Tag Archives: Stage V

Sandvik trialling Stage V engine technology at Boliden’s Tara mine

Sandvik is continuing its sustainability drive, announcing that it is trialling its first Stage V compliant underground truck at the Boliden-owned Tara zinc mine in Ireland.

The company, in December 2019, launched its first Stage V compliant underground LHDs for hard-rock mining applications following extensive testing. Back then, it said its newest intelligent loaders, the Sandvik LH517i and Sandvik LH621i, would receive the Stage V treatment in early 2020.

Now, Sandvik’s flagship truck, the TH663i, equipped with brand new Stage V Volvo Penta engine technology, is undergoing an extensive field trial period at Tara, allowing the company to obtain first-hand customer feedback on its technical and operational performance. Sandvik said this was “an integral part of Sandvik’s way of working and customer-focused mindset”.

The Stage V engine in the 63 t truck is expected to deliver lower emissions, contributing to reduced mine ventilation rates.

“Designed to fit seamlessly together with the truck and to perform specifically in underground use, the engine system includes built-in fire prevention solutions, increased wiring protection with shrink mesh wiring harness and electric hardware that is specifically designed for demanding conditions, with corrosion, heat and water resistance,” it said. “The new Stage V, requiring ultra-low sulphur fuel and low-ash engine oil to operate, will be an optional engine for the TH663i.”

To reduce particle emissions in the lower Stages/Tiers, standard engines on both the TH663i and TH551i trucks can be equipped with a diesel particulate filter (DPF), according to Sandvik. The company explained: “Based on studies conducted, the optional sintered metal DPF reduces particle mass by approximately 99%. From a reliability and maintenance viewpoint, the DPF is well protected but still designed for easy cleaning to reduce downtime and operating costs. The DPF is also available as retrofit kit.”

Pia Sundberg, Product Line Manager for Trucks at Sandvik Mining and Rock Technology, says thorough field tests are valuable to both the OEM and customer: “We want to allow enough time for sufficient testing of new technology, since it is of benefit to both sides.

“Possible hiccups that can often occur when developing something new are identified prior to the product being fully commercialised, which enables us to serve our customers better in the long run.

“Based on the feedback that we receive, we are still able to do some modifications if necessary and thereby make sure that the TH663i meets expectations when it is released to the market with the latest engine technology at a later stage. Of course, there is also some additional new technology on the test truck that we are testing at the same time.”

The TH663i also benefits from the recent improvements in Sandvik’s AutoMine® offering, as AutoMine for Trucks now enables autonomous truck haulage not only underground but also on the surface.

Sandvik said interesting glimpses into the company’s future truck offering have also been seen in Australia, where the Artisan Z50 battery truck from Sandvik carried out an extensive tour in early 2020 and gathered customer feedback for the new upcoming battery generation.

The company has also recently deployed a Z50 into Barrick Gold’s Turquoise Ridge underground gold mine, in Nevada.

Sandvik ups the drilling ante with DT1132i jumbo

Sandvik Mining and Rock Technology has launched a new underground jumbo that, it says, is purpose-designed for fast and accurate drilling in tunnelling and cavern excavation.

The Sandvik DT1132i jumbo is the latest addition to Sandvik’s already extensive range of underground drill rigs. Together with the new high frequency rock drill Sandvik RD535 and rock tools designed for high speed drilling, it provides users with a heavy duty solution for their underground drilling needs, according to the company.

“All Sandvik DTi tunnelling jumbos have been developed with a special modular design that makes them highly flexible and versatile,” Sandvik says. “Suitable for fast face drilling or mechanised long-hole drilling and bolting, they are proving be highly productive, reliable and effective across the world.”

These rigs also use the latest developments in automated drilling solutions such as the iSURE® tunnel management software and SICA intelligent control system.

The new machine is a three-boom, electro-hydraulic jumbo. The computer-controlled rig can use both operator-controlled boom positioning and full-face automatic drilling functions, and also incorporates some of Sandvik’s latest developments in digital solutions. It comes equipped with Sandvik’s new high frequency RD535 rock drill, robust booms and advanced drill string guides, “making it a complete and new high-speed drilling solution”, Sandvik says.

