JPS5763605A - Manufacture of metallic magnetic powder - Google Patents

Manufacture of metallic magnetic powder

Info

Publication number
JPS5763605A
JPS5763605A JP55137418A JP13741880A JPS5763605A JP S5763605 A JPS5763605 A JP S5763605A JP 55137418 A JP55137418 A JP 55137418A JP 13741880 A JP13741880 A JP 13741880A JP S5763605 A JPS5763605 A JP S5763605A
Authority
JP
Japan
Prior art keywords
silicon compound
needlelike
iron oxyhydroxide
manufacture
magnetic powder
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
Application number
JP55137418A
Other languages
Japanese (ja)
Other versions
JPS6349722B2 (en
Inventor
Shintaro Suzuki
Hironori Sakumoto
Munehiko Takahashi
Yuichi Omote
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kanto Denka Kogyo Co Ltd
Original Assignee
Kanto Denka Kogyo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kanto Denka Kogyo Co Ltd filed Critical Kanto Denka Kogyo Co Ltd
Priority to JP55137418A priority Critical patent/JPS5763605A/en
Publication of JPS5763605A publication Critical patent/JPS5763605A/en
Publication of JPS6349722B2 publication Critical patent/JPS6349722B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Paints Or Removers (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE: To obtain ferromagnetic metallic powder for a magnetic recording body with high coercive force and saturation magnetic flux density suitable especially for high density recording by treating needlelike iron oxyhydroxide with a silicon compound followed by filtration, washing, calcination and reduction.
CONSTITUTION: Needlelike iron oxyhydroxide such as α-, β- γ-FeOOH or a mixture thereof is suspended in water, and a silicon compound such as Na2SiO3 is dissolved in the suspension, wall agitated, and mixed. The preferred amount of the silicon compound for the treatment is 0.1W10wt% to the amount of the iron oxyhydroxide as Fe2O3. The treated material is filtered with a filter or the like and washed. The resulting needlelike ironoxyhydroxide is calcinet at 400W800°C. The calcined material is then reduced at ≤600°C in a hydrogen atmosphere to manufacture the desired metallic magnetic powder.
COPYRIGHT: (C)1982,JPO&Japio
JP55137418A 1980-10-01 1980-10-01 Manufacture of metallic magnetic powder Granted JPS5763605A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55137418A JPS5763605A (en) 1980-10-01 1980-10-01 Manufacture of metallic magnetic powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55137418A JPS5763605A (en) 1980-10-01 1980-10-01 Manufacture of metallic magnetic powder

Publications (2)

Publication Number Publication Date
JPS5763605A true JPS5763605A (en) 1982-04-17
JPS6349722B2 JPS6349722B2 (en) 1988-10-05

Family

ID=15198160

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55137418A Granted JPS5763605A (en) 1980-10-01 1980-10-01 Manufacture of metallic magnetic powder

Country Status (1)

Country Link
JP (1) JPS5763605A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4487627A (en) * 1982-11-01 1984-12-11 Fuji Photo Film Co., Ltd. Method for preparing ferromagnetic metal particles
EP0154285A2 (en) * 1984-02-27 1985-09-11 Fuji Photo Film Co., Ltd. Process for producing ferromagnetic metal powder
JPH02175806A (en) * 1988-12-27 1990-07-09 Ishihara Sangyo Kaisha Ltd Manufacture of metal magnetic powder for magnetic recorder

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4883100A (en) * 1972-01-21 1973-11-06
JPS5177900A (en) * 1974-11-29 1976-07-06 Montedison Spa
JPS534895A (en) * 1976-06-16 1978-01-17 Fujitsu Ltd Manufacture of needle-shaped magnetic iron particles
JPS5422958A (en) * 1977-07-20 1979-02-21 Matsushita Electric Ind Co Ltd Dust remover for vacuum cleaner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4883100A (en) * 1972-01-21 1973-11-06
JPS5177900A (en) * 1974-11-29 1976-07-06 Montedison Spa
JPS534895A (en) * 1976-06-16 1978-01-17 Fujitsu Ltd Manufacture of needle-shaped magnetic iron particles
JPS5422958A (en) * 1977-07-20 1979-02-21 Matsushita Electric Ind Co Ltd Dust remover for vacuum cleaner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4487627A (en) * 1982-11-01 1984-12-11 Fuji Photo Film Co., Ltd. Method for preparing ferromagnetic metal particles
EP0154285A2 (en) * 1984-02-27 1985-09-11 Fuji Photo Film Co., Ltd. Process for producing ferromagnetic metal powder
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

Also Published As

Publication number Publication date
JPS6349722B2 (en) 1988-10-05

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