Process for producing ferrogmagnetic iron oxide powder comprisin

Process for producing ferromagnetic iron oxide

Process for producing ferromagnetic powder

Process for producing hexagonal-system ferrite powder

Process for producing hydrated iron oxide having silicon and pho

Process for producing magnetic FE oxide

Process for producing magnetic fluid

Process for producing magnetic metallic oxide

Process for producing nonstoichiometric ferroso-ferric oxides

Process for producing plate-like barium ferrite particles

Process for producing plate-like barium ferrite particles for ma

Process for producing single phase magnetite powder

Process for production of plate-like barium ferrite particles fo

Process for recycling used-up dry cells, and ferrite production

Process for the manufacture of ferromagnetic chromium dioxide

Process for the preparation of ferrite magnetic particulate for

Process for the preparation of ferrite magnetic particulate for

Process for the preparation of hexaferrites

Process for the preparation of isometric magnetic iron oxide

Process for the preparation of magnetic powders based on .gamma.