JPS55141505A - Production of metal powder - Google Patents
Production of metal powderInfo
- Publication number
- JPS55141505A JPS55141505A JP4997879A JP4997879A JPS55141505A JP S55141505 A JPS55141505 A JP S55141505A JP 4997879 A JP4997879 A JP 4997879A JP 4997879 A JP4997879 A JP 4997879A JP S55141505 A JPS55141505 A JP S55141505A
- Authority
- JP
- Japan
- Prior art keywords
- silicone oil
- metal powder
- blowing
- particles
- reduction
- 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
- Hard Magnetic Materials (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
PURPOSE: To produce the metal powder which does not cause sintering and is nevertheless good in reaction efficiency and has less danger of ignition by dispersing metal compound powder such as of iron oxalate into silicone oil, blowing H2 and reduction-treating the same under heating.
CONSTITUTION: Metal oxide composed primarily of Fe (oxyhydroxide) and metal compound powder such as of oxalate of Fe, Ni or Co is dispersed into silicone oil. Thence, this dispersion is heated and reduction-treated under H2 blowing. This yields the ferromagnetic metal powder used for magnetic recording media such as magnetic tapes. This method inhibits the sintering of the particles because the silicone oil interposes among the particles and further it improves the contact between H2 and particle surfaces because the reduced by-products of the particle surfaces are discharged to outside the system from the liquid phase owing to stirring of the silicone oil, thus the H2 consumption can be small.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4997879A JPS55141505A (en) | 1979-04-23 | 1979-04-23 | Production of metal powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4997879A JPS55141505A (en) | 1979-04-23 | 1979-04-23 | Production of metal powder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55141505A true JPS55141505A (en) | 1980-11-05 |
Family
ID=12846097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4997879A Pending JPS55141505A (en) | 1979-04-23 | 1979-04-23 | Production of metal powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55141505A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58162694A (en) * | 1982-03-19 | 1983-09-27 | Hitachi Zosen Corp | Preparation of coal from which ash is removed |
JPS59173207A (en) * | 1983-03-18 | 1984-10-01 | Hitachi Maxell Ltd | Metal cobalt magnetic powder and preparation thereof |
-
1979
- 1979-04-23 JP JP4997879A patent/JPS55141505A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58162694A (en) * | 1982-03-19 | 1983-09-27 | Hitachi Zosen Corp | Preparation of coal from which ash is removed |
JPS59173207A (en) * | 1983-03-18 | 1984-10-01 | Hitachi Maxell Ltd | Metal cobalt magnetic powder and preparation thereof |
JPH0553843B2 (en) * | 1983-03-18 | 1993-08-11 | Hitachi Maxell |
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