Tag Archives: mine power

EPA project approval bodes well for improved Pilbara renewable energy options

Miners in the Pilbara could soon have greater access to renewable energy options after Western Australia’s Environmental Protection Authority (EPA) gave a large-scale development project the thumbs up.

The EPA said it had recommended environmental approval for the wind and solar renewable energy project, subject to conditions including managing and monitoring impacts on migratory birds.

EPA Chair, Dr Tom Hatton, said the proposed Asian Renewable Energy Hub comprised a series of onshore wind turbines and solar panels situated about 220 km east of Port Hedland, with a transmission cable corridor to the coast and subsea cables to the edge of state waters.

The Asian Renewable Energy Hub will generate up to 15,000 MW of renewable energy in Western Australia, with up to 3,000 MW dedicated to large energy users such as new and expanded mines and downstream mineral processing, the owners of the project say. “The bulk of the power will enable large scale production of green hydrogen products for domestic and export markets,” they added.

Dr Hatton said NW Interconnected Power Pty Ltd’s proposal included the construction and operation of a large-scale renewable energy project with an expected operational lifespan of 50 years.

“One of the key environmental issues the EPA considered was the proposed clearing of 11,962 ha of native vegetation, and its potential impact on fauna habitat, flora and vegetation,” he said. “The EPA also considered the potential impact from the construction and operation of four subsea cables on benthic communities and habitat, marine environmental quality and marine fauna.”

Fire management was also considered a key issue, with a staged fire management strategy proposed to monitor the potential impacts and benefits of a landscape-scale prescribed burns program, according to Dr Hatton.

The proposal involves the construction of up to 1,743 wind turbines, solar panels, above and below ground transmission cables and four subsea power cables, covering an onshore and offshore development envelope of 662,400 ha, the EPA said.

“The EPA recommended that the proposal be implemented, subject to conditions including consultation on management plans with relevant stakeholders, including traditional land owners,” it said.

The EPA’s report on the Asian Renewable Energy Hub to the Minister for Environment is now open for a two-week public appeal period, closing on May 18. The Minister for Environment will make the final decision on the proposal, it added.

Nordgold asks China’s SUMEC to power up Lefa gold mine

Nordgold Group is looking to reduce its greenhouse gas emissions with the construction of a new 33 MW power plant at its Lefa mine in Guinea.

The gold producer has signed an engineering, procurement and construction agreement with China manufacturing service group SUMEC, a key member of China National Machinery Industry Corporation (SINOMACH), to design and construct the plant.

The new heavy fuel oil facility will replace the existing power plant, in turn reducing both fuel consumption for electricity production by 15% and engine oil by 30%, according to Nordgold. This will result in a 17,000 t/y reduction of greenhouse gas emissions, the company said, which is in line with Nordgold’s climate change objectives as well as its commitments to the United Nations Sustainable Development Goals.

Hyundai Heavy Industries, the world’s largest shipbuilding company and leading manufacture of heavy industry machinery, is providing the power plant’s main generating equipment.

Nordgold said: “The power plant will enable a significant reduction in operating costs, in addition to enhancing the stability of the electricity supply for over 15 years of Lefa’s life of mine. Moreover, the installation of the latest fire detection systems will increase employee safety.”

The design and construction of the project is expected to cost around $23 million, with the power plant expected to be completed by the end of 2021.

During construction, hundreds of additional jobs will be created and essential construction materials including sand, cement, gravel amongst others will be sourced locally from Guinean suppliers, according to Nordgold.

Nikolai Zelenski, CEO of Nordgold, said: “Even during these challenging times, we remain committed to investing in Guinea. The new power plant is an important investment as it enables us to both decrease greenhouse gas emissions and provide sustainable power generation for our Lefa mine. We are looking forward to working with SUMEC and Hyundai to achieve this project.”

Nordgold acquired the Lefa mine in 2010, with annual gold output almost trebling since, according to the company. The mine, a conventional modern open-pit operation with three major mining areas and several smaller, higher grade satellite pits providing additional ore feed for the mill, produced 189,800 oz of gold in 2019.

