Ammonium nitrate density modification

Details Ammonium nitrate density modification Ammonium nitrate density modification

1992-04-30

1993-08-31

Walsh, Donald P.

Explosive and thermic compositions or charges

Containing inorganic nitrogen-oxygen salt

Ammonium nitrate

264 31, 264 35, 264 36, C06B 3128

Patent

active

052405249

ABSTRACT:
High density ammonium nitrate particles, e.g. prills are treated to reduce the density thereof by contact with a liquid medium which penetrates into the particles via pre-existing pathways, dissolves ammonium nitrate at the surfaces of the pathways and produces a gassing reaction by virtue of the presence of a chemical gassing agent or by a reaction with the ammonium nitrate whereby a portion of the ammonium nitrate particle is depleted by dissolution or gas losses during reaction, the gassing action facilitating venting of liquid from the particles and drying thereof to yield a particle of higher porosity.

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patent: 4698106 (1987-10-01), Sayles
patent: 4836268 (1989-06-01), Devendra
patent: 4960475 (1990-10-01), Cranney et al.
patent: 5078813 (1992-01-01), Tucker et al.

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