JPS5690904A - Production of ferromagnetic metal powder - Google Patents

Production of ferromagnetic metal powder

Info

Publication number
JPS5690904A
JPS5690904A JP16768279A JP16768279A JPS5690904A JP S5690904 A JPS5690904 A JP S5690904A JP 16768279 A JP16768279 A JP 16768279A JP 16768279 A JP16768279 A JP 16768279A JP S5690904 A JPS5690904 A JP S5690904A
Authority
JP
Japan
Prior art keywords
reduction
oxide powder
reducing
group
reducing 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.)
Granted
Application number
JP16768279A
Other languages
Japanese (ja)
Other versions
JPS6136048B2 (en
Inventor
Kiyotake Morita
Junji Mikami
Kimiteru Tagawa
Kiyoshi Matsuo
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP16768279A priority Critical patent/JPS5690904A/en
Publication of JPS5690904A publication Critical patent/JPS5690904A/en
Publication of JPS6136048B2 publication Critical patent/JPS6136048B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE: To obtain ferromagnetic metal powder of good needle characteristics by mixing water vapor into a reducing gas in the front half of reducing period in the heating reduction of oxide powder of iron or water-contg. metal oxide powder.
CONSTITUTION: At the time of making heating reduction of oxide powder of iron or water-contg. metal oxide powder with a reducing gas consisting essentially of hydrogen, water vapor is mixed into the reducing gas in the front half of the reduction period in which the rate of reduction is about 75%. Particularly before about 30% of the rate of reduction is desirable, and the reducing temp. is preferably about 300W500°C, and pressure about 0W100kg/cm2G. If necessary, it is also desirable to use metals of periodic table Ib group, II group and VIII group and α-Fe2O3 or α-FOOH whitch contain one or two or more kinds selected from Sn, Mn, Ti, Si, B, Al, Bi Pb, P, Sb, Cr, Mo, W. Thereby, the metal powder of improved coercive force and square ratio and well shaped particles is obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP16768279A 1979-12-25 1979-12-25 Production of ferromagnetic metal powder Granted JPS5690904A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16768279A JPS5690904A (en) 1979-12-25 1979-12-25 Production of ferromagnetic metal powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16768279A JPS5690904A (en) 1979-12-25 1979-12-25 Production of ferromagnetic metal powder

Publications (2)

Publication Number Publication Date
JPS5690904A true JPS5690904A (en) 1981-07-23
JPS6136048B2 JPS6136048B2 (en) 1986-08-16

Family

ID=15854264

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16768279A Granted JPS5690904A (en) 1979-12-25 1979-12-25 Production of ferromagnetic metal powder

Country Status (1)

Country Link
JP (1) JPS5690904A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596502A (en) * 1982-07-05 1984-01-13 Mitsui Toatsu Chem Inc Manufacture of improved ferromagnetic iron powder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH055200U (en) * 1991-07-04 1993-01-26 森平舞台機構株式会社 The approaching horizontal lifting balancer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596502A (en) * 1982-07-05 1984-01-13 Mitsui Toatsu Chem Inc Manufacture of improved ferromagnetic iron powder
JPH0341963B2 (en) * 1982-07-05 1991-06-25

Also Published As

Publication number Publication date
JPS6136048B2 (en) 1986-08-16

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