METHOD TO MANUFACTURE PYROTECHNICAL CHARGES Russian patent published in 2013 - IPC C06B33/00 C06D5/06 

FIELD: blasting.

SUBSTANCE: method to manufacture a pyrotechnical charge includes mixing of sodium azide and ferric oxide powders, subsequent preparation of a technological moist mixture by addition of water, formation of granules, from which water is removed before pressing of charges, at the same time mixing of powder components in a blade mixer is combined with formation of granules from the moist technological mixture, which is carried out stepwise: at first water in the amount of 6-10 wt % relative to the mixture of dry powder components is added for 5-15 minutes, then moist mixture is mixed for 20-30 minutes with compressed air blowdown to form granules, which are dried in a vacuum chamber until moisture content is not more than 0.3 wt %.

EFFECT: method provides for manufacturability of elastoplastic material manufacturing and formation of granules with specified physical and mechanical parameters, suitable for pressing of pyrotechnical charges for generation of pure gaseous nitrogen with maximum yield.

1 cl, 2 tbl