Tag Archives: battery-electric

3ME, Batt Mobile Equipment gear up for TRITEV deployment at Aeris’ Tritton mine

With the launch of the ‘TRITEV’ in Australia earlier this month, 3ME Technology and Batt Mobile Equipment unveiled what is believed to be the first fully battery-electric retrofit 20 t loader suitable for deployment in underground hard-rock mines.

The Integrated Tool-Carrier/Loader is scheduled to arrive at Aeris Resources’ Tritton underground copper mine in New South Wales later this year as part of an initiative developed under Project EVmine, with the help of METS Ignited.

It follows on the heels of Safescape’s Bortana EV, launched in 2019, also as part of Project EVmine.

Steven Lawn, Chief Business Development Officer at 3ME, told IM that the machine’s development represented more than just a “diesel refit”.

“The machine we used was a second-hand Volvo L120E that required a ground-up rebuild,” he said. “The guys removed all diesel internal combustion engine components except the transmission and drivetrain. They then modelled the expected duty cycle.”

After this modelling, the designers developed a battery-electric system (battery, motor, motor control unit and ancillary items) that would suit the application at hand.

The software team then entered the process, writing the vehicle control unit software (ie the software that makes everything work), with a focus on ensuring the human machine interface remained the same so there was no difference for an operator controlling the legacy diesel variant and the battery-electric retrofit version, Lawn explained.

They then integrated the system into the existing platform before the team at Batt Mobile Equipment provided a mechanical overhaul of the machine.

Ahead of deployment at Tritton, the company plans to test the machine at the Newstan mine, in New South Wales, Lawn said. This underground mine, previously owned by Centennial Coal, was put on care and maintenance back in 2014.

The partnership that delivered this industry first already has eyes on another EV retrofit, Lawn said, explaining that a Minecruiser platform for use in underground hazardous area mines is next on the agenda.

3ME Technology is understood to have an upcoming release in the pipeline in regards to its state-of-the-art battery system for mining applications, now also under demand from the defence market as indicated by recent public announcements about 3ME Technology’s participation in Australia’s C4 EDGE Program.

“The increased levels of safety and compliance achievable with the 3ME Technology battery system means that 3ME Technology is spearheading the supply of high-performance lithium-ion batteries into underground mining,” the company said.

Cambrian college to offer battery-electric vehicle training course

Cambrian College, in Greater Sudbury, Ontario, is trying to equip miners with the relevant skills to facilitate the sector’s electrification transition by offering a new Corporate Training course focused on battery-electric vehicles (BEVs).

The BEV training course is being delivered by Cambrian’s Corporate Training division in partnership with the College’s Centre for Smart Mining – part of Cambrian R&D, the college’s applied research division. The course is designed specifically for heavy-duty equipment technicians employed in the mining sector.

The use of industrial BEVs is increasing in modern mining and the industry needs skilled workers to implement and maintain this new technology, the college said.

“Cambrian’s latest Corporate Training course will ensure those employees already working in mining can obtain that expertise and qualifications in Greater Sudbury,” it said.

Stephen Gravel, Manager of Cambrian R&D’s Centre for Smart Mining, said: “An often overlooked, yet critical component in the adoption of new techniques and technologies in the mining sector is ensuring the workforce is adequately trained.

“A major barrier to getting new technologies like BEVs into mines is the lack of familiarity and comfort among heavy-duty equipment technicians in the field. The Centre for Smart Mining is looking to address this problem through targeted technology upskilling in a number of important high-tech areas; the first of which being BEVs.”

The course begins online shortly and will be led by a qualified instructor, Cambrian College said. On-campus in-person learning opportunities are expected to be available in the future as activities fully resume on the college’s campus. Those looking to upgrade their skillset will gain much needed industry knowledge, Cambrian College says, through four modules:

  • Fundamentals of Battery Electric Vehicle Safety;
  • Introduction to Battery Electric Mobile Equipment;
  • Introduction to Battery Electric Vehicle Communication and Troubleshooting; and
  • Practical Battery Electric Vehicle Training.

“At Cambrian, we’re committed to keeping up with the latest industry trends and making sure our courses are meeting demands in real time,” Cambrian College’s President, Bill Best, said. “The advancements in mining, especially with innovation and the shift to battery-electric vehicles, is just one area where we are the premier destination for those looking to upgrade their skills to be ready for the jobs that just didn’t exist a few short years ago.”

Epiroc to supply Vale with BaaS agreement, battery-electric equipment

Epiroc says the world’s first Batteries as a Service (BaaS) agreement has been finalised in Canada, with Vale and the mining OEM partnering on this new approach for utilising battery technology in mining operations.

