EP0609507B1 - Elektrolytisches Verfahren zur Gewinnung von Platin hoher Reinheit aus verunreinigtem Platin - Google Patents
Elektrolytisches Verfahren zur Gewinnung von Platin hoher Reinheit aus verunreinigtem Platin Download PDFInfo
- Publication number
- EP0609507B1 EP0609507B1 EP93118981A EP93118981A EP0609507B1 EP 0609507 B1 EP0609507 B1 EP 0609507B1 EP 93118981 A EP93118981 A EP 93118981A EP 93118981 A EP93118981 A EP 93118981A EP 0609507 B1 EP0609507 B1 EP 0609507B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- platinum
- process according
- hydrochloric acid
- utilised
- cathode
- 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 - Lifetime
Links
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 50
- 229910052697 platinum Inorganic materials 0.000 title claims abstract description 35
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000012535 impurity Substances 0.000 claims abstract description 13
- 239000012528 membrane Substances 0.000 claims abstract description 13
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 229910001260 Pt alloy Inorganic materials 0.000 claims abstract description 3
- 238000005341 cation exchange Methods 0.000 claims description 9
- 239000010953 base metal Substances 0.000 claims description 8
- 229910052763 palladium Inorganic materials 0.000 claims description 8
- 229910052737 gold Inorganic materials 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 4
- 229910052741 iridium Inorganic materials 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- SSVFCHUBLIJAMI-UHFFFAOYSA-N platinum;hydrochloride Chemical compound Cl.[Pt] SSVFCHUBLIJAMI-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims description 2
- 239000004809 Teflon Substances 0.000 claims description 2
- 229920006362 Teflon® Polymers 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052787 antimony Inorganic materials 0.000 claims description 2
- 229910052785 arsenic Inorganic materials 0.000 claims description 2
- 229910052793 cadmium Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052745 lead Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 4
- 238000000746 purification Methods 0.000 claims 2
- 229910052720 vanadium Inorganic materials 0.000 claims 2
- 150000003057 platinum Chemical class 0.000 abstract description 8
- 229910000510 noble metal Inorganic materials 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 150000001768 cations Chemical class 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 18
- 239000010931 gold Substances 0.000 description 8
- 239000010948 rhodium Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- JLIGOPWLDBRXCZ-UHFFFAOYSA-L azane;dichloroplatinum Chemical compound N.Cl[Pt]Cl JLIGOPWLDBRXCZ-UHFFFAOYSA-L 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000010970 precious metal Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 platinum metals Chemical class 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 229920000557 Nafion® Polymers 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/20—Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals
Definitions
- the present invention relates to an electrolytic process for obtaining high purity platinum from concentrated hydrochloric acid solutions from the contaminated platinum.
- these platinum scrap must now be refined, for example to provide purities of 99.95% platinum for device platinum or 99.99% platinum for thermocouples, as required.
- certain orders of magnitude of certain contaminants must be observed.
- Refined platinum can be refined by multiple precipitation of the platinum as ammonium platinum chloride. Pt ⁇ H2 [PtCl6] ⁇ (NH4) 2 [PtCl6] ⁇ Pt
- the invention was therefore based on the object of providing a process for the production of platinum of high purity, in which the precious and base metals are separated from contaminated platinum in a short time with minimal losses and with little labor using small apparatus.
- the platinum metal solutions have a content of 50 to 700 g / l and total impurities of ⁇ 5000 ppm.
- Hydrochloric acid platinum metal solutions preferably hexachloroplatinic acid
- 6 to 8 N hydrochloric acid preferably 6 N hydrochloric acid
- the method according to the invention can thus be carried out in several stages depending on the purity of the platinum required.
- the complex bound ions dissociate, migrate through the cation exchange membrane and are deposited on the cathode.
- the deposited precipitate also contains small amounts of Pt. This precipitate is mechanically removed from the cathode and processed separately.
- the inventive method can be refined 1 kg of platinum within 48 h.
- a hydrochloric acid platinum solution with the following impurities (concentration information based on platinum) Ir 1020 ppm Rh 630 ppm Pd 440 ppm Au 120 ppm Cu 250 ppm Fe 280 ppm Ni 230 ppm Sb 100 ppm Pb 80 ppm Al 80 ppm and a platinum content of 250 g / l (pH ⁇ 1) is electrolyzed in an electrolysis cell, the cathode and anode space are divided by a cation exchange membrane, at a voltage of 4.5 V and a current density of 9 A / dm.
- the base metals are depleted to ⁇ 20 ppm, the iridium, rhodium and gold content is reduced by 50%, the palladium content by 20%.
- the platinum solution which was refined according to Example 1, is left in the electrolysis cell, the cathode liquid is replaced by freshly prepared 6 N hydrochloric acid.
