Tag Archives: AutoConnect

Rio Tinto backs BEV use at Kennecott Underground with growing Sandvik fleet

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Rio Tinto is progressing its mobile equipment electrification move at the Kennecott underground operation near Salt Lake City, Utah, having transitioned from using Sandvik Mining & Rock Solutions battery-electric loaders and trucks in a proof of concept to commercially deploying Sandvik battery-electric TH550B trucks and a Sandvik LH518iB loader.

Just last year, Rio Tinto approved $498 million of funding to deliver underground development and infrastructure for an area known as the North Rim Skarn (NRS). Production from the NRS is due to commence this year and is expected to ramp up over two years, to deliver around 70,000 tonnes of additional mined copper over the next 10 years alongside open-pit operations at Kennecott.

This followed a September 2022 announcement where Rio Tinto approved development capital totalling $55 million to start underground mining in an area known as the Lower Commercial Skarn (LCS) at Kennecott. Underground mining within LCS started in February 2023 and is expected to deliver a total of around 30,000 tonnes of additional mined copper through the period to 2028.

These two investments will support Kennecott in building a world-class underground mine which will leverage battery-electric vehicle (BEV) technology, following a trial with Sandvik equipment in 2022 involving an LH518B loader and Z50 truck.

The first LH518iB loader in North America has just been delivered to site, with the automation-capable vehicle equipped with Sandvik’s patented self-swapping battery system, including the AutoSwap and AutoConnect functions, to minimise infrastructure needs and enable the loader to return to operation significantly sooner than ‘fast-charge’ mining BEVs, Sandvik claims.

Since launching the vehicle in March 2023, Sandvik has confirmed orders or made deliveries of the LH518iB to operations owned by LKAB, Boliden,Torex Gold, Foran Mining, Rana Gruber and Byrnecut.

Rio Tinto will complement these machines with a fleet of Sandvik TH550Bs, some of which are already operating on site. This 50-t payload truck combine Sandvik’s 50 years of experience in developing loaders and trucks with Artisan™’s innovative electric drivelines and battery packs. The electric drivetrain delivers 560 kW of power and 6,000 Nm of total torque output, allowing for higher ramp speeds for shorter cycle times and an efficient ore moving process, according to the OEM. All of this comes with zero emissions.

They also come with AutoSwap and AutoConnect functions that Sandvik has refined for battery swap processes that take only a few minutes.

Rio Tinto has previously stated on battery-electric vehicle use: “BEVs create a safer and healthier workplace for employees underground, increase the productivity of the mine and reduce emissions from operations.”

Boliden Garpenberg receives Sandvik’s first automation-ready battery-electric Toro LH518iB LHD

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Boliden’s Garpenberg zinc operation in Sweden has taken delivery of Sandvik’s first Toro™ LH518iB with AutoMine® as part of a 12-month collaborative trial of the new automation-ready 18-tonne battery-electric loader.

Considered one of the most modern mining operations, Garpenberg is the world’s most productive underground zinc mine and Sweden’s oldest mining area still in operation. The mine is now set to become the first in Europe to trial a Sandvik battery-electric loader, the OEM says.

The Toro LH518iB will support Boliden’s efforts to improve sustainability by reducing greenhouse gas emissions underground. The company’s climate targets include a 40% reduction of absolute CO2 emissions in Scope 1 and 2 and 30% reduction of Scope 3 emissions by 2030.

Jenny Gotthardsson, Garpenberg’s General Manager, said: “We are proud to be recipients of the very first Toro LH518iB with AutoMine. The unit has already undergone extensive factory testing in Finland and we look forward to really putting it through its paces now in our operation. We’re on a journey to reduce fossil fuel usage and CO2 emissions and increase productivity, and we are happy to work towards these goals with long-time partner Sandvik.”

The Toro LH518iB marries battery-electric and automation technologies. Building on the predecessor Sandvik LH518B, the Toro LH518iB features several design updates and significantly improved field serviceability. The latest version of Sandvik’s intelligent control system enables AutoMine readiness, and AutoMine compatibility will be available for Garpenberg’s Toro LH518iB in the March quarter of 2024.

The Toro LH518iB has dimensions equivalent to the 14-t size class, enabling it to fit in a 4.5-by-4.5-m tunnel. Its ground-up design, powerful electric motors and innovative electric driveline result in a compact size with higher payload capacity and increased visibility, Sandvik says.