Along with the BaaS agreement, Epiroc will be providing Vale with 10 battery-electric vehicles for two Canadian mine sites. These machines will include four Scooptram ST14 loaders, two Boomer M2C drill rigs, two Boltec MC bolting rigs and two Minetruck MT42 trucks. The miner will also acquire three of Epiroc’s charging cabinets and seven charging posts for equipment support, the company said.

Vale has previously said it hopes to have upward of 20 battery-powered vehicles operating within its North Atlantic operations (Creighton, Coleman, Copper Cliff, Garson and Thompson mines) by the end of 2020.

As mining companies continue to strive for sustainable productivity and zero emissions, the fast evolution and development of different options within the field of battery technology can be extremely challenging, Epiroc says.

With BaaS, Epiroc works directly with the customer to define a battery plan that suits the needs of their operation. The lifespan is guaranteed and the battery status is carefully monitored to ensure predictive maintenance with reduced downtime, according to the company. If a customer wants to increase or decrease their capacity, they can adjust their plan and the service will be tailored to meet their requirements.

As part of an ongoing sustainability commitment, Epiroc will remove old batteries from site and replace them with new batteries. These older batteries are then used for secondary applications and will be recycled at the end of the process, the company says.

The delivery of the battery equipment to both sites will occur over the course of 2020 and into the March quarter of 2021, according to Epiroc.

“A key component to the success of this offering is the flexibility it allows our customers,” Shawn Samuels, Product Manager Rocvolt, Epiroc Canada, said. “We take ownership of the battery itself and automatically replace and update the units as needed, which means the mine site can breathe easier and continue to focus on heightened production.”

Jason Smith, General Manager Epiroc Canada, said: “We value and look forward to continuing our successful partnership with Vale as we move towards a zero emissions future in mining together. We both recognise the positive impact a successful battery service implementation can have on operations, so our mutual confidence in one another is well placed.”

MEDATech speeds up battery-electric mining charge

The potential for electric drivetrain specialist MEDATech Engineering Services to add another high-profile client to its list of mining company references is high given the developments the Collingwood-based company is currently working on.

Having helped Goldcorp (now Newmont) and several OEMs realise their vision of an all-electric mine at Borden, in Ontario, MEDATech is energising more electrification projects with its ALTDRIVE system.

The company has been developing electrification technology for heavy-duty, off-highway vehicles for about six years. Its current drive train technology, MEDATech says, is capable of being scaled for most heavy haul applications in mining and other industries.

These last six years have seen it help fellow Collingwood resident MacLean Engineering convert underground roof bolters, graders, water trucks and many other production support vehicles for Canada’s underground mining sector. MEDATech has also helped Torex Gold and its Chairman, Fred Stanford, develop the necessary equipment to take the Muckahi all-electric underground mining concept to testing phase. Similarly, it has played a role in Nouveau Monde Graphite’s all-electric open-pit mine vision as part of a Task Force Committee developing studies for the Matawinie project, in Quebec.

Aside from the Muckahi project, the ALTDRIVE system, having been engineered to replace internal combustion engines, has been the driving force behind this work, according to Jeff Taylor, Managing Director of MEDATech Engineering.

The powertrain consist of a hybrid, or completely electric means of propelling the machine with industrial batteries, and can be adapted to heavy equipment such as commercial trucks, tractors, excavators, buses, haul trucks, light rail and – most important in this context – mining vehicles.

ALTDRIVE leverages battery systems from Akasol and XALT, chargers and power electronics from Bel Power Solutions and Dana TM4’s electric motors. The balance of the power electronics, control systems and sub systems, thermo management systems, VMU (a software component critical to the power management of the battery, electric motor charging and regenerative capabilities), and integration engineering is developed by MEDATech.

Taylor says it is the battery chemistry and charging philosophy of the ALTDRIVE technology that differentiates it from others on the market.

“The battery chemistry is really quite advanced and is all based on the future of fast charging,” he told IM. “In this scenario, we don’t want the batteries to be brought down to a high depth of discharge (DOD). We instead want operators to carry out quick, opportunity charging on the go.”

Most of the machines the company has been involved in manufacturing to date have been equipped with 25-100 kW on-board chargers, yet Taylor thinks its new breed of fast-charge battery-electric solutions could eventually require up to 1 MW of power and be charged through an automated system.

Such powerful charging systems may be the future of MEDATech’s ALTDRIVE drivetrain technology, but for now it is focused on leveraging the system for the conversion of a diesel-powered Western Star 4900 XD truck (pictured).

Part of a collaborative project with a Western Star dealer in Quebec where the dealer (Tardif) has donated the truck and MEDATech has provided its materials and engineering expertise, the truck is equipped with a 100 kW capacity on-board charger, 310 kWh of battery capacity, loaded gross vehicle weight of 40,824 kg and 25% more horsepower than its diesel-powered equivalent.

