Tag Archives: copper

Ma’aden and Ivanhoe Electric to embark on milestone exploration program in Saudi Arabia

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Saudi Arabian Mining Company (Ma’aden) has finalised its agreement with Ivanhoe Electric Inc (IE) to purchase a 9.9% stake in the company and form a 50/50 joint venture to undertake what it says is one of the largest exploration programs ever conducted.

The deal will provide Ma’aden, through the joint venture, with access to IE’s Typhoon™ geophysical survey technology, which will accelerate the exploration of Saudi Arabia’s lands, estimated to hold $1.3 trillion of untapped minerals, the company says.

The two companies flagged this agreement back in January with a signing at the Future Minerals Forum in Saudi Arabia.

Ma’aden’s exploration program is driven by the Kingdom’s Vision 2030, which positions mining as a third pillar of the Saudi economy. Under its new corporate strategy, Ma’aden aims to grow 10-fold by 2040 and to move into strategic minerals to fuel the growth of downstream industries in the Kingdom.

The joint venture (JV) with Ivanhoe Electric will explore at least 48,500 sq.km of land, covering highly prospective licence areas with potential for major new copper, nickel, gold, silver and other strategic mineral discoveries, Ma’aden says. The JV will deploy IE’s proprietary Typhoon technology and CGI software that, it says, will strengthen Ma’aden’s exploration capabilities and grow its resource base and production pipeline.

As part of the agreement, Ma’aden will acquire approximately 10.2 million common shares in IE, representing 9.9% of Ivanhoe Electric Inc, for $126.5 million with a top-up option to maintain its 9.9% ownership. The JV will deploy $66 million of the $126.5 million to fund exploration activities and the purchase of three new generation Typhoon machines. Ma’aden has also been granted the right to appoint a nominee to the IE board of directors.

The formation of the JV and the acquisition of 9.9% shares in IE will only be effective after fulfilling certain conditions.

Robert Wilt, CEO of Ma’aden, said: “We are launching one of the largest exploration programs in the world in partnership with Ivanhoe Electric. It’s great to see companies like IE recognise the scale of the opportunity here. We have only scratched the surface of the potential in the Kingdom, and we need to explore faster, smarter and cover more ground to meet our long-term growth objectives. IE’s Typhoon technology will enable us to accelerate our exploration efforts by six times, and de-risk and advance the development of a significant exploration hub in the Kingdom. This is going to help put us on track to meet our 10x growth targets and fast track development of the Kingdom’s mineral riches.”

Ivanhoe Executive Chairman, Robert Friedland, added: “We are excited to finalise our transaction terms with Ma’aden and begin the important work of minerals exploration in the Kingdom of Saudi Arabia. Our joint venture will embark on the largest exploration program ever conducted using our highly powerful and disruptive Typhoon geophysical surveying system. With our Typhoon technology, our Computational Geosciences’ machine-based learning software, and the combined talents of our highly experienced team of women and men, we have all the tools necessary to conduct a transformational exploration program for electric and precious metals in the Kingdom of Saudi Arabia. The potential for future discoveries is extraordinary.”

Metso boosts comminution power at Zijin Mining’s Julong copper concentrator

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Metso says it has been awarded an order for key concentrator plant equipment by Zijin Mining Group for its Julong copper project in the Tibetan Autonomous region.

The value of the order is approximately €85 million ($93 million).

The comminution circuit will be one of the highest powered in China, including a Superior™ MKIII primary gyratory crusher, a geared Premier™ SAG mill and gearless mill drive (GMD) Premier ball mill with 24 MW of installed power, as well as four Nordberg® HP900™ cone crushers, Metso says.

To ensure efficient and sustainable concentrate separation, Metso will deliver 24 TankCell® TC630 flotation cells, five HRT Hight Rate Thickeners, and two Larox® FFP2512 filters. Thanks to their superior energy- and water-efficiency, most of the equipment are part of Metso’s Planet Positive offering, the company added.

