JPS5723002A - Manufacture of magnetic metal powder - Google Patents
Manufacture of magnetic metal powderInfo
- Publication number
- JPS5723002A JPS5723002A JP9540280A JP9540280A JPS5723002A JP S5723002 A JPS5723002 A JP S5723002A JP 9540280 A JP9540280 A JP 9540280A JP 9540280 A JP9540280 A JP 9540280A JP S5723002 A JPS5723002 A JP S5723002A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- suspension
- iron
- manufacture
- hydroxide
- 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
Landscapes
- Magnetic Record Carriers (AREA)
- Hard Magnetic Materials (AREA)
- Paints Or Removers (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
PURPOSE: To raise the uniformity of grain size of and magnetic characteristic of magnetic metallic iron powder to be manufactured by adding a specific metal compound and nickel hydroxide to a suspension of ferrous hydroxide as a raw material.
CONSTITUTION: To an alkaline suspension(pH 11) of Fe(OH)2, at least one of the chlorides, sulfates, and nitrates of Zn and Al and Si compounds(e.g., water glass) is added in an atomic ratio to Fe of 0.001 to 0.1, and at the same time Ni(OH)2 is added in a Ni/Fe atomic ratio of 0.001 to 0.15. And, an oxygen-containing gas, e.g., air, is introduced into the suspension to precipitate alpha-Fe oxyhydroxide. The alpha-Fe oxyhydroxide is washed with water, dried to iron oxide, and then heated to 300 to 500°C for reduction in a reductive atmosphere to manufacture a magnetic iron composed primarily of iron hydroxide. Thus, a magnetic metal powder having a high denseness, an uniform grain size, and excellent magnetic characteristic can be obtained.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55095402A JPS5919169B2 (en) | 1980-07-11 | 1980-07-11 | Manufacturing method of metal magnetic powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55095402A JPS5919169B2 (en) | 1980-07-11 | 1980-07-11 | Manufacturing method of metal magnetic powder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5723002A true JPS5723002A (en) | 1982-02-06 |
JPS5919169B2 JPS5919169B2 (en) | 1984-05-02 |
Family
ID=14136663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55095402A Expired JPS5919169B2 (en) | 1980-07-11 | 1980-07-11 | Manufacturing method of metal magnetic powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5919169B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59207024A (en) * | 1983-05-10 | 1984-11-24 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS60181210A (en) * | 1984-02-27 | 1985-09-14 | Fuji Photo Film Co Ltd | Manufacture of ferromagnetic metallic powder |
JPH02132631A (en) * | 1989-04-10 | 1990-05-22 | Konica Corp | Magnetic recording medium |
JPH02168415A (en) * | 1989-04-10 | 1990-06-28 | Konica Corp | Magnetic recording medium |
JPH02175806A (en) * | 1988-12-27 | 1990-07-09 | Ishihara Sangyo Kaisha Ltd | Manufacture of metal magnetic powder for magnetic recorder |
CN112520902A (en) * | 2020-12-17 | 2021-03-19 | 梅征 | Method for recycling stainless steel pickling and scrubbing water |
-
1980
- 1980-07-11 JP JP55095402A patent/JPS5919169B2/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59207024A (en) * | 1983-05-10 | 1984-11-24 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS6322366B2 (en) * | 1983-05-10 | 1988-05-11 | Konika Kk | |
JPS60181210A (en) * | 1984-02-27 | 1985-09-14 | Fuji Photo Film Co Ltd | Manufacture of ferromagnetic metallic powder |
JPH02175806A (en) * | 1988-12-27 | 1990-07-09 | Ishihara Sangyo Kaisha Ltd | Manufacture of metal magnetic powder for magnetic recorder |
JPH02132631A (en) * | 1989-04-10 | 1990-05-22 | Konica Corp | Magnetic recording medium |
JPH02168415A (en) * | 1989-04-10 | 1990-06-28 | Konica Corp | Magnetic recording medium |
JPH0580048B2 (en) * | 1989-04-10 | 1993-11-05 | Konishiroku Photo Ind | |
CN112520902A (en) * | 2020-12-17 | 2021-03-19 | 梅征 | Method for recycling stainless steel pickling and scrubbing water |
CN112520902B (en) * | 2020-12-17 | 2022-07-29 | 梅征 | Method for recycling stainless steel pickling and scrubbing water |
Also Published As
Publication number | Publication date |
---|---|
JPS5919169B2 (en) | 1984-05-02 |
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