Process for the production of propellant charge powders, especia

Details Process for the production of propellant charge powders, especia Process for the production of propellant charge powders, especia

1975-12-29

1977-09-27

Lechert, Jr., Stephen J.

Plastic and nonmetallic article shaping or treating: processes

Explosive or propellant article shaping or treating

Rolling to form sheet or rod

149 96, 149 97, 149 98, 149100, C06B 2100

Patent

active

040512070

ABSTRACT:
A process for producing propellant charge powders from solvent-containing mixtures such as nitroguanidine powders containing nitrocellulose and/ or nitrocellulose and diglycol dinitrate or nitroglycerin and nitroguanidine and additives wherein an alcohol-containing mixture or optionally a water-containing mixture of said propellant charge powders is premixed with additional components of the propellant powder, the mixture is first dried, if necessary, and the solvent is incorporated therein and the solvent-containing premix is homogenized and preplasticized in a kneading device or the water-containing premix is homogenized and preplasticized in the kneading device and then the resultant mixture is dewatered by drying and then combined with a solvent; then the solvent-containing mixture is plasticized in an extruder and converted thereby into granular form and the resulting granular material is extruded into a final product form in a screw-type extruder. Subsequently, the solvent is evaporated therefrom.

REFERENCES:
patent: 3928514 (1975-12-01), Brachert et al.

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