JPS5527813A - Manufacture of tri-iron tetroxide from iron polysulfate - Google Patents
Manufacture of tri-iron tetroxide from iron polysulfateInfo
- Publication number
- JPS5527813A JPS5527813A JP9771078A JP9771078A JPS5527813A JP S5527813 A JPS5527813 A JP S5527813A JP 9771078 A JP9771078 A JP 9771078A JP 9771078 A JP9771078 A JP 9771078A JP S5527813 A JPS5527813 A JP S5527813A
- Authority
- JP
- Japan
- Prior art keywords
- iron
- soln
- polysulfate
- salt
- 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 easily manufacture Fe3O4 at a low equipment cost by reacting a soln. of iron polysulfate and a ferrous salt under specified conditions.
CONSTITUTION: A below 50wt% aq. soln. of iron polysulfate of general formula [Fe2(OH)n(SO4)3-n/2]m(where n≤2 and m≥10) is reacted with a ferrous salt in an amt. corresponding to about 1/2 eq. of ferric salt in the soln. at pH≥9 and above 40, pref. above 70°C. The pH is adjusted with an alkali such as NaOH or Na2CO3. As the ferrous, salt a ferrous salt contained in industrial waste water may be used besides FeSO4, Fe(OH)2, FeCl2, etc. Fe3O4 obtd. by this method is applicable to a magnetic tape, etc., and it may be calcined in the presence of air to give iron oxide red.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9771078A JPS5527813A (en) | 1978-08-10 | 1978-08-10 | Manufacture of tri-iron tetroxide from iron polysulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9771078A JPS5527813A (en) | 1978-08-10 | 1978-08-10 | Manufacture of tri-iron tetroxide from iron polysulfate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5527813A true JPS5527813A (en) | 1980-02-28 |
Family
ID=14199453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9771078A Pending JPS5527813A (en) | 1978-08-10 | 1978-08-10 | Manufacture of tri-iron tetroxide from iron polysulfate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5527813A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6127044A (en) * | 1995-09-13 | 2000-10-03 | Kabushiki Kaisha Toshiba | Method for producing titanium alloy turbine blades and titanium alloy turbine blades |
| CN104495952A (en) * | 2015-01-09 | 2015-04-08 | 南通宝聚颜料有限公司 | Preparation method of high-coercivity iron black for photocopy toner |
| CN104854314A (en) * | 2012-12-19 | 2015-08-19 | 三菱日立电力***株式会社 | Method for manufacturing turbine rotor blade |
-
1978
- 1978-08-10 JP JP9771078A patent/JPS5527813A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6127044A (en) * | 1995-09-13 | 2000-10-03 | Kabushiki Kaisha Toshiba | Method for producing titanium alloy turbine blades and titanium alloy turbine blades |
| CN104854314A (en) * | 2012-12-19 | 2015-08-19 | 三菱日立电力***株式会社 | Method for manufacturing turbine rotor blade |
| US9919392B2 (en) | 2012-12-19 | 2018-03-20 | Mitsubishi Hitachi Power Systems, Ltd. | Method for manufacturing turbine rotor blade |
| CN104495952A (en) * | 2015-01-09 | 2015-04-08 | 南通宝聚颜料有限公司 | Preparation method of high-coercivity iron black for photocopy toner |
| CN104495952B (en) * | 2015-01-09 | 2016-02-17 | 南通宝聚颜料有限公司 | A kind of preparation method of photocopy toner high-coercive force iron oxide black |
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