JPS55167135A - Manufacture of yellow iron oxide - Google Patents

Manufacture of yellow iron oxide

Info

Publication number
JPS55167135A
JPS55167135A JP7428079A JP7428079A JPS55167135A JP S55167135 A JPS55167135 A JP S55167135A JP 7428079 A JP7428079 A JP 7428079A JP 7428079 A JP7428079 A JP 7428079A JP S55167135 A JPS55167135 A JP S55167135A
Authority
JP
Japan
Prior art keywords
soln
oxidation
ferrous sulfate
iron oxide
ferrous
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
JP7428079A
Other languages
Japanese (ja)
Other versions
JPS589052B2 (en
Inventor
Masao Kawamura
Seiichi Akutsu
Nobuyuki Kitagishi
Hirotsugu Konishi
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.)
Sumitomo Seika Chemicals Co Ltd
Original Assignee
Seitetsu Kagaku 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 Seitetsu Kagaku Co Ltd filed Critical Seitetsu Kagaku Co Ltd
Priority to JP7428079A priority Critical patent/JPS589052B2/en
Publication of JPS55167135A publication Critical patent/JPS55167135A/en
Publication of JPS589052B2 publication Critical patent/JPS589052B2/en
Expired legal-status Critical Current

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  • Compounds Of Iron (AREA)

Abstract

PURPOSE: To obtain high quality yellow iron oxide with no unevenness every lot by carrying out neutralization and oxidation of part of charged divalent iron salt in at least two stages when seed goethite is prepared in a seed process.
CONSTITUTION: An aqueous soln. contg. 0.3W1.3mol/l of ferrous sulfate is prepared and maintained at 20W35°C in an inert gas atmosphere. By adding alkali, the soln. is neutralized so that 5W30% of the ferrous sulfate is converted into ferrous hydroxide, and by blowing oxygen-contg. gas, the soln. is oxidized until the pH is lowered to 3W4. Alkali is further added to convert 5W30% of the ferrous sulfate into ferrous hydroxide, and oxidation is carried out. After carrying out such partial neutralization and oxidation twice or more the soln. is aged at 40W80°C in an inert gas atmosphere for 0.5W3hr, and then grain growing reaction is induced by a usual method.
COPYRIGHT: (C)1980,JPO&Japio
JP7428079A 1979-06-12 1979-06-12 Production method of yellow iron oxide Expired JPS589052B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7428079A JPS589052B2 (en) 1979-06-12 1979-06-12 Production method of yellow iron oxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7428079A JPS589052B2 (en) 1979-06-12 1979-06-12 Production method of yellow iron oxide

Publications (2)

Publication Number Publication Date
JPS55167135A true JPS55167135A (en) 1980-12-26
JPS589052B2 JPS589052B2 (en) 1983-02-18

Family

ID=13542534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7428079A Expired JPS589052B2 (en) 1979-06-12 1979-06-12 Production method of yellow iron oxide

Country Status (1)

Country Link
JP (1) JPS589052B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61140110A (en) * 1984-12-12 1986-06-27 Ishihara Sangyo Kaisha Ltd Manufacture of acicular alpha-feooh for magnetic recording material
US4806335A (en) * 1986-11-22 1989-02-21 Chisso Corporation Process for producing acicular iron α-oxyhydroxide particle powder
JPH01176231A (en) * 1987-12-29 1989-07-12 Kawasaki Steel Corp Method for producing multi-stage seed in goethite production
US5399278A (en) * 1991-05-31 1995-03-21 Toda Kogyo Corp. Process for producing acicular goethite particles and acicular magnetic iron oxide particles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61140110A (en) * 1984-12-12 1986-06-27 Ishihara Sangyo Kaisha Ltd Manufacture of acicular alpha-feooh for magnetic recording material
JPH0415601B2 (en) * 1984-12-12 1992-03-18 Ishihara Sangyo Kaisha
US4806335A (en) * 1986-11-22 1989-02-21 Chisso Corporation Process for producing acicular iron α-oxyhydroxide particle powder
JPH01176231A (en) * 1987-12-29 1989-07-12 Kawasaki Steel Corp Method for producing multi-stage seed in goethite production
US5399278A (en) * 1991-05-31 1995-03-21 Toda Kogyo Corp. Process for producing acicular goethite particles and acicular magnetic iron oxide particles

Also Published As

Publication number Publication date
JPS589052B2 (en) 1983-02-18

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