Loaded, the truck can cover 85 km (0% grade) on a single charge (80% DOD). This vehicle is ideal as a pit master unit for short run material moving, road maintenance, water hauling/spraying and snow plowing activities, according to the company. The truck can be on-board charged (2.5 hours) and fast charged (1 hour) during idle periods (at 80% DOD).

The machine will be ready for demonstrations at a gravel pit around 15 km away from the company’s Collingwood headquarters in September, and it has already caught the attention of some major miners.

According to Taylor, Anglo American (Chile), Teck Resources (British Columbia) and Vale (Ontario) are scheduled to see the BEV 4900 XD unit in September at the Collingwood facility. “Each company is looking at an electric machine(s) for their operations,” he said. “They might end up with a different truck, built to their exact specifications, but they want to test this machine out to experience a battery-electric conversion.”

After the 24 t payload truck, the company has eyes on converting a 40 t payload Western Star 6900 XD diesel truck to battery-electric mode.

“This will just be a bigger conversion on a bigger truck,” Taylor explained. “We’ll have extra room on the truck for placing batteries and the extra motor that will be required. It will also be an all-wheel drive vehicle, as opposed to the real-wheel drive of the 4900 XD, which will need some extra engineering.”

While Taylor said work on converting this 40 t machine would not start until the all-electric 4900 XD had been tested, he saw plenty of opportunities for scaling up and down the ALTDRIVE technology to create more customised ‘green’ vehicles for the mining industry.

“If you look at any mine site in Canada, there are five or 10 vehicles you could replace with electric versions,” he said.

Epiroc looks to halve CO2 emissions from customers’ use of equipment

Epiroc has launched new sustainability goals for 2030 that, it says, further advance the group’s ambitions on issues such as climate change and diversity.

Sustainability is already integrated in Epiroc’s business operations and, this year, the group has established long-term sustainability goals that support the Paris Agreement and the UN 2030 Agenda for Sustainable Development, it said.

The new sustainability goals for the next decade include halving CO2 emissions from operations, transport and major suppliers, as well as from customers’ use of Epiroc equipment.

Helena Hedblom, Epiroc’s President and CEO, said: “Since the majority of the CO2 emissions occur in the use phase of our products, it is crucial that we not only limit our own emissions in operations and transport but also take on the greater challenge to reduce the emissions when the products are in use. We are working together with our customers to reduce the impact on climate.”

Epiroc says it is continuously innovating to make its equipment as climate-friendly and safe as possible.

Its new generation of battery-electric mining machines, which is generating strong interest from customers globally, is one example. Epiroc’s package of digital solutions, 6th Sense, including automation, also goes a long way to reduce customers’ environmental impact as well as to improve health and safety conditions, it added.

“With the new sustainability goals for 2030 we are taking our ambitions in this area to a new level,” Hedblom adds. “Epiroc is proud to help making the mining and infrastructure industries as sustainable as possible.”

Other examples of Epiroc’s new goals for 2030 include doubling the number of women in operational roles, substantially reducing work-related injuries, and further strengthening the group’s commitment to the company’s Code of Conduct.

Fortescue aims for net zero operational emissions by 2040

Fortescue Metals Group has become the latest company to announce plans to achieve net zero operational emissions.

The goal, which the company aims to achieve by 2040, is core to Fortescue’s climate change strategy and is underpinned by a pathway to decarbonisation, it said. This includes the reduction of Scope 1 and 2 emissions from existing operations by 26% from 2020 levels, by 2030, it said.

Other miners such as Vale, BHP and Rio Tinto have all made similar pledges in the last year.

Fortescue Chief Executive Officer, Elizabeth Gaines, said: “Fortescue has a proud history of setting stretch targets and our 2030 emissions reduction commitment, together with our goal to achieve net zero operational emissions by 2040, positions Fortescue as a leader in addressing the global climate change challenge.

“Fortescue supports the Paris Agreement long-term goal of limiting global temperature rise to well below 2°C above pre-industrial levels, and our emissions reduction targets align with this international objective. Our success will be founded on practical initiatives that will allow us to deliver on our targets in an economically sustainable manner.”

Gaines said since October 2019, Fortescue and its partners have announced investments in excess of $800 million in significant energy infrastructure projects to increase its renewable energy supply. These will be a key contributor to its pathway to achieving the emissions reduction targets, she added.

This includes the Chichester Solar Gas Hybrid Project, announced with Alinta Energy in October 2019. Currently under construction, the project will include a 60 MW solar photovoltaic (PV) generation facility at the Chichester Hub, comprising Fortescue’s Christmas Creek and Cloudbreak mining operations. In addition, a circa-60 km transmission line will be built, with completion due mid-2021. This will link the Christmas Creek and Cloudbreak mining operations with Alinta Energy’s Newman gas-fired power station and 35 MW battery facility.

