Back to results
US 5,395,559 AGranted
Granulated ammonium nitrate products
AssigneesImperial Chemical Industries PLC, ICI Canada Inc.
InventorsAida Kaldas, Raymond Oliver
Life of this patent
Estimating the term…
Abstract
A process for the production of explosives grade ammonium nitrate prill (EGAN) comprises the steps of (A). producing seed ammonium nitrate prill as substantially monosized prills; and then (B). fattening using melt/solution of ammonium or mixed nitrates, with drying and thermal treatments, the seed prill in an inclined rotating jacketed pan granulator or a cascade of such pans to produce a final fattened EGAN prill product preferably having at most about 4 mm diameter.
Claims7
A process for the production of explosives grade ammonium nitrate prill (EGAN), which process comprises
- (A) producing seed ammonium nitrate prill, (i.e. porous, oil-absorbent less dense explosive grade prill or dense, low absorbency fertilizer grade prill), as substantially monosized prills;
- and then
- (B) fattening, with drying and thermal treatments, the seed prill in an inclined rotating jacketed pan granulator or a cascade of such pans to produce a final fattened EGAN prill product preferably having at most about 4 mm diameter.
Dependencies are inferred from the claim text.