JPS5684322A - Manufacture of black iron oxide pigment - Google Patents
Manufacture of black iron oxide pigmentInfo
- Publication number
- JPS5684322A JPS5684322A JP16108779A JP16108779A JPS5684322A JP S5684322 A JPS5684322 A JP S5684322A JP 16108779 A JP16108779 A JP 16108779A JP 16108779 A JP16108779 A JP 16108779A JP S5684322 A JPS5684322 A JP S5684322A
- Authority
- JP
- Japan
- Prior art keywords
- salt
- soln
- aqueous
- iron oxide
- ferrous
- 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.)
- Pending
Links
Landscapes
- Compounds Of Iron (AREA)
Abstract
PURPOSE: To obtain black iron oxide pigment with uniform grain size and high dispersibility by adding a specified salt to an aqueous ferrous salt soln. and blowing air under predetermined conditions.
CONSTITUTION: In the manufacture of tri-iron tetroxide fine powder, to an aqueous ferrous salt soln. is added a salt similar to a salt formed by the neutralization of a ferrous salt and a pH adjusting alkali, and air is blown at 60W90°C and 6.5W 8.0pH. The amount of the salt added beforehand is equal to or more than the amount of the salt formed by the neutralization. The ferrous salt is ferrous sulfate and is used as an about 10W30wt% aqueous soln., and the alkali is an about 10W30wt% aqueous ammonia soln. The salt added beforehand is ammonium sulfate. Air is blown at about 0.5W3.0l/min rate to 1l of the reactive soln., and oxidation is completed in about 2W8hr. Thus, spherical black iron oxide pigment with uniform grain size and high dispersibility is obtd. This pigment gives a clear color tone.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16108779A JPS5684322A (en) | 1979-12-11 | 1979-12-11 | Manufacture of black iron oxide pigment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16108779A JPS5684322A (en) | 1979-12-11 | 1979-12-11 | Manufacture of black iron oxide pigment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5684322A true JPS5684322A (en) | 1981-07-09 |
Family
ID=15728360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16108779A Pending JPS5684322A (en) | 1979-12-11 | 1979-12-11 | Manufacture of black iron oxide pigment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5684322A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5336421A (en) * | 1990-11-22 | 1994-08-09 | Toda Kogyo Corp. | Spinel-type spherical, black iron oxide particles and process for the producing the same |
CN104071851A (en) * | 2013-03-25 | 2014-10-01 | 北京三聚环保新材料股份有限公司 | Process both for preparation of iron oxide black and combined production of ammonium sulfate |
CN105236496A (en) * | 2015-11-24 | 2016-01-13 | 郭秋丰 | Production method for preparing black iron oxide with ammonia circulation method |
-
1979
- 1979-12-11 JP JP16108779A patent/JPS5684322A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5336421A (en) * | 1990-11-22 | 1994-08-09 | Toda Kogyo Corp. | Spinel-type spherical, black iron oxide particles and process for the producing the same |
CN104071851A (en) * | 2013-03-25 | 2014-10-01 | 北京三聚环保新材料股份有限公司 | Process both for preparation of iron oxide black and combined production of ammonium sulfate |
CN104071851B (en) * | 2013-03-25 | 2016-06-22 | 北京三聚环保新材料股份有限公司 | A kind of iron oxide black preparation technology of coproduction of ammonia sulfate |
CN105236496A (en) * | 2015-11-24 | 2016-01-13 | 郭秋丰 | Production method for preparing black iron oxide with ammonia circulation method |
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