Tag Archives: Sibanye-Stillwater

Resourcing Tomorrow

Major miners join Resourcing Tomorrow lineup

Representatives from the world’s largest mining companies Anglo American, BHP, Glencore, Rio Tinto and Vale have confirmed their attendance for this year’s Resourcing Tomorrow event, in London, event organisers say.

These attendees will join other leading mining companies including AngloGold Ashanti, Antofagasta Minerals, Barrick, B2 Gold, Eldorado Gold, Endeavour Mining, Freeport-McMoRan, Newmont, Sibanye-Stillwater and Teck Resources.

As Europe’s largest mining event, Resourcing Tomorrow: Accelerating the Energy Transition takes place in London on November 28-30 and is poised to be yet another agenda-setting edition for the industry, fostering collaboration and knowledge exchange among professionals in the field, event organisers say.

Resourcing Tomorrow unites all stakeholders in the mining industry, including global mining and energy companies, investors, government delegations, researchers, educators, regulators, suppliers and operators. The conference program will provide 100-plus sessions in which all of the aforementioned miners will participate, giving attendees the opportunity to engage and network with leaders and industry specialists from around the world.

The event will draw participants from more than 100 countries, including Australia, USA, UK, Canada, India, Brazil, South Africa, Ghana, Chile, Nigeria, Peru and Germany, demonstrating its international appeal and the global significance of the mining industry, organisers say.

With the increasing pace of change and emerging technologies in the mining industry, Resourcing Tomorrow will focus on the future of our industry and presents a unique opportunity for international representatives of the world’s leading resource economies to meet, find new partners, discuss current challenges, and share the latest research, technology and best practice.

International Mining is a media sponsor of Resourcing Tomorrow.

JUWI’s renewable rollout in South Africa continues with Sibanye-Stillwater deployment

JUWI Renewable Energies, a leading global solar, wind and hybrid project developer, EPC (engineering, procurement and construction) and operations and maintenance company, has announced that it has 400 MW of EPC projects in advanced stages of development for mines in South Africa.

The news follows the financial close of the 89 MW Castle Wind project by the African Infrastructure Investment Managers (AIIM) Consortium for Sibanye-Stillwater’s mining operations, a project initially developed by JUWI for the South African government’s Renewable Energy Independent Power Producers’ Programme (REI4P). The AIIM Consortium included African Clean Energy Developments as developer and Reatile as investment partner.

“We’re seeing a wave of formal requests for renewable energy projects from South African mines, largely driven by the energy crisis, commercial considerations and decarbonisation targets,” Richard Doyle, Managing Director, JUWI SA, said.

“The right regulation has been needed to translate this demand into actual projects for mines. The amendments to the licence-exemption threshold and ability to wheel electricity are now allowing us to pivot projects initially developed for REI4P, such as the Castle Wind project, into the private sector, making them a reality. This is a significant milestone for our team of experts who work tirelessly to advance the renewable energy transition in Africa.”

Wheeling is the act of transporting electricity from a generator to a remotely located end-user through the grid. With most large mines and energy users in South Africa lacking land for large-scale wind and solar projects, the ability to wheel electricity is essential for self generation, according to JUWI.

Chris Bellingham, Head of Project Development, JUWI, explained: “The ability to wheel power through the network combined with the far lower electricity tariffs of solar and wind projects, incentivises mines to either remotely generate their own electricity or purchase it from remote independent power producers, thereby sourcing generation from sites where the resource is stronger. This is a real win for mines, allowing them to save costs, reduce greenhouse gas emissions, and when used in combination with backup technologies, avoid load shedding.”

Sumeet Ramandh, the project’s Development Manager, said  JUWI initiated the Castle Wind project in 2011 and, although there were extensive delays with the government’s procurement process, it remained dedicated to transforming the site into a notable renewable energy asset for South Africa.

“With the recent regulatory improvements, JUWI took the decision to sell the project to the AIIM Consortium, which secured an Eskom agreement to wheel energy from the wind farm to power Sibanye-Stillwater’s mining operations,” he said.

