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Upgrades & Engineered solutions

Air mist flushing for underground drills

The Air Mist Flushing use mainly compressed air for flushing but with the injection of a small quantity of water to avoid generation of dust that could be harmful for the mine personal and generate high cost of ventilation.

Description

Flushing is needed on a drill rig for removing the cutting generated by the drill bits. A proper removal of cuttings is one key parameter for maximized drilling performance, rock drill reliability and optimized rock tool life.

The standard media used for flushing holes on Underground drills is water. But sometime, rock condition do not allow the use of water flushing (hole collapse after being drilled, avoiding to charge it with explosive). Also, In some locations, water can also be a rare and expansive resource that cannot be wasted.

To solve this issue, Sandvik has developed Air Mist Flushing system for Underground Drills.

The Air Mist Flushing use mainly compressed air for flushing but with the injection of a small quantity of water to avoid generation of dust that could be harmful for the mine personal and generate high cost of ventilation.

The pressurized water is conveyed through a special jet that sprays it into the air from inside a special Y connection. This connection is located as close as possible from the rock drill / rotary drill flushing head in order for the sprayed water not to settled down in the line.

Depending on unit model supply of air can be done internally (with replacing the original compressor by a bigger one or addition of a second compressor, or addition of air receiver(s)).

Also in few models, a water tank and OA cooler can be installed to have on-board (internal) water supply.

OFFERING
The Air Mist Flushing Upgrade Solution is available for the following UG Drills models*:

*Possibilities of implementing different configurations of the Air Mist Flushing can vary according machine specifications and options. Please contact your local Sandvik Representative for more information.
Advantages

-Drilling with mainly compressed air and only a small quantity of water.
-Drilling with minimum quantity of water.
Customer values

-Allows to drill almost all rocks specifications (the hole do not collapse after drilling.
-Improve safety by avoiding dust generation (compare to dry air drilling).
-Allows to drill where water is a rare and/or expensive resource.

Product specifications

Application area: Application modification
Underground drill rigs & Bolters: Sandvik DD530 / Sandvik DD531 / Sandvik DD421 / Sandvik DL432i / Sandvik DL431 / Sandvik DL331 / Sandvik DL421 / Sandvik DL411 / Sandvik DL321 / Sandvik DL422iE / Sandvik DS311 / Sandvik DS421 / Sandvik DS310 / Sandvik DS420 / Sandvik DS511 / Sandvik DS422i / Sandvik DS510 / Sandvik DS411 / Sandvik DL210 / Sandvik DS2711 / Sandvik DS410 / Sandvik DS211L-M / Sandvik DD311 / Sandvik DS211L-V / Sandvik DS210L-V / Sandvik DS312 / Sandvik DS210L-M / Sandvik DL430 / Sandvik DL420 / Sandvik DD422iE / Sandvik DD422i / Sandvik DD420 / Sandvik DL410 / Sandvik DL330 / Sandvik DL230L / Sandvik DL311 / Sandvik DD211L-V / Sandvik DD320 / Sandvik DD321 / Sandvik DD410 / Sandvik DD411 / Sandvik DD310 / Sandvik DD210L / Sandvik DD211L / Sandvik DD220L / Sandvik DL2711 / Sandvik DL2721 / Sandvik DL310 / Sandvik DL320 / Sandvik DD210 / Sandvik DD212 / Sandvik DD2711 / Sandvik DD210L-V