Another major investment is the $700 million Pilbara Energy Connect (PEC) program. This includes the $250 million Pilbara Transmission project, consisting of 275 km of high voltage transmission lines connecting Fortescue’s mine sites, and the $450 million Pilbara Generation project, comprising 150 MW of gas-fired generation, together with 150 MW of solar PV generation and large-scale battery storage. “The PEC project leverages existing assets and provides Fortescue with a hybrid solar gas energy solution that enables the delivery of stable, low cost power and supports the incorporation of additional large-scale renewable energy in the future,” the company says.

These two initiatives, together, will deliver 25-30% of Fortescue’s stationary energy requirements from solar power, according to Gaines.

Gaines added: “Mining is one of the most innovative industries in the world and Fortescue is harnessing this technology and capability to achieve carbon neutrality with a sense of urgency. In addition to the development of gas technology and renewables for our stationary energy requirements, we are working towards decarbonising our mobile fleet through the next phase of hydrogen and battery-electric energy solutions.”

In terms of hydrogen, Fortescue, in 2018, signed a partnership agreement with the CSIRO to develop its metal membrane technology, which provides the potential for the bulk transportation of hydrogen through ammonia.

Emissions data and performance against targets will be reported annually as part of Fortescue’s annual reporting suite, the company said. Baseline and annual emissions data will be calculated on a financial year basis.

While not included in the existing operations calculation, Iron Bridge – due to commence operation by mid-2022 – is likely to come with emissions reduction targets that align with Fortescue’s goal to achieve net zero operational emissions by 2040, the company said.

ICMM looks to align mining industry on cleaner, safer vehicles

When the International Council on Mining and Metals (ICMM) launched its Innovation for Cleaner, Safer Vehicles (ICSV) program just over a year ago, some industry participants may not have realised how much progress could be made so quickly by taking a collaborative approach.

The ICMM has proven influential across the mining industry since its foundation in 2002 in areas such as corporate and social governance, environmental responsibility, and stakeholder relations, yet it has rarely, until this point, engaged directly as an industry group with original equipment manufacturers (OEMs) and service providers.

Close to 12 months after being established, it’s clear to see the program and the council itself has been successful in bridging a divide.

It has been able to corral a significant portion of the mining and mining OEM market players into a major industry discussion on core focus areas set to dominate the sector for the next two decades.

Now 27 of the world’s leading mining companies and 16 of the best-known truck and mining equipment suppliers are collaborating in a non-competitive space “to accelerate the development of a new generation of mining vehicles that will make vehicles cleaner and safer,” the ICMM says.

The ICSV program was created to address three of the most critical safety, health and environment performance issues in the ICMM’s mission towards zero harm and decarbonisation. Achieving this goal would involve the industry introducing and adopting the next generation of equipment to respond to the challenges.

More specifically, the program aims to:

  • Introduce greenhouse gas emission-free surface mining vehicles by 2040;
  • Minimise the operational impact of diesel exhaust by 2025; and
  • Make collision avoidance technology (capable of eliminating vehicle related collisions) available to mining companies by 2025.

In all three, it seeks to address the industry’s innovation challenge of ‘who motivates who’ or the chicken and egg analogy, according to Sarah Bell, Director, Health, Safety and Product Stewardship for the ICMM.

“You can imagine a mining company saying, ‘we can’t adopt technology that doesn’t yet exist’ or an OEM saying, ‘we can’t invest in development because we’re getting mixed market signals’. This is, of course, why this program has been set up in the way it has,” she told IM. “Bringing both the mining company and OEMs together, they have been able to work through these normal innovation challenges and align on defining the direction of travel and critical complexity to be solved for each of the ambitions set.”

High-level participation

The list of companies the ICMM has been able to involve in this program is impressive.

It is being guided by a CEO advisory group of six; three from the mining community – Andrew Mackenzie (CEO, BHP), Mark Cutifani (CEO, Anglo American) and Nick Holland (CEO, Gold Fields) – and three from the mining equipment supply side – Denise Johnson (Group President of Resource Industries at Caterpillar), Max Moriyama (President of the Mining Business Division at Komatsu) and Henrik Ager (President of Sandvik Mining and Rock Technology).

On the mining company front, ICMM membership makes up around 30% of the total metal market share, with some 46% in copper, 27% in gold and 42% in iron ore. Participating OEMs and third-party technology providers, meanwhile, include the three majors above, plus Cummins, Epiroc, Wabtec Corporation (formerly GE), Hexagon Mining, Hitachi Construction Machinery, Liebherr, MacLean Engineering, MTU, Modular Mining Systems, PBE Group, Nerospec, Future Digital Communication and Miller Technology.

Bell says the high-level participation builds the “widespread confidence” needed to accelerate investment in these three key areas”, while the ICMM’s focus on the leadership side of the technology integration equation and change management has proven “absolutely key”.

She clarified: “This collaboration operates under anti-competition and anti-trust rules. Our role is to convene the parties, motivate action and promote solutions.”