New features

The RD535 rock drill automated drilling features and new rock tools mean that that the DT1132i delivers the results required, but with 40% less exhaust particles, up to 20% higher penetration rate and with 25% more side coverage (3 x SB160i 190m2 -19,400m x 12,200m), Sandvik says.

The premise behind the development of the new DT1132i is to provide users with increased drilling performance and accuracy, thanks to its fast and adaptive drilling control capabilities, able to account for changing rock conditions. The rig design also maximises operator safety and ergonomics, with improved fleet standardisation (high parts commonality) enabling extended rig usage across different work sites.

Among the new features on the new rig is a 3 m telescopic TB160i boom, optimised with a front wrist structure that provides 1 m additional side coverage as standard, and 4 m side coverage with telescopic adjustment. The new boom also uses a new fully proportional boom control for accurate and fast manual boom handling, with intelligent compensation models to give accuracy in all operating conditions, according to Sandvik.

The rig also comes with an ergonomic vibration-dampened cabin, providing the operator with excellent all-round visibility, low noise level inside the cab – thanks to its acoustic windows – a filtration system to minimise dust inside the cab (according to standard EU6/7) and an open and spacious operator environment.

To further boost the efficiency of the rig and the operator, diagnostics information is integrated into one display. These include drilling diagnostics for boom instrumentation, drilling control system and shank lubrication, together with carrier diagnostics for electric motors, pumps (hydraulics and water), transmission system, diesel engines, brake system, jacks and cable reels.

Power and efficiency

The new RD535 rock drill has maximised power transfer capabilities leading to a high drilling speed without compromising hole quality, Sandvik says. It has an efficient and powerful patented percussion mechanism, as well as a tool-saving, efficient and patented stabiliser structure for increased reliability. These features, together with improved flushing and efficient cooling, provide uninterrupted high-speed drilling.

The DT1132i possesses a powerful transmission system with a Cummins B6.7, 168 kW diesel engine (Stage V) which can be operated up to 5,000 m above sea level without any modifications. The new engine provides up to a 90% reduction in NOx emissions (compared with stage III engines), with more than 90% mass reduction for diesel particulate monitoring. The rig uses a new carrier that has more efficient hydraulic and water systems – including separate circuits for both drilling and tramming hydraulics, proportional flushing valves to adjust the flushing flow and inlet/outlet pressure monitoring.

The rig steers by hydraulic rear wheel steering and its electric current reducer unit provides electric reactive power element from an on-board capacitor, reducing electric current draw by up to 20%. The 3 x 90 kW IE3 electric motors require 2.5% less energy, with all working lights based on LED technology, automatically controlled based on tramming direction and with directional lights available where needed, Sandvik says.

A new feed – TF535i – also provides increased feed force for high power drilling, while a saving hose reel structure gives longer service life for the hoses which are of an increased size.

Automated drilling

The DT1132i is available with some of the latest developments in automation, including a SICA control system for intelligent torque control/feed percussion, with monitoring and fleet management for My Sandvik. To further improve the excavation process, remote access via WLAN can be chosen to allow web-based data transfer as well as online measurement while drilling.

As ‘Gold’ standard, the DT1132i comes with torque based semi-automated drilling, manual boom control and rod handling, all enabling drilling to a predefined depth with feed angle measurement and drill bit location measurement. Drill plan visualisation and rig navigation are also included. In addition to these standard features, the rig is also available as part of the ‘Platinum’ package with automatic long hole drilling and fully automatic face drilling.

New drilling tools

For face drilling, the DT1132i comes with the new Sandvik Alpha 360 drilling system for the RD535 rock drill. This has features such as an optimised rod diameter with increased flushing hole size, increased flushing and higher penetration rates, as well as a new Sandvik Alpha 360 connection. The latter possesses a new larger bit thread for increased drilling power and straighter holes which gives higher advance rate per blast. For grouting, the GT38 system provides 50% less deviation and increased service life.