GB1137518A - Process for the recovery of tungsten values - Google Patents
Process for the recovery of tungsten valuesInfo
- Publication number
- GB1137518A GB1137518A GB2578966A GB2578966A GB1137518A GB 1137518 A GB1137518 A GB 1137518A GB 2578966 A GB2578966 A GB 2578966A GB 2578966 A GB2578966 A GB 2578966A GB 1137518 A GB1137518 A GB 1137518A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tungsten
- tungstic acid
- hcl
- recovery
- values
- 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
- C22B34/00—Obtaining refractory metals
- C22B34/30—Obtaining chromium, molybdenum or tungsten
- C22B34/36—Obtaining tungsten
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
1,137,518. Recovery of tungsten values. DOW CHEMICAL CO. 9 June, 1966, No. 25789/66. Heading C1A. High purity tungsten values are recovered as tungstic acid by treating a tungsten bearing ore or concentrate with a concentrated (30- 33%) solution of HCl or HBr in an alcoholwater mixture (water 0-70 volume per cent), at a temperature between 40‹ and 70‹ C. for 15 minutes to 4 hours using a ratio (equivalents) of HCl to WO 3 of at least 3. The alcohol used may be methanol, ethanol or propanol. The resulting solution is separated from any undissolved solid residue and the hydrogen halide concentration is then reduced, either by dilution, neutralization or heating to reflux, causing precipitation of tungstic acid. This is washed with aqueous HCl (6-12M) which may contain 0À05% HNO 3 . The resultant tungstic acid can be dried or converted by ignition to WO 3 . The tungsten ore may be ground or milled before use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2578966A GB1137518A (en) | 1966-06-09 | 1966-06-09 | Process for the recovery of tungsten values |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2578966A GB1137518A (en) | 1966-06-09 | 1966-06-09 | Process for the recovery of tungsten values |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1137518A true GB1137518A (en) | 1968-12-27 |
Family
ID=10233335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2578966A Expired GB1137518A (en) | 1966-06-09 | 1966-06-09 | Process for the recovery of tungsten values |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1137518A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116282171A (en) * | 2023-05-26 | 2023-06-23 | 崇义章源钨业股份有限公司 | Method for preparing ammonium tungstate solution |
-
1966
- 1966-06-09 GB GB2578966A patent/GB1137518A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116282171A (en) * | 2023-05-26 | 2023-06-23 | 崇义章源钨业股份有限公司 | Method for preparing ammonium tungstate solution |
| CN116282171B (en) * | 2023-05-26 | 2023-08-22 | 崇义章源钨业股份有限公司 | Method for preparing ammonium tungstate solution |
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