Xun Fang, Head of Metso’s Minerals Sales in Greater China, said: “We are very pleased to have been chosen as the partner to deliver the concentrator plant equipment for this ambitious project. The Julong copper mine is located on the Qinghai-Tibetan Plateau at an altitude of 5,300 m, one of the highest mining sites in the world. The elevation of the plant places tough requirements for the equipment. This is one of the reasons Zijin Mining chose Metso, as our technology is known for its sustainability, reliability and high performance. The delivery includes a GMD ball mill, the first GMD mill to be delivered to China and the most powerful ball mill ever made. TankCells and High Rate Thickeners to be delivered are high-capacity equipment, reducing embedded carbon and increasing overall plant availability. Two of the thickeners are for tailings and are 100 meters in diameter. In addition, our local service capability is highly appreciated by the customer.”

Foran Mining and Sandvik reveal first battery-electric DD422iE jumbo at CIM 2023

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Foran Mining and Sandvik have unveiled the first Sandvik battery-electric jumbo drill, a DD422iE, to be used at its McIlvenna Bay project in Saskatchewan, Canada, at the CIM 2023 conference in Montreal.

The DD422iE is part of a 20-strong battery-electric vehicle fleet for the project and comes with drilling and bolting capabilities.

When Sandvik announced the fleet order with Foran Mining last year – its largest BEV order at the time. It was to include seven Sandvik 18-t-payload LH518B loaders, six Sandvik 50-t-payload TH550B trucks, four Sandvik DD422iE jumbo drill rigs, two Sandvik DL422iE longhole drills and one Sandvik DS412iE mechanical bolter. Delivery of the equipment was scheduled to begin this year and continue into 2025, Sandvik said.

In the post announcing the milestone BEV drill, Foran said: “The innovative electric DD422IE, with drilling & bolting capabilities, reinforces our commitment to delivering carbon-neutral critical mineral production. As a company, we remain dedicated to developing and implementing eco-friendly solutions that will have a lasting positive impact on the environment and the communities we serve.”

The 2022 feasibility study on McIlvenna Bay outlined a 4,200 t/d operation over an 18.4-year mine life, able to produce an average annual production of 33,000 t of copper-equivalent output over the first 15 years of mine life. By individual metal this equates to 17,600 t of copper, 28,900 t of zinc, 20,000 oz of gold and 486,000 oz of silver.

First Quantum to add to Liebherr T 284 fleet at Sentinel copper mine

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First Quantum Minerals is in the process of bolstering its fleet of Liebherr T 284 trucks at the Sentinel operation in Zambia, in line with a redistribution of loading equipment to better suit working areas at the copper mine.

In the company’s March quarter, Sentinel reported copper production of 36,232 t, 37,177 t lower than the previous quarter due to the intense rainy season, resulting in the accumulation of water in the Stage 1 pit.

Saturated ground conditions significantly impacted mining rates due to poor road conditions and water in the pit prevented access to working faces, particularly in the lower benches of Stage 1, First Quantum said in its March quarter results.

Despite the challenges encountered during this quarter, copper production for 2023 remains unchanged at 260,000-280,000 t as higher feed grades are expected in the second half of the year, with grades showing improvement already in April.

“The current focus on deploying additional dewatering capacity in Stage 1 to regain access to the high-grade ore is already yielding results early in the second (June) quarter,” it said.

The mine plan has been rescheduled, even if total volumes remain substantively the same and higher grade zones will be dispatched across the remaining three quarters of the year, the company noted. This is to be complemented by a change in location of the in-pit ramps to liberate high-grade ore by mining the saddle zones between Stage 1 and Stage 2.

There will also be a redistribution of loading equipment to better suit working areas and truck fleet capacity is planned to increase in the June quarter with the commissioning of an additional Liebherr T 284, followed by two more in the second half of the year.

Sentinel is a leader in electric mining as a long-term user of trolley assist technology with its Komatsu 960E and Liebherr T 284 trucks, which run under trolley using pantographs.

At MINExpo 2021, Liebherr confirmed it would supply a further 11 T 284 trucks to operate on trolley lines at First Quantum Minerals’ Sentinel and Cobre Panama mines with the miner claiming, in the process, the title of the world’s largest ultra-class truck fleet on trolley. Three of these 363-t-payload machines were planned to be deployed at Sentinel, with the remainder at Cobre Panama.

Two Liebherr T 284 trucks with the Trolley Assist System were commissioned at Sentinel copper mine all the way back in 2016 and testing of the trolley solution began in February of 2017, with 12 months allotted for FQM to evaluate the trucks, the trolley and the customer service.

