GB735791A - Treatment of nickel and cobalt solutions - Google Patents
Treatment of nickel and cobalt solutionsInfo
- Publication number
- GB735791A GB735791A GB8773/53A GB877353A GB735791A GB 735791 A GB735791 A GB 735791A GB 8773/53 A GB8773/53 A GB 8773/53A GB 877353 A GB877353 A GB 877353A GB 735791 A GB735791 A GB 735791A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cobalt
- nickel
- ammonium sulphate
- solution
- sulphate
- 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
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G51/00—Compounds of cobalt
- C01G51/12—Complexes with ammonia
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Nickel ammonium sulphate and cobalt ammonium sulphate and ammonium sulphate are prepared from an acid sulphate solution of nickel and cobalt by reducing the acidity of the solution to a pH between 3 and 7 with ammonia, arranging to have at least one mol. of ammonium sulphate per each mol. of nickel and cobalt sulphate, concentrating the solution by evaporation to completely p precipitate the nickel as mixed crystals of nickel ammonium sulphate and cobalt ammonium sulphate and discontinuing the evaporation at a point where the precipitated crystals contain from 1.2 to 3 mols. of ammonium sulphate for each mol. of nickel and cobalt sulphate, separating the precipitated crystals from the mother liquor and then evaporating the major part, but not all of the water from the mother liquor, thereby forming ammonium sulphate crystals which are separated, after which the final mother liquor is recycled to the first evaporation step. Such mother liquor still contains dissolved cobalt. Both evaporation steps are preferably conducted at 20 DEG to 60 DEG C. and the second evaporation step is preferably stopped when the cobalt content of the ammonium sulphate crystals is not more than 0.1 per cent and the cobalt concentration in the mother liquor is between 2.5 and 4 grams per litre. The mixed crystals of nickel ammonium sulphate and cobalt ammonium sulphate are preferably redissolved in water and the solution saturated with ammonia to form complex amine salts of the metal, which solution on heating to 230 DEG C. under pressure in the presence of an oxidizing gas forms a precipitate of crystalline cobaltic amine salt free from nickel. The cobalt salt is separated and the nickel solution further processed in known manner. The sulphate solutions to which the invention is applied are preferably freed from lead, copper and iron before treatment, the iron being removed from the lead-free solution preferably as in Specification 695,517 and the copper removed next. The original feed solution may contain about 6 per cent free sulphuric acid. According to a typical example a solution of cobalt and nickel is treated with anhydrous ammonia until the pH is brought to 4 and the solution evaporated at 60 DEG C. until the crystals separated shows a molar ratio of ammonium sulphate to nickel and cobalt sulphate of 2.14 to 1. The separated crystals contained 99.96 per cent of the nickel and 97.1 per cent of the cobalt. The mother liquor was then evaporated at 50 DEG C. to crystallize ammonium sulphate containing 0.05 per cent cobalt and bring the cobalt concentration in the solution to 3.5 g.p.l. The ammonium sulphate crystals were separated and the mother liquor recycled to the first evaporator.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US735791XA | 1952-04-22 | 1952-04-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB735791A true GB735791A (en) | 1955-08-31 |
Family
ID=22114543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8773/53A Expired GB735791A (en) | 1952-04-22 | 1953-03-30 | Treatment of nickel and cobalt solutions |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB735791A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5468281A (en) * | 1992-05-19 | 1995-11-21 | Sherritt Gordon Limited | Process for the separation of cobalt from nickel |
-
1953
- 1953-03-30 GB GB8773/53A patent/GB735791A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5468281A (en) * | 1992-05-19 | 1995-11-21 | Sherritt Gordon Limited | Process for the separation of cobalt from nickel |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2189488A (en) | Process of separation, by floating, of ammonium chloride from its mixture with alkaline salts | |
US1946068A (en) | Method of treating polyhalite | |
GB735791A (en) | Treatment of nickel and cobalt solutions | |
US2277778A (en) | Process for producing salts | |
US2061191A (en) | Treatment of raw phosphates | |
US1903815A (en) | Process for the production of nitrites | |
US3947496A (en) | Process for recovering glycine from sodium sulfate solutions | |
GB343701A (en) | Method of treating solutions obtained in leaching phosphate rock with nitric acid and ammonium sulphate | |
US2258545A (en) | Process of purifying electrolytic cell liquor | |
US1619666A (en) | Process for the extraction of ammonium-aluminum sulphate from aluminum-sulphate solutions containing ferric compounds | |
US1936316A (en) | Method of leaching phosphate rock with nitric acid and ammonium sulphate | |
US2334210A (en) | Manganese electrolyte purification | |
US2106196A (en) | Process for removing and/or preventing the deposition of scale in evaporators | |
US1964158A (en) | Process for the simultaneous production of potassium nitrate and ammonium sulphate | |
US2106168A (en) | Production of alkali metal nitrates | |
US1876366A (en) | Manufacture of citrates and citric acid | |
US2448425A (en) | Process for the utilization of ferrous sulfate solutions in the manufacture of ferric alums | |
GB816573A (en) | Method of manufacturing fertilisers from calcium nitrate and urea | |
US2024370A (en) | Production of potassium nitrate | |
GB690134A (en) | Improvements in or relating to the preparation of new compounds containing manganese | |
US2806881A (en) | Production of acrylamide | |
US1133086A (en) | Production of ammonium sulfate. | |
GB1334991A (en) | Process for the manufacture of nitrilotriacetonitrile | |
US1958760A (en) | Manufacture of sodium sulphate | |
US2859091A (en) | Recovery of uranium from pitchblende ores |