AMMONIUM PERCHLORATE PREPARATION METHOD Russian patent published in 2005 - IPC

FIELD: rocket fuels.

SUBSTANCE: invention proposes a method for preparation of ammonium perchlorate for compounded solid rocked fuel, which is characterized by preparation of coating solution in liquid carrier via dissolution of lecithin in trifluorotrichloroethane or methylene dichloride, preparation of ammonium perchlorate suspension from ammonium perchlorate and above-prepared solution, breakage of suspension by means of glass beads on two twin mills during 1 to 10 h until ammonium perchlorate having particle size 2.0 to 1.0 μm is obtained in case of batch operation mode and during 8 to 16 h to ammonium perchlorate particle size 1.0 to 0.55 μm in case of stepwise charging of lecithin at 3 h intervals, and drying. When number of dead mills and working room of mixer are changed, breakage time is found with the aid of special formula.

EFFECT: enabled preparation of ultrafine ammonium perchlorate fraction with coating preventing agglomeration of particles and simultaneously improving properties of fuel mass and finished fuel.

2 cl, 1 dwg, 3 tbl