The program offers a “safe space for the OEMs and members to work openly in a non-competitive environment”, she added, explaining that the aim is not to come up with “preferred technologies”, but define the “functional and operational pathways required to meet the ambitions set”.

Vehicle interaction (VI)

Some of the ambitions look easier to achieve than others.

For instance, collision avoidance and proximity detection technology has made huge strides in the last decade, with the ICMM arguing its 2025 target is like a “sprint”, compared with the “10,000 m race” that is minimising DPM underground by 2025 and the longer-term aim to introduce GHG-free surface mining vehicles by 2040.

“There are regulations that require implementation of collision avoidance and proximity detection technology by the end of 2020 in South Africa,” Bell said. This will undoubtedly provide a catalyst for further developments to speed up.

The ICSV program is also leveraging the work of the Earth Moving Equipment Safety Round Table (EMESRT) in its development of fundamental functional/performance requirements for operators and technology providers.

These requirements were updated and released by EMESRT in September and are known as ‘PR5A’.

Credit: Hexagon Mining

Bell delved into some detail about these requirements:

“The EMERST requirements are designed around a nine-level system that seeks to eliminate material unwanted scenarios such as – equipment to person, equipment to equipment, equipment to environment and loss of control,” she said.

“The fundamental change with this newly released set of functional requirements by EMESRT is that the mining industry users have defined the functional needs for levels 7-9 (operator awareness, advisory controls, and intervention controls). That stronger level of collaboration hasn’t necessarily been there.”

EMESRT and its guidelines have been given an expanded global platform through the ICMM’s ICSV, with the program, this year, providing the convening environment for users and technology providers to help finalise these updated requirements, according to Bell.

With all of this already in place, one could be forgiven for thinking the majority of the hard work involved with achieving the 2025 goal is done, but the working group focused on VI knows that while OEMs continue to retrofit third-party vehicle collision and avoidance systems to their machines the job is not complete.

“Let’s think about the seatbelt analogy: you don’t give buyers of vehicles a choice as to whether they want a seatbelt in their car; it just comes with the car,” Bell said.

“At the moment, by design, vehicles don’t always have this collision and avoidance systems built in, therefore there is a big opportunity for collaboration between OEMs and third-party technology providers.”

Underground DPM goals

“The DPM working group have recognised that, in the case of the DPM ambition, ‘the future is already here, it’s just unevenly distributed’,” Bell said.

“Bringing together the OEMs and the mining companies this year through the ICSV program has enabled the group to explore the variety of existing solutions out there today,” she added.

These existing solutions include higher-tier engines, battery-electric equipment, tethered electric machinery, fuel cell-equipped machines for narrow vein mining and solutions to remove DPMs and other emissions from the environment like Johnson Matthey’s CRT system.

And, there are numerous examples from North America – Newmont Goldcorp at Borden, and Glencore and Vale in Sudbury – South America – Codelco at El Teniente Underground – and Europe – Agnico Eagle Mines at Kittilä (Finland, pictured) – to draw from.

Bell also mentioned some examples from Australia where regulatory changes have seen miners apply existing technology and carry out changes in their work plans and maintenance practices to minimise DPM emissions.

Haulage and loading flexibility, battery charging and mine design have all come under the spotlight since these new generation of ‘green’ machines have emerged, so achieving the 2025 goal the ICSV stated is by no means a foregone conclusion.

“There remains more work to do in achieving diesel-free vehicles underground,” Bell said.

The interested parties are aware of this and the program’s DPM maturity framework is helping miners and OEMs plot a course to reaching the target, she explained.

“The DPM maturity framework promotes existing solutions available today that would enable a mining operation to reduce their DPM emissions to a level that would meet the ambition level (shown as Level 4 – transition to zero),” she said.

These frameworks are useful for starting a “change conversation”, Bell said, explaining that mining companies can assess within their organisations where they currently sit on the five-level chart and discuss internally how to move up the levels to meet their goals.

These same frameworks look beyond minimising “the operational impact” of DPM emissions underground, with Bell explaining that Level 5 of the maturity framework involves “non-DPM emitting vehicles”.

GHG-free surface mining vehicles

Even further in the distance is the longer-term target of introducing greenhouse gas emission-free surface mining vehicles by 2040.

This ambition, more than any other, is less clearly defined in terms of technological solutions across the industry.

While battery-electric solutions look like having the goods to reach DPM-free status underground with expected developments in battery technology and charging, the jury is still out on if they can create a GHG-free large-scale open-pit mining environment.

The world’s largest battery-electric haul truck – eMining’s 63-t payload eDumper (pictured) – may have proven its worth at a Ciments Vigier-owned quarry in Switzerland, but the world’s largest open-pit mines require a solution on another scale altogether.

As Bell said: “There is a lot of work to do to develop batteries at scale for surface fleet that suit the different operating conditions.

