METHOD OF PRODUCING MIXTURE OF FRACTIONS OF OXIDANT FROM CLASS OF PERCHLORATES Russian patent published in 2014 - IPC C06B21/00 

FIELD: chemistry.

SUBSTANCE: method of producing a mixture of oxidant fractions includes dosing and mixing coarse fractions with particles with a size of 160-315 mcm and fine fractions of ammonium perchlorate with specific surface of 6500-7500 cm²/g, with fine fraction being obtained by crystallisation of an oxidant from water solution of its finely disperse spraying in a thermal chamber, and contains an anti-caking additive - silicon dioxide. Coarse and fine fractions are mixed in ratio 73/27÷70/30 with additional introduction of silicon dioxide. Mixing is performed under conditions of rotational-vibrational motion of mixture due to displacement of a reservoir axis with respect to rotation axis by 45° with further provision of fluidised state of the mixture by supply into a hermetic reservoir of dried air under pressure not more than 0.07 MPa with simultaneous discharge from the reservoir under vacuum.

EFFECT: prevention of agglomeration of particles of oxidant fractions both in the time of mixing and in the process of the mixture discharge, and a course of side reactions with formation of aggressive gases, which makes it possible to avoid a negative impact on VHRF characteristics, ensure stability of physical-mechanical and power characteristics of fuel, as well as ecological safety of production.

2 dwg, 2 tbl, 14 ex