At the end of the trial period, FQM expressed it was pleased with the results of the Trolley Assist System and the performance of the T 284, leading to an order for six more trolley-capable T 284 trucks at Sentinel mine, along with 30-trolley-capable T 284 trucks for Cobre Panama copper mine in Panama, Liebherr explained.

United thinking on mining, water solutions can save money and protect the environment, Worley says

Base metals, Environmental, Mining services, Sustainable mining, Water management, , , , , , , , , , , , ,

Today, the need for extraction and refinement of copper and other transition materials is essential to world development, as we navigate a transition to more sustainable energy technologies, Saleem Varghese and Carola Sepulveda* write. But as its importance has grown, copper ore grades have decreased at a rate of approximately 25% over the last decade – increasing demand pressures on the commodity – meaning miners need to process more material to achieve the same output.

Today’s copper mines also need a lot of water. A 50,000 t/d ore copper mine will consume around 30,000 cu.m/d of fresh water. This isn’t a problem in some geographies, but it’s critical to the viability of operations in some of the most copper-rich regions on earth, such as the Americas.

Copper miners in the Americas are united by the need to secure their water supply, reduce water consumption and manage their environmental impacts. What can they do to overcome these interrelated challenges, while meeting their production targets?

Where are we now?

Mining and processing depend on vast amounts of water, and for South American miners this leads to complications. The copper mines of the Americas are frequently located in arid and mountainous regions where water is scarce. Indeed Chile, a leading copper mining nation, is currently enduring a ‘mega-drought’ of 13 years and counting. Here, water is a national security issue, leaving some rural communities reliant on tankers to supply fresh drinking water.

This importance is recognised by miners as well, with local community impact and water management being the industry’s top ESG risks, concerning 78% and 76% of respondents, respectively, according to research by EY.

Indeed, by 2040, all Chilean copper mines are expected to be in areas suffering from water stress. Likewise, water efficiency is increasingly becoming a serious problem, with the water-energy nexus shifting and water becoming more expensive. For water-intensive mining processes, lack of access and an increasing price per litre can be potentially difficult hurdles to overcome.

For modern copper miners, there is a historic separation between mining and water operations which must be reengineered to improve water access and use. As mines see their speed to market and output slowed due to water stress, there are three key challenges which, if solved, will help the industry as it extracts the materials to electrify the world. Only by managing water and mining operations together and bringing in collaborative expertise, can miners tackle the challenges before them and deliver at pace.

Understanding the three critical factors for mining success

Water management is the key ESG factor copper miners face today, and this manifests in three key issues: one historic, one present and one which poses a challenge now and will only get worse.

The first challenge is securing a reliable water supply.

The second challenge is reducing water consumption and increasing water efficiency, to ease pressure on water supply.

And the third challenge is minimising environmental risks.

Overall, water issues could affect the viability of mining projects in many regions around the world. Mining operations require significant amounts of water for processes including mineral extraction, ore processing, dust suppression and more. However, in many areas such as in Latin America water is becoming scarce due to drought, climate change and overuse.

Supplying modern mines

To supply mines and refining plants, mines have recently moved away from shared groundwater supplies to desalinated water. Desalination is more expensive but offers less impact on local communities and environment. Given that mines in the Americas are usually distant from the coast and at higher altitudes, desalination represents a difficult challenge for engineers to make feasible. Alternatively, to secure groundwater lifting licences, consumption needs to be effectively managed, and any water put back into the environment must be treated effectively.

Solving the supply challenge by altering water consumption

In effect, the first problem, supply, can be eased by tackling the second issue: water consumption. If supply is the historical issue, using water more efficiently to alter consumption is the issue of today. Whether it’s water use in particle flotation or lost in tailings slurries (for transportation and storage), making sure these processes are done as economically, efficiently and sustainably as possible is key. This is where new technologies and solutions come in.

An example of this is seen in the storage of tailings. Where water cost and procurement are not an issue in different locales and climates, the storage of tailings in a slurry form is common. In arid conditions where water resources are strained, the economic sense behind storage slurries evaporates. Slurries not only take water out of the operational system and into a closed storage system (which will need to be replaced), but it also allows the potential for water loss through evaporation and seepage.

