JPS57166323A - Preparation of yellow iron oxide - Google Patents
Preparation of yellow iron oxideInfo
- Publication number
- JPS57166323A JPS57166323A JP56051770A JP5177081A JPS57166323A JP S57166323 A JPS57166323 A JP S57166323A JP 56051770 A JP56051770 A JP 56051770A JP 5177081 A JP5177081 A JP 5177081A JP S57166323 A JPS57166323 A JP S57166323A
- Authority
- JP
- Japan
- Prior art keywords
- ferrous
- hydroxide
- iron oxide
- molar ratio
- sulfate
- 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.)
- Granted
Links
Landscapes
- Compounds Of Iron (AREA)
- Hard Magnetic Materials (AREA)
Abstract
PURPOSE: To prepare fine acicular yellow iron oxide, by introducing an oxygen- containing gas into an aqueous suspension of ferrous hydroxide having a specific molar ratio of ferrous hydroxide to ferrous sulfate and specific molar ratio of total iron to sulfuric acid radical, at or below a specific temperature.
CONSTITUTION: An oxygen-containing gas, e.g. air is introduced into a suspension of ferrous hydroxide containing ferrous hydroxide and ferrous sulfate at a molar ratio of 2:1W4:1 and total iron and sulfate radical at a molar ratio of 3:2W5:1 (especially 2:1W4:1) to obtain wet cake composed of fine acicular yellow iron oxide having uniform particle size. The cake is washed with water and dried to obtain the objective iron oxide. The reaction mothor liquid left after the separation of the wet cake is mixed with an alkali, especially sodium hydroxide or potassium hydroxide, and the precipitated ferrous sulfate and ferrous hydroxide are separated and recovered.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56051770A JPS57166323A (en) | 1981-04-08 | 1981-04-08 | Preparation of yellow iron oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56051770A JPS57166323A (en) | 1981-04-08 | 1981-04-08 | Preparation of yellow iron oxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57166323A true JPS57166323A (en) | 1982-10-13 |
| JPS6251899B2 JPS6251899B2 (en) | 1987-11-02 |
Family
ID=12896177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56051770A Granted JPS57166323A (en) | 1981-04-08 | 1981-04-08 | Preparation of yellow iron oxide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57166323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007302894A (en) * | 2006-05-13 | 2007-11-22 | Lanxess Deutschland Gmbh | Improved yellow iron oxide pigment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108502931B (en) * | 2018-06-06 | 2020-07-31 | 江苏大学 | Preparation method of sea urchin-shaped FeOOH micron material |
-
1981
- 1981-04-08 JP JP56051770A patent/JPS57166323A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007302894A (en) * | 2006-05-13 | 2007-11-22 | Lanxess Deutschland Gmbh | Improved yellow iron oxide pigment |
| JP2014111776A (en) * | 2006-05-13 | 2014-06-19 | Lanxess Deutschland Gmbh | Improved yellow iron oxide pigment |
| JP2017201039A (en) * | 2006-05-13 | 2017-11-09 | ランクセス・ドイチュランド・ゲーエムベーハー | Improved yellow iron oxide pigment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6251899B2 (en) | 1987-11-02 |
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