Hydrated amorphous ferric oxide particle powder and its production

摘要: PURPOSE: To produce hydrated amorphous ferric oxide particle powder on an industrial scale by hydrolyzing jarosite produced from ferrous sulfate suitable as adsorbent for sulfur oxides, hydrogen sulfide, nitrogen etc., in air or a gas deodorant, catalyst, etc. CONSTITUTION: A mixture of aqueous solution sulfate, alkali metal ammonium and sulfuric acid is oxidized the obtained particles are washed suspended water. The suspension incorporated with hydroxide ammonia stirred under heating to form particles. separated filtration, dried obtain objective having average diameter 3-30μm, BET specific surface area 150-300m 2 /g bulk density 0.7-1.1g/mL. COPYRIGHT: (C)1994,JPO&Japio