Dry storage techniques – which have increased in scale in recent years – are the obvious solution with greater water reclamation from tailings and increased safety in storage. Moreover, high-altitude mines and liquid-based storage pose a potential risk to those downstream, making dry storage safer and more effective.

Copper tailings from an old mine that are deposited between rock berms that help contain the sediment

Another example of reducing consumption can be through greater efficiency when appraising the ores to be processed. This can be done with advanced ore sorting technologies such as those offered by NextOre, a cutting-edge technology able to provide real-time analysis of newly extracted ores. Rather than typical analysis methods which can detect mineral particles at or near the surface of ore, NextOre’s magnetic resonance technology can evaluate and sort much coarser ore with accuracy and speed. This allows miners to selectively remove the waste or lower grade material before it enters the processing plant – ultimately saving water, with only the best ore to be utilised.

A common misconception about water projects is that they are expensive and require significant resources to implement. While water projects can be costly, it is important to consider the long-term benefits that they bring, such as increased water availability, environmental impact mitigation, improved access to clean water for communities, and further growth for industry.

Saving water, and protecting the local environment

The third issue, which is increasing in importance by the day, is managing the risk of localised environmental issues, especially acid mine drainage that can contaminate the natural environment.

This is an issue that is only going to become harder to tackle as the ores we are required to mine become lower grade and the ability to avoid sulphur-forming ores is lost. In this respect, new technologies can help as more challenging ores are treated.

Overall, the challenges faced by the industry cannot be addressed by a single solution, or by siloed teams attacking from all angles. A unified, collaborative approach will be needed for the best results.

The design and implementation of a water management approach should be tailored to the specific mine site needs and context of the community and stakeholders involved. For projects to succeed in the future, they must integrate mining, water and environmental capability under one roof – from front-end studies to delivery, and operations through end-of-life. Miners will benefit from working with a collaborative partner to consider mining operations and water issues holistically, and how new mining technologies can operate synergistically to help tackle these water challenges.

Why internal and external collaboration is key for businesses

The mining industry will struggle to solve its water challenges alone. And it doesn’t need to. The complexity of modern mine operations – and need for diversified expertise – simply reflects the scale of the energy transition, and the need to continuously improve environmental outcomes to maintain the social licence to operate.

The answer is not straightforward and requires a deep understanding of operations, mining, water management and the surrounding community. Collaboration needs to be coordinated to develop and implement real solutions for the enduring issues facing miners.

If done right, copper mining will bring lasting value to communities through low-impact operations that share the benefits of water infrastructure and provide meaningful local economic contributions. This is the responsible way to ensure we deliver the copper our world desperately needs.

*Saleem Varghese is Copper Growth Lead at Worley, while Carola Sepulveda is Water for Mining Lead, Peru, at Worley

Maximising the benefits of sensor-based ore sorting machines

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Ore sorting has been shown to provide both economic and environmental benefits, but many mines are not yet fully utilising this technology, according to HPY Technology.

Yet, the company’s ore sorting machines are providing a breakthrough solution for Fankou, one of Asia’s largest lead and zinc mines, resulting in an annual revenue increase of around $9.22 million.

Located in Renhua County, Shaoguan City, Guangdong Province, Fankou is owned by Shenzhen Zhongjin Lingnan Nonfemet Co Ltd. The mine has been producing lead and zinc for over 60 years. However, with new underground mining processes, such as vertical crater retreat and large blasting, more waste rock is being introduced into the crushing, grinding and flotation processes, resulting in higher production costs and energy consumption.

Furthermore, under the “zero waste” target set by the Environmental Protection Law of China, Fankou’s tailings pond needs to be closed by 2025. As of 2018, the mine’s annual processing capacity was 1.5 Mt, with 600,000 t ending up in the tailings pond. In addition, Fankou’s waste rock piles had reached approximately 2 Mt. With the continuous addition of around 200,000 t/y of waste rock, these piles grew larger. With the pressure to meet the zero waste target, Fankou was under pressure to make a change.