Last year, Nord Gold the company did its climate change objectives no harm after entering into an exclusive agreement with Total Eren, an independent power producer specialised in renewable energies, and Africa Energy Management Platform, its strategic development partner, to construct a 13 MW solar photovoltaic power plant for its Bissa and Bouly gold mines in Burkina Faso.

Mining the energy transition and digital transformation opportunities

The mining industry is often associated with massive pits either excavated into the ground or underneath the surface, writes Andrew Berryman, President – Mining, Minerals and Metals Services, Worley.

Concern about the environmental impact of extracting minerals has existed for some time and shows no sign of abating. Despite big strides in technology, according to the World Bank, over 11% of global energy consumption comes from the mining, minerals and metals value chain. Changing this demands a serious rethink of the way minerals and metals are processed and mined.

But the challenges do not end there. The scrutiny on mining is as broad as it is concentrated, picking apart everything from corporate stewardship to the commodity mix. Shareholders are demanding better returns on less capital with a smaller environmental footprint.

The winds of change have hit mining, but blustery conditions are not always a bad thing.

The energy transition

The temptation is to jump straight to the conclusion that the energy transition is an existential threat to an emissions-intensive industry. After all, meeting the goals of the Paris Agreement depends on retiring carbon-intensive activities, doesn’t it?

It does, however, impact the movement towards low emissions technologies, such as battery storage, electrification, microgrids, wind and solar power, the mining industry is required to provide the materials needed for this shift.

As we head down the electrification and energy storage path, a different mineral mix will be required.

Many minerals will be needed for applications in the energy transition that we cannot even foresee yet.

The minerals of the low emissions future include lithium, cobalt, iron ore, manganese, aluminium, nickel, lead and graphite. But the single most important mineral that will enable electrification and electron mobility is copper. This element is critical in low emission and electric vehicles, energy transmission and storage and renewable energy technologies that harness the sun and the wind.

So, we know which minerals we need. How do we access and process them responsibly?

Understanding that mining underpins the fate of the planet, we need to consider less energy intensive ways of extracting and processing these minerals. We also need to power the process with energy that comes from renewable sources.

Our customers have growing demand for our new energy expertise to establish affordable, reliable power to these mine sites with technology at the forefront of the power sector. Technology is the biggest enabler to make the energy transition a commercially viable pathway. It is also a key ingredient to developing remote regional areas that are adjacent to mining provinces.

Throw in the digital transformation

It is offering opportunities for the progressive thinkers and grey hairs for the hesitant. Like the energy transition, digital transformation will enable some companies to evolve into mining behemoths and others to inadvertently plot their own downfall through inaction.

In spite of positive statements about digital, investment hasn’t always backed up the excitement. It is the adage of: you don’t know what you don’t know. Plus, while it pays off in the long term, innovation is time-consuming and requires change, so quantifying investment cost is hard, and returns are slow.

The industry needs to see technology as the glue that joins all elements of the physical entity, the data, knowledge components and the people who envision, create, build, test and operate the facility. There is no other glue that can stick these things together and being integrated and working together is essential for success.

Technology is already at the stage where we can tap into a virtual world and use digital twinning to build and view an end result. New parts or facilities can be incorporated into the existing world to view, test and optimise the blend of components, as well as the processes and systems used to create and operate the facility. All this can be envisaged before even committing to the development of a project.

This technology can help the industry make better investment and operating decisions and improve process controls prior to Final Investment Decision (FID). This also means the probable outcomes of embracing technology, and predicting a balanced, safe, net-zero future, can be debated as part of the FID.

Once a facility is up and running, technology also enables you to monitor its operation, make informed decisions with real-time data and allow many tasks to be performed directly by the control system, improving its own performance over time with machine learning. The assessment speed and response time helps you to keep on track, adjust performance outputs and avoid failures, all of which can contribute to a safer, cleaner and greener outcome. But it needs to be incorporated in the design phase, requiring substantial collaboration with the end user.

When the two biggest forces collide

Where there is uncertainty, there is opportunity. Then multiply that as many times as you like, because when the energy transition and digital transformation are considered in the same breath, they will turn mining on its head.

The energy transition cannot happen at the speed we need it to unless we embrace better technologies to design and run mines. At the same time, the need to improve overall sustainability and the social licence to operate remains paramount.

