METHOD OF PRODUCING BARIUM HEXAFERRITE Russian patent published in 2015 - IPC C01G49/00 C01F11/00 C25B1/18 H01F1/11 

FIELD: chemistry.

SUBSTANCE: invention can be used in producing magnetic powders, permanent magnets, resin-bonded magnets, magnetic liquids and high-density magnetic recording devices. The method of producing barium hexaferrite includes preparing a barium hexaferrite suspension, depositing said suspension in a neutral or weakly alkaline medium and drying. The barium hexaferrite suspension is obtained using an electrochemical method by dissolving electrodes made of steel St3, the distance between which is 5-15 mm, in an electroconductive solution of barium hydroxide and sodium chloride. The process is carried out with concentration of Ba(OH)₂ 7-10 mg/dm³, NaCl 3-5 mg/dm³, voltage 8-10 V, temperature 85-90°C, current density 0.11 A/cm².

EFFECT: invention simplifies production of fine barium hexaferrite powder.

1 tbl, 1 ex