GB569444A - Improvements relating to the electrolytic purification of nickel - Google Patents
Improvements relating to the electrolytic purification of nickelInfo
- Publication number
- GB569444A GB569444A GB16148/43A GB1614843A GB569444A GB 569444 A GB569444 A GB 569444A GB 16148/43 A GB16148/43 A GB 16148/43A GB 1614843 A GB1614843 A GB 1614843A GB 569444 A GB569444 A GB 569444A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nickel
- compartments
- cobalt
- slimes
- tank
- 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
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
- C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
- C25C1/08—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese of nickel or cobalt
Abstract
569,444. Electrolytic refining. MOND NICKEL CO., Ltd. Oct. 1, 1943, No. 16148. Convention date, Nov. 5, 1942. [Class 41] [Also in Group III] In a process for the electrolytic purification of nickel by the anodic dissolution of impure nickel, the impure electrolytes being then purified, and pure nickel deposited therefrom cathodically, part of the usual all-sulphate anolyte is replaced by chloride ions, the composition being preferably 71 to 120 grams of sulphate ions, and 27 to 30 grams of chloride ions, per litre. The complete process is shown by the flow-sheet, Fig. 2, in which three Hybinette cells have soluble-anode compartments 1 and two have insoluble-anode compartments 2, the catholyte from each compartment 31 being returned to the anode compartments, and the compartments being separated from one another by the usual diaphragms. The impure nickel in cast form is inserted in compartments 1 containing, in addition to the sulphate and chloride, 40 to'60 grams of nickel, 20 to 30 of sodium, and 15 to 25 boric acid, per litre, the ratio of nickel to sodium being not less than 1.5: 1. The impure anolyte is continuously withdrawn and purified by the removal of iron, lead, and arsenic, and copper and cobalt, the former by oxidation and precipitation as oxide or hydroxide or arsenides, in tanks 6 ... 9 in which air is blown, nickel carbonate or hydroxide added, and chlorine from compartments 2 introduced. The resulting slimes are separated in a filter press 12, and the electrolyte containing copper and cobalt (of which some may have been removed in the slimes) cleared of copper in a series of tanks 13 ... 22 by the addition of nickel powder which precipitates the copper as cement, and by the return of solids from a later stage of the cementation process. The electrolyte from the filter press 22 may, if sufficiently pure, be returned at 32 direct to the cathode compartments 31, but if excess cobalt remains, the electrolyte is treated in tank 28 with chlorine and nickel carbonate before being returned, the cobalt being precipitated as hydroxide. The slimes from filter press 12 contain in addition to the iron, arsenic, and lead, traces of nickel and cobalt which are recovered, the former for return to tank 8. The treatment depends on the amount of cobalt present and, if there is over 5-6 per cent, the slimes are washed and treated in tank 33 with SO2 and dissolved in H2SO4. More slimes are added in tank 35 and iron precipitated. Reduced nickel powder removes copper and NaClO removes cobalt, the nickel solution being then treated with sodium carbonate to produce the nickel carbonate for the initial copper cementation at tank 8. The alternative slimes treatment, for low-cobalt content, is to add chlorine from compartments 2 and a filter press 79 to a tank 60, iron being removed from a filter press 64 and the residual solution being returned to tank 3. Gold, silver and metals of the platinum group which form anode slimes in compartments 1, are washed from the spent anodes 66 by means of anolyte from compartments 1 and filtered at 74, the solids being further washed and filtered at 79 to reduce the chlorine content. The sulphur is reduced by roasting in a calciner 80 and the resulting oxidized metal introduced, with coke, into an anode electric furnace 82 and cast into moulds 83 to form anodes. Details of temperature and pH values at the various stages of the process are given.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA569444X | 1942-11-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB569444A true GB569444A (en) | 1945-05-24 |
Family
ID=4171826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16148/43A Expired GB569444A (en) | 1942-11-05 | 1943-10-01 | Improvements relating to the electrolytic purification of nickel |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB569444A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3334034A (en) * | 1964-02-04 | 1967-08-01 | Nickalloy Inc | Electrolytic method for the recovery of nickel and cobalt |
CN111663153A (en) * | 2020-05-20 | 2020-09-15 | 金川集团股份有限公司 | Method for inhibiting impurities of lead and zinc from being separated out at cathode in nickel electrolysis process |
CN112513334A (en) * | 2018-07-20 | 2021-03-16 | 科思创知识产权两合公司 | Method for improving nickel electrode performance |
US11319613B2 (en) | 2020-08-18 | 2022-05-03 | Enviro Metals, LLC | Metal refinement |
-
1943
- 1943-10-01 GB GB16148/43A patent/GB569444A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3334034A (en) * | 1964-02-04 | 1967-08-01 | Nickalloy Inc | Electrolytic method for the recovery of nickel and cobalt |
CN112513334A (en) * | 2018-07-20 | 2021-03-16 | 科思创知识产权两合公司 | Method for improving nickel electrode performance |
CN112513334B (en) * | 2018-07-20 | 2023-12-22 | 科思创知识产权两合公司 | Method for improving nickel electrode performance |
CN111663153A (en) * | 2020-05-20 | 2020-09-15 | 金川集团股份有限公司 | Method for inhibiting impurities of lead and zinc from being separated out at cathode in nickel electrolysis process |
US11319613B2 (en) | 2020-08-18 | 2022-05-03 | Enviro Metals, LLC | Metal refinement |
US11578386B2 (en) | 2020-08-18 | 2023-02-14 | Enviro Metals, LLC | Metal refinement |
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