Sandvik’s patented self-swapping battery system, including the AutoSwap and AutoConnect functions, minimises infrastructure needs and enables the loader to return to operation significantly sooner than ‘fast-charge’ mining BEVs, the company claims. The battery swap is performed by the loader itself, controlled by the operator in the cabin, without need for overhead cranes or forklifts.

Johanna Øygard, Territory Manager for North East Europe at Sandvik Mining and Rock Solutions, said: “We’re excited to see the productivity and sustainability benefits Garpenberg will gain from Toro LH518iB with AutoMine as we monitor the loader’s performance and production metrics over the next 12 months.”

In Mexico, Torex Gold is set to receive 11 Toro LH518iB battery-electric loaders as part of a 35-unit-strong hybrid fleet for its Media Luna project.

Eldorado Gold to electrify haulage at Lamaque with Sandvik TH550B BEVs

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Eldorado Gold is looking to take its next mobile equipment electrification step, with the company set to receive its first battery-electric truck in June for use at the Lamaque underground mine in Quebec, Canada.

The Vancouver-headquartered company has already trialled a battery-electric Normet SmartDrive concrete transportation vehicle at its Efemçukuru gold mine, in Türkiye, as part of a wider group remit to mitigate greenhouse gas emissions (GHG) by 30%, from 2020 levels, by 2030 on a ‘business as usual’ basis; equal to approximately 65,000 t of carbon dioxide equivalent.

Now the company is moving from this electric utility vehicle trial to acquiring two battery-electric trucks for use at its flagship Canadian mine.

In its recent 2023 guidance, Eldorado said it expected to spend $37-42 million on growth capital at Lamaque this year, including non-sustaining exploration expenditures for resource conversion and resource expansion drilling at the Ormaque and Parallel deposits, tailings management and electric underground trucks.

A spokesperson for the company confirmed the electric underground truck investment relates to the acquisition of two Sandvik TH550B battery-electric trucks.

These 50-t payload battery-powered trucks combine Sandvik’s 50 years of experience in developing loaders and trucks with Artisan™’s innovative electric drivelines and battery packs. The electric drivetrain delivers 560 kW of power and 6,000 Nm of total torque output, allowing for higher ramp speeds for shorter cycle times and an efficient ore moving process, according to the OEM. All of this comes with zero emissions.

These vehicles also come with fast and easy battery AutoSwap and AutoConnect functions that Sandvik has refined for battery swap processes that take only a few minutes.

The Eldorado spokesperson said: “We have purchased two units; the delivery for the first unit is in June and the second one in November 2023. The Lamaque Mine continues to perform as one of the lowest GHG-emitting gold mines in the world because of access to low-emission hydroelectricity in Québec and other site-based energy efficiency projects. Electrification of these underground vehicles has the benefit of reducing diesel usage on our site and, in addition, we can also be certain that we’re not passing on our direct Scope 1 emissions to Scope 2.”

The company’s sustainable focus at Lamaque goes beyond the acquisition of these two Sandvik vehicles.

Lamaque is expected to produce some 170,000-180,000 oz of gold at C1 cash operating costs of $670-$770/oz sold in 2023, the company says

Eldorado has recently eliminated 26 km of surface haulage and rehandling on public roads at Lamaque, reducing GHG emissions. It has also increased the operation’s energy efficiency, cut its ambient noise and reduced surface dust.

Lamaque is expected to produce some 170,000-180,000 oz of gold at C1 cash operating costs of $670-$770/oz sold in 2023, the company says.

Sandvik outlines its emission-free mining journey at The Electric Mine 2022

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Sandvik Mining and Rock Solutions President, Henrik Ager, got The Electric Mine 2022 Conference in Stockholm, Sweden, off to a bang earlier this month, with a major product reveal that will set a new benchmark in the battery-electric underground mining space.

After reflecting on a journey that saw him escape a broken lift on his way to the Radisson Waterfront that morning, Ager announced the company would soon release the largest-capacity battery-electric truck for underground mining to the market, the TH665B.

With a 65-t-payload capacity, this machine will be measured against the largest underground diesel-powered underground trucks for productivity, speed and cost. Interest is expected from major contractors and miners alike, with one of the bigger markets being the Australian underground hard-rock segment.

