Method for loading slurry explosives in blast holes or...

F - Mech Eng,Light,Heat,Weapons – 42 – D

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F42D 1/10 (2006.01) C06B 21/00 (2006.01) C06B 23/00 (2006.01) C06B 45/00 (2006.01) C06B 47/14 (2006.01) F42B 33/02 (2006.01)

Patent

CA 2302737

A method for loading and sensitising a slurry explosive in a borehole or in a cartridge, where a gassing agent is added as a thin string inside the slurry explosive after the explosive has been pumped into a loading pipe, and wherein the slurry explosive and a gassing agent are mixed at the end of the loading pipe and sensitised in the borehole or the cartridge. Optionally the loading pipe is lubricated with water or a water solution to reduce the pump pressure.

L'invention porte sur un procédé de chargement et de sensibilisation des explosifs en bouillie dans un trou de mine ou une cartouche. Un agent de dégagement gazeux est ajouté sous forme d'un fin cordon à l'intérieur de l'explosif en bouillie après le pompage de celui-ci dans un tuyau de chargement. L'explosif en bouillie et l'agent de dégagement gazeux sont mélangés à l'extrémité du tuyau de chargement et sensibilisés dans le trou de forage ou la cartouche. Le tuyau de chargement est éventuellement lubrifié avec de l'eau ou une solution aqueuse de façon à réduire la pression de pompage.

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