Gassed emulsion explosive

Details Gassed emulsion explosive Gassed emulsion explosive

C - Chemistry, Metallurgy

06

B

C06B 45/00 (2006.01) C06B 23/00 (2006.01) C06B 47/14 (2006.01)

Patent

CA 2259015

The invention comprises an emulsion explosive composition having an organic fuel as a continuous phase; an inorganic oxidizer salt solution or melt as a discontinuous phase; an emulsifier; and gas bubbles formed from a chemical gassing agent that comprises a nitrite salt and an ion selected from the group consisting of calcium ion, strontium ion and mixtures thereof as a gassing enhancer. The invention further comprises a method for chemically gassing an emulsion explosive composition. The method involves adding to a pre-formed emulsion phase a chemical gassing agent that comprises a nitrite salt and calcium or strontium ion and mixing the gassing agent uniformly throughout the emulsion phase to produce finely dispersed, sensitizing gas bubbles.

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