Process for preparing prilled porous ammonium nitrate

Details Process for preparing prilled porous ammonium nitrate Process for preparing prilled porous ammonium nitrate

1974-09-25

1976-06-29

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

By extrusion spraying or gravity fall through orifice

149 46, 264DIG51, 264 14, B01J 204

Patent

active

039668533

ABSTRACT:
A prilled ammonium nitrate containing 2 to 5 percent by weight water obtained by prilling an aqueous solution of 93 to 98 percent by weight ammonium nitrate is dried by: lowering the drying temperature of the ammonium nitrate to a temperature less than the III--IV crystalline transition temperature of ammonium nitrate at least once when the water content of the prilled ammonium nitrate is 0.3 to 1.5 percent by weight in the drying step; further drying at a temperature higher than the III--IV transition temperature; and adding an anti-caking agent to the dried prilled ammonium nitrate. The dried, prilled ammonium nitrate obtained is useful as an ammonium nitrate fuel oil explosive.

REFERENCES:
patent: 2382298 (1945-08-01), Datin
patent: 2887724 (1959-05-01), Bettes, Jr.
patent: 3127249 (1964-03-01), Cuthbert

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