“That’s a key point because that lends itself to the fact that we don’t want one solution; we will need multiple solutions. We don’t want to stifle innovation; we want to encourage it.”

ICMM member Anglo American has hinted that hydrogen power could be one solution, and the miner is looking to show this next year with the development of its hydrogen-powered 300-t payload haul truck.

There has also been in the last 18-24 months a mini renaissance of trolley assist projects that, ABB’s Gunnar Hammarström told IM recently, could, in the future, work in tandem with battery-powered solutions to provide a GHG-free solution.

The ability for industry to pilot and validate technology options like this “within the boundaries of anti-competition” is crucial for its later adoption in the industry, Bell said.

She said a key enabler of industry decarbonisation is access to cost competitive clean electricity, which would indicate that regions like South America and the Nordic countries could be of interest in the short and medium term for deploying pilot projects.

It is this goal where the industry R&D spend could potentially ramp up; something the ICMM and the ICSV is aware of.

“For the OEMs and mining companies to effectively minimise capital expenditure, optimise R&D expenditure and reduce the change management required by the industry, there needs to be a careful balance of encouraging innovation of solutions, whilst managing the number of plausible outcomes,” Bell said.

In terms of encouraging the development of these outcomes, carbon pricing mechanisms could provide some positive industry momentum. Vale recently acknowledged that it would apply an internal carbon tax/price of $50/t when analysing its future projects, so one would expect other companies to be factoring in such charges to their future mine developments.

Industry-wide GHG emission caps could also provide a catalyst. In countries such as Chile – where up to 80% of emissions can come from haul trucks, according to ICMM Senior Programme Officer, Verónica Martinez – carbon emission reduction legislation could really have an impact on technology developments.

Forward motion

While 2019 was a year when the three working groups – made up of close to 50 representatives in each work stream – outlined known barriers or opportunities that might either slow down or accelerate technology developments, 2020 will be the year that regional workshops convened to “encourage first adopters and fast followers” to move these three ambitions forward take place, Bell said.

A knowledge hub containing the previously spoken of maturity frameworks (delivered for all three groups) will allow the wider industry outside of the ICMM membership to gain a better understanding of how the miner-OEM-service provider collaboration is working.

Bell said the ICMM already has a number of members testing these group frameworks on an informal self-assessment basis to understand “how they are being received at an asset level and feedback insights to the group in an effort to understand how we may portray an industry representative picture of where we are today”.

Such strategies bode well for achieving these goals into the future and, potentially, changing the dynamic that has existed between end users and suppliers in the mining sector for decades.

Bell said: “The feedback that we got from OEMs is that mining companies had completely different objectives, but they have now greater confidence that we are aligned on the direction of travel towards the ambitions set.”

Trolley assist to take off, ABB’s Hammarström says

Thanks to Boliden’s recent trial at its Aitik open-pit mine, in Sweden, the subject of trolley assist is back on the mining industry’s agenda.

Offering environmental and productivity benefits, trolley assist technologies have been spoken of for decades. In the height of the oil crisis of the 1970s, numerous studies examining applications were completed and miners made preparations to reduce their reliance on diesel.

Despite this, widespread industry adoption has not occurred. There have been some installations in Africa, in addition to one in Turkey (Kisladag), but the technology has not caught on to the extent many thought would happen.

ABB, which supplies not only batteries, drives and motors for battery-electric equipment, but can also provide the infrastructure required for trolley assist projects, believes the market is about to turn once again. Gunnar Hammarström, Global Product Manager Trolley Electrification Systems for ABB, thinks there are three main reasons why it is about to take off.

“One is the legislation and environmental part of the business case,” he told IM.

Boliden, which has moved from the 700 m trolley line trial at Aitik to confirming it will install an additional 3 km of trolley line at the mine, plus 1.7 km at Kevitsa (in addition to the accompanying conversion of diesel-electric haul trucks), says it will reduce its diesel consumption by 5,500 cu.m/y when its investment is complete. That is a big number.

“Another completely different reason for why demand has been picking up, especially for larger trucks, is there are a lot of diesel-electric trucks coming into mines,” he said. These trucks already have an electrical system on board to tap into, which makes it easy to put them on a trolley line.

Lastly, fuel prices are increasing all the time, Hammarström said. This is leading miners to diversify their energy mix to help reduce input costs.

When added to the productivity gains that can be achieved with trolley assisted haul trucks and the reduction in noise when trucks run on this line, it is hardly surprising Boliden is not the only one charging into trolley assist.

In the last year alone, First Quantum Minerals has said it will equip its Cobre Panama copper-gold mine, in Panama, with trolley assist, while Austria iron ore miner, VA Erzberg, has announced it intends to electrify the main haul road of its Erzberg mine site and operate a fleet of T 236 trucks from 2021 under trolley assist.

