Method and arrangement for reducing dust-related problems in...

Details Method and arrangement for reducing dust-related problems in... Method and arrangement for reducing dust-related problems in...

E - Fixed Constructions

21

B

E21B 21/07 (2006.01)

Patent

CA 2399086

The invention relates to a method and arrangement for reducing dust-related problems in rock drilling. Air and liquid mist is supplied into a drilling hole to moisten the dust that comes off the drilling hole. The air and moistened dust exiting from the drilling hole are led to a dust separator, dust portions that collect into the dust separator being removed therefrom at suitable intervals. When dust is to be removed from the dust separator s filter, liquid is supplied to the portion below the filter in a mist-like form or as small droplets in connection with the dust removal to moisten the dust which then falls out of the lower end of the dust separator.

L'invention concerne un procédé et un arrangement permettant de réduire les difficultés liées à la production de poussière en forage de roches. On injecte de l'air et une pulvérisation liquide dans un trou de forage pour humidifier la poussière sortant du trou de forage. L'air et la poussière humidifiée sortant du trou sont dirigés vers un séparateur de poussière, et la poussière recueillie dans le séparateur est extraite à des intervalles appropriés. Pour extraire la poussière du filtre de ce séparateur, on injecte le liquide dans la partie située sous le filtre, en pulvérisation ou en fines gouttelettes, parallèlement à l'extraction de poussière, ce qui permet d'humidifier la poussière, laquelle ressort ensuite à l'extrémité inférieure du séparateur de poussière.

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