Engineering & Mining Journal

JUL 2019

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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58 E&MJ • JULY 2019 www.e-mj.com EQUIPMENT GALLERY Sandvik launched the DR416i Rotary Blasthole Drill, which delivers a sin- gle-pass capacity of 21 meters (m) or 69 ft, the longest single-pass mast in its class, the company reported. Constructed for large-diameter (406 mm or 16 in.) rotary drilling, the drill is automation-ready, scalable, and sup- plies the highest rotational torques and pulldown forces at the lowest possible operating cost, Sandvik reported. The company's Compressor Management System (CMS) comes standard and is designed to reduce fuel consumption and improve productivity. The rig features easy access walk- ways, four egress points, easy access to mast components, and non-rust fi - berglass reinforced grating. It offers dual-feed speeds, auto-setup and au- to-mast raise and lower, and a traveling centralizer for straighter holes. Leadership at Sandvik reported the drill was built to target customers' exact needs. "In developing the latest addi- tion to our iSeries family, we looked at our customers' greatest challenges in the large-diameter drill space and de- veloped a cost-effective, highly-effi cient solution to solve those challenges," said Dave Shellhammer, president, rotary drilling division, Sandvik Mining and Rock Technology. www.rocktechnology.sandvik Lighter Composite Mill Liners FLSmidth launched PulpMax Composite Mill Liners, pitched as high-performance SAG and ball mill liners. Customizable to fi t the specifi cations of any SAG or ball mill, the liners are constructed with a rubber-ceramic matrix, and reinforced with carefully selected high-hardness steel inserts, the company reported. The liners are described as being 50% lighter, making installation faster and saf- er, and allowing the plant to increase its ball charge level without increasing the total weight of the mill. The lighter weight means fewer bolts are required to hold the liners in place, and each liner can be larger so the mill can be lined with fewer of them, FLSmidth reported. With fewer parts, less is required to perform a reline, limiting scheduled downtime. The liners can be removed without torching. www.fl smidth.com Rugged, Low-emission Scaling Machines Gradall reported its mine scaling ma- chines deliver appropriate scaling power without wasting fuel and set new produc- tivity standards. On either rubber tires or a crawler undercarriage, the machines leverage an axle oscillation assembly to create a stable working platform without the need for outriggers, the company re- ported. The telescoping, triangular boom tilts 270° or 220°. Boom tilt capability al- lows the operator to accurately place the bucket or prying tool for productive mine scaling, Gradall reported. The two-section boom features high-pressure, load-sens- ing hydraulics. Hydraulic hoses located safely inside the boom and double-boom rollers, along with other features, enable the machine to withstand the rigors of mine scaling, the company reported. The boom telescopes out up to 52 ft, 3 in. Series V models are powered by a single Volvo Penta engine that meets Stage IV, Tier 4f emissions standards. www.gradall.com Spiral Removes Gangue in 2 Offtakes Multotec Gravity Division reported its new SX10 low-density spiral is capable of a reduced cut point of 1.55 g/cm 3 , which offers advantages over cut points between 1.6 and 1.8 g/cm 3 . One is cleaner coal with less waste, both achieved in a single stage. Another is reduced capital costs because no further spiral stages are re- quired, the company reported. The solution can reportedly remove gangue from the trough in two offtakes. The fi rst offtake removes ash. That opens the available separation surface of the spiral for offtake two, allowing the re- maining material to separate easily. The two offtakes remove most of the gangue, leaving middlings and cleaner coal products to be collected at the dart splitters. Drill With Longest Single-pass Mast

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