JPS54121206A - Preparation of ferromagnetic metal powder - Google Patents
Preparation of ferromagnetic metal powderInfo
- Publication number
- JPS54121206A JPS54121206A JP2820478A JP2820478A JPS54121206A JP S54121206 A JPS54121206 A JP S54121206A JP 2820478 A JP2820478 A JP 2820478A JP 2820478 A JP2820478 A JP 2820478A JP S54121206 A JPS54121206 A JP S54121206A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- metal powder
- ferromagnetic metal
- sent
- nonoxidizing gas
- 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
Abstract
PURPOSE: Ferromagnetic metal powder produced in wet reduction process is pretreated in intermediate stock tank containing nonoxidizing gas and then transferred to the next drying process, thereby efficiently dehydrating while preventing oxidation.
CONSTITUTION: Ferromagnetic metal powder solution produced by wet reduction process flows through pipe 1 into the tank A. To prevent oxidation, nonoxidizing gas such as N2 is admitted through pipe 3 into the tank A. The metal powder is kept floating in the tank A by rotation of the blade 5. The agitating metal powder solution is, while being protected from oxydation, sent by the pump P1 to the precipitating tank B where slurry is formed. From the tank B, separated water is extracted from the top and slurry is sent by the pump P2 to the drier C. The completely dehydrated ferromagnetic metal powder is, while being protected by nonoxidizing gas, sent by the rotary valve R1 to the heat treatment apparatus D. The heat treated product is delivered to the product tank E. Thus, the process reduces the time for dehydration and assures production safety.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2820478A JPS54121206A (en) | 1978-03-14 | 1978-03-14 | Preparation of ferromagnetic metal powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2820478A JPS54121206A (en) | 1978-03-14 | 1978-03-14 | Preparation of ferromagnetic metal powder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54121206A true JPS54121206A (en) | 1979-09-20 |
Family
ID=12242127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2820478A Pending JPS54121206A (en) | 1978-03-14 | 1978-03-14 | Preparation of ferromagnetic metal powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54121206A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106575912A (en) * | 2014-07-28 | 2017-04-19 | 日本电产科宝株式会社 | Linear vibration motor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51136552A (en) * | 1975-05-21 | 1976-11-26 | Fuji Photo Film Co Ltd | Method of producing ferromagnetic metal powder |
JPS5241154A (en) * | 1975-09-30 | 1977-03-30 | Fuji Photo Film Co Ltd | Method to manufacture ferromagnetic metal powder |
-
1978
- 1978-03-14 JP JP2820478A patent/JPS54121206A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51136552A (en) * | 1975-05-21 | 1976-11-26 | Fuji Photo Film Co Ltd | Method of producing ferromagnetic metal powder |
JPS5241154A (en) * | 1975-09-30 | 1977-03-30 | Fuji Photo Film Co Ltd | Method to manufacture ferromagnetic metal powder |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106575912A (en) * | 2014-07-28 | 2017-04-19 | 日本电产科宝株式会社 | Linear vibration motor |
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