At the start of the year, JUWI reported that it had 4 GW of renewable energy projects in various stages of development across Africa, with another 1 GW to be initiated in 2023. The company also recently signed an EPC agreement with Pan African Resources to construct a 8.75 MW solar plant for the its Fairview mine.

Rockwell Automation and Energy Drive provide energy, emission savings at Sibanye-Stillwater mine

Rockwell Automation Inc has, as part of an energy-savings-as-a-service partnership, helped reduce emissions and deliver substantial annual energy savings at the Sibanye-Stillwater Driefontein gold mine in South Africa, it says.

Rockwell Automation and Energy Drive, an energy-efficiency specialist with headquarters in Durban, South Africa, recently signed a memorandum of understanding in which they will collaborate on projects designed so that the resulting energy savings offset any investment in technology and systems required to drive the sustainability solutions.

Designed by Energy Drive, the system at the Sibanye-Stillwater mine is central to the new optimised control solution for the mine’s ventilation architecture. The new efficiencies – which have delivered annual energy savings of more than 55 GWh – will help Sibanye-Stillwater address some core goals of its ESG activities.

The ventilation system’s operational parameters have been remodelled to leverage the capabilities of Rockwell Automation’s PowerFlex® 6000T variable frequency drives. Through optimised control of fan speed and air circulation, this new approach has resulted in an average energy saving of 62% in one shaft and 48% in the other, with another shaft soon to be commissioned, according to Rockwell.

Engineers anticipate that the three upgrades will eventually deliver a total energy saving of about 360 GWh over the term of the contract – equivalent to removing 5,000 South African homes from the grid every month. Notably, it will save 379,000 t of carbon over the period, while significantly reducing water and coal consumption.

“We share a common vision to provide the most efficient and sustainable solutions for customers and the environment,” Tom O’Reilly, Global Vice President, Sustainability, at Rockwell Automation, said. “We are excited to address the rapidly growing needs of our customers with this energy-saving-as-a-service partnership, to help them on their journey to greater sustainability and achieving net zero.”

James Hynd, CEO of Energy Drive, added: “Collaboration is at the core of our business, and actualising sustainability is what drives us.”

Describing ‘actualising sustainability’, Hynd explained that a direct result of the energy savings it delivers is the reduction of CO2, which contributes to clients’ sustainability targets, specifically carbon-reduction targets.

Thomas Malomane, Power Control Business manager, Africa, at Rockwell Automation, explained: “A large proportion of global energy is consumed by electric motors, with HVAC applications accounting for a significant part of this. Many motor-based solutions are either running without any form of motor control or are using outdated technology and practices that do not offer contemporary efficiency capabilities. Our PowerFlex range of variable speed drives undergoes continual development to address modern demands and is a core solution for reducing energy consumption across a huge variety of applications globally.”

Keliber to use Metso Outotec’s Planet Positive leaching technology at lithium refinery

Sibanye-Stillwater’s subsidiary Keliber has partnered with Metso Outotec to provide its sustainable soda pressure leaching technology for Keliber’s lithium hydroxide refinery, which will be built in Kokkola, Finland.

Keliber owns the advanced lithium project located in the Kaustinen region of Finland, which intends to be one of the first integrated operations in Europe to sustainably produce battery-grade lithium hydroxide using its own ore. In addition, Metso Outotec will provide key processes for Keliber’s concentrator plant, which will be located on the border of Kaustinen and Kronoby municipalities in Finland.

Following the approval for the Keliber lithium project by Sibanye-Stillwater’s board, as announced on November 28, 2022, the first and biggest technology contract has now been signed. The combined order value is approximately €120 million ($128 million), of which approximately €80 million is committed for the Kokkola lithium hydroxide refinery. The planned production of the lithium hydroxide refinery is 15,000 t/y of lithium hydroxide monohydrate.

Metso Outotec’s scope of delivery consists of the engineering and supply of most of the equipment for the lithium hydroxide refinery, as well as installation and commissioning services and training. For the concentrator plant, Metso Outotec’s scope of delivery includes engineering and supply of all the main equipment.

Hannu Hautala, CEO of Keliber, said: “Metso Outotec’s Planet Positive portfolio, which focuses on the most environmentally-efficient technologies, supports the potential for the Keliber project to be a world-class lithium hydroxide producer, that is among the most sustainable in the world.”

