JPS54121207A - Preparation of ferromagnetic metal powder - Google Patents
Preparation of ferromagnetic metal powderInfo
- Publication number
- JPS54121207A JPS54121207A JP2820678A JP2820678A JPS54121207A JP S54121207 A JPS54121207 A JP S54121207A JP 2820678 A JP2820678 A JP 2820678A JP 2820678 A JP2820678 A JP 2820678A JP S54121207 A JPS54121207 A JP S54121207A
- Authority
- JP
- Japan
- Prior art keywords
- metal powder
- gas
- tank
- drier
- ferromagnetic metal
- 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
Abstract
PURPOSE: Ferromagnetic metal powder produced in wet reducting process is continuously dried and heat treated in nonoxidizing atomosphere, whereby O2 concentration is detected from nonoxdizing gas which flows through both process. The detected value is used for control so that O2 will not exceed a specified value thereby to assure safety.
CONSTITUTION: Ferromagnetic metal powder solution produced by wet reduction process is charged in the tank A through pipe 1. To prevent oxidation, innert gas such as N2 is admitted into the tank A through pipe 3, purging air, while the metal powder solution is stirred by the blades 5 and sent to the precipitation tank B at regular time through pump P1. From the tank B, separated water is extracted from top and slurry is sent from the bottom to the drier C. Nonoxdizing gas is continuously fed from the heater H to the drier C, which is heated while being agitated by the blade 15. In this manner, the metal powder is passed through the heat treatment device D to the production tank E while being protected by innert gas atomosphere. In order to control oxygen concentration in the drier C and the heat treatment device D, O2 concentration detector is installed so that when O2 exceeds explosion limit, for example 25%, N2 gas is automatically introduced into the system to thereby prevent explosion.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53028206A JPS5819721B2 (en) | 1978-03-14 | 1978-03-14 | Method for producing ferromagnetic metal powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53028206A JPS5819721B2 (en) | 1978-03-14 | 1978-03-14 | Method for producing ferromagnetic metal powder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54121207A true JPS54121207A (en) | 1979-09-20 |
JPS5819721B2 JPS5819721B2 (en) | 1983-04-19 |
Family
ID=12242178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53028206A Expired JPS5819721B2 (en) | 1978-03-14 | 1978-03-14 | Method for producing ferromagnetic metal powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5819721B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006325381A (en) * | 2005-05-18 | 2006-11-30 | Mutsuo Hirano | Reciprocating linear engine |
JP2007110882A (en) * | 2005-10-13 | 2007-04-26 | Mutsuo Hirano | Reciprocating linear engine |
-
1978
- 1978-03-14 JP JP53028206A patent/JPS5819721B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006325381A (en) * | 2005-05-18 | 2006-11-30 | Mutsuo Hirano | Reciprocating linear engine |
JP2007110882A (en) * | 2005-10-13 | 2007-04-26 | Mutsuo Hirano | Reciprocating linear engine |
Also Published As
Publication number | Publication date |
---|---|
JPS5819721B2 (en) | 1983-04-19 |
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