The new RC kit for DM and DML drill rigs has been designed to meet demands for increased flexibility, enabling these drills to be used for in-pit grade control as well as blasthole drilling.
Based on proven systems, components, and technology, the optional RC kit includes a cyclone arm for sampling from the ground or platform level, which can be vertically raised or lowered. A cyclone rotation of 160 degrees provides safe access for cleaning, maintenance, and attaching new sample hoses from ground level.
The cyclone is a heavy duty system featuring a hydraulic upper knife valve and pneumatic lower knife valve for collecting and isolating the sample. It has a hydraulic hinge between the dump box and the cone splitter that allows for easy cleaning and a fixed cone splitter with primary and duplicate sample chutes. All cyclone and sample functions are easily controlled from the operator’s cab.
A 66 liter dump box, with a steep cone for limiting sample hang up is part of the sample collection feature, and the primary and duplicate ports can easily be adjusted from 4–15%. Other components include a blast box/discharge, a blow-down valve that offers internal valving (does not require external 3–way valving or hosing above or around the rotation head), an overhead dual swivel, and a fully integrated sample hose management system.
DM45 and DML reverse circulation drill rigs offer hole diameters ranging from 114 mm to 146 mm (4½–5¾”) and have carousels for four 4.5 inch drill pipes, giving maximum hole depths of 44 m (145 ft).
The kit can also be retrofitted on rigs currently in the field.
Epiroc operated under the trademark “Atlas Copco” prior to January 1, 2018.