Process and apparatus for producing ultrafine explosive particles
US5156779A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 27, 1989 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Apr 27, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F23/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.