Method for the manufacture of composite explosives
AssigneeNobel Kemi AB
InventorsSigurd Back, Jan-Olof Nyqvist
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Abstract
The disclosure relates to a method for producing composite explosives of the type hexotonal and octonal by the intermediary of a two-stage wet granulation process comprising a first granulation stage for producing primary granules of a certain amount of TNT (the primary TNT) suspended in water, together with other desired components in the explosive, with the exception of the aluminum powder, which, in its turn, is mixed into the remaining amount of secondary TNT in order thereafter, in a secondary granulation stage, to be added to the mixing water with the primary granules suspended therein, for a successive build-up of their surface layer.
Claims19
A two-stage wet granulation method for producing a composite explosive whose major components are hexogen or octogen, and trinitrotoluene, aluminum powder, and phlegmatization wax wherein said aluminum powder is in the form of pure, untreated powder which comprises suspending in water a first wet granulation stage, said hexogen or octogen, and said phlegmatization wax;
- adding thereto a primary portion of said trinitrotoluene in the molten state or under such temperature conditions that said trinitrotoluene melts, the amount of said primary portion of said trinitrotoluene is such as to give homogeneous and uniformly-sized granules with the ingredients suspended in water;
- cooling said primary portion of said trinitrotoluene to thereby form primary granules with the other components suspended in water;
- mixing said aluminum powder in the form of pure, untreated powder into the remaining secondary portion of said trinitrotoluene in the molten state to form a homogeneous mixture;
- and
- adding said homogeneous mixture in a second wet granulation stage to the granules suspended in the water to thereby form secondary granules.
Dependencies are inferred from the claim text.