In 2017, Fankou conducted exploratory tests of sensor-based ore sorting machines with Ganzhou HPY Technology Co Ltd. The result of the initial tests showed promise and addressed the problems the mine was beginning to face, according to HPY Technology. As a result, Fankou decided to add HPY Technology’s ore sorting machines to the industrial design plan of their mineral processing plant in 2018, and HPY Technology’s machines were officially added to the plant in 2019.

The Fankou lead-zinc mine currently produces about 1.4 Mt/y of ore, and it is expected that more than 105,000 t of waste rock will be pre-rejected from the raw ore throughout the year. Ore sorting technology can discard a large amount of waste rock from the raw ore before it is fed into the flotation system, reducing the amount of waste rock entering the mill and saving on electricity costs.

Fankou’s mineral processing plant uses four Classic Series P60-X1400 ore sorting machines. The machine processes the particle size range of +12-90 mm, which accounts for about 50% of the raw ore. This accounts for 2,600 t of ore, rejecting 400-500 t/d of waste rock. After pre-concentration, the lead and zinc content in the waste rock are below 0.3%, and the sulphur and iron content is below 3.8%. Therefore, the ore sorting process enriches the ore grade by 1.08% for lead and zinc and 2% for sulphur and iron.

Four Classic Series P60-X1400 ore sorters in Fankou’s mineral processing plant

After sorting the waste rock from the raw ore, this waste rock can be sold as construction aggregate to bring further economic benefits to the Fankou mine. This has also seen the amount of tailings decrease and the service life of the tailings pond extend significantly, resulting in remarkable energy savings and consumption performance, while also enhancing the mine’s societal value, HPY Technology says.

Mr Wang, Project Manager of Fankou Mineral Processing Plant, said: “We are proud to be one of the world’s first lead and zinc mines to utilise ore sorting fully. We see significant economic benefits for using HPY Technology’s ore sorting machine, especially for low-grade mines. China has huge lead and zinc ore reserves, the second largest in the world. But the grade of the deposits is generally low, with many poor and few rich ores. The average grade is about 1.5% for lead and 2.5% for zinc. Reserves with a grade below 5% account for more than 90% of lead ore, and reserves below 8% account for more than 85% of zinc ore. We hope to continue contributing to the mining industry’s progress and are willing to recommend HPY Technology’s ore sorting machine to our peers.”

The Classic Series used in Fankou’s mineral processing plant is a benchmark in the ore sorting industry, according to HPY Technology. This machine uses dual-energy X-ray technology, combined with high-speed air jets to sort ore from waste rock. The X-ray technology penetrates the ore and creates a grayscale image that distinguishes between target and vein minerals. This image is then processed by an artificial intelligence algorithm, which uses the information to accurately sort the ore and waste rock. The Classic Series has undergone numerous iterations, ensuring stable and efficient operation, HPY Technology says. It is currently the most widely used ore sorting machine in China’s mining industry, according to the company.

Fankou Lead-Zinc mine, mineral processing plant

HPY Technology | Fankou lead-zinc mine, mineral processing plant
Machine used Four Classic Series P60-X1400
Processing capacity 2,600 t/d
Particle size +12-90 mm
Concentrated ore grade (Pb+Zn) 12%
Waste rock grade (Pb+Zn) <0.3%
Grinding grade (Pb+Zn) increased by 1.08%
Rejection rate 16-17%

Fankou’s mineral processing plant can save more than $2.9 million/y by using HPY Technology’s ore sorting machines, resulting in an annual profit margin of more than $7.8 million, considering the comprehensive benefits of increased plant capacity, tailings reduction and construction aggregate sales.

In addition to the four Classic Series P60-X1400 in the mineral processing plant, the Construction Materials Plant has three HPY Technology ore sorting machines to process the waste rock from the mineral processing plant and its existing waste rock piles. The waste rock is taken to the construction material plant for another round of sorting, with the remaining waste rock being used for construction aggregates. The three machines at the construction materials plant also process the 2 million cu.m of waste rock initially stockpiled in the tailings pond.

