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Title: Process and apparatus for producing ultrafine explosive particles

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.

Inventors:
 [1]
  1. Martinsburg, WV
Publication Date:
Research Org.:
E I DUPONT DE NEMOURS & CO INC
OSTI Identifier:
868505
Patent Number(s):
US 5156779
Application Number:
07/345,360
Assignee:
E. I. Du Pont de Nemours and Company (Wilmington, DE)
DOE Contract Number:  
AC04-87AL42544
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; apparatus; producing; ultrafine; explosive; particles; method; improved; eductor; disclosed; incorporated; binder; ability; propagate; sheets; impact; sensitivity; propagation; stream; solution; dissolved; solvent; thoroughly; mixed; inert; nonsolvent; obtaining; nonlaminar; flow; streams; applying; pressure; diverge; contacts; violently; agitating; combined; rapidly; precipitate; form; spheroidal; injected; coaxially; continuous; concentric; orifices; nozzle; mixing; chamber; preferably; centrally; downstream; surrounds; substantial; distance; prior; ejected; ultrafine particles; fine particles; mixing chamber; applying pressure; laminar flow; solvent solution; fine particle; explosive particles; solvent stream; ultrafine particle; ultrafine explosive; thoroughly mix; producing ultrafine; /264/149/422/

Citation Formats

McGowan, Michael J. Process and apparatus for producing ultrafine explosive particles. United States: N. p., 1992. Web.
McGowan, Michael J. Process and apparatus for producing ultrafine explosive particles. United States.
McGowan, Michael J. Tue . "Process and apparatus for producing ultrafine explosive particles". United States. https://www.osti.gov/servlets/purl/868505.
@article{osti_868505,
title = {Process and apparatus for producing ultrafine explosive particles},
author = {McGowan, Michael J},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {10}
}

Patent:

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