초록 ▼

A multicomponent explosive composition and its use as a blasting agent in ditching operations and the like. The explosive comprises a fuel component and an oxidizer compnent, both of which are retained in the liquid state over wide temperature ranges and are stable over long storage intervals. The f

A multicomponent explosive composition and its use as a blasting agent in ditching operations and the like. The explosive comprises a fuel component and an oxidizer compnent, both of which are retained in the liquid state over wide temperature ranges and are stable over long storage intervals. The fuel component comprises a suspension of a particulate metal fuel, specifically aluminum, in a carrier liquid formed of a mixture of a water-miscible polyhydric alcohol and a pyrrolidone solvent. The carrier liquid contains a thickening agent to provide thixotropic rheological properties such that the particulate metal fuel remains in suspension at rest, but with shear forces induced by pumping, the components become more fluid for mixing and pumping easily. The oxidizer component comprises an aqueous solution of an inorganic oxidizer salt. The oxidizer solution contains void-containing materials such as glass or saran microbubbles. The void-containing materials may be suspended in the fuel component also. The fuel and oxidizer components are stored in separate reservoirs and transported to the location of the detonation site. The components are separately metered from their respective reservoirs and supplied to a static mixing zone where they are mixed together.

대표청구항 ▼

In a method for the formulation of an explosive composition, the steps comprising: (a) providing a fuel component of said explosive composition comprising a suspension of a particulate metal fuel in a carrier liquid formed of a mixture of a water miscible polyhydric alcohol and a pyrrolidone solvent

In a method for the formulation of an explosive composition, the steps comprising: (a) providing a fuel component of said explosive composition comprising a suspension of a particulate metal fuel in a carrier liquid formed of a mixture of a water miscible polyhydric alcohol and a pyrrolidone solvent and containing an amount of thixotropic thickening agent effective to provide a viscosity of said fuel component of at least 2000 centipoises at 20°C. and a shear rate of 20 rpm and no more than 100,000 centipoises at -20°C. and a shear rate of 10 rpm; (b) providing an oxidizer component comprising an aqueous solution of an inorganic oxidizer salt; and (c) mixing said fuel component and said oxidizer component to provide a liquid explosive composition.