Engineering & Mining Journal

NOV 2018

Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr

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74 E&MJ • NOVEMBER 2018 EQUIPMENT GALLERY Caterpillar released the Cat MD6200 Ro- tary Blasthole Drill, which is a production rig that does pre-split drilling. The com- pany described the rig as its most trans- portable rotary drill yet. The rig is designed for single- or multi- pass rotary or DTH drilling and can drill 127-mm to 200-mm-diameter holes. It can drill at a negative angle up to 15° to match the highwall slope. For tradition- al production drilling, the mast tilts from vertical to 30°. The cab operator can ad- just the mast angle in increments of 5° with a touch screen. The MD6200 can be transported over the road with the mast on. It offers best-in- class maneuverability, Caterpillar reported. A customizable Cat C18 engine pow- ers the drill. It is available in U.S. Envi- ronmental Protection Agency (EPA) Tier 4 Final confi guration and in U.S. EPA Tier 2 equivalent confi guration. The cab offers ergonomic controls, the company reported. Optional upgrades include a heated, ventilated seat with heavy-duty suspension and dual-pane glass. Multifunction joystick controls and touch- screens are intuitive to use, Caterpillar re- ported, and three cameras offer improved operator situational awareness capabilities. Separately, Caterpillar reported the Cat Tricone Drill Bits are both cost effec- tive and designed for the most severe rotary blasthole ap- plications. The new bit line includes six diameters ranging from 171 mm to 311 mm. Their carbide shapes and cutting face arrange- ments are optimized for high wear resis- tance and improved rock fragmentation, Caterpillar reported. The bits' cutting structure delivers a superior rate of penetration and contrib- utes to the longevity of the bits. Cater- pillar's heat treatment technology and air-cooled bearing design yields longer bit working life and results in lower overall drilling costs, the company reported. The gauge row design improves re- sistance to diameter shrinkage. The bits have demonstrated signifi cantly lower to- tal cost of drilling in head-to-head tests conducted in copper, iron ore and coal mines, the company reported. Customized Raise Boring Machine Passes Tests TERRATEC announced the completion of factory acceptance testing on a custom TR3000 Raise Boring Machine. The unit has a nominal boring size of 3 meters (m) in diameter and 400 m in depth and has a standard pilot hole diameter of 311 mm, the company report- ed. It has a maximum pilot drilling torque of 78,000 newton meters (Nm), reaming torque of up to 237,000 Nm and breakout to 266,000 Nm. The maximum down thrust force is 1,600 kilonewtons (kN) with up thrust be- ing 4,500 kN. The total installed power on the machine is 360 kW. The unit also has a modular design, the company reported, which makes disassembly of the major components (for inspection, transport or repair) very easy to achieve. Custom features include an upgraded proprietary gearbox design, which allows for some fl ex- ibility in alignment when raise boring and adding drill pipe, and powered wrenching at the drive-head and work-table to make adding and removing drill strings a safer operation, the company reported. Upgraded Sorting Machine Offers Increased Capacity TOMRA Sorting Solutions launched an upgrade to the TOMRA COM XRT, which features higher belt speed and design ca- pacity, and better accessibility over the previous version, the company reported. Key improvements of the upgraded de- sign include increased wear resistance and component lifetime, with increased mean time between failure. The mechanical platform of the TOM- RA COM XRT 2.0 was redesigned for safer, simpler, quicker and more ergo- nomic maintenance, by providing easier access to all relevant components, the company reported. The belt speed was upped from 2.7 to 3.5 m per second; and the upgrade Transportable Cat Rig for Production or Pre-split Drilling

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