Method of lowering the density of ammonium nitrate-based mining

Details Method of lowering the density of ammonium nitrate-based mining Method of lowering the density of ammonium nitrate-based mining

1994-08-08

1995-04-25

Walsh, Donald P.

Explosive and thermic compositions or charges

Structure or arrangement of component or product

149 60, 149 61, C06B 4500

Patent

active

054095565

ABSTRACT:
The density of ammonium nitrate-based mining explosives, such as ANFO, heavy ANFO and emulsion explosives, is lowered by adding an expanded grain, such as expanded popcorn, expanded rice, or expanded wheat, to the explosive. As much as 10% of the explosive composition may be an expanded grain. The present invention may be used with porous ammonium nitrate, dense agricultural grade ammonium nitrate, crystalline ammonium nitrate, and ground ammonium nitrate.

REFERENCES:
patent: 3730093 (1973-05-01), Cummings
patent: 4111727 (1978-09-01), Clay
patent: 4181546 (1980-01-01), Clay
patent: 4836870 (1989-06-01), Cunningham et al.

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