| abstract |
The invention relates to a method for producing ferrites of the M type of the formula AFe 12 O 19 , of the Me 2 Y type of the formula A 2 Me 2 Fe 12 O 22 or of the spinel type of the formula MeFe 2 O 4 , where A for Ba, Sr, Pb and / or Ca and Me for Zn, Mn, Co, Cu, Fe (II) and / or 1/2 (Li (I) + Fe (III)), by heating a mixture of dewatered and oxidized iron (II) sulfate hydrate in a mixture with sodium and / or potassium carbonate as well as salts and / or oxides of the further A and / or Me cations required for ferrite formation in addition to Fe (III) at temperatures between 700 and 1200 ° C. and isolating the resulting ferrite by leaching with water. |