GB1190713A - Improvements in and relating to the production of Tungsten Monocarbide - Google Patents
Improvements in and relating to the production of Tungsten MonocarbideInfo
- Publication number
- GB1190713A GB1190713A GB06604/68A GB1660468A GB1190713A GB 1190713 A GB1190713 A GB 1190713A GB 06604/68 A GB06604/68 A GB 06604/68A GB 1660468 A GB1660468 A GB 1660468A GB 1190713 A GB1190713 A GB 1190713A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tungsten
- reaction
- oxygen
- carbide
- iron
- 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
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/949—Tungsten or molybdenum carbides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
1,190,713. Tungsten monocarbide. KENNAMETAL Inc. 5 April, 1968, No. 16604/68. Heading C1A. An oxygen compound of tungsten, such as a tungstate ore, or a synthetic tungstate, is reacted with calcium carbide, metallic aluminium, and up to 3À5 lb. of a compound containing iron bound to oxygen per pound of tungsten present, the proportions being such that a self-sustaining exothermic reaction giving a temperature of at least 4450‹ F. is produced; igniting a small proportion of the charge, and progressively adding the rest so as to maintain a continuous, smooth reaction, separating the slag, and recovering tungsten carbide from the crystalline product. The proportions of reactants are so arranged that reducing conditions prevail at the end of reaction. The kiln may be heated to 1400‹ F. prior to the start of the reaction. The source of tungsten preferably contains 24-80% by wt. tungsten, the calcium carbide may be present in the ratio 0À2-0À4 lb. per pound of tungsten, and the aluminium from 0À35-1À60 lb./lb. w. The iron-oxygen compound used may be approximately 30% oxygen. The tungsten carbide is recovered from the product by washing with water, and then dissolving away the iron. The charge may contain one or more of scheelite, ferberite, hubnerite and wolframite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB06604/68A GB1190713A (en) | 1968-04-05 | 1968-04-05 | Improvements in and relating to the production of Tungsten Monocarbide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB06604/68A GB1190713A (en) | 1968-04-05 | 1968-04-05 | Improvements in and relating to the production of Tungsten Monocarbide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1190713A true GB1190713A (en) | 1970-05-06 |
Family
ID=10080328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB06604/68A Expired GB1190713A (en) | 1968-04-05 | 1968-04-05 | Improvements in and relating to the production of Tungsten Monocarbide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1190713A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4489044A (en) * | 1983-10-21 | 1984-12-18 | The United States Of America As Represented By The Secretary Of The Interior | Formation of tungsten monocarbide from a molten tungstate-halide phase by gas sparging |
| USRE32612E (en) * | 1983-10-21 | 1988-02-23 | The United States Of America As Represented By The Secretary Of The Interior | Formation of tungsten monocarbide from a molten tungstate-halide phase by gas sparging |
-
1968
- 1968-04-05 GB GB06604/68A patent/GB1190713A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4489044A (en) * | 1983-10-21 | 1984-12-18 | The United States Of America As Represented By The Secretary Of The Interior | Formation of tungsten monocarbide from a molten tungstate-halide phase by gas sparging |
| WO1985001721A1 (en) * | 1983-10-21 | 1985-04-25 | Hubbard, Melvin, Lee | Formation of tungsten monocarbide from a molten tungstate-halide phase by gas sparging |
| USRE32612E (en) * | 1983-10-21 | 1988-02-23 | The United States Of America As Represented By The Secretary Of The Interior | Formation of tungsten monocarbide from a molten tungstate-halide phase by gas sparging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |