Method and apparatus to prepare a tribasic propellat charge powder
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United States of America Patent
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Nov 30, 1993
Grant Date -
N/A
app pub date -
Jan 7, 1991
filing date -
May 11, 1989
priority date (Note) -
Expired
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Abstract
The invention relates to a method of and an apparatus for producing tribasic propellant charge powders. An operationally safe and continuous course of the production process is obtained according to the invention by first preparing a fully gelatinized dibasic intermediate product of nitrocellulose and a blasting or explosive oil, without solvent, in a shearing mill (1). The intermediate product is granulated and supplied to an extruder (4) into which the third crystalline energy carrier and solvents are introduced. There the pulverous mixture is homogenized and extruded to form powder strands which are moist with solvent.
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