The prototype TH665B is currently completing factory testing, but it turned heads in Stockholm, with conference attendees witnessing a video of the machine in action on the company’s test track in California, USA.

Blending proven Sandvik design and advanced technology built around electric drivelines and battery systems, the TH665B will get its first mine site runout at AngloGold Ashanti’s Sunrise Dam gold mine in Western Australia. This trial is expected to prove its viability in a long ramp haulage application before commercial truck production commences in late 2023.

The Sandvik TH665B comes with an electric drivetrain that delivers 640 kW of continuous power, which equates to 858 horsepower

While displaying said video, Ager said the vehicle could haul a 65-t load up a 14.3% grade at 11.5 km/h. This, he said, was 30% faster than Sandvik’s 63-t diesel truck, the Toro TH663i, with which the TH665B shares a state-of-the-art cabin. An electric drivetrain that delivers 640 kW of continuous power, which equates to 858 horsepower, and significant torque, is behind such numbers.

Following the introduction of the Sandvik TH550B 50-tonne battery-electric vehicle at MINExpo INTERNATIONAL® 2021, last September, this latest vehicle launch shows, once again, how the company is betting big on its battery- and hybrid-electric loaders tackling the challenge of operating underground mines today and tomorrow.

Ager at the event outlined the three main drivers for the electrification move, namely: worker health, mine economics and sustainability. Sandvik’s battery-electric solutions, he said, hit all three criteria, providing safer, more productive and sustainable ways of moving the tonnes the industry needs to keep up with global commodity demand.

The primary driver for electrification came from ventilation and refrigeration constraints, followed closely by environmental, health and safety concerns over diesel exhaust emissions. At the same time, Ager said there was significant room for operating costs to fall with the adoption of battery-electric equipment given 40% of total mine operating costs were related to energy and ventilation, and electricity use was often cheaper than transporting and using diesel fuel underground.

Around the same time as MINExpo, Ager outlined that electric mining equipment could account for more than half of the company’s equipment sales in underground mining by 2030. In Stockholm, he added some colour to that statement.

The company’s generation three battery-electric vehicles have clocked up more than 500,000 operational hours with its Artisan™ battery packs and electric drivelines, with 22 active BEV units. This experience makes Sandvik an industry frontrunner, Ager said.

The machines out in the field include the 4-t-payload and 10-t-payload Artisan A4 and A10 LHDs, the Z40/Z50 (40 t/50 t payloads) haul trucks, the Toro™ LH514BE – an AutoMine®-compatible cable-electric loader, boosted with battery technology – plus the 18-t-payload battery-electric Sandvik LH518B LHD and 50-t-payload battery-electric TH550B truck.
This year will see the company officially release the LH514BE, which will be followed in 2023 by the TH665B and – judging from the preliminary nomenclature – a 15 t battery-electric and AutoMine-compatible LHD.

Three other battery-electric and AutoMine-compatible units are in the preliminary stages of development, scheduled for release in 2024-2025.

This comes on top of plans to electrify its full i-Series drilling line by 2030, drill rigs which tram on battery and plug into the grid while drilling/bolting.

Launches for the DD422iE-DC (development drill) and DS422iE (rock bolter) are expected in 2022, with the DL432iE (longhole drill) and the DT923iE (jumbo drill) coming to market between 2023 and 2026.

Since the rollout of the first battery-electric drill in 2016 – the DD422iE – 2.8 million metres had been drilled and 12,500 km had been trammed with these electric machines, Ager acknowledged.

It is not just product releases that are on the Sandvik roadmap, with Ager stating plans to develop different drivelines (battery-electric, hybrids, cable, battery-cable), quantify the value and beat the economics of conventional drivelines, expand into other applications such as narrow vein and narrow reef mines, and continue to develop 100% electrified, energy efficient mechanical cutting for soft- and hard-rock applications.

He also said the company would look to address the capital expenditure gap with diesel machines, aiming for cost parity from a total cost of operations perspective.

The company, at the same time, is planning to further its global capabilities to serve the electrified fleet throughout its entire life cycle, while building out battery optimisation expertise and developing global application knowledge to support customers in designing, planning and executing electric transition strategies.

