US 11,104,620 B1 · Bead milled spray dried nano-explosive

Abstract

A method for manufacturing nano-sized insensitive high explosive molding powder usable as a booster HE is provided herein. The method preferably involving the steps of dissolving a binder in a liquid and suspending crystalline high explosive to said liquid, grinding that suspension in a bead mill until the crystalline high explosive is nano-sized, and precipitating the binder and crystalline high explosive using a spray dryer to produce granules containing nano-sized crystalline high explosive. The liquid may be water or an organic solvent so long as the binder is highly soluble in the liquid and the crystalline high explosive is generally insoluble in the liquid. A fatty alcohol, water defoaming/dispersant/surfactant agent can be added to the dissolved binder/suspended crystalline high explosive, to aid in the manufacturability.

Claims7

Dependent claims

A method of manufacture of an insensitive high explosive molding powder comprising:

adding a binder, and a crystalline high explosive into a liquid to form a mixture prior to milling the mixture;
and
agitating the mixture such that the binder is generally dissolved in the liquid and the crystalline high explosive is generally, uniformly suspended in the liquid prior to milling the mixture;
milling the mixture in a bead mill until the crystalline high explosive has an average particle size of less than 1 μm;
and
spray drying the mixture containing the nano-sized crystalline high explosive material to produce powder granules wherein the granules comprise nano-sized crystalline high explosive material uniformly coated with the binder.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/591,173Filed 10 May 2017 · continuation in part

Priority

18 Mar 2014

Granted

31 Aug 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

C06B 45/22
The component base containing an organic explosive or an organic thermic component: the coating containing an organic compound
C06B 21/0066
Shaping the mixture: by granulation, e.g. flaking
C06B 21/0083
Apparatus or methods for working-up explosives, e.g. forming, cutting, drying: treatment of solid structures, e.g. for coating or impregnating…
C06B
Explosives or thermic compositions

Bead milled spray dried nano-explosive

Life of this patent

Bead milled spray dried nano-explosive

Life of this patent

Abstract

Claims7