Mr Luo, Project Manager of Solid Waste Treatment, said: “In the past, we could only transport solid waste back to the shaft for filling. After using HPY’s ore sorting machines, we can now sort out all the ore from solid waste and recover the value of the resources. The remaining waste rock can be sold as construction aggregates, which is a win-win solution. Currently, we are also sorting waste rock that was stored before using HPY’s ore sorting machines. The ore grade is about 3%. Sensor-based sorting technology enriches the ore grade to 12-14%. Sorting results show that the rejection rate exceeds 95%. In the global mining industry, Fankou is one the first to successfully apply intelligent ore sorting technology in lead and zinc mines, achieving maximum resource value recovery and is great for the environment.”

According to Mr Luo, waste rock that was initially made into construction aggregates now yields more than 1,500 t/y of lead and zinc metal, which has been able to be recovered through the Construction Materials Plant. In addition, the ore sorting process reduces the waste rock’s sulphur content. This substantially improves the grade of the construction aggregates, increasing its sales price. As a result, the waste rock made into construction aggregates generates about $977,000/y in economic benefits. In addition, the recovered ore generates over $2.8 million/y in benefits.

Fankou has utilised sensor-based ore sorting to its full extent, HPY Technology says, using it during the comminution process to pre-reject waste rock to increase its lead-zinc ore grade. The company also sees benefits from pre-rejected waste rock in reduced costs in its grinding process. With pressure to control the amount of tailings, the pre-rejected waste rock lowers the amount of tailings entering the tailings pond to help the company in its aim of closing the tailings pond in 2025. In addition, sensor-based ore sorting has allowed the company to gain additional revenue through the recovery of lead-zinc from their waste rock piles, while also utilising these piles for construction aggregates. Overall, the introduction of ore sorting has allowed the company to expand its resource recovery. By pre-rejecting and enriching low ore grades, Fankou can now mine areas previously deemed un-mineable due to having low grade ore, allowing them to increase the processing capacity each year.

Fankou lead-zinc mine, Construction Materials Plant

HPY Technology | Fankou lead-zinc mine, Construction Materials Plant
Machine used One Insight Series | Two Classic Series
Concentrated ore grade 12-14%
Waste rock grade Pb 0.04%, Zn 0.10%
Concentrate recovery rate Pb 96.76%, Zn 92.8%
Rejection rate 95%
Enrichment ratio Pb 9.68, Zn 9.28
Particle size +10-50 mm

The Insight Series used in Fankou’s Construction Materials Plant adopts a combined detection method comprised of a VIS HD dual-sided imaging system and X-ray technology, which can be customised according to the physical characteristics of different ores. The machine can collect the ore’s internal and external information simultaneously and with an AI algorithm, which can significantly improve the accuracy of ore sorting and better for sorting complex ores.

Compared with traditional ore sorting machines, which use a belt, the upgraded Insight Series utilises a vibrating feeder and short belt that leads to ore free fall, HPY Technology says. With the optimised mechanical design, the ore falls more evenly, avoiding ore overlap that affects recognition accuracy. In addition, the machine has various feeding widths (1,600 mm, 3,200 mm), which leads to processing capacities of 40-150 t/h (+10 mm-80 mm) to meet the needs of different mines needs during the beneficiation process.

As one of Asia’s largest lead and zinc mines, Fankou has taken steps to maximise the economic value of its process. Through the utilisation of sensor-based ore sorting, the company has seen significant increases in revenue and savings. Having worked with HPY Technology for over five years, Fankou looks to continue this partnership to further the research on the benefits of ore sorting machines. As HPY Technology continues innovating and revolutionising mineral processing, the benefits will only continue to grow, it says.

HPY Technology Co Ltd says it is a leader in the development and manufacture of ore sorting machinery, achieving excellent results in the ore sorting of tungsten, tin, antimony, lead, zinc, copper, molybdenum, gold, phosphate and over 30 other ore types, revolutionising the traditional mineral processing process and significantly promoting the technological progress of the global mining industry. With over 400 machines in use in over 100 mines, the company says it looks to continue revolutionising mineral processing.

Barminco wins A$90 million contract extension at Newcrest’s Red Chris mine

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Perenti subsidiary, Barminco, says it has been awarded a 12-month contract extension at Newcrest Mining’s Red Chris mine in British Columbia, Canada.

Since June 2021, Barminco has continued to progress the development of an underground exploration decline, an essential first stage of works that will provide a platform for future underground exploration activities, and which may also be used to support access to potential block cave workings.

