METHOD OF MAKING SPHERICAL POWDER FOR SMALL ARMS Russian patent published in 2014 - IPC C06B21/00 C06B25/18 

FIELD: weapons and ammunition.

SUBSTANCE: invention relates to production of spherical powders for small arms. Proposed method comprises flushing, sorting, water squeezing out and drying. Powder squeezing is performed at RoVac filter. The latter consists of eight spinning funnels with top and bottom screens 01 and 07 at their bottoms, respectively. Vibrators are arranged at sides of said funnels. Water-powder suspension with powder concentration of 25-30 wt % is fed to spinning funnels to be filled with powder for 2/3 of their volume. Graphite suspension is introduced therein to remove water at 8-12 kPa rarefaction to residual content of 18-22 wt %. Now, powder is discharged to screw feeder bin and transferred by air transport for drying.

EFFECT: production of spherical powders for small arms.

1 dwg, 1 tbl, 5 ex