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US 6,641,622 B2Granted
Process for preparing phase-stabilized ammonium nitrate
AssigneeTRW Inc.
InventorsWilliam P. Sampson, Peter J. Astrauskas
Life of this patent
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Abstract
A process for preparing phase stabilized ammonium nitrate comprises the following steps. A solution of ammonium nitrate (12), a phase stabilizer (26), and an inert liquid (20) is prepared. The solution is atomized to form a stream of droplets. The droplets (54) are freeze dried to form phase stabilized ammonium nitrate.
Claims21
A process for preparing phase stabilized ammonium nitrate comprising the steps of:
- preparing a solution of ammonium nitrate, a phase stabilizer, and an inert liquid;
- atomizing the solution to form a stream of droplets;
- and
- freeze drying the droplets to form phase stabilized ammonium nitrate.
1 more element
A process for preparing phase stabilized ammonium nitrate comprising the steps of:
- preparing an aqueous solution of ammonium nitrate and potassium nitrate;
- atomizing the aqueous solution to form a stream of droplets;
- cooling the stream of droplets to a temperature below the freezing point of the solution, and
- sublimating the frozen droplets to remove the water from the frozen droplets and form the phase stabilized ammonium nitrate.
1 more element
Dependencies are inferred from the claim text.