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US 11,919,831 B2Granted
Phase-stabilized ammonium nitrate prills and related products and methods
AssigneeDyno Nobel Asia Pacific Pty Limited
InventorsBrian Graham, Jeff Gore
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Abstract
Phase-stabilized ammonium nitrate (PSAN) prill including ammonium nitrate and a potassium salt are provided. The PSAN prill can be explosive grade and low density. The PSAN prill may include a porosity enhancing agent such as an interfacial surface modifier or a pore former. Methods of preparing the PSAN prill and related emulsions are also provided.
Claims13
A phase-stabilized ammonium nitrate (PSAN) prill comprising:
- ammonium nitrate;
- a porosity enhancing agent;
- and
- a potassium salt, wherein the PSAN prill comprises from 2.1 mole percent (mol %) to 5 mol % potassium ions of the potassium salt based on the ammonium ions of the ammonium nitrate, wherein the potassium salt comprises at least one of potassium hydroxide, potassium nitrate, potassium sulfate, potassium hydrogen sulfate, potassium carbonate, or potassium hydrogen carbonate;
- wherein the PSAN prill is explosive grade and has a bulk density less than 0.9 kg/L, and
- wherein upon thermal cycling the PSAN prill 20 times, wherein one cycle comprises four hours at 15° C. followed by four hours at 45° C., an average crush strength of the thermal cycled PSAN prill is greater than an average crush strength of non-thermal cycled control PSAN prill.
3 more elements
Dependencies are inferred from the claim text.