These technologies can assist mining companies to assess, track, collate and present the complex mix of elements that contribute to any sort of environmental or energy goal. Knowing what you have achieved is almost as powerful as achieving it. In a world where knowledge is king, a data-centric solution is key to making the right decisions towards achieving a net-zero impact.

If we can use technology to better analyse orebodies with greater accuracy, it is going to minimise the removal, transport or processing of unusable or low-grade ore, which in turn provides consistency of grade for processing. That means we can run fewer diesel trucks and consistently improve the grade of what we are supplying to the market, resulting in energy savings, potential process improvements and the overall reduction of the carbon footprint.

The opportunities for technological advances in a mining setting are endless. We can now use virtual reality for site training, 3D printing for spare parts manufacturing, predictive analytics platforms to manage safety and conduct aerial inspections of mine sites using drones. These are just some examples of digital mining processes enabling us to optimise mine operations.

This equates to increased safety, productivity and less carbon emissions, and assists the sector to do its bit in reaching the targets of the Paris Agreement and decarbonise the mining process.

Technology is the single biggest enabler of any kind of future that embraces the energy transition.

Mining techniques need to go through a revolution very quickly, but it is heartening to see the early stages of that today. We may look back at what we are doing now as baby steps, but right now, they are quantum leaps.

Nouveau Monde Graphite advances Matawinie electrification strategy

Nouveau Monde Graphite says it has mandated Hydro-Québec to carry out a preliminary project encompassing the development, installation and operation of a 120 kV electrical line that will supply its Matawinie mine site and help the company meet its carbon-neutrality targets.

The goal is to connect the Matawinie project mine and concentrator, in Quebec, Canada, to the power network via a dedicated line that will enable the full electrification of its operations – a world first for an open-pit mine, according to NMG.

During the design phase, the technical, financial and environmental aspects, as well as the construction schedule, will be defined for the line. Hydro-Québec, Canada’s largest electricity producer and one of the world’s largest producers of hydroelectricity, will begin its studies and then issue public communications about the project in the coming months. The 120 kV line is expected to be powered up for the start of the mine’s operations in 2022, NMG said.

NMG said: “With its dedication to stringent sustainable development standards, Nouveau Monde is committed to having both its heavy equipment used for mining operations and its ore concentration and processing activities become fully electric within the first five years of production.”

The planned electrical line will supply power to support this operating model, which will reduce the CO2 emissions of the mine by more than 300,000 t over its lifetime, the company added.

Eric Desaulniers, President and CEO of Nouveau Monde, said: “The preliminary project is an important step in our electrification strategy, as the power line will guarantee a reliable, affordable and dedicated supply of renewable energy. This will give us a competitive advantage that lets us bring to market a product with the smallest possible environmental footprint.”

Desaulniers added that the company is having “positive discussions with commercial partners” to develop an electric fleet that is adapted to its property’s open-pit mining conditions.

The detailed engineering work is progressing in line with these goals.

“From mine planning to shift scheduling that takes into account recharge cycles, Nouveau Monde and its consultants are reinventing industry conventions to create the mine of the future,” it said.

NMG and Hydro-Québec have already partnered to research and develop graphite anode materials used to make lithium-ion batteries. The graphite developer also holds an operating licence from Hydro-Québec’s Center of Excellence in Transportation Electrification and Energy Storage to commercialise battery material technologies and position Quebec in the lithium-ion battery value chain.

Matawinie, in Saint-Michel-des-Saints, Quebec, is expected to start up in 2022. A 2018 feasibility study revealed strong economics for the project, with projected high-quality graphite concentrate of 100,000 t/y over a 26-year period.

FMG strengthens Western Australia hydrogen ties with ATCO agreement

ATCO and Fortescue Metals Group say they have signed an agreement to explore the potential to deploy hydrogen vehicle fuelling infrastructure in Western Australia.

FMG, only last month, agreed to team up with Anglo American, BHP and Hatch to form a Green Hydrogen Consortium looking at ways of using green sources of hydrogen to accelerate decarbonisation within their operations globally.

It also already has a partnership in place with Australia’s CSIRO on hydrogen technologies to support the development of new industries, create jobs and pave the way for low emissions export opportunities for Australia.

