METHOD OF PRODUCING SPHERICAL POWDER Russian patent published in 2014 - IPC C06B21/00 

FIELD: process engineering.

SUBSTANCE: invention relates to production of spherical powders for small arms. Proposed method consists in production of powder varnish in reactor, dispersing into spherical particles, dewatering and distillation of ethyl acetate from spherical powder followed by its flushing, sorting and drying. Note here spherical powder with graphite is fed via settling cyclone into drying chamber with blow-out surface. Powder drying is conducted under boiling conditions at air pressure in drying chamber created by screens arranged at chamber bottom. Heat carrier is fed to chamber bottom part for 60-80 minutes at 88-98°C, then 140-180 minutes at 65-75°C and for 20-30 minutes at 50-60°C. Dried powder is discharged into intake bin and forced by air for dry sorting.

EFFECT: spherical powder moisture content complying with preset powder characteristics.

1 dwg, 1 tbl, 5 ex