Real equipment for the real world

This might look like a long ‘to-do’ list, but Ager’s colleague, Brian Huff, VP of Technology and Product Line for the BHEV business unit with Sandvik Mining and Rock Solutions, was able to outline several real-world wins from machine deployments later at the conference that showed how far the company has already come in addressing industry pain points.

Huff, a co-founder of Artisan Vehicle Systems, relayed some observations from field trials of the company’s LH518B and Z50 battery-electric vehicles, summing them up in series of snappy statements such as: “everything will be serviced, whether it was intended to be or not”; “battery cells are consumable, but the driveline is not”; “damage is expected, resilience and serviceability are required”; “isolation fault monitoring is more than shock hazard prevention”; “availability improves with each ‘opportunity’”; and – one of the more important ones – “operators prefer BEVs”.

“They take a beating and keep on working and, despite what people may think, these batteries are not fragile,” Brian Huff told delegates at The Electric Mine 2022 Conference earlier this month

Delving into specifics, Huff said real-world trials had proven the opinion that electric drivelines came with dramatically longer life and less maintenance. He also acknowledged batteries had become the new ‘consumable’ in this equation.

“Maintenance requires parts, but comes with very low labour,” he said, explaining that battery modules can be replaced underground and then rebuilt at the factory with new cells, making rebuilds both quick and painless. At the same time, refreshing the battery brought opportunities to use improved cells as they are developed – a reflection on the accelerated winds of change in the battery market.

Battling early market perceptions, Huff said these machines were far from “experimental”, having been used and proven to work at many hard-rock mines. “They take a beating and keep on working and, despite what people may think, these batteries are not fragile,” he said.

One of the new solutions to have come out from these real-world trials is the introduction of a new battery cage design that aids serviceability, Huff said. Coming with removable side covers, an improved locking system and structural design, this battery cage incorporates the company’s AutoConnect function, which, when combined with AutoSwap, facilitates quick battery swapping without the operator having to leave the cabin. The new cage would be available on the TH665B as well as other models, Huff said.

He then put some names and numbers behind earlier statements, highlighting a trial of a Z50 truck at Pretivm’s Brucejack gold mine in British Columbia, Canada, that saw more than 90% machine availability, exhibited speeds of 9.5 km/h on a 15% grade with a 42-t load, and observed battery swap times of less than 10 minutes. This added up to a 42% increase in tonnes hauled compared with a diesel-equivalent machine and a 22% boost in speed.

The trial at New Gold’s New Afton gold mine, also in British Columbia, saw a 56% mucking cycle time beat over a diesel-powered-equivalent, a plus-70% ramp speed improvement (on a 17% ramp), and decreases of 80% and 90% in energy use and heat generated, respectively.

Referring to another LH518B trial where the machine only clocked in a 74.9% availability, Huff was quick to highlight that all the problems/failures that caused the reduction in availability were correctible.

And, channelling his engineering DNA and the leading role Sandvik is willing to take in the industry’s pursuit of the zero emission, electrified mine, he reflected on all these real-world trials with: “a failure isn’t a failure, it is an opportunity to improve.”

Boliden Garpenberg set for first Sandvik LH518B BEV trial in Europe

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Boliden’s Garpenberg zinc operation in Sweden will become the first mine in Europe to trial the battery-electric Sandvik LH518B LHD, the OEM has confirmed.

Sandvik Mining and Rock Solutions and Boliden have agreed on a 12-month collaborative trial period for the new 18-t battery-electric loader.

Garpenberg is considered the world’s most productive underground zinc mine and Sweden’s oldest mining area still in operation. As a purely battery-powered loader, the Sandvik LH518B will support Boliden’s efforts to improve sustainability by reducing greenhouse gas emissions underground. The trial is planned to start in late 2022.

The Sandvik LH518B is easy to implement in most underground operations, as it does not require any major changes to mine infrastructure, Sandvik said. The loader’s Sandvik AutoSwap and AutoConnect features facilitate seamless installation of a fresh battery in less than six minutes, enabling it to return to operation sooner than ‘fast-charge’ mining BEVs. The battery swap is performed by the loader itself, controlled by the operator in the cabin, without need for overhead cranes or forklifts.

As a third-generation BEV, the Sandvik LH518B has been designed from the ground up entirely around its battery system and electric driveline to fully leverage on the battery system possibilities.

