Process and apparatus for producing ultrafine explosive particle

Details Process and apparatus for producing ultrafine explosive particle Process and apparatus for producing ultrafine explosive particle

1989-04-27

1992-10-20

Nelson, Peter A.

Plastic and nonmetallic article shaping or treating: processes

Explosive or propellant article shaping or treating

Extrusion to form sheet or rod

269 34, 422163, 149 21, 1491096, C06B 2100

Patent

active

051567792

ABSTRACT:
A method and an improved eductor apparatus for producing ultrafine explosive particles is disclosed. The explosive particles, which when incorporated into a binder system, have the ability to propagate in thin sheets, and have very low impact sensitivity and very high propagation sensitivity. A stream of a solution of the explosive dissolved in a solvent is thoroughly mixed with a stream of an inert nonsolvent by obtaining nonlaminar flow of the streams by applying pressure against the flow of the nonsolvent stream, to thereby diverge the stream as it contacts the explosive solution, and violently agitating the combined stream to rapidly precipitate the explosive particles from the solution in the form of generally spheroidal, ultrafine particles. The two streams are injected coaxially through continuous, concentric orifices of a nozzle into a mixing chamber. Preferably, the nonsolvent stream is injected centrally of the explosive solution stream. The explosive solution stream is injected downstream of and surrounds the nonsolvent solution stream for a substantial distance prior to being ejected into the mixing chamber.

REFERENCES:
patent: 4444606 (1984-04-01), Bertrand et al.
patent: 4685375 (1987-08-01), Ross et al.
patent: 4767577 (1988-08-01), Muller
patent: 4801413 (1989-01-01), Wagner et al.

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