METHOD FOR PRODUCTION OF SPHERICAL POWDER Russian patent published in 2010 - IPC C06B21/00 C06B25/18 

FIELD: explosives.

SUBSTANCE: method for production of spherical powder includes preparation of powder varnish in process of cellulose nitrates and ethyl acetate mixing in aqueous medium, addition of emulsifier, dispersion of varnish into spherical particles, introduction of thickener and sodium sulfate, mixing for 10-15 minutes, heating up to temperature of 75°C, distillation of 15% ethyl acetate, addition of sodium sulfate and distillation of residual amount of ethyl acetate, washing, fractionating, graphitising and drying. As cellulose nitrates, pyroxylin is used, or its mixture with return technological wastes, and as emulsifier - hide glue, as thickener - polyacrylamide or sodium salt of carboxymethylcellulose.

EFFECT: production of dense powder.

1 ex, 1 tbl