Garpenberg joins a host of other mines across the globe trialling this battery-electric LHD. There are two trials set to take place in Australia – at Kirkland Lake Gold’s Fosterville mine and Gold Fields’ Hamlet North mine – plus units at New Gold’s New Afton in Canada, Kennecott Utah Copper’s underground development project at Bingham Canyon and Gold Fields’ South Deep operation in South Africa.

Tackling the big mine electrification questions

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“There is consensus in the industry that once we start doing electrification, we will innovate much more in other areas of the mining space.”

If anyone in the mining sector thought electrification was not in their wheelhouse, Theo Yameogo’s words might make them think again.

Yameogo, Partner and National Mining & Metals Co-Leader at EY Canada, made such a statement during The Electric Mine Virtual Conference earlier this week. The event, organised by International Mining Events, brought leaders in the electrification space together to discuss the latest developments in the industry, of which there were many.

The stage was set for mine electrification reveals, and Henrik Ager, President of Sandvik Mining and Rock Technology (soon to be Sandvik Mining and Rock Solutions), did not disappoint, acknowledging that the company is currently working on development of what would be its largest underground truck: a battery-powered 65 t vehicle.

This was all part of the company’s aim to have a “full range electrified offering by 2022”, he said.

Azizi Tucker, Co-Founder and CTO of XING Mobility, was next up, providing an overview of the Taiwan-based company’s offering in his presentation: ‘Electrification from prototype to mass production’.

With a remit to provide commercial, industrial and specialty vehicle makers with modular, high power and safe battery and powertrain technologies, XING is making an entrance into the mining space at just the right time.

Tucker talked attendees through the elements that make the company’s IMMERSIO™ battery solutions ideal for the mining sector: “With the modular size and shape of our batteries, we can really suit any vehicles. We find this very popular with the original equipment manufacturers (OEMs) as they can utilise their existing chassis.”

The elimination of corrosion, ability to operate consistently in high-temperature environments, a variety of sealing techniques and the use of nickel-manganese-cobalt lithium-ion chemistry has allowed the company to provide the safe and enclosed battery solution miners are looking for.

He concluded by saying XING was in conversation with a variety of mining companies, mining OEMs and mine site operators about deploying solutions in the space.

Attendees were then treated to a demonstration of Tembo 4×4 e-LV’s Electric Cruiser via video during the session: ‘Green conversions: the Tembo 4×4 e-LV electric light utility vehicle platform’ (pictured below). They got up close and personal with the battery-electric utility vehicle as it travelled on- and off-road close to the company’s Netherlands HQ.

After a 15-minute demo showing off the Electric Cruiser’s attributes, Paul Smeters, Tembo 4×4 e-LV’s Marketing Manager, and Alexander Haccou, Tembo 4×4 e-LV’s Technical Director, joined the event to answer audience questions.

The inevitable query came up early during the live Q&A: have you tested this vehicle in an underground mine?

Haccou was prepared for this, explaining that Boliden’s Tara underground zinc-lead mine in Ireland was the first recipient of the company’s Electric Cruiser, and a unit had been operating there for a few years now observing many of the maintenance benefits battery-electric machines are becoming renowned for.

The Electric Cruiser has also been tested in Australia and Canada with the help of Tembo 4×4 e-LV partners in those regions, he added.

“We don’t use fast charging or battery swapping,” Haccou said in response to another question. “What we have seen in several mines is the daily amount of usage is less than the battery’s full capacity.”

After several questions related to an active thermal management system for batteries had come up in previous sessions, Nicolas Champagne’s entrance to the virtual event proved timely.

His presentation, ‘Battery thermal management system using a highly advanced dielectric fluid’, homed in on the use of a dielectric fluid with specific features to allow direct cooling of the battery electrochemical cells.

Champagne, Formulation Team Manager of the R&D department for TOTAL Lubricants, revealed results from use of the fluid in bench tests and simulations at the battery pack level, extrapolating what these results could mean for battery-powered vehicles in the mining sector.

He said the company is in discussions with at least one mining customer about deploying its fluid on a battery-powered vehicle.

After previous sessions had discussed the potential for fast charging and battery swapping, Champagne made clear that TOTAL Lubricants’ solution would prove beneficial in all battery-powered applications throughout the mining sector.

