PRODUCTION OF FERRIC ALPHA-OXYHYDROXIDE

PURPOSE:To provide a process for producing ferric alpha-oxyhydroxide free from residual sodium in the produced fusiform ferric alpha-oxyhydroxide even by using sodium carbonate as an alkali similar to conventional process. CONSTITUTION:Ferric alpha-oxyhydroxide is produced by neutralizing a ferrous...

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Bibliographische Detailangaben
Hauptverfasser:	YOSHIDA ISAO, OBAYASHI NOBUO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F ELECTRICITY INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS INDUCTANCES INORGANIC CHEMISTRY MAGNETS METALLURGY SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS
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Beschreibung
Zusammenfassung:	PURPOSE:To provide a process for producing ferric alpha-oxyhydroxide free from residual sodium in the produced fusiform ferric alpha-oxyhydroxide even by using sodium carbonate as an alkali similar to conventional process. CONSTITUTION:Ferric alpha-oxyhydroxide is produced by neutralizing a ferrous salt with an aqueous solution of sodium carbonate or a mixture of sodium carbonate and sodium hydroxide and oxidizing the obtained suspension composed mainly or ferrous carbonate. In the above process, the reaction system is incorporated with 0.1-5.0 pts.wt. of Ca and/or Ba based on 100 pts.wt. of Fe.