GB997314A - A process for preparing fine spherical particles of thorium oxide - Google Patents
A process for preparing fine spherical particles of thorium oxideInfo
- Publication number
- GB997314A GB997314A GB2305262A GB2305262A GB997314A GB 997314 A GB997314 A GB 997314A GB 2305262 A GB2305262 A GB 2305262A GB 2305262 A GB2305262 A GB 2305262A GB 997314 A GB997314 A GB 997314A
- Authority
- GB
- United Kingdom
- Prior art keywords
- particles
- solution
- water
- fine spherical
- thorium
- 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
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F15/00—Compounds of thorium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Fine spherical particles of thorium oxide are prepared by (a) forming a colloidal solution of thorium hydroxide nearly saturated with ammonium nitrate, by (b) dispersing the solution in a mixture of a water-miscible and a water-immiscible or partly water-miscible organic solvent, whereupon the colloidal particles coagulate, and (c) separating and calcining the particles. Step (b) may be performed in emulsifying apparatus or by injection of the solution via a glass nozzle into the organic solvents, e.g. an ethanol/butanol mixture. Concentrated aqueous ammonia solution may be added after step (b) to harden the thorium hydroxide globules and prevent further coagulation. After separation, the particles may be washed with aqueous ammonia to remove organic solvent before calcination. The particles are heated to above 600 DEG C. for conversion to the oxide, and may then be calcined at 1300 DEG C.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2344661 | 1961-07-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB997314A true GB997314A (en) | 1965-07-07 |
Family
ID=12110714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2305262A Expired GB997314A (en) | 1961-07-05 | 1962-06-15 | A process for preparing fine spherical particles of thorium oxide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB997314A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3384687A (en) * | 1966-08-02 | 1968-05-21 | Herbert P. Flack | Microsphere forming process for aqueous salt soultions using dissolved ammonia in a dehydrating solvent |
-
1962
- 1962-06-15 GB GB2305262A patent/GB997314A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3384687A (en) * | 1966-08-02 | 1968-05-21 | Herbert P. Flack | Microsphere forming process for aqueous salt soultions using dissolved ammonia in a dehydrating solvent |
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