GB648494A - Improvements in or relating to the production of ferric oxide - Google Patents
Improvements in or relating to the production of ferric oxideInfo
- Publication number
- GB648494A GB648494A GB2083948A GB2083948A GB648494A GB 648494 A GB648494 A GB 648494A GB 2083948 A GB2083948 A GB 2083948A GB 2083948 A GB2083948 A GB 2083948A GB 648494 A GB648494 A GB 648494A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ferric oxide
- inert atmosphere
- product
- formate
- oxalate
- 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
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide (Fe2O3)
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/50—Agglomerated particles
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/51—Particles with a specific particle size distribution
- C01P2004/52—Particles with a specific particle size distribution highly monodisperse size distribution
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- Compounds Of Iron (AREA)
Abstract
g -Ferric oxide in finely-divided powder form is produced by heating finely-divided iron oxalate or formate to below 600 DEG C. in a substantially inert atmosphere, until the material is converted to ferroferric oxide, and then subjecting the product to controlled oxidation in air at a temperature below 350 DEG C. e.g. 100-200 DEG C. The inert atmosphere of the first operation may be steam, carbon dioxide or mixtures thereof with which a small amount of hydrogen or carbon monoxide may be present, a suitable mixture being that obtained by combustion of town gas. The material may be damped with water in the oxidation operation. The particle size of the iron formate or oxalate should be less than 1 micron diameter. The product may be used in the formation of a magnetizable coating on recording tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2083948A GB648494A (en) | 1948-08-06 | 1948-08-06 | Improvements in or relating to the production of ferric oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2083948A GB648494A (en) | 1948-08-06 | 1948-08-06 | Improvements in or relating to the production of ferric oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB648494A true GB648494A (en) | 1951-01-03 |
Family
ID=10152572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2083948A Expired GB648494A (en) | 1948-08-06 | 1948-08-06 | Improvements in or relating to the production of ferric oxide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB648494A (en) |
-
1948
- 1948-08-06 GB GB2083948A patent/GB648494A/en not_active Expired
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