On top of this, RNC Minerals has said it is studying the use of trolley assist at its Dumont nickel-cobalt project in Quebec, Canada.

While trolley assist has been used long before the mine electrification phenomenon we know today gained traction, Hammarström sees trolley assist helping facilitate this market move.

“Generally speaking, I think for most of the vehicles you have in a mine, you can go on battery, but it is very far into the future where you have major uphill transportation of all your production in the mine through batteries,” he said.

The technology involved with stationary charging and the ability to re-charge the battery when going downhill would need to improve on the biggest haul trucks to make it a viable proposition, he explained.

“Yet, if you look into the future – and not that far – a diesel electric trolley might be an intermediate phase,” he said. “If you have invested in trolley now, you can certainly use it when you have batteries (driving the trucks).”

This could see battery-powered haul trucks carry out tasks ‘off-line’ when going downhill or on a flat before they ‘attach’ back onto the line for uphill transportation of material when the battery is recharged.

“I think after diesel-electric powered haul trucks, it will be a really good chance for on-board charging,” he said of the trolley infrastructure.

Epiroc books battery-electric orders from mines in Finland, Australia and Canada

Epiroc says it has recently secured orders for its second generation battery-electric machines from miners in Finland, Australia and Canada.

The orders come less than a year since the mining original equipment manufacturer launched the new range at an event in Örebro, Sweden.

In Finland in the September quarter, Agnico Eagle Mines ordered the Boltec E Battery rig for use at its Kittilä mine, Europe’s biggest gold operation.

The company, as part of the EU-led Sustainable Intelligent Mining Systems (SIMS) project where Epiroc is serving as a coordinator, has also been testing Epiroc battery-electric equipment. A Boomer E2 Battery has been operating for some months at the mine and, in August, a Minetruck MT42 Battery (42 t truck) and a Scooptram ST14 Battery (14 t LHD) arrived as part of the project.

Jari Kolehmainen, Production Manager at Agnico Eagle Mines, said the Boomer E2 Battery had been performing well and a diesel engine had not “been missed”.

He continued: “Operator feedback has been positive and we are looking forward to expanding our fleet with more electrical powered equipment in the near future. Therefore we are also very excited to be testing the battery-powered mine truck and loader. These tests are giving us the confidence to be a successful early adopter of this new and exciting technology.”

In addition to the orders and testing at Kittilä, several orders from other companies have been booked in previous quarters for battery-electric versions of the Boltec rock bolting rig, Boomer face drilling rig, Scooptram loader and Minetruck hauler, the company said.

Epiroc, upon launching its second generation machines in November 2018, said it had clocked up more than 60,000 hours of operating time with these electric machines. It is being helped along the way by battery maker Northvolt and ABB. Epiroc has committed to its Batteries-as-a-service offering that sees the mining OEM provide a warranty for the battery and provide both software and hardware updates on an annual basis.

The company launched its first battery-electric machines in 2016, adding, in November 2018, 14 t and 18 t LHDs, a 42 t truck and a mid-sized drilling family including face drilling, production drilling and rock reinforcement rigs. Epiroc aims to be able to offer its complete fleet of underground mining equipment as battery-electric versions by 2025.

The benefits of this technology include improved health and safety, lower total cost of operation and higher productivity. The advantage is especially significant for deepening underground operations where mining companies traditionally must invest heavily in ventilation to air out the diesel fumes.

Helena Hedblom, Epiroc’s Senior Executive Vice President Mining and Infrastructure, said: “We see very strong customer interest for our new battery-electric mining machines. The technology is now well established, and more and more mining companies are realising the significant benefits that come with using electric machines instead of diesel. We are proud to spearhead the mining industry’s drive toward a fossil-free future.”

eMining looks to retain battery-powered haul truck lead

eMining looks to be two-and-a-half years ahead of its competition with the development of its battery-powered haul truck, the eDumper, but many hurdles still lie ahead for the KUHN Schweiz-owned company to convert this market lead into orders.

Seeing it in the flesh last week at the Ciments Vigier SA limestone quarry, near Biel-Bienne, in Switzerland, IM was impressed with the 63 t (payload) machine.

Comparing it with an original Komatsu HD605-7 – one of which was handily on site – there is not much difference apart from the four battery packs that appear to slot in as if they were always there.

As Gernot Beutle, Sales Project Manager for eMining, confirmed the major changes involved switching the diesel engine out for the electric motor, a change in the hydraulics to improve the lifetime of the equipment and a new truck body (a Duratray rubber suspended dump body). The latter was needed to facilitate the smooth runoff of material from the truck body in winter. Without the heat generated from a diesel engine, there was a possibility the material could get stuck when temperatures plummet – a distinct possibility at the limestone quarry, which is more than 1,000 m above sea level and can see temperatures drop as low as minus-20°C, Beutle said.

