JPS55162431A - Manufacture of magnetite - Google Patents
Manufacture of magnetiteInfo
- Publication number
- JPS55162431A JPS55162431A JP7061379A JP7061379A JPS55162431A JP S55162431 A JPS55162431 A JP S55162431A JP 7061379 A JP7061379 A JP 7061379A JP 7061379 A JP7061379 A JP 7061379A JP S55162431 A JPS55162431 A JP S55162431A
- Authority
- JP
- Japan
- Prior art keywords
- soln
- concn
- alkali
- added
- particles
- 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
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 6
- 230000001590 oxidative effect Effects 0.000 abstract 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract 3
- 239000003513 alkali Substances 0.000 abstract 3
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract 3
- 239000002245 particle Substances 0.000 abstract 3
- 229910021577 Iron(II) chloride Inorganic materials 0.000 abstract 2
- 238000007664 blowing Methods 0.000 abstract 2
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 abstract 2
- FLTRNWIFKITPIO-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe] FLTRNWIFKITPIO-UHFFFAOYSA-N 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Landscapes
- Compounds Of Iron (AREA)
- Hard Magnetic Materials (AREA)
Abstract
PURPOSE: To manufacture magnetite particles with superior settleability by adding an alkali soln. to a ferrous salt soln. and blowing an oxidizing gas while adjusting the concn. of the ferrous salt, the amount of the alkali added and the ozone concn. of the oxidizing gas to specified values.
CONSTITUTION: An aqueous soln. of an alkali such as NaOH is added to an aqueous soln. of a ferrous salt such as FeCl2 and agitated to deposit Fe(OH)3 particles. By blowing air contg. a highly oxidizing gas such as ozone the Fe(OH)3 particles are oxidized to form magnetite (Fe3O4) powder. The concn. of the FeCl2 as starting material in the soln. is adjusted to 0.65W9.1wt% as Fe, and the NaOH soln. added is 0.98W1.4 times as much as the Fe contained by chemical equivalent. In addition, by adjusting the ozone content of the air used in the oxidizing process to 2W20g/Nm3 Fe3O4 with superior settleability is obtd. in a very short time.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54070613A JPS586690B2 (en) | 1979-06-07 | 1979-06-07 | How to manufacture magnetite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54070613A JPS586690B2 (en) | 1979-06-07 | 1979-06-07 | How to manufacture magnetite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55162431A true JPS55162431A (en) | 1980-12-17 |
| JPS586690B2 JPS586690B2 (en) | 1983-02-05 |
Family
ID=13436615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54070613A Expired JPS586690B2 (en) | 1979-06-07 | 1979-06-07 | How to manufacture magnetite |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS586690B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100355156B1 (en) * | 1999-12-07 | 2002-10-11 | 동부한농화학 주식회사 | Black magnetite powder manufacturing method |
-
1979
- 1979-06-07 JP JP54070613A patent/JPS586690B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100355156B1 (en) * | 1999-12-07 | 2002-10-11 | 동부한농화학 주식회사 | Black magnetite powder manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS586690B2 (en) | 1983-02-05 |
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