Delivery of emulsion explosive compositions through an...

Details Delivery of emulsion explosive compositions through an... Delivery of emulsion explosive compositions through an...

F - Mech Eng,Light,Heat,Weapons

17

D

F17D 1/14 (2006.01) F42D 1/10 (2006.01)

Patent

CA 2332292

The present invention relates to a system and method for delivering emulsion explosive compositions into a borehole by means of an oversized diaphragm pump, which provides a relatively constant flow rate for the pumped emulsion composition thereby minimizing flow pulsations during delivery. More specifically, the system and method comprise an oversized diaphragm pump of significantly higher capacity than the intended flow rate of the emulsion composition, in combination with a water injection system that provides a lubricating annular stream of pressurized water between the pumped emulsion composition and the inner surface of a delivery hose for delivering the composition into a borehole. By minimizing flow pulsations, a safe, simple and easy to handle system and method for the delivery of emulsion compositions into boreholes are provided. Moreover, the diaphragm pump operates at a relatively low pressure which also enhances safety.

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