GB520690A - An improved process for the manufacture of iron oxide - Google Patents
An improved process for the manufacture of iron oxideInfo
- Publication number
- GB520690A GB520690A GB2849938A GB2849938A GB520690A GB 520690 A GB520690 A GB 520690A GB 2849938 A GB2849938 A GB 2849938A GB 2849938 A GB2849938 A GB 2849938A GB 520690 A GB520690 A GB 520690A
- Authority
- GB
- United Kingdom
- Prior art keywords
- iron oxide
- produce
- manufacture
- temperatures
- sodium
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Iron (AREA)
Abstract
520,690. Iron oxide. PRIESTMAN COLLIERIES, Ltd., and FRENCH, T. G. Sept. 30, 1938, No. 28499. [Class 1 (iii)] [Also in Group XXXVI] Iron oxide pigments are made by electrolysing a solution of a sodium or potassium salt using an iron anode. The current density may be 0.3 amps per sq. in., and the direction of the current may be periodically reversed. Air is blown into the electrolyte to oxidize the ferrous hydroxide produced. The precipitate is filtered, dried and may be heated to temperatures of 200-1000‹C. to produce oxides of various colours. Alternatively the filter cake is mixed with water to form a slurry, which is boiled with sodium hypochlorite solution. Ferrous sulphate is added and the boiling continued to produce a ferric hydroxide ochre pigment. This may also be varied in colour by calcining at different temperatures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2849938A GB520690A (en) | 1938-09-30 | 1938-09-30 | An improved process for the manufacture of iron oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2849938A GB520690A (en) | 1938-09-30 | 1938-09-30 | An improved process for the manufacture of iron oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB520690A true GB520690A (en) | 1940-05-01 |
Family
ID=10276601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2849938A Expired GB520690A (en) | 1938-09-30 | 1938-09-30 | An improved process for the manufacture of iron oxide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB520690A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2900236A (en) * | 1955-08-03 | 1959-08-18 | Audio Devices Inc | Production of ferromagnetic iron oxide |
| US3970738A (en) * | 1974-07-15 | 1976-07-20 | Toda Kogyo Corporation | Process for producing iron oxide products from waste liquids containing ferrous salts |
| GB2269183A (en) * | 1992-07-30 | 1994-02-02 | Charles Bowden | Elactrolytic production of metal oxides |
-
1938
- 1938-09-30 GB GB2849938A patent/GB520690A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2900236A (en) * | 1955-08-03 | 1959-08-18 | Audio Devices Inc | Production of ferromagnetic iron oxide |
| US3970738A (en) * | 1974-07-15 | 1976-07-20 | Toda Kogyo Corporation | Process for producing iron oxide products from waste liquids containing ferrous salts |
| GB2269183A (en) * | 1992-07-30 | 1994-02-02 | Charles Bowden | Elactrolytic production of metal oxides |
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