초록 ▼

A blasting composition of reduced volume strength relative to straight ammonium nitrate/fuel oil (ANFO) compositions, containing particulate oxidizer salt, particulate inert and/or density reducing filler and optionally a fuel for modifying the oxygen balance. The composition contains a viscous wate

A blasting composition of reduced volume strength relative to straight ammonium nitrate/fuel oil (ANFO) compositions, containing particulate oxidizer salt, particulate inert and/or density reducing filler and optionally a fuel for modifying the oxygen balance. The composition contains a viscous water-in-oil type emulsion, having a continuous fuel phase and a discontinuous aqueous phase of oxidizing salts, in an amount sufficient for improving adherence between the particulate oxidizer salt and the particulate filler, but insufficient for filling out the interstices between the particulate oxidizer salt and the particulate filler.

대표청구항 ▼

A blasting composition of reduced volume strength relative to straight ammonium nitrate/fuel oil (ANFO) compositions, containing particulate oxidizer salt, energy reducing particulate inert and/or density reducing filler and optionally a fuel for modifying the oxygen balance, comprising; (a) the par

A blasting composition of reduced volume strength relative to straight ammonium nitrate/fuel oil (ANFO) compositions, containing particulate oxidizer salt, energy reducing particulate inert and/or density reducing filler and optionally a fuel for modifying the oxygen balance, comprising; (a) the particulate oxidizing salt; (b) the energy reducing inert and/or density reducing filler in an amount adapted to give the composition a volume strength relative to standard ANFO between 5 and 80%, the standard ANFO consisting of prilled ammonium nitrate with 5.5 percent by weight of fuel oil and tamped to a charge density of 0.95 g/cc; and (c) a viscous water-in-oil type emulsion, having a continuous fuel phase and a discontinuous aqueous phase of oxidizing salts, in an amount between 2 and 25% by volume of the total composition bulk volume; wherein the weight ratio between the emulsion and the particulate oxidizer salt is between 10:90 and 60:40.