GB461222A - Process for purifying metallic cadmium - Google Patents
Process for purifying metallic cadmiumInfo
- Publication number
- GB461222A GB461222A GB12399/36A GB1239936A GB461222A GB 461222 A GB461222 A GB 461222A GB 12399/36 A GB12399/36 A GB 12399/36A GB 1239936 A GB1239936 A GB 1239936A GB 461222 A GB461222 A GB 461222A
- Authority
- GB
- United Kingdom
- Prior art keywords
- caustic soda
- zinc
- cadmium
- metal
- molten
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B17/00—Obtaining cadmium
- C22B17/06—Refining
-
- 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
- C22B17/00—Obtaining cadmium
- C22B17/02—Obtaining cadmium by dry processes
-
- 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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/04—Obtaining zinc by distilling
Abstract
Zinc is removed from cadmium by treating the impure cadmium in molten state with a substance such as caustic soda which reacts with the zinc but not with the cadmium, any iron present being eliminated at the same time. Contact between the metal and reagent may be effected by covering the metal with the reagent and injecting water or caustic soda solution; or the molten metal may be pumped through a layer of molten caustic soda, or the two may be otherwise agitated together mechanically or by means of a gas. The spent soda may be dissolved and treated with carbon dioxide for the production of zinc carbonate, and the sodium carbonate obtained may be reconverted to caustic soda and used again in the process.ALSO:Zinc is removed from cadmium by treating the impure cadmium in molten state with a substance such as caustic soda which reacts with the zinc but not with the cadmium, any iron present being eliminated at the same time. Contact between the metal and reagent may be effected by covering the metal with the reagent and injecting water or caustic soda solution; or the molten metal may be pumped through a layer of molten caustic soda, or the two may be otherwise agitated together mechanically or by means of a gas. The treatment may be applied until the amount of zinc remaining is 0,003 per cent or less. The spent soda may be dissolved and treated with carbon dioxide for the production of zinc carbonate, and the sodium carbonate obtained may be reconverted to caustic soda and used again in the process.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE461222X | 1936-03-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB461222A true GB461222A (en) | 1937-02-12 |
Family
ID=3869993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12399/36A Expired GB461222A (en) | 1936-03-21 | 1936-05-01 | Process for purifying metallic cadmium |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB461222A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105039710A (en) * | 2015-07-09 | 2015-11-11 | 中国科学院金属研究所 | Enrichment and separation method of cadmium in waste circuit board multi-metal hybrid resources |
-
1936
- 1936-05-01 GB GB12399/36A patent/GB461222A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105039710A (en) * | 2015-07-09 | 2015-11-11 | 中国科学院金属研究所 | Enrichment and separation method of cadmium in waste circuit board multi-metal hybrid resources |
| CN105039710B (en) * | 2015-07-09 | 2017-02-01 | 中国科学院金属研究所 | Enrichment and separation method of cadmium in waste circuit board multi-metal hybrid resources |
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