METHOD OF PHLEGMATIZATION OF BLASTING POWDER Russian patent published in 2005 - IPC

FIELD: production of blasting powder.

SUBSTANCE: the invention is dealt with the field of production of blasting powder. The invention offers a method of phlegmatization of blasting powder, in particular, fine-grained pyroxylin blasting powder, spherical blasting powder, obsolete fine-grained pyroxylin blasting powder or obsolete spherical blasting powder. The method of phlegmatization of blasting powder provides for a treatment of the blasting powder by a phlegmatizator in a water medium. For that purpose a reactor is filled up with water, then they load blasting powder, heat up and exercise a one-shot introduction of a phlegmatizating agent made in the form of a water emulsion. In the capacity of the phlegmatizating agent is used dibutyl phthalate or a mix of diphenylamine and dinitrotoluene, or a mix of centralite №1 and dinitrotoluene, or a mix of centralite №2 and dibutyl phthalate. The invention allows to utilize the obsolete blasting powders, to increase safety of process of phlegmatization of the blasting powders, to reduce durations of the process of phlegmatization of the blasting powders, to improve ballistic performances of produced blasting powders.

EFFECT: the invention allows to increase safety, to reduce durations of the process of phlegmatization of the blasting powders and to upgrade ballistic performances of produced blasting powders.

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