GB1214579A - Improvements in or relating to the re-constitution of electrodes - Google Patents
Improvements in or relating to the re-constitution of electrodesInfo
- Publication number
- GB1214579A GB1214579A GB9706/68A GB970668A GB1214579A GB 1214579 A GB1214579 A GB 1214579A GB 9706/68 A GB9706/68 A GB 9706/68A GB 970668 A GB970668 A GB 970668A GB 1214579 A GB1214579 A GB 1214579A
- Authority
- GB
- United Kingdom
- Prior art keywords
- melt
- noble metal
- anodes
- oxidant
- feb
- 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
- 239000000155 melt Substances 0.000 abstract 4
- 229910000510 noble metal Inorganic materials 0.000 abstract 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 abstract 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 239000007800 oxidant agent Substances 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000010953 base metal Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 229910052741 iridium Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229910052758 niobium Inorganic materials 0.000 abstract 1
- 229910052762 osmium Inorganic materials 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052763 palladium Inorganic materials 0.000 abstract 1
- 229910052697 platinum Inorganic materials 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 229910052702 rhenium Inorganic materials 0.000 abstract 1
- 229910052703 rhodium Inorganic materials 0.000 abstract 1
- 229910052707 ruthenium Inorganic materials 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000011780 sodium chloride Substances 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 229910052726 zirconium Inorganic materials 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/44—Compositions for etching metallic material from a metallic material substrate of different composition
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/28—Cleaning or pickling metallic material with solutions or molten salts with molten salts
- C23G1/32—Heavy metals
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
Landscapes
- Chemical & Material Sciences (AREA)
- Metallurgy (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Electrolytic Production Of Metals (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
1,214,579. Fused electrolyte process; Reconstitution of electrodes. CHEMNOR A. G. Feb.28, 1969 [Feb.28, 1968], No.9706/68. Headings C7B and C7E. Anodes comprising a conductive base coated with noble metals (i.e. Au, Ag, Ru, Rh, Pd, Os, Ir, Pt and Re) or compounds thereof are cleaned by immersion in a melt containing a basic material at a temperature above 250C, in the presence of an oxidant or oxygen. The base metal of the anodes may be Ti, Zr, Nb, Ta,W, or Bi, the basic material may be NaOH, KOH, LiOH, and the oxidant may be NaNO a or KNO 3 . The bath may also contain NaCl, KCl, Na 2 CO 3 and/or K 2 CO 3 . After treatment in the melt, coating residues may be removed by dilute HCl or H 2 SO 4 or HCl/HNO 3 . The noble metal dissolved in the salt melt may be recovered by making the steel vessel containing the melt an anode, and supplying a cathode whereon the noble metal is collected on passage of D.C., or the melt may be dissolved in water prior to electrolytic recovery of the noble metal.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9706/68A GB1214579A (en) | 1968-02-28 | 1968-02-28 | Improvements in or relating to the re-constitution of electrodes |
| BE728860D BE728860A (en) | 1968-02-28 | 1969-02-24 | |
| NL6902987A NL6902987A (en) | 1968-02-28 | 1969-02-26 | |
| US802676*A US3573100A (en) | 1968-02-28 | 1969-02-26 | Reconstitution of electrodes |
| NO00837/69A NO129580B (en) | 1968-02-28 | 1969-02-27 | |
| DE1909757A DE1909757C3 (en) | 1968-02-28 | 1969-02-27 | Process for cleaning anodes for electrolytic processes, which consist of a substrate of a film-forming metal and a coating of noble metal oxides or mixed oxides containing noble metal oxides |
| SE02682/69A SE365430B (en) | 1968-02-28 | 1969-02-27 | |
| FR6905356A FR2002828A1 (en) | 1968-02-28 | 1969-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9706/68A GB1214579A (en) | 1968-02-28 | 1968-02-28 | Improvements in or relating to the re-constitution of electrodes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1214579A true GB1214579A (en) | 1970-12-02 |
Family
ID=9877208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9706/68A Expired GB1214579A (en) | 1968-02-28 | 1968-02-28 | Improvements in or relating to the re-constitution of electrodes |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3573100A (en) |
| BE (1) | BE728860A (en) |
| DE (1) | DE1909757C3 (en) |
| FR (1) | FR2002828A1 (en) |
| GB (1) | GB1214579A (en) |
| NL (1) | NL6902987A (en) |
| NO (1) | NO129580B (en) |
| SE (1) | SE365430B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1312375A (en) * | 1970-06-26 | 1973-04-04 | Ici Ltd | Stripping of coated titanium electrodes for re-coating |
| US4132569A (en) * | 1977-10-25 | 1979-01-02 | Diamond Shamrock Corporation | Ruthenium recovery process |
| DE3032480C2 (en) * | 1980-08-28 | 1983-10-13 | C. Conradty Nürnberg GmbH & Co KG, 8505 Röthenbach | Process for removing electrocatalytically effective protective coatings from electrodes with a metal core and application of the process |
| US4339281A (en) * | 1981-08-20 | 1982-07-13 | Rca Corporation | Shank diamond cleaning |
| US5366598A (en) * | 1989-06-30 | 1994-11-22 | Eltech Systems Corporation | Method of using a metal substrate of improved surface morphology |
| US5324407A (en) * | 1989-06-30 | 1994-06-28 | Eltech Systems Corporation | Substrate of improved plasma sprayed surface morphology and its use as an electrode in an electrolytic cell |
| US5314601A (en) * | 1989-06-30 | 1994-05-24 | Eltech Systems Corporation | Electrodes of improved service life |
| US5141563A (en) * | 1989-12-19 | 1992-08-25 | Eltech Systems Corporation | Molten salt stripping of electrode coatings |
| ES2316871T5 (en) † | 2002-11-29 | 2014-03-20 | Mitsubishi Materials Corporation | Methods to separate platinum group elements from materials containing selenium / tellurium |
| JP5651252B2 (en) * | 2011-11-21 | 2015-01-07 | ペルメレック電極株式会社 | Method for peeling coating layer of electrode for electrolysis |
-
1968
- 1968-02-28 GB GB9706/68A patent/GB1214579A/en not_active Expired
-
1969
- 1969-02-24 BE BE728860D patent/BE728860A/xx not_active IP Right Cessation
- 1969-02-26 US US802676*A patent/US3573100A/en not_active Expired - Lifetime
- 1969-02-26 NL NL6902987A patent/NL6902987A/xx unknown
- 1969-02-27 SE SE02682/69A patent/SE365430B/xx unknown
- 1969-02-27 DE DE1909757A patent/DE1909757C3/en not_active Expired
- 1969-02-27 NO NO00837/69A patent/NO129580B/no unknown
- 1969-02-28 FR FR6905356A patent/FR2002828A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| BE728860A (en) | 1969-08-01 |
| FR2002828A1 (en) | 1969-10-31 |
| SE365430B (en) | 1974-03-25 |
| DE1909757C3 (en) | 1980-02-07 |
| NL6902987A (en) | 1969-09-01 |
| DE1909757A1 (en) | 1969-09-25 |
| US3573100A (en) | 1971-03-30 |
| NO129580B (en) | 1974-04-29 |
| DE1909757B2 (en) | 1973-03-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
| PCNP | Patent ceased through non-payment of renewal fee |