 

Following a lunch break, it was the turn of Epiroc’s Anders Hedqvist (Vice President of R&D, underground) and Franck Boudreault (Electrification Transformation Lead, underground) to deliver a scoop (pun intended).

The pair, during their presentation, ‘From one generation to the next – learnings from zero emission mining’, took it in turns to provide updates.

Boudreault revealed the company’s plan to create battery-electric conversion kits for not only Epiroc diesel-powered equipment out in the field but other OEMs’ machines, before Hedqvist disclosed the company’s in-development battery-electric 18 t LHD would be trialled at LKAB’s Sustainable Underground Mining (SUM) project in Sweden. Epiroc has already delivered a diesel-powered Scooptram ST18 to be trialled in autonomous mode at the SUM project.

It was Yameogo, a mining engineer with much experience operating in underground mines in Canada, that provided the event’s big picture talk in his presentation, ‘Will electrification spark the next wave of mining innovation?’

He talked up the need for industry collaboration between miners, OEMs and service providers in not only electrifying equipment and operations, but also other types of technology.

“That type of collaboration and co-creation framework will actually help mining companies also think about innovation and other items part of electrification and equipment, in general,” he said.

The focus narrowed slightly to open-pit electrification during Dr Bappa Banerjee’s talk, ‘An electric future for mine haulage’. Dr Banerjee, General Manager of Mining Equipment for Wabtec, emphasised from the off that there was no one-size fits all solution to going electric in this sector.

“It’s becoming clear to us…that perhaps it will be a combination of technologies that really help us get to a solution that is feasible,” he said.

This solution, he said, depended on the mine application and haulage scenario, underlining the need for technology flexibility.

In his presentation, Dr Banerjee pitted a diesel-powered haul truck with 2,500 horsepower (1,864 kW) as his baseline solution against a hybrid solution with a 2,500 hp diesel engine and 200 kWh battery as one alternative, and all-electric truck platforms equipped with trolley assist (with 800 kWh battery) and stationary charging (1,200 kWh battery).

The energy cost versus productivity outcome he showed proved his earlier point about different applications suiting different solutions, with varied results depending on if these trucks were deployed on downhill, uphill or flat hauls.

GE Transportation, since merged with Wabtec, has previously demonstrated a battery-diesel hybrid solution on a Komatsu 830E-1AC and Wabtec has plans to release trolley solutions for Komatsu 830E-5 and 930E-5 haul trucks in 2021, so this analysis includes hard industry data.

Dr Banerjee concluded on the decision-making aspect of going electric: “These are not just point in time decisions we have to make regarding the CAPEX and where we are in the lifecycle of the mine, but decisions across decades sometimes.

“Perhaps the best way to approach this would be to start with a technology that is more flexible up front or has more options.”

Brian Huff, Vice President of Technology for Artisan Vehicle Systems, a Sandvik Mining and Rock Technology business unit, used his presentation to reinforce that battery-powered solutions were the way forward in the underground environment.

‘Rethink the machine, not the mine’ was the title of his presentation and Huff stayed true to it from the off: “The basic message is that this is not as hard as you think it is. There is a real big change coming to the mining industry, but it may not be as difficult as you think to accomplish a conversion to battery-electric equipment.”

Similar to Hedqvist’s mention of the newfound freedom available to engineers when designing these next generation battery-electric machines, Huff explained that Artisan’s generation three BEV blueprint started with a battery-electric driveline and built from there.

“Major parts of the frame can be removed to facilitate swapping…[and you can have] double to triple the power density of the machine (compared with the diesel-powered equivalent) to improve performance,” he said.

He moved on to tackle the usual range anxiety question head on, displaying a video of a 13 km haul on a one-in-seven grade. Within this, he showed that the ability to swap batteries during the uphill haul meant there was no loss in haulage productivity when compared with the a similar payload diesel-powered machine.

The time losses related to battery swapping – around six minutes per swap with the Z50 – were more than offset by the increased haulage speed, according to Huff. “It is about 10% faster on the climb,” he said when comparing the BEV unit with a conventional diesel truck.

Productivity could be further boosted with the introduction of Artisan’s patented AutoConnect system. Fitted on the company and Sandvik’s newest 18 t payload LH518B LHD, this system allows the battery swap to be completed in well under five minutes, according to Huff. IM understands an AutoConnect retrofit option could allow the Z50 haul truck to match that swap time.

