Sandvik adds reverse circulation sampling capability to Leopard™ DI650i drill rig

Sandvik Mining and Rock Solutions is introducing a new reverse circulation (RC) sampling option for its Leopard™ DI650i down-the-hole (DTH) drill rig. The new RC drilling system offers a reliable and accurate method for ore body identification and grade control in opencast mining.

Fully integrated into the Leopard™ DI650i platform, the RC drilling system maximizes drill rig utilization and increases productivity. The possibility to drill inclined holes with a boom-type drill rig, such as Leopard™ DI650i, provides an easy and accurate ore body identification method and enables the use of RC face sampling for grade control in opencast mines. An isolated sample route from the bit face to the cone splitter unit ensures no contamination and makes the Leopard™ DI650i RC drilling system reliable, productive and extremely accurate.

The Leopard™ DI650i RC drilling system is equipped with an industry-proven Metzke RC sampling unit, optimally integrated onto the rig. The drill pipe setup is either 102-millimeter (4-inch) or 114 millimeter (4 ½-inch) RC pipes.

Optimized for reverse circulation drilling

The MRH6-RC heavy duty rotary head of Leopard™ DI650i is designed to be compatible with Metzke RC components. The longer feed beam and robust boom give maximum support for drilling inclined holes with heavy RC tooling. In addition, a hose reel optimizes the routing of the sample hose and a new breakout table enables bigger hole sizes and easier maintenance.

For operational efficiency and added safety, the RC system works seamlessly with full-cycle one-hole drilling automatics, and the iCab cabin provides excellent visibility for RC drilling. The Metzke cone splitter unit can be lowered and maintenance can be performed from the ground level, thanks to the horizontal service position.

To manage the added weight of the reverse circulation system and to increase safety, Leopard™ DI650i RC comes with iBalance and iFold options as a standard. iBalance monitors the carrier and boom angles for safer tramming, while iFold automatically folds the feed to tramming position for optimum balance.

If Leopard™ DI650i is equipped with the TIM3D drill navigation system and Driller's Notes measurement-while-drilling (MWD) option, the operator can easily add the sample bag number with comments at a specific location and depth to a graphical user interface inside the cabin for later analysis at the office.

Easy adaptation to DTH production drilling

If RC drilling is not needed, a quick and easy reconfiguration to perform the normal DTH drilling production cycle is a significant benefit of the Leopard™ DI650i RC drilling system. This maximizes utilization of the equipment and offers a significantly faster and more cost-effective way to identify orebodies than traditional methods.

Leopard™ DI650i with the RC drilling system is also easily mobilized for relocation, offering a valuable asset for streamlining mine operations.

Tampere, Finland, September 6, 2021

For more information, please contact
Jari Läntinen
Product Manager
Sandvik Mining and Rock Solutions
tel. +358 40 545 7626

Sandvik Group
Sandvik is a high-tech and global engineering group offering products and services that enhance customer productivity, profitability and safety. We hold world-leading positions in selected areas – tools and tooling systems for metal cutting; equipment and tools, service and technical solutions for the mining industry and rock excavation within the construction industry; products in advanced stainless steels and special alloys as well as products for industrial heating. In 2020 the Group had approximately 37,000 employees and revenues of about 86 billion SEK in more than 160 countries within continuing operations.

Sandvik Mining and Rock Solutions
Sandvik Mining and Rock Solutions is a business area within the Sandvik Group and a global leading supplier of equipment and tools, parts, service and digital solutions and sustainability-driving technologies for the mining and construction industries. Application areas include rock drilling, rock cutting, loading and hauling, tunneling and quarrying. In 2020, sales were approximately 33.6 billion SEK with about 12,500 employees within continuing operations.