Method of preventing afterblast sulfide dust explosions

Details Method of preventing afterblast sulfide dust explosions Method of preventing afterblast sulfide dust explosions

1997-07-24

1999-05-25

Nelson, Peter A.

Ammunition and explosives

Powder form

Having embedded reinforcing or burning control means

102313, 149 49, 149 60, 149 83, 299 13, C06D 506, F42B 300, C06B 3128

Patent

active

059071192

ABSTRACT:
The invention comprises a method of preventing afterblast sulfide dust explosions in blasting operations involving sulfide-containing ores, which method comprises (a) loading a borehole that has been drilled into a sulfide-containing ore body with an emulsion blasting agent that comprises an emulsifier, a continuous organic fuel phase, a density control agent, and a discontinuous oxidizer salt solution phase that comprises inorganic oxidizer salt(s), water and urea as a chemical inhibitor in an amount of from about 1% to about 10% by weight of the blasting agent, the blasting agent being loaded in a coupling relationship with the borehole; and (b) detonating the blasting agent.

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