JPS6433019A - Production of acicular alpha-iron oxyhydroxide - Google Patents

Production of acicular alpha-iron oxyhydroxide

Info

Publication number
JPS6433019A
JPS6433019A JP18537487A JP18537487A JPS6433019A JP S6433019 A JPS6433019 A JP S6433019A JP 18537487 A JP18537487 A JP 18537487A JP 18537487 A JP18537487 A JP 18537487A JP S6433019 A JPS6433019 A JP S6433019A
Authority
JP
Japan
Prior art keywords
compd
aluminum
silicon
soln
suspension
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
Application number
JP18537487A
Other languages
Japanese (ja)
Inventor
Hiroyuki Yoshinaga
Koichi Kawashima
Michiji Okai
Tomiyoshi Kubo
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.)
Tosoh Corp
Original Assignee
Tosoh Corp
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 Tosoh Corp filed Critical Tosoh Corp
Priority to JP18537487A priority Critical patent/JPS6433019A/en
Publication of JPS6433019A publication Critical patent/JPS6433019A/en
Pending legal-status Critical Current

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  • Compounds Of Iron (AREA)

Abstract

PURPOSE:To obtain the title alpha-iron oxyhydroxide having an excelent acicular form keeping property even in a reduction stage and capable of coping with the ferromagnetic particles having a desired magnetic characteristic by supplying an aluminum or silicon compd. in the oxidation process of ferrous hydroxide. CONSTITUTION:An aq. soln. of a ferrous salt is allowed to react with an aq. soln. of an alkali metal hydroxide to obtain a suspension of ferrous hydroxide, and an oxygen-contg. gas is supplied to the suspension while adding an aq. soln. of an aluminum compd. and/or a silicon compd. to the suspension. A water- soluble compd. such as AlCl3, Al2(SO4)3, and NaAlO2 is preferably used as the aluminum compd., and a water-soluble compd. such as Na2SiO3 or Na2Si2O5 is preferably used as the silicon compd. The aq. solns. of an aluminum compd. and a silicon compd. can be continuously or intermittently added while supplying an oxygen-contg. gas.
JP18537487A 1987-07-27 1987-07-27 Production of acicular alpha-iron oxyhydroxide Pending JPS6433019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18537487A JPS6433019A (en) 1987-07-27 1987-07-27 Production of acicular alpha-iron oxyhydroxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18537487A JPS6433019A (en) 1987-07-27 1987-07-27 Production of acicular alpha-iron oxyhydroxide

Publications (1)

Publication Number Publication Date
JPS6433019A true JPS6433019A (en) 1989-02-02

Family

ID=16169684

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18537487A Pending JPS6433019A (en) 1987-07-27 1987-07-27 Production of acicular alpha-iron oxyhydroxide

Country Status (1)

Country Link
JP (1) JPS6433019A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0285302A (en) * 1988-08-06 1990-03-26 Bayer Ag Iron base needle like alloy powder, and production and use thereof
JPH0597442A (en) * 1991-10-01 1993-04-20 Mitsui Mining & Smelting Co Ltd Production of acicular alpha-iron oxyhydroxide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0285302A (en) * 1988-08-06 1990-03-26 Bayer Ag Iron base needle like alloy powder, and production and use thereof
JPH0597442A (en) * 1991-10-01 1993-04-20 Mitsui Mining & Smelting Co Ltd Production of acicular alpha-iron oxyhydroxide

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