This contract extension enables Barminco to continue underground development works and is expected to deliver approximately A$90 million ($60.4 million) of revenue over the 12-month contract term.

Mark Norwell, Managing Director and CEO of Perenti, said, “Our strategy in North America is to partner with Tier-One operators and long-life assets, where we can add value over the long term. We continue to diligently progress our North American growth strategy and have key executive management personnel based in the region to ensure we develop the right relationships and become engrained within the sector while remaining disciplined in the execution of our strategy.”

Paul Muller, President of Contract Mining, said: “Since mid-2021 our team in North America has worked closely with the Red Chris JV as it transforms the mine into a long life, tier-one underground operation. We have developed very strong relationships with the local communities including a partnership with the Tahltan Nation Development Corporation and are very pleased to be on site at Red Chris for at least the next 12 months.”

An October 2021 prefeasibility study on the Red Chris block cave outlined an initial reserve estimate of 8.1 Moz of gold and 2.2 Mt of copper, with average annual gold production of 158,000 oz and copper production of 48,500 t over the 31-year life of mine.

GR Engineering to design and construct OZ Minerals’ West Musgrave process plant

Base metals, Comminution of minerals, Mineral processing, Mineral project development, Mining services, , , , , , ,

GR Engineering Services says it has entered into two contracts with OZ Minerals Musgrave Operations Pty Ltd, a wholly owned subsidiary of OZ Minerals Limited, for the design and construction works of the West Musgrave mineral processing plant in Western Australia.

GR Engineering has been engaged by the company to provide the following services for the West Musgrave project:

  • Engineering design, drafting, project management and commissioning; and
  • Structural, mechanical, piping, electrical and instrumentation construction works.

GR Engineering’s wholly owned subsidiary, Mipac Pty Ltd, will also be engaged within the GR Engineering scope of work to provide specialist electrical and instrumentation services.

The estimated revenue from the delivery of these contracts will be A$312 million ($211 million) over a two year period.

Tony Patrizi, Managing Director of GR Engineering, said: “We are pleased to have been engaged by OZ Minerals to play a key role in the delivery of the world- class West Musgrave project. This is an important project for GR Engineering as we have worked with OZ Minerals over many years on projects within the OZ Minerals group, including the West Musgrave project, and see this award as a strong endorsement of our proven delivery capabilities.”

Debbie Morrow, Projects Executive for OZ Minerals, added: “We’re delighted to be working with GR Engineering on the design and construction of the minerals processing plant for the West Musgrave project, which is set to be one of the largest, lowest cost, lowest emissions copper-nickel projects.”

The West Musgrave project feasibility study the OZ Minerals Board signed off last year details a 13.5 Mt/y operation with average production of circa-28,000 t/y of nickel and circa-35,000 t/y of copper over a 24-year operating life.

Lundin Mining to acquire majority interest in Caserones copper-molybdenum mine in Chile

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Lundin Mining Corporation has entered into a binding purchase agreement with JX Nippon Mining & Metals Corporation and certain of its subsidiaries to acquire 51% of the issued and outstanding equity of SCM Minera Lumina Copper Chile, a wholly owned subsidiary of JX which operates the Caserones copper-molybdenum mine in Chile.

The transaction will see JX receive upfront cash consideration from Lundin Mining of $800 million. In addition, $150 million in deferred cash consideration will be payable by Lundin Mining in installments over a six-year period following the closing date. Lundin Mining will also have the right to acquire up to an additional 19% interest in Caserones for $350 million over a five-year period commencing on the first anniversary of the date of closing.

This transaction offers Lundin exposure to a major copper mine in Chile, one that boasted a “historical estimate” of 892.1 Mt at an average grade of 0.33% Cu, containing approximately 2.9 Mt of copper in the proven and probable reserve categories and 1,595 Mt at an average grade of 0.29% copper containing 4.583 Mt of copper in the measured and indicated resource categories.

The deal, Lundin says, aligns well with its strategic goals in that it delivers a large-scale, long-life copper operation with favourable cash flow generation. This, it says, complements Lundin Mining’s existing operations and overall copper-dominant portfolio of high-quality base metal mines.

In addition to the potential to expand the known mineralisation through initiating drill programs, Lundin says the proximity of its Candelaria operations (circa-160 km from Caserones) introduces opportunities to realise additional savings and implement effective supply, logistical and management strategies.