ATCO, meanwhile, says it has led the development of renewable hydrogen in Australia, and was the first company to generate hydrogen through electrolysis, powered only by solar.

ATCO and FMG will now collaborate to facilitate the construction and operation of a combined hydrogen production and refuelling facility at ATCO’s existing facility in Jandakot, Perth, with the possibility of wider deployment across the state.

The initial refuelling facility will provide ATCO, Fortescue and agreed third parties with the opportunity to refuel vehicles capable of utilising hydrogen as the primary fuel source, Atco says. This includes a fleet of Toyota Mirai fuel cell electric vehicles that have been made available by Toyota Motor Corp Australia.

“The project will serve as a showcase for hydrogen mobility in the state and support the transition to the next generation of zero-emission transport,” ATCO said.

ATCO’s Managing Director in Australia, Pat Creaghan, said ATCO is committed to expediting the global transition to a net-zero emissions balance in the future and sees a significant opportunity for hydrogen to play a role in that future.

“ATCO’s Clean Energy Innovation Hub has been generating and testing the use of renewable hydrogen for more than six months in gas blending and power applications. The hub provides a fantastic base from which to partner with Fortescue to contribute to Western Australia’s burgeoning renewable hydrogen industry.”

Building on the knowledge gained through the development and implementation of this hub, ATCO says it is currently conducting a feasibility study – with A$375,000 ($226,148) in funding from WA’s Renewable Hydrogen Fund – into the development of a commercial scale renewable hydrogen production plant.

Fortescue Chief Executive Officer, Elizabeth Gaines, said the miner was committed to working with other organisations to position Australia as a leader in the global hydrogen economy.

“As the world moves towards a lower carbon future, hydrogen has the potential to play a key role in the future energy mix and we want to ensure we remain at the forefront of Australia’s renewable hydrogen industry,” Gaines said.

“Identifying and establishing partnerships is critical to unlocking the future potential of hydrogen and we look forward to working with ATCO to capitalise on the economic opportunities associated with hydrogen and support the development of a competitive hydrogen industry.”

ATCO and Fortescue have sought funding under the State Government’s Renewable Hydrogen Fund to support the development of this infrastructure, and are awaiting the outcome of this submission.

Pacific Equity Partners to power up Zenith Energy

Off-grid power generation specialist Zenith Energy looks like going into private hands after an entity owner by Pacific Equity Partners (PEP) made a bid to acquire the ASX-listed company.

The bid from Elemental Infrastructure BidCo, which has been unanimously recommended by Zenith’s board of directors, values Zenith’s equity at around A$150 million ($98 million) and enterprise value at some $250 million.

It would see all Zenith shareholders receive A$1.01/share in cash, which represents a 45.3% premium to the last closing price of Zenith shares on March 6 of $0.695/share.

Zenith has gained in prominence since becoming a public entity in May 2018. This has seen it deploy several hybrid power solutions including solar and diesel power at gold and base metal operations in remote parts of Australia. Some of its standout work includes a diesel installation at Newmont’s Tanami gold operation in the Northern Territory and a solar project at Independence Group’s Nova nickel-copper-cobalt mine in Western Australia.

Peter Torre, Chairman of Zenith’s Independent Board Committee, said: “Zenith has regularly reviewed opportunities that align with its strategy to maximise shareholder returns. The Zenith Board believes the proposal from Elemental represents an opportunity for shareholders to receive compelling and certain value. The proposal delivers a significant premium and recognises the success of Zenith as a leading provider of reliable energy solutions in the Asia Pacific region.”

Pacific Equity Partners Managing Director, Andrew Charlier, said: “PEP has a strong history in backing management teams in the remote power sector and with the additional capital firepower PEP can bring to Zenith, we are highly optimistic about the company’s future growth.”

Subject to shareholder approval being obtained by Zenith shareholders and the other conditions of the scheme being satisfied, the scheme is expected to be implemented in June 2020.

Trafo devises mobile dry-type power solution for coal mine

In a specialised application on a coal mine, Trafo Power Solutions has supplied a dry-type transformer mounted on a mobile skid.