There was also a redistribution of the haul truck’s weight to the axles in order to cope with the addition of the four battery packs, which can generate up to 700 kWh of energy.

The eDumper has certainly been run through its paces at the limestone quarry, clocking up more than 1,500 hours, coping with inclines of as much as 13% and having its tyres equipped with chains during the height of winter.

While in most conditions the truck only needs an overnight recharge once every three days, Beutle says the addition of tyre chains in winter can run down the battery more on the incline and result in increased regularity of charging.

On the other hand, the 13% inclines are no problem for the battery-electric truck. With a higher torque than the diesel equivalent, it can quietly accelerate up hills at speeds of up to 40 km/h, with the downhill route seeing the battery recharge thanks to the regenerative braking capacity.

From first looks, the team at the limestone quarry treat the eDumper just like the rest of the mixed truck fleet – which also includes Cat 775Fs. The battery-powered machine tracks the same route to the awaiting Cat 990H wheel loader and carries the same tonnage as the other haul trucks. The operators do, however, appreciate the quietness of operation it offers and that increased power.

One would expect Le Lynx (the name of the inaugural eDumper) to be joined by another unit at the limestone quarry in the not too distant future – indeed there was a second charging station set up at the quarry that would indicate its impending arrival – but finding more buyers for this world-record battery electric machine has proven tricky so far.

Talks with other quarries and mining companies are at various stages, Beutle said, with talks conducted this year potentially turning into purchase orders at the beginning of next year.

Other mining companies – a few falling into the ‘major’ category – had been to visit the quarry and the machine to see it in operation.

The problem eMining and Beutle face in finding another perfect partner like Ciments Vigier is the cost, application, battery life and potential returns these green haul trucks offer.

The battery-powered eDumper is currently likely to cost two-and-a-half-to-three-times more than the diesel equivalent (with the battery packs currently taking up 30-40% of the upfront cost) and, in general, it requires an operation time of five-to-10 years to pay back the upfront capital. On the other side of the equation, reduced maintenance costs with the removal of the diesel engine is one operating cost benefit, as is the higher torque, speed and acceleration the truck offers. These aspects have seen the company actively market a total cost of ownership (TCO) model in all its negotiations.

The NMC lithium-ion battery it is fitted with, meanwhile, looks like having 5,000-7,000 cycles in it. This is plenty for this limestone quarry operation, but might not be enough for bigger mining operations.

While the eDumper appears to provide a positive TCO equation for Ciments Vigier, it is not suited to every operation. The reason it works at the limestone quarry in Switzerland is the fact it travels uphill unladen with material and is able to recharge its battery as it makes the descent with a full payload. There are not many mines with such an operating blueprint.

This has seen eMining ask all potential customers to fill out a check list before negotiations progress to ensure it is worth having further conversations. A site visit is normally conducted after this list is analysed and a detailed feasibility study is written up to ensure everything is taken into consideration before an investment decision is finalised.

A larger, 100 t (110 ton) battery-powered truck could swing the eDumpers’ TCO equation in the favour of a positive investment decision and Beutle knows this.

“At this size, we are much, much more efficient than a diesel equivalent going uphill,” he told IM, explaining the diesel burn is that much greater when you add the extra 37 t of payload.

What he is also aware of is the likelihood the company will need a partner to manufacture this larger vehicle.

The company originally obtained some Swiss government funding to build the eDumper over the 18-month period it took to develop. One would hope, given the current greenhouse gas emission clampdown on off-highway vehicles in Europe, it would be able to seek similar ‘green’ funding for a 100 t truck build.

That is without even considering an original equipment manufacturer (OEM) offering financial support as a development partner. Many OEMs already have diesel machines in this payload bracket, so know there is a significant market for this size machine.

Beutle says companies extracting limestone, coal, graphite and other materials have also shown an interest in a 100 t battery-powered unit: more potential partners.

For eMining to retain its lead in the race to produce a battery-powered haul truck for the open-pit mining space, though, it would need to keep its autonomy from any potential partner. The reason the company was able to open such a gap over much bigger rivals is the fact it is structured as a startup. While parent company KUHN may be a Komatsu equipment dealer, Komatsu was not involved with eMining or the eDumper, according to Beutle. This enabled the company to develop the eDumper over that 18-month period. One can’t imagine an OEM being able to replicate such a feat.

In the near-term, eMining’s best chance of proving its battery-power worth outside of Switzerland is selling retrofit kits to companies interested in recreating the eDumper. The company plans to offer component kits and services to clients or sales partners to assemble the vehicles on their own – this could be particularly practical outside of Europe where KUHN’s servicing footprint is not as vast.

What fast became apparent from spending just a few hours in this limestone quarry is that the eDumper works, eMining is the most likely firm to deliver a battery-powered haul truck into the open-pit mining space and that most miners will require a bit more convincing before they buy one.