METHOD FOR GRINDING STRONTIUM CARBONATE AND IRON OXIDE MIXTURE IN STRONTIUM HEXAFERRITE PRODUCTION Russian patent published in 2017 - IPC C04B35/26 C04B35/632 

FIELD: chemistry.

SUBSTANCE: wet grinding of a stoichiometric mixture of strontium carbonate and iron oxide is carried out in a medium containing polyacrylic acid, castor oil, isopropyl alcohol, and oleic acid in the following ratio of components, wt %: polyacrylic acid of 0.2-0.6, castor oil and 0.5-2.0, isopropyl alcohol 2.0-5.0, oleic acid 0.1-0.5, water 28-45, a stoichiometric mixture of strontium carbonate and iron oxide - the rest.

EFFECT: increasing the activity when the mixture of initial ferrite-forming components is ground, which reduces the synthesis temperature and increases the coercive force from the magnetization of strontium hexaferrite.

1 tbl, 3 ex