Peter Rockandel, CEO of Lundin, said: “Upon closing of the acquisition of Caserones, we add another long-life copper mine of material size and with significant growth potential to our portfolio, in a region in which we have considerable knowledge and experience. The Caserones team has achieved meaningful operational improvements in recent years, and we will work to unlock additional upside through our strong technical resources and existing presence in the region. The initial controlling interest increases our exposure to what we believe is a growing top-tier copper mining district. We retain the option to further increase our ownership over the next few years at an attractive price. The Acquisition further solidifies Lundin Mining’s position as a growing global producer of copper as the world shifts to a lower carbon future.”

Caserones is a significant porphyry copper-molybdenum deposit in the Atacama Region (Region III) of the northern Chilean Andean Cordillera, situated between the Maricunga and El Indio belts and is part of the emerging Vicuña copper district. It is approximately 9 km from the border with Argentina, and at an altitude of approximately 4,500 m above sea level. The operation produces copper and molybdenum concentrates from a traditional open-pit mine and conventional sulphide flotation plant, as well as copper cathode from a dump leach, solvent extraction and electrowinning plant. First copper cathode was produced in 2013, followed by copper and molybdenum concentrates in 2014.

The open-pit operation uses 33 haul trucks loaded by a combination of two electric rope shovels, two hydraulic shovels and two large front-end loaders. The process plant consists of a conventional crush, grind and flotation processing with a nominal capacity of 105,000 t/d, producing both copper in concentrates and molybdenum in concentrates, as well as a solvent extraction and electrowinning plant and leaching facilities for processing oxide and low-grade sulphide ore with a production capacity of 34,500 t/y of cathode. In 2022, the concentrator plant produced 109,100 t of copper in concentrate. In addition, 15,001 t of copper cathodes and 3,100 t of molybdenum in concentrate was produced.

The tailings are managed in two separate facilities. The flotation tailings from the concentrator plant are classified into coarse and fine fractions. The La Brea tailings storage facility, approximately 9 km west of the concentration plant, receives the fines and the coarse fractions are sent to the El Tambo sand stacking facility immediately adjacent to the concentrator plant. Due diligence was performed on the tailings facilities and related infrastructure, led by Lundin Mining’s Technical Services Group.

Epiroc LHDs, trucks and drills set for Kipushi underground project in DRC

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Epiroc says it has won a large order from JCHX Mining and Construction Ltd for equipment to be used at the Kipushi underground project in the Democratic Republic of the Congo.

Kipushi is an underground mine that is reopening under the leadership of Kipushi Corporation, a joint venture between Ivanhoe Mines of Canada and Gécamines, a DRC state-owned mining company.

JCHX, a mining contractor, has ordered several Epiroc loaders, mine trucks and drill rigs, including service support, for use at the zinc, copper, germanium and silver mine in the Haut-Katanga, province in southern DRC. After decades of production, the mine closed for care and maintenance in 1994. Construction started last year to re-open the mine, with late 2024 as target to start production. The mine will be powered by clean, renewable hydro-generated electricity, according to the owners.

The equipment order is valued at about $17 milion and was booked in the March quarter of 2023.

“We look forward to supporting JCHX in making operations at the Kipushi mine as safe and productive as possible,” Helena Hedblom, Epiroc’s President and CEO, says.

Sami Niiranen, President of Epiroc’s Underground division, said: “JCHX has been a customer of Epiroc for many years, both in Africa and Europe, and we are pleased to continue delivering innovative solutions that will help to optimise operations at Kipushi.”

JCHX International Division President, Youcheng Wang, added: “From the group headquarters to the front-line team, Epiroc sets the highest priority on this equipment order, also when it comes to on-site technical support.”

The ordered equipment, manufactured in Sweden, includes Scooptram ST14 loaders, Minetruck MT42 haul trucks, and Simba production drill rigs. The Scooptram and Minetruck machines will be equipped with Epiroc’s telematics system Certiq, which allows for intelligent monitoring of machine performance and productivity in real time, and with Epiroc’s Rig Control System, RCS, which makes them ready for automation and remote control.

Delivery begins shortly and will continue into early 2024.