Process and mechanism for in situ sensitization of aqueous...

Details Process and mechanism for in situ sensitization of aqueous... Process and mechanism for in situ sensitization of aqueous...

C - Chemistry, Metallurgy

06

B

C06B 21/00 (2006.01) C06B 23/00 (2006.01) C06B 47/00 (2006.01) B01F 3/08 (2006.01)

Patent

CA 2294893

The process for sensitizing in situ aqueous explosives before charging the mine holes comprises the formation of an emulsion or dispersion gas-in-liquid from a low sensitivity or non explosive matrix product which consists of a liquid mixture in solution, emulsion or suspension of oxidant in fuel, and a gas. The density of the final explosive product can be varied as a function of the gas flow rate and can be controlled before introducing it into the hole. The installation comprises a tank with the matrix product, a gas reserve, a mixture, a pump and a gas flow rate regulating device and optionally a tank with a gas bubble stabilizing agent, a dosing pu:mp and a flow meter.

L'invention concerne un procédé pour sensibiliser in situ des explosifs de base aqueuse avant de charger les trous de mine. Ce procédé consiste à former un gaz émulsifiant ou dispersant à partir d'un produit matriciel non explosif ou de faible sensibilité. Ce produit comprend un mélange liquide en solution, émulsion ou suspension d'oxydants et de combustibles et un gaz. La densité du produit explosif final peut varier en fonction du débit du gaz et doit être contrôlée avant son introduction dans le trou de mine. Ce système comprend un réservoir (1) renfermant le produit matriciel, une réserve de gaz (10), un mélangeur (5), une pompe (3) et un dispositif de régulation du débit de gaz (8) et, éventuellement, un réservoir (2) avec un stabilisant des bulles de gaz, ainsi qu'une pompe doseuse (4) et un débitmètre (7).

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