GB640438A - Improvements in production of gamma-ferric oxide hydrate and gamma-ferric oxide - Google Patents
Improvements in production of gamma-ferric oxide hydrate and gamma-ferric oxideInfo
- Publication number
- GB640438A GB640438A GB15960/48A GB1596048A GB640438A GB 640438 A GB640438 A GB 640438A GB 15960/48 A GB15960/48 A GB 15960/48A GB 1596048 A GB1596048 A GB 1596048A GB 640438 A GB640438 A GB 640438A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ferric oxide
- gamma
- production
- slurry
- per cent
- 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
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title abstract 3
- 235000003891 ferrous sulphate Nutrition 0.000 abstract 2
- 239000011790 ferrous sulphate Substances 0.000 abstract 2
- 239000002002 slurry Substances 0.000 abstract 2
- 229910000272 alkali metal oxide Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000007865 diluting Methods 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 abstract 1
- 230000001376 precipitating effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
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]
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Iron (AREA)
Abstract
Gamma ferric oxide hydrate is produced by precipitating a solution of ferrous sulphate, say of 15-20 per cent concentration with an alkali metal or alkaline earth metal hydroxide at 150-200 DEG F., maintaining the temperature until the slurry is thin, diluting and cooling the slurry by the addition of water or 0.5-2 per cent cold ferrous sulphate solution, and oxidizing by a current of air. The separated product is dried at 230 DEG F. and may be dehydrated at 450-500 DEG C.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US640438XA | 1947-07-11 | 1947-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB640438A true GB640438A (en) | 1950-07-19 |
Family
ID=22053190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15960/48A Expired GB640438A (en) | 1947-07-11 | 1948-06-14 | Improvements in production of gamma-ferric oxide hydrate and gamma-ferric oxide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB640438A (en) |
-
1948
- 1948-06-14 GB GB15960/48A patent/GB640438A/en not_active Expired
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