C - Chemistry – Metallurgy – 06 – B
Patent
C - Chemistry, Metallurgy
06
B
C06B 47/00 (2006.01) C06B 23/00 (2006.01) C06B 47/14 (2006.01)
Patent
CA 2276375
A method of sensitizing and of forming an emulsion explosive composition comprises forming a fuel phase comprising an organic liquid fuel, an emulsifier and unexpended organic microspheres with such fuel phase being at a temperature below the expansion temperature of the organic microspheres; forming an inorganic oxidizer salt solution at an elevated temperature above the expansion temperature of the organic microspheres; and mixing together the fuel phase and the oxidizer solution with sufficient shear to form a water-in-oil emulsion and to allow the elevated temperature of the oxidizer solution to expand the organic microspheres and thereby lower the density and increase the sensitivity of the emulsion explosive composition. Other methods comprise adding unexpended organic microspheres to a portion or component of the emulsion explosive composition that is at or heated to a temperature above the expansion temperature of the microspheres, allowing the microspheres to expand in this mixture and then combining this mixture with the remaining components to form the emulsion explosive composition.
Atkinson Kerry S.
Halander John B.
Borden Ladner Gervais Llp
Dyno Nobel Inc.
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