Chemical foaming of emulsion explosive compositions

Details Chemical foaming of emulsion explosive compositions Chemical foaming of emulsion explosive compositions

C - Chemistry, Metallurgy

06

B

52/50

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

Patent

CA 1319015

Z/N 34614 ABSTRACT Chemical Foaming of Emulsion Explosive Compositions This invention provides an improved method of foaming a water -in-oil emulsion explosive wherein a gassing agent which is a water-in-oil emulsion containing an aqueous solution of sodium nitrite in its discontinuous phase is mixed with the emulsion explosive.The sodium nitrite reacts with ammonium nitrate in the discontinuous phase of the emulsion explosive to generate small particles of gas which are distributed throughout the explosive.The method improves the gas bubble distribution and enhances the sensitivity of the explosive to blasting cap initiation.

589830

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