Metso Outotec has developed lithium hard-rock-related technologies for some 20 years, and collaboration with Keliber started already in the early 2000s.

Heikki Pekkarinen, Chief Project Officer, said: “The lithium hydroxide production process has been successfully tested with Keliber’s concentrate in Metso Outotec’s pilot plant during the last few years. Metso Outotec has also provided the basic engineering for the refinery, which has given us a well-based detailed technical and economic performance review of the plant. During the planning and piloting stages, new initiatives were also developed to improve the environmental and production performance of both plants.”

Markku Teräsvasara, President of the Minerals business area at Metso Outotec, said: “We are excited that Metso Outotec has been selected as a partner for Keliber’s world-class concentrator plant and refinery project. Our proprietary soda pressure leaching technology will enable exceptional material and energy efficiency for the lithium hydroxide refinery, contributing to the sustainability and profitability of the whole project.”

Appian continues to flex ‘multi-faceted’ skillset in latest mining deals

Private equity firms might not be the most obvious port of call for companies in need of the technical skillsets to transition ‘projects’ to ‘mines’, but, in recent years, Appian Capital Advisory LLP has shown the industry that it has all the credentials to help with this transition.

The firm, headquartered in London but calling on expertise from across the globe, has just completed divestments of the Santa Rita nickel mine and the Serrote copper mine, both in Brazil.

Sibanye-Stillwater, the purchaser, agreed to pay Appian $1 billion, plus a 5% net smelter return (NSR) royalty over potential future underground production at Santa Rita, for the assets, with the private equity firm, in the process, pocketing a pretty profit.

In 2018, Appian acquired Atlantic Nickel (owner of Santa Rita) out of bankruptcy for $68 million and Mineração Vale Verde, the owner of Serrote, for $40 million.

It reoriented the former large-scale open-pit mine into a much more conservative – and profitable – mine able to produce around 20,000-25,000 t/y of contained nickel sulphide equivalent. It also carried out extensive drilling to showcase its underground potential, prolonging its mine life.

The plans at Serrote, meanwhile, were re-evaluated in a DFS. Having completed project construction and commissioning ahead of schedule and under budget, the mine is now ramping up to nameplate capacity of 20,000 t/y of copper equivalent.

These two divestments represent the fourth and fifth portfolio sales the company completed this year. The others included the sale of its 13.2% interest in West Africa-focused gold company Roxgold to Fortuna Silver Mines, the sale of its 0.28% NSR royalty over the large-scale Caserones copper mine in Chile and the repayment of a royalty Appian held over Peak Resources’ Ngualla rare earth project in Tanzania.

The diversity of these asset exits is indicative of how well-versed mining-focused Appian is in the sector’s ‘hot commodities’, but there is more to appreciate here than purely financial gains and well-timed acquisitions and divestments.

“People know that not all money is created equal,” Michael W Scherb, Founder and CEO of Appian (pictured), told IM. “We have a team that is able to solve specific operational challenges – we can call on specialists to solve problems on the process flowsheet side, for instance – while providing financial advice to avoid expensive streams and set assets up for profitability.”

Scherb’s words are backed up by a solid track record: seven of nine investments it has made have resulted in mine builds. Its divestments have also provided healthy returns.

The company has been able to do this by recruiting industry specialists – mining and finance – and educating them on the facets they need to succeed in both the private equity and mining world.

“People that join Appian need to be multi-faceted,” Scherb said. “We get mining folks to think like investors and vice versa,” he said.

This has seen them build a project review team populated with former consultants and an operations team full of mine personnel with operational experience.

“We then get all personnel to cross-train across these teams to avoid any siloed disciplines,” Scherb explained.

Take Santa Rita as an example of where this expertise paid off.

The company carried out a six-month due diligence process on Santa Rita, which led to the development of a more defensive and low-cost mine plan able to see the asset through nickel price peaks and troughs – in stark contrast to the plan former operator Mirabela Nickel had for the asset.

Among the operating changes implemented were the use of a smaller, locally procured equipment fleet of 40 t trucks (Santa Rita previously used Caterpillar 777 90 t and 785 137 t payload trucks), the