GB695843A - Method for recovering as calcium tungstate the tungsten contained in chips, shavings, scales and the like residual matter from metallurgical manufacturing operations - Google Patents
Method for recovering as calcium tungstate the tungsten contained in chips, shavings, scales and the like residual matter from metallurgical manufacturing operationsInfo
- Publication number
- GB695843A GB695843A GB19942/51A GB1994251A GB695843A GB 695843 A GB695843 A GB 695843A GB 19942/51 A GB19942/51 A GB 19942/51A GB 1994251 A GB1994251 A GB 1994251A GB 695843 A GB695843 A GB 695843A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shavings
- scales
- recovering
- chips
- manufacturing operations
- 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
- C01G41/00—Compounds of tungsten
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Tungsten is recovered from residues obtained during metallurgical treatments by first converting the tungsten to sodium tungstate, either by boiling the residues with caustic soda solution or fusing with sodium carbonate, and then precipitating calcium tungstate from a solution of the sodium tungstate obtained by double decomposition with calcium chloride solution.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR695843X | 1951-06-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB695843A true GB695843A (en) | 1953-08-19 |
Family
ID=9046341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19942/51A Expired GB695843A (en) | 1951-06-06 | 1951-08-23 | Method for recovering as calcium tungstate the tungsten contained in chips, shavings, scales and the like residual matter from metallurgical manufacturing operations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB695843A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4629503A (en) * | 1985-04-17 | 1986-12-16 | Ramot - University Authority For Applied Research And Industrial Development | Process for the recovery of tungsten in a pure form from tungsten-containing materials |
| CN111057840A (en) * | 2019-12-31 | 2020-04-24 | 荆门德威格林美钨资源循环利用有限公司 | Method for efficiently removing silicon and phosphorus from crude sodium tungstate solution |
-
1951
- 1951-08-23 GB GB19942/51A patent/GB695843A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4629503A (en) * | 1985-04-17 | 1986-12-16 | Ramot - University Authority For Applied Research And Industrial Development | Process for the recovery of tungsten in a pure form from tungsten-containing materials |
| CN111057840A (en) * | 2019-12-31 | 2020-04-24 | 荆门德威格林美钨资源循环利用有限公司 | Method for efficiently removing silicon and phosphorus from crude sodium tungstate solution |
| CN111057840B (en) * | 2019-12-31 | 2021-05-18 | 荆门德威格林美钨资源循环利用有限公司 | Method for efficiently removing silicon and phosphorus from crude sodium tungstate solution |
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