Patent ID: 6401588
Filing Date: 2002-06-11
Classification: F42D

Abstract:
An underground or surface delivery system for delivering an emulsion explosive composition into a borehole comprising:(a) a bin for holding an emulsion composition and having an outlet, (b) an oversized diaphragm pump having a capacity of at least about 3 times greater than the intended flow rate of the delivered emulsion composition, and being connected to the bin outlet and to a power source, for pumping the emulsion composition from the bin and through an outlet from the pump at a relatively constant flow rate thereby minimizing flow pulsations, (c) a water injector connected to the pump outlet for forming an annular stream of water around the emulsion composition, (d) a source of pressurized water for providing water to the water injector, and (e) a delivery hose extending from the water injector for delivering the emulsion composition into a borehole.