GB573022A - Improved method of reducing molybdenum trioxide to molybdenum - Google Patents
Improved method of reducing molybdenum trioxide to molybdenumInfo
- Publication number
- GB573022A GB573022A GB11092/42A GB1109242A GB573022A GB 573022 A GB573022 A GB 573022A GB 11092/42 A GB11092/42 A GB 11092/42A GB 1109242 A GB1109242 A GB 1109242A GB 573022 A GB573022 A GB 573022A
- Authority
- GB
- United Kingdom
- Prior art keywords
- molybdenum
- reduction
- trioxide
- hydrogen
- inert gas
- 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
- C22B34/34—Obtaining molybdenum
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
573,022. Furnace atmospheres. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Aug. 7, 1942, No. 11092. Convention date, Oct. 1, 1941. [Class 51 (ii)] [Also in Group II] Molybdenum trioxide is reduced by heating it in a mixture of a reducing gas, which may be hydrogen and an inert gas, which may be steam or nitrogen, shutting off the supply of inert gas when the reduction of the trioxide to dioxide is nearly complete, and continuing the heating in the reducing gas to complete the reduction to molybdenum. The temperature and the rate of flow of the reducing gas may be increased before shutting off the inert gas and may be maintained at the higher values until the reduction is complete. The trioxide may be moistened with water and passed through an extrusion machine of usual form for the formation of pellets which after drying are placed in boats 19 and passed through an inclined tube 23 in a furnace 21. Water for the formation of steam is admitted through a tube 24 and hydrogen through a tube 32, a small exhaust pipe 34 being provided. In a modification, the reduction to dioxide may be effected in ammonia and the reduction to molybdenum completed in hydrogen.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US573022XA | 1941-10-01 | 1941-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB573022A true GB573022A (en) | 1945-11-02 |
Family
ID=22009767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11092/42A Expired GB573022A (en) | 1941-10-01 | 1942-08-07 | Improved method of reducing molybdenum trioxide to molybdenum |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB573022A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2145503A (en) * | 1983-08-24 | 1985-03-27 | Golding Ivor Lawrence Sydney | Process of producing protective atmosphere in heat treatment furnaces and ovens |
-
1942
- 1942-08-07 GB GB11092/42A patent/GB573022A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2145503A (en) * | 1983-08-24 | 1985-03-27 | Golding Ivor Lawrence Sydney | Process of producing protective atmosphere in heat treatment furnaces and ovens |
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