David Claassen, Managing Director at Trafo Power Solutions, said: “The harsh environment of a coal mine required us to specially design a fit-for-purpose solution.

“The cast-resin dry-type transformer is ideal for the mobile arrangement as it is cooled without oil,” he explained. The absence of oil makes it a safer option in terms of fire hazards, especially on a coal mine.

It is also more environmentally-friendly, as there is no chance of an oil spill, according to the company. The 1,250 kVA dual-MV configuration supplied to this mine allows the unit to be linked up to either 11 kV or 6.6 kV supply.

“The unit was designed for a compact enclosure, while still allowing for sufficient air movement for cooling,” Claassen said. “We provided a unique solution of a cast-resin transformer with Class H insulation rating for both the medium voltage and the low voltage windings.”

This insulation standard ensures the transformer can withstand temperatures of up to 180°C, according to Trafo, with Claassen noting that the enclosure design had to accommodate these heat factors while also preventing the ingress of dust or water.

Special engineering was also applied to building a high level of mechanical rigidity into the transformer itself, as demanded by the regular relocation of the mobile skid. This movement means vibration and other forces must be borne by the equipment without affecting its performance.

Claassen emphasises that Trafo Power Solutions is experienced in providing dry-type transformers in a range of enclosed formats to suit customers’ needs. The inherent safety of these transformers also allows them to be installed in underground mining locations.

“We can provide various dry-type transformer enclosed solutions with a mobile skid, which is a versatile format for a range of mining applications,” he says.

Trafo Power Solution’s track record in cast-resin transformers is based on its local expertise and design capacity, combined with the high quality manufacture of the units by Italy-based TMC Transformers.

Nevada Gold Mines adds natural gas to power remit, mulls solar options

Nevada Gold Mines (NGM) says it has approved the conversion of its TS Coal Power Plant to a dual fuel process, allowing the facility to generate power from natural gas.

This conversion, which will enable the facility to reduce carbon emissions by as much as 50%, is in support of Nevada’s carbon-reduction objectives and is in partnership with Governor Sisolak’s administration, NGM said.

NGM is currently working with the State of Nevada on final permitting to allow construction to begin near the end of 2020, with the goal of final commissioning in the June quarter of 2022.

As part of its overall energy management strategy, NGM is also reviewing the potential for a 200 MW solar facility with battery storage. The intention is to phase construction, initially installing 100 MW that could produce power as early as 2022. A study is currently underway and, once the project is approved, NGM will work with the State of Nevada and the Office of Energy on permitting, it said.

Greg Walker, Executive Managing Director, NGM, said: “Nevada Gold Mines is committed to providing its operations low cost, secure power generation through northeastern Nevada’s power grid now and into the future. The conversion of NGM’s TS Power Plant and the potential for an additional solar power facility illustrates this commitment while reducing the State’s carbon emissions.”

NGM has two power generation facilities in northern Nevada with the TS Power Plant in Dunphy and the Western 102 Power Plant outside of Reno. The TS Power Plant commenced operation in 2008 and has a capacity of 215 MW power generation from its original coal-fired process. The Western 102 Power Plant has a capacity of 115 MW, supplying power from natural gas fired generators and a 1 MW Solar Facility, according to NGM.

Caterpillar, Barloworld to talk up mining equipment and power solutions at Indaba

Caterpillar and its southern Africa dealer, Barloworld Equipment, are set to present a broad range of machines, technology and support services at next week’s Mining Indaba, in Cape Town, South Africa.

The Caterpillar exhibit at Indaba, running from February 3-6, will feature digital displays of electric power generation systems, surface and underground mining equipment, and Cat MineStar™ technology capabilities – ranging from vehicle safety systems, such as operator fatigue monitoring, to production systems using teleremote, semi-autonomous and autonomous machine operation.

Caterpillar has recently introduced several new underground hard-rock mining vehicles in Africa. The new R1700 underground LHD brings the latest technology for semi-autonomous and fully autonomous operation to the region. The loader also delivers more than 30% greater fuel efficiency, 65% more lift and tilt force, and 15 t capacity – 20% more than its predecessor, yet in the same dimensional envelope, according to Cat.