Add to this productivity benefit, decreases in operating cost and total cost of ownership, and it is hardly surprising Barrick recently signed off on a trial of four of these Z50s at its Turquoise Ridge joint venture gold mine in Nevada.

Safety, cost, maintenance, productivity and even battery life; you name it, The Electric Mine Virtual Conference discussed it.

The good news is a second dose of electrification talk is only four months away, with The Electric Mine 2021 conference taking place on March 15-16, 2021, in Stockholm, Sweden.

Sandvik and Artisan reveal new 18 t battery-electric LHD

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Sandvik Mining and Rock Technology has matched its decades of engineering expertise with Artisan Vehicle Systems’ 18 years of innovative powertrain technology and battery system expertise to come up with the new 18 t payload LH518B battery-electric loader.

Sandvik acquired Artisan last year, in the process gaining 10 years of mining battery-electric vehicle (BEV) deployment experience. The latest BEV loader, which comes on top of Artisan’s 4 t and 10 t capacity loaders – plus its 50 t payload truck – is the first true collaborative design effort between the two companies.

The LH518B from Sandvik has been designed from the ground up, entirely around the loader’s Artisan™ battery system and electric driveline to best leverage the possibilities that the battery technology brings, Sandvik says.

“It was not enough to replace some components or redesign only a part of the equipment: the designers were compelled to rethink the whole machine,” Sandvik said.

The most powerful 18 t loader ever built, according to Mike Kasaba, Managing Director of Artisan, a Sandvik Mining and Rock Technology business unit, the new LH518B can fit in a 4.5 x 4.5 m tunnel and features independent front and rear drivetrains, allowing high payload capacity while keeping a low overall height, Sandvik says.

This low overall frame height of 2,565 mm – significant lower than other machines in its class – provides “for better manoeuvrability in low back height applications while increasing stability”, Kyle Hickey, VP of Engineering for Artisan, said at the Innovation in Mining virtual event on September 29.

“The use of smaller diameter tyres in the rear is an example of how this machine has been optimised for the application,” he added.

The LH518B is equipped with three 2,000 Nm permanent magnet motors, 450 kN of tractive effort, can operate at speeds up to 30 km/h and has 560 kW of continuous power output (peak power output of 660 kW).

“With no torque converter, transmission or engine to rev up, the loader is fast and agile,” Sandvik says. This means it can travel at a speed of 12 km/h fully loaded on a 20% grade ramp.

In practice, changing the loader battery is easy and quick, thanks to the patented AutoSwap feature, Sandvik says.

This self-swapping system for the Artisan battery pack has been developed to offer a minimum amount of manual handling. According to Sandvik and Artisan, changing the battery only takes about six minutes, and it can be done in a passing bay or old re-muck bay with no need for overhead cranes or external infrastructure.

“The new AutoConnect feature, available for the first time on the LH518B, is making swapping even easier and faster by automatically connecting and disconnecting the battery pack to the machine,” Sandvik says. “Aside from unplugging and plugging in the charger, the operator doesn’t need to leave the cabin, which saves minutes on the swapping procedure and decreases effort and risk in the swapping process.”

This is aided by a stability system, within the Artisan battery system, that allows the battery to be dropped off at any location without any prepared infrastructure, according to Hickey.

Kasaba said the LH518B is the “only battery loader capable of dropping off and picking up its own battery”. This process of tramming between battery swaps is enabled by the LH518B having a small on-board battery that remains in place at all times, according to Hickey.

Brian Huff, VP of Technology for Artisan, explained during the event that the LH518B is built for automation and will be available in the future with AutoMine integration.

The LH518B will be available to customers in North America this year, followed by select other areas in 2021, he added.

Sandvik concluded on the subject of BEVs: “Currently, Sandvik is expanding the battery-electric vehicle loader and truck offering and prepares to enter new market areas, which will happen in phases and model by model. When the battery loaders and trucks are introduced to new markets, Sandvik will be ready to offer full product support and aftermarket services for its customers.”

Included in this is the company’s Battery as a Service offering which IM understands will help miners adopt these new battery-electric vehicle solutions, which currently come with a higher capital cost than the diesel equivalent.