Modern Quarrying Q4 2018

“For the Leopard DI650i, we also offer a new heavy-duty option, the MRH6, which is designed to perform in tough environments and for drilling larger hole sizes. It is a perfect fit for Sandvik’s new RH560-series DTH hammers,” explains Cooke. Simon Andrews, vice president, Sales Area Southern Africa, Sandvik Mining and Rock Technology, says the new drill is a result of Sandvik’s market research, and closes the gap in the OEM’s current offering. According to Ilkka Lahdelma, director, Product Management, Surface Drilling & Exploration and Sandvik Mining and Rock Technology, pipe sizes for the new Leopard DI650i range from 89 to 140 mm, depending on the size of the hammer. The maximum hole depth is 53,6 m when using the carousel option with pipe sizes from 89 to 114 mm. “The capacity range of the 403 kW Tier 3 CAT C15 diesel engine and the reliable compressor is adequate for high-pressure drilling with 4-6,5 inch DTH hammer sizes,” says Lahdelma. Key features With good visibility to the drilling area and a single integrated touch screen for all monitoring, diagnos- tics and mining automation displays, the Leopard DI650i’s ergonomic iCAB cabin provides the rig operator with a safer, productive working environment. With both safety and uptime in mind, the maintenance crew can carry out all daily servicing tasks at ground level on both sides of the machine. “The advanced serviceability and reliability features can increase the Leopard DI650i’s availability by up to 20% compared with conventional DTH rigs at a similar technology level,” explains Lahdelma. Intelligent control technology applied in both the compressor and the hydraulic system’s cooler fan can reduce fuel consumption by up to 15% compared with conventional DTH rigs. The Leopard DI650i’s fuel efficiency is further boosted by the flow-controlled drilling control system which eliminates fluctuations in airflow, allowing the pressure level to fluctuate in response to more difficult ground conditions and increased back pressure (for example, due to groundwater or collapsing holes).

The newly-launched Sandvik Leopard DI650i DTH comes with a range of new or re- designed components to boost productivity.

Technical data Recommended hole diameter

115-203 mm

Drill rod / tube diameter

89, 102, 114, 127 and 140 mm 4, 5 and 6 in. (Sandvik RH460 & RH560) HTRH6, MRH6 (heavy duty option)

DTH-hammer

Rotary head Engine type

Caterpillar C15

Engine output power Production capacity

403 kW /1800 rpm (Tier 3)

2,1 Mt/a, one shift

Transport length Transport width Transport height

12,4 m

3 m

3,5 m

Approximate weight

25 100 kg

new or re-designed components to boost productivity. The standard rotary head option, the HTRH6, has a proven track record on current Sandvik DTH rigs.

rock conditions. Joanne Cooke, President of Surface Drilling and Exploration at Sandvik Mining and Rock Technology, says the new drill comes with a range of

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QUARTER 4 - 2018 MODERN QUARRYING