- the anode liquid is diluted to a platinum content of 120 g / l
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4243699 | 1992-12-18 | ||
| DE4243699A DE4243699C1 (de) | 1992-12-18 | 1992-12-18 | Elektrolytisches Verfahren zur Gewinnung von Platin hoher Reinheit aus verunreinigtem Platin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0609507A1 EP0609507A1 (de) | 1994-08-10 |
| EP0609507B1 true EP0609507B1 (de) | 1996-03-27 |
Family
ID=6476277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93118981A Expired - Lifetime EP0609507B1 (de) | 1992-12-18 | 1993-11-25 | Elektrolytisches Verfahren zur Gewinnung von Platin hoher Reinheit aus verunreinigtem Platin |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5393389A (ja) |
| EP (1) | EP0609507B1 (ja) |
| JP (1) | JP3286823B2 (ja) |
| AT (1) | ATE136066T1 (ja) |
| CA (1) | CA2111793C (ja) |
| DE (2) | DE4243699C1 (ja) |
| FI (1) | FI100607B (ja) |
| RU (1) | RU2093607C1 (ja) |
| ZA (1) | ZA938994B (ja) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19829274C2 (de) * | 1998-07-01 | 2002-06-20 | Otb Oberflaechentechnik Berlin | Verfahren zur Rückgewinnung von Edelmetallen |
| JP4607303B2 (ja) * | 2000-09-13 | 2011-01-05 | 株式会社フルヤ金属 | 金属電極から白金族金属を回収する方法 |
| US7255798B2 (en) * | 2004-03-26 | 2007-08-14 | Ion Power, Inc. | Recycling of used perfluorosulfonic acid membranes |
| DE102006056017B4 (de) * | 2006-11-23 | 2016-02-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Rückgewinnung von Edelmetallen |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB157785A (en) * | 1919-12-19 | 1922-04-10 | Eulampiu Slatineanu | Electrolytic process and apparatus for the separation of platinum from other metals contained in platiniferous materials |
| DE594408C (de) * | 1928-10-13 | 1934-03-16 | Degussa | Verfahren zum Raffinieren von Platin |
| US3891741A (en) * | 1972-11-24 | 1975-06-24 | Ppg Industries Inc | Recovery of fission products from acidic waste solutions thereof |
| US4382845A (en) * | 1981-08-10 | 1983-05-10 | Chevron Research Company | Selective electrowinning of palladium |
| EG19633A (en) * | 1983-12-22 | 1995-08-30 | Dynamit Nobel Ag | Process for chronologically staggered release of electronic explosive detonating device |
| DE3672956D1 (de) * | 1985-04-25 | 1990-08-30 | Chlorine Eng Corp Ltd | Verfahren zur aufloesung und wiedergewinnung edler metalle. |
| CA1322855C (en) * | 1986-07-16 | 1993-10-12 | Mamoru Hirako | Process for refining gold and apparatus employed therefor |
| JPH0238536A (ja) * | 1988-07-29 | 1990-02-07 | Tanaka Kikinzoku Kogyo Kk | イリジウム酸性溶液中の貴金属分離法 |
-
1992
- 1992-12-18 DE DE4243699A patent/DE4243699C1/de not_active Expired - Fee Related
-
1993
- 1993-11-25 EP EP93118981A patent/EP0609507B1/de not_active Expired - Lifetime
- 1993-11-25 AT AT93118981T patent/ATE136066T1/de not_active IP Right Cessation
- 1993-11-25 DE DE59302052T patent/DE59302052D1/de not_active Expired - Fee Related
- 1993-12-01 ZA ZA938994A patent/ZA938994B/xx unknown
- 1993-12-16 FI FI935661A patent/FI100607B/fi not_active IP Right Cessation
- 1993-12-17 JP JP34329093A patent/JP3286823B2/ja not_active Expired - Fee Related
- 1993-12-17 CA CA002111793A patent/CA2111793C/en not_active Expired - Fee Related
- 1993-12-17 RU RU9393056629A patent/RU2093607C1/ru not_active IP Right Cessation
- 1993-12-20 US US08/170,422 patent/US5393389A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3286823B2 (ja) | 2002-05-27 |
| FI100607B (fi) | 1998-01-15 |
| US5393389A (en) | 1995-02-28 |
| CA2111793A1 (en) | 1994-06-19 |
| RU2093607C1 (ru) | 1997-10-20 |
| ZA938994B (en) | 1994-08-03 |
| JPH06280074A (ja) | 1994-10-04 |
| DE4243699C1 (de) | 1994-02-10 |
| ATE136066T1 (de) | 1996-04-15 |
| EP0609507A1 (de) | 1994-08-10 |
| DE59302052D1 (de) | 1996-05-02 |
| FI935661A (fi) | 1994-06-19 |
| FI935661A0 (fi) | 1993-12-16 |
| CA2111793C (en) | 2003-05-13 |
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