Process for producing magnetic metallic oxide
AssigneesJapan Metals & Chemicals Co., Ltd., Magune Co., Ltd.
InventorsTadayoshi Karasawa, Katsumi Kawano, Katsuji Uchiyama, Michio Yamazaki
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Abstract
A process for producing magnetic metallic oxide which comprises the steps of pulverizing at least one member selected from the group consisting of ferro-manganese, ferro-nickel, electrolytic manganese, electrolytic iron and electrolytic zinc, adding to the substance thus pulverized at least one member selected from the group consisting of oxides of Fe, Mn, Ni, Cu, Mg, Zn and Co and salts of Fe, Mn, Ni, Cu, Mg, Zn and Co which become oxides by heating, wet pulverizing and mixing the mixture upon oxidation, thereby producing a slurry, and heating said slurry at 800.degree. to 1450.degree. C. By this process, a magnetic ferrite can be stably and inexpensively synthesized.
Claims13
A process for producing magnetic metallic oxide comprising the steps of:
- pulverizing at least one member selected from the group consisting of ferro-manganese, ferro-nickel, electrolytic manganese, electroytic iron and electrolytic zinc, wherein said ferro-manganese and said ferro-nickel have a carbon content of at least 3% and said electrolytic manganese, said electrolytic iron and said electrolytic zinc are of high plurity,
- adding to said pulverized material at least one member selected from the group consisting of oxides of Fe, Mn, Ni, Cu, Mg, Zn and Co and salts of Fe, Mn, Ni, Cu, Mg, Zn and Co which become oxides by heating,
- ventilating the mixture with a gas containing oxygen and adding an aqueous solution containing at least one of an oxidizer and an acid radical,
- wet pulverizing and mixing the mixture upon oxidation of said pulverized material, thereby producing a slurry, and
- dehydrating, drying, and heating said slurry at 800.degree. to 1450.degree. C. to oxidize and calcine said slurry.
A process for producing magnetic metallic oxide comprising the steps of:
- pulverizing at least one member selected from the group consisting of ferro-manganese, ferro-nickel, electrolytic manganese, electrolytic iron and electrolytic zinc, wherein said ferro-manganese and said ferro-nickel have a carbon content of at least 3% and said electrolytic manganese, said electrolytic iron and said electrolytic zinc are of high purity,
- adding water to said pulverized material and ventilating the mixture with a gas containing oxygen to wet pulverize and oxidize said pulverized material,
- adding to the pulverized material at least one member selected from the group consisting of oxides of Fe, Mn, Ni, Cu, Mg, Zn and Co and salts of Fe, Mn, Ni, Cu, Mg, Zn and Co which become oxides by heating;
- wet pulverizing and mixing the mixture, thereby producing a slurry,
- dehydrating, drying and heating said slurry at 800.degree. to 1450.degree. C. to oxidize and calcine said slurry.
A process for producing magnetic metallic oxide comprising the steps of:
- pulverizing at least one member selected from the group consisting of ferro-manganese, ferro-nickel, electrolytic manganese, electrolytic iron and electrolytic zinc, wherein said ferro-manganese and said ferro-nickel have a carbon content of at least 3% and said electrolytic manganese, said electrolytic iron and said electrolytic zinc are of high purity,
- adding to said pulverized material a solution containing at least one member selected from the group consisting of an oxidizer and an acid radical to wet pulverize and oxidize said pulverized material,
- adding to said pulverized material at least one member selected from the group consisting of oxidies of Fe, Mn, Ni, Cu, Mg, Zn and Co and salts of Fe, Mn, Ni, Cu, Mg, Zn and Co which become oxides by heating,
- wet pulverizing and mixing the mixture, thereby producing a slurry, and
- dehydrating, drying and heating said slurry at 800.degree. to 1450.degree. C. to oxidize and calcine said slurry.
Dependencies are inferred from the claim text.