JPS5777031A - Manufacture of black spinel type iron oxide containing solubilized zinc - Google Patents

Manufacture of black spinel type iron oxide containing solubilized zinc

Info

Publication number
JPS5777031A
JPS5777031A JP55149985A JP14998580A JPS5777031A JP S5777031 A JPS5777031 A JP S5777031A JP 55149985 A JP55149985 A JP 55149985A JP 14998580 A JP14998580 A JP 14998580A JP S5777031 A JPS5777031 A JP S5777031A
Authority
JP
Japan
Prior art keywords
manufacture
soln
iron oxide
oxide containing
alkali
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
JP55149985A
Other languages
Japanese (ja)
Other versions
JPS5943408B2 (en
Inventor
Keizo Mori
Yoshiro Okuda
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.)
Toda Kogyo Corp
Original Assignee
Toda Kogyo 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 Toda Kogyo Corp filed Critical Toda Kogyo Corp
Priority to JP55149985A priority Critical patent/JPS5943408B2/en
Publication of JPS5777031A publication Critical patent/JPS5777031A/en
Publication of JPS5943408B2 publication Critical patent/JPS5943408B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Compounds Of Iron (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

PURPOSE: To obtain a pigment with suitable magnetism by neutralizing a ferrous salt soln. with excess alkali, oxidizing a prescribed amount of the neutralization product with an oxidizing gas, adding an aqueous soln. of a zinc compound, and carrying out oxidation at prescribed alkalinity and temp.
CONSTITUTION: An equiv. or more of alkali is added to a ferrous salt soln. to precipitate hydroxide. An oxidizing gas is blown into the alkali liq. contg. the suspended precipitate to adjust the value of Fe2+/(Fe2++Fe3+) to 85W45%. To this liq. contg. partially oxidized Fe2+ is then added a water-soluble zinc compound by 2W30mol% to the amount of Fe, and the resulting soln. is oxidized at ≤2 gram ion/l free OH ion (OH-) concn. and ≥60°C.
COPYRIGHT: (C)1982,JPO&Japio
JP55149985A 1980-10-25 1980-10-25 Production method of black spinel type iron oxide containing zinc as solid solution Expired JPS5943408B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55149985A JPS5943408B2 (en) 1980-10-25 1980-10-25 Production method of black spinel type iron oxide containing zinc as solid solution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55149985A JPS5943408B2 (en) 1980-10-25 1980-10-25 Production method of black spinel type iron oxide containing zinc as solid solution

Publications (2)

Publication Number Publication Date
JPS5777031A true JPS5777031A (en) 1982-05-14
JPS5943408B2 JPS5943408B2 (en) 1984-10-22

Family

ID=15486941

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55149985A Expired JPS5943408B2 (en) 1980-10-25 1980-10-25 Production method of black spinel type iron oxide containing zinc as solid solution

Country Status (1)

Country Link
JP (1) JPS5943408B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6186424A (en) * 1984-09-28 1986-05-01 バスフ　アクチェン　ゲゼルシャフト Manufacture of particulate isotropic ferrite powder having spinel structure
US5143810A (en) * 1989-05-30 1992-09-01 Canon Kabushiki Kaisha Magnetic toner for developing electrostatic image

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6186424A (en) * 1984-09-28 1986-05-01 バスフ　アクチェン　ゲゼルシャフト Manufacture of particulate isotropic ferrite powder having spinel structure
US5143810A (en) * 1989-05-30 1992-09-01 Canon Kabushiki Kaisha Magnetic toner for developing electrostatic image

Also Published As

Publication number Publication date
JPS5943408B2 (en) 1984-10-22

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