Modern Mining June 2019

PRODUCT News

New multipurpose drill rig launched by Sandvik

with a wide hole size range (from 38 to 64 mm) using R28, R32 and T35 MF-rods. With a new boom structure and a reliable HL300 rock drill, the new rig offers high productiv- ity and low operating costs in challenging environments. The Commando DC300Ri is extremely mobile and agile. It features four powerful tramming motors with a maximum tram- ming force of 43 kN in total. Rubber tyres and the ±10 degree oscillation contribute to excellent manoeuvrability. A completely new, reinforced boom structure with extended swing and reach results in 20 % larger coverage area (compared to earlier models) equalling 12 m 2 . The most advanced iTorque drilling control system available in its size class makes the DC300Ri top-of-the-line in drilling performance and ensures longer steel life, says Sandvik. The intelligent compressor control system and new Cat 3.6 74,4 kW Tier4F/Stage5 engine make for excellent fuel efficiency, add- ing up to more than 30 % improvement compared to earlier models in the same size class. The new rig follows the same unique modular design as other smaller Sandvik next generation surface drill rigs. This logical layout ensures high uptime with

easily accessible service points, on-board diagnostics and small transportation dimensions. Being only 2,85 m in height, it can be easily and quickly transported from site to site on a small truck or even a trailer. Wide hole range and application spe- cific on-board options make the DC300Ri a multipurpose drill rig. It suits various differ- ent civil construction works, such as road and railroad job sites, trenching, channel- ling and different foundation works. The extended reach and the optional hydraulic roll-over, which allows the feed to rotate 360 degrees, make the unit an ideal fit also for dimensional stone drilling and second- ary breaking. With smaller hole sizes, the Commando DC300Ri suits tunnelling applications per- fectly. The hydraulic roll-over is a necessity in bolting and grouting and the optional one rod adding system gives flexibility and safety. A special fast tramming option for tunnelling allows the drill rig to keep up with the other fast-moving machines underground. The DC300Ri can be further equipped with several intelligent options to suit spe- cific needs; these include auto-aligning, SanRemo remote monitoring and Remote Screen. Sandvik Mining, tel (+27 11) 929-5300 “With our Ecotails experience and com- plete systemoffering, FLSmidth can provide a complete materials handling solution,” Neluvhola says. This includes crushers, siz- ers and screens, KREBS® pumps, thickeners and filters, conveyor and stacking systems, conducting tests and studies, system engi- neering and automation systems. Neluvhola highlights that FLSmidth in South Africa collaborates with customers on in-depth testwork to ensure the appli- cation of Ecotails on their mines is fit for purpose. “We can conduct testing at laboratory scale, and then advance to pilot stage when a mini-plant can be operated on site,” he says. “This allows us to test the technology using the customer’s own mined material in the thickening, filtering, conveying and blending phases to inform our technical designs.” FLSmidth, website: www.flsmidth.com a greater danger of land contamination through leaching.

The Commando DC300Ri working in an underground application.

Sandvik Mining and Rock Technology has added a new surface top hammer drill rig to its offering. The versatile Commando™ DC300Ri is said to be ideal for drill and blast contractors as it suits multiple differ- ent construction applications. The new Commando DC300Ri is a modern fully radio remote-controlled, rubber-tyred, surface top hammer drill rig

Ecotails™ promises environmental bonanza for mines Combining filteredmine tailings with waste rock to form a GeoWaste is a breakthrough solution from FLSmidth that lowers water usage, rehabilitation costs and tailings footprints. therefore be reused in the plant,” he says. “This is a vast improvement on pump- ing highly diluted slurry to a conventional tailings dam, where the water is lost to evaporation.”

According to FLSmidth Regional Product Line Manager (Dewatering) Leonard Neluvhola, the Ecotails™ solution is nearing the end of a lengthy testing process by one of the world’s leading gold producers. “The success of its application to date confirms that Ecotails will be a game- changer for the mining sector,” says Neluvhola. “Not only can mines improve their environmental performance by apply- ing this system, they will also see bottom line benefits too.” He says the Ecotails solution involves dewatering and filtering tailings to a point where moisture content is just 10 % to 25 %. “Up to 90 % of the water in tailings can

The drier tailings are thenmixed with the mine’s waste rock, after it has been sized and screened to be transportable by conveyor. The resulting GeoWaste can be placed by a stacking system, as it is much more stable than wet tailings and can be stacked higher on a smaller footprint. This helps to address the serious concern mines have about the large footprints consumed by their tailings dams and waste rock dumps. In addition to its greater stability, GeoWaste is more conducive to vegetation growth. It is an ideal medium for concurrent environmental rehabilitation. The concur- rent approach is becoming more popular, as it can mitigate the costs and risks of mine closure. Wet tailings can also present

54  MODERN MINING  June 2019