On-demand lead azide production

Chemistry of inorganic compounds – Nitrogen or compound thereof – Binary compound

Reexamination Certificate

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Reexamination Certificate

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07407638

ABSTRACT:
The present invention discloses a process for the on-demand production of small quantities of lead azide. First, a metered quantity of sodium azide solution and a metered quantity of a solution of a lead salt sufficient to react with the sodium azide are introduced into a T-mixer or Y-mixer. Then, the sodium azide and lead salt solutions are conveyed into a static mixer and the azide and lead compounds are permitted to react together, forming insoluble crystals of lead azide as a slurry in an aqueous medium. The lead azide crystals are then separated from the aqueous medium. The process is carried out within an explosion-proof chamber.

REFERENCES:
patent: 1959731 (1934-05-01), Meissner
patent: 3095268 (1963-06-01), Lindner et al.
patent: 4954329 (1990-09-01), Klossner et al.
patent: 2006/0183956 (2006-08-01), Heaton
Yin et al; “Numerical computation of blast wave parameters of initial explosive in steel blast-preventing container”, Proceedings of the International Pyrotechnics Seminar (1998), 24th, 613-619. (Abstract only), no month.

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