METHOD FOR OBTAINING LARGE-DISPERSED SPHERICAL POWDER Russian patent published in 2018 - IPC C06B25/18 C06B21/00 

FIELD: weapon.

SUBSTANCE: invention relates to the production of spherical gunpowder for small arms and small caliber artillery. Large-dispersed spherical powder is obtained by preparing a powder varnish, by dispersing it into spherical particles, and then removing the solvent therefrom. Initially, during 60-90 minutes in a mixer, a powder varnish consisting of 70.0-84.0% by weight of 1 Pl pyroxylin is prepared, 15.0-28.8% by weight of the propellant, 1.0-1.2% by weight of the chemical stability stabilizer and solvent-ethyl acetate with the module of 1.5-2.5 (volume) to charge all components. Then the powder varnish is injected with excess pressure into the granulator, where it is cut into the strictly prescribed dimensions of the powder element. Further, the powder elements enter the reactor, where the particles are spherically shaped in the presence of 3-4 wt.% of water with the content of 0.6-1.3% by weight of a protective colloid (leather glue) and 0.6-1.3% by weight of sodium sulfate for 60-90 minutes, after which a volatile solvent is removed from the propellant particles.

EFFECT: method ensures the production of spherical particles with the diameter of up to 4 mm with a high yield of the product.

1 cl, 1 tbl, 5 ex