Atlas Copco has expanded its blasthole product range with the introduction of the reverse circulation (RC) kit for the DM45/50 mid-range blasthole drill.
The RC kit comes with an in-pit grade control to keep up with the expanding mining market.
A number of other components are available with the optional kit, which can also be retrofitted on drills currently in use.
The cyclone arm has a vertical raise and lowering function, enabling sampling from the ground or platform level.
The cyclone rotates 160 degrees, allowing for safe access for cleaning, maintenance, and attaching new sample hoses from ground level.
The cyclone features include a hydraulic upper knife valve and pneumatic lower knife valve for collecting and isolating the sample, a hydraulic hinge between the dump box and cone splitter for easy cleaning, and a fixed cone splitter with primary and duplicate sample chutes.
All cyclone and sample functions can be controlled from the operator’s cab.
The sample collection has a 66-litre dump box, with a steep cone for limiting sample hang up. The primary and duplicate ports can be adjusted from four to 15 per cent.
The Reverse Circulation Carousel has four 11cm rod cups and offers a 44 metre maximum on-board capacity.
The RC drills offer hole diameters ranging between 114mm and 146 mm.
The RC kit also has a blast box/discharge and a blow-down valve with internal valving that does not need any external three-way valving or unnecessary hosing above or around the rotation head.
It also has an above head dual swivel which means a below head swivel is not needed.
It comes with a fully integrated sample hose management system for safety and practicality.