Title:
MANUFACTURE OF MAGNETIC POWDER
Document Type and Number:
Japanese Patent JPH076912
Kind Code:
A
Abstract:
PURPOSE: To provide a manufacturing method for magnetic powder capable of manufacturing in desirable particle diameter according to the applications.
CONSTITUTION: In order to manufacture the magnetic powder mainly made of magnetite out of iron material, neutral salt solution and the iron material are used respectively for the electrolyte and electrode materials of cathode and anode to perform alternating electrolysis at the potential and current density in the active melting region of the iron material meeting the temperature requirement for ferrite reaction to form iron hydroxide and after freezing and melting the magnetic powder at specific temperatures to be separated into solid and liquid while reusing the neutral salt electrolyte.
Inventors:
TANAKA AKIO
ITO MASAMI
SATO HITOSHI
KAWAJIRI HITOSHI
KOJIMA MASAYUKI
ITO MASAMI
SATO HITOSHI
KAWAJIRI HITOSHI
KOJIMA MASAYUKI
Application Number:
JP17239993A
Publication Date:
January 10, 1995
Filing Date:
June 18, 1993
Export Citation:
Assignee:
HITACHI PLANT ENG & CONSTR CO
International Classes:
C01G49/08; H01F1/11; H01F1/36; (IPC1-7): H01F1/36; C01G49/08
Next Patent: ELECTROMAGNETIC DEVICE