METHOD FOR PRODUCTION OF SPHERICAL POWDER FOR 5,6 MM SPORT HUNTING CARTRIDGE OF CIRCULAR IGNITION Russian patent published in 2012 - IPC C06B25/22 C06B21/00 

FIELD: blasting.

SUBSTANCE: method for production of spherical powders (SPHP) for a 5.6 mm sport hunting cartridge of circular ignition comprises SPHP moderation with apparent density of 0.660-0.790 kg/dm³, manufactured from a fine-grained pyroxilic non-moderated powder with content of nitrogen oxide in the amount of 209-210.5 ml NO/g in nitrocellulose. The powder is mixed with 3.0-3.5 wt parts of water per 1 wt part of particles and heated to 94-98°C for 30-40 minutes. Moderation is carried out with dibutyl phthalate in the amount of 1.5-3.5 wt %, dinitrotoluene in the amount of 0.5-1.0 wt % and a protective colloid - a leather glue in the amount of 0.1-0.2 wt % relative to powder weight, which are introduced in process of mixing in the form of 1.5-3.5% water emulsion.

EFFECT: invention provides for required ballistite properties of a spherical powder designed for equipping a 5,6 mm sport hunting cartridge of circular ignition.

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