Energetic materials processing technique

Details Energetic materials processing technique Energetic materials processing technique

1994-11-08

1996-10-15

Nelson, Peter A.

Plastic and nonmetallic article shaping or treating: processes

Explosive or propellant article shaping or treating

Extrusion to form sheet or rod

C06B 2100

Patent

active

055651500

ABSTRACT:
Energetic materials are continuously processed in a twin-screw extruder to provide safe, low-cost, high quality manufacturing of pyrotechnic compositions, gun propellants, and high explosives. The energetic materials are processed by first lacquering the binder and other soluble ingredients in a solvent. The lacquer solution is introduced into a twin-screw extruder. At least one solid reactive material ingredient, such as metal and/or oxidizer particles, is also introduced into the twin-screw extruder. The solid reactive material ingredient and the lacquer solution are mixed within the twin-screw extruder. After mixing, sufficient solvent is removed by heating or by vacuum to permit bulk granulation of the energetic material. Moist energetic material is then granulated using a remote continuous rotary granulator. The energetic material is dried to produce free-flowing granules which may be used as feedstock for further processing.

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