Using MineStar Command for underground, the new R1700 (pictured) can be operated from a remote location to keep miners away from potential hazards, Cat says. “The system also boosts utilisation by allowing immediate entry after blasting and by reducing shift change time to nearly zero.”

In addition to the R1700, Caterpillar has introduced several LHDs and underground trucks equipped with EU Stage V engines and emission controls. “Reducing emissions helps miners improve the underground working environment,” it said. On top of this, and with the goal of zero underground emissions in mind, Caterpillar is continuing to develop the battery-powered R1700 XE.

Erik Elsmark, Region Manager for the Caterpillar Underground Mining Division, said: “Caterpillar and Cat dealers are supporting the whole African continent and all types of underground mining applications – big and small mines and all minerals.

“In the past several months we have delivered machines covering our full product range, demonstrating that we are well positioned to meet our customers’ needs.

“Starting with our AD22 underground articulated truck to our R2900 LHD, our equipment delivers exactly the size class and power needed for the application. With distribution centres in Southern Africa and Middle East and our dealer network in all countries of the African continent, we are able to achieve world-class service.”

The extensive line of Cat surface mining machines and technologies will also be a talking point at the event.

Caterpillar has recently expanded its line of electric drive mining trucks in the past year to include the 794 AC, 796 AC and 798 AC. Recently, a South Africa mining operation took delivery of several 794 AC trucks (pictured above), which have 291 t capacity, the company said. “This model has already proven its high productivity and superior speed on grade in a wide variety of applications,” Cat remarked.

In the Cat drill line, the latest model is the MD6200 rotary blasthole drill, designed as a production drill with the flexibility to do pre-split drilling – all in a package that Caterpillar says is its most transportable rotary drill yet. The MD6200 is designed to perform rotary or DTH drilling in single-pass or multi-pass modes and can drill holes of 127 to 200 mm in diameter, according to Cat.

Cat MineStar Command now includes systems for autonomous operation of mining trucks, semi-autonomous operation of dozers, and semi-autonomous as well as autonomous rotary drills. These systems enhance safety, boost production and lower cost per tonne, Cat says.

Mine power experts will also be on call at the show, with the representatives keen to talk about the ability for Cat generators to deliver reliable, continuous power, temporary power, or a combined heat and power solution. “The Cat team customises and installs systems for every phase of mining,” it said.

Caterpillar says it offers the industry’s widest range of diesel, gas and dual fuel generator sets; automatic transfer switches, and switchgear for seamless integration. Additionally, it offers microgrids, fully-integrated power systems that utilise solar panels, energy storage and monitoring and control systems in conjunction with any configuration of Cat gen sets.

Teck examines solar power options with acquisition of SunMine energy facility in BC

Teck Resources says it has purchased the SunMine solar energy facility in Kimberley, British Columbia, from the City of Kimberley.

SunMine, located on fully reclaimed land at Teck’s former Sullivan Mine site, is a 1.05 MW solar facility that has been operational since 2015. It is the first grid-connected solar facility in the province and the first built on a reclaimed mine site. It also has potential for future expansion, according to Teck.

Don Lindsay, President and CEO of Teck, said: “Our involvement with SunMine is part of our commitment to taking action on climate change, advancing renewable energy development, and supporting the global transition to a low-carbon economy.

“SunMine will help us gain first-hand experience with solar power generation as we advance the use of solar power at other operations.”

Teck has been involved with SunMine from its beginning, having provided the land and site infrastructure for development of the solar facility. Teck’s former Sullivan mine was a major producer of zinc, lead and silver, operating for nearly 100 years before closing in 2001, and close to 1,100 ha of the former mining area has since been reclaimed.

Development of SunMine aligns with Teck’s approach to working with stakeholders to develop post-mining land uses, from wildlife habitat to economic diversification, the company said.

Since 2011, Teck has implemented projects and initiatives to reduce greenhouse gas emissions at its operations by 289,000 t – the equivalent to taking over 88,000 combustion engine cars off the road, according to Teck – and 81% of Teck’s total electricity consumption is from renewable energy sources.

The sale amount is around C$2 million ($1.53 million), equal to the City of Kimberley’s outstanding debt obligation for SunMine, Teck said.