-ferrous particles born by the ferrous objects or fragments are removed in their cooled state by a magnetic device or a vibrating or shock mechanism. The organic chemical coating is a paint or a varnish e.g. acrylic or phenolic. The soln. for removing the Sn-based coating contains NaOH. The objects may also be subjected to an ultrasonic field whilst they are in or passing through the caustic soln. The ultrasonic field acting on the objects in the first or second soln. may comprise two different frequencies. The first soln. may be aq. and contg. a liq. degreasing agent e.g. an alkaline detergent.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB861176 | 1976-03-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES456482A1 true ES456482A1 (en) | 1978-05-01 |
Family
ID=9855820
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES456482A Expired ES456482A1 (en) | 1976-03-04 | 1977-03-03 | Method of removing multi layered coating and apparatus for practicing the method |
| ES466905A Expired ES466905A1 (en) | 1976-03-04 | 1978-02-11 | Method of removing multi layered coating and apparatus for practicing the method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES466905A Expired ES466905A1 (en) | 1976-03-04 | 1978-02-11 | Method of removing multi layered coating and apparatus for practicing the method |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS52128934A (en) |
| AU (1) | AU2274477A (en) |
| BE (1) | BE852010A (en) |
| DE (1) | DE2709515A1 (en) |
| ES (2) | ES456482A1 (en) |
| FR (1) | FR2343059A1 (en) |
| IT (1) | IT1073282B (en) |
| NL (1) | NL7702333A (en) |
| SE (1) | SE7702353L (en) |
| ZA (1) | ZA771005B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0013692B1 (en) * | 1978-12-21 | 1982-03-24 | sma Shredder-Müll Aufbereitung Schrott Maschinen Abbruch GmbH | Apparatus for the selective separation of non-ferromagnetic metals from a mixture of metallic scrap particles of about uniform size |
| FR2493190A1 (en) * | 1980-10-30 | 1982-05-07 | Ben Rais Abdelfettah | Removing lacquer and varnish from metals - esp. from scrap tinplate, by ultrasonic dissolution in mixt. of methanol, ethanol, soda and di:chloro:methane |
| FR2529105A1 (en) * | 1982-06-24 | 1983-12-30 | Centre Rech Fer Blanc | Iron and tin recovery esp. from scrap - by carbonylation of iron content |
| DE3937442A1 (en) * | 1989-11-10 | 1991-05-16 | Nokia Unterhaltungselektronik | METHOD FOR AREA REMOVAL OF LAYERS FROM A SUBSTRATE |
| DE4013969C1 (en) * | 1990-04-30 | 1991-11-14 | Rolf Emil 6688 Illingen De Roland | |
| US5106467A (en) * | 1990-10-05 | 1992-04-21 | Armco Steel Company, L.P. | Alkaline leaching of galvanized steel scrap |
| NL9002193A (en) * | 1990-10-09 | 1992-05-06 | Leto Recycling Bv | METHOD AND APPARATUS FOR PROCESSING WASTE. |
| NL9500302A (en) * | 1995-02-17 | 1996-10-01 | Hoogovens Staal Bv | Method for removing at least a coating from metal scrap parts coated with a coating. |
| DE19512550C1 (en) * | 1995-04-06 | 1996-06-20 | Lindemann Maschfab Gmbh | Method and device for processing containers |
| EP2569455A1 (en) * | 2010-05-10 | 2013-03-20 | Proassort GmbH | Chemical pretreatment and preheating of steel scrap |
| CN112792057A (en) * | 2021-01-21 | 2021-05-14 | 深圳市万来升科技有限公司 | Depainting recovery equipment for waste metal |
| DE102022107082A1 (en) | 2022-03-25 | 2023-09-28 | Johannes Wissing | Process for the treatment of waste materials and installation for the treatment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH356974A (en) * | 1957-12-27 | 1961-09-15 | Usag Ultraschall Ag | Process for cleaning bodies partially provided with coating layers by means of ultrasonic vibrations |
| FR1256191A (en) * | 1960-03-24 | 1961-03-17 | Goldschmidt Ag Th | Process for the de-tinning of offcuts covered with lacquer |
| DE1137559B (en) * | 1961-01-07 | 1962-10-04 | Goldschmidt Ag Th | Pretreatment of used containers to be detinned, such as garbage cans |
| US3168477A (en) * | 1961-07-17 | 1965-02-02 | Vulcan Materials Co | Delacquering process |
| FR1496440A (en) * | 1966-10-12 | 1967-09-29 | Goldschmidt Ag Th | Varnished tinplate stripping process |
| DE1908503B1 (en) * | 1969-02-20 | 1971-03-11 | Goldschmidt Ag Th | METHOD FOR TINNING TINNED IRON SHEET |
-
1977
- 1977-02-18 ZA ZA771005A patent/ZA771005B/en unknown
- 1977-02-28 AU AU22744/77A patent/AU2274477A/en not_active Expired
- 1977-03-02 BE BE175414A patent/BE852010A/en unknown
- 1977-03-03 IT IT6746677A patent/IT1073282B/en active
- 1977-03-03 ES ES456482A patent/ES456482A1/en not_active Expired
- 1977-03-03 SE SE7702353A patent/SE7702353L/en unknown
- 1977-03-04 JP JP2368677A patent/JPS52128934A/en active Pending
- 1977-03-04 FR FR7706429A patent/FR2343059A1/en not_active Withdrawn
- 1977-03-04 DE DE19772709515 patent/DE2709515A1/en active Pending
- 1977-03-04 NL NL7702333A patent/NL7702333A/en not_active Application Discontinuation
-
1978
- 1978-02-11 ES ES466905A patent/ES466905A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| SE7702353L (en) | 1977-09-05 |
| AU2274477A (en) | 1978-09-07 |
| FR2343059A1 (en) | 1977-09-30 |
| NL7702333A (en) | 1977-09-06 |
| DE2709515A1 (en) | 1977-09-15 |
| ES466905A1 (en) | 1978-10-01 |
| JPS52128934A (en) | 1977-10-28 |
| BE852010A (en) | 1977-07-01 |
| ZA771005B (en) | 1977-12-28 |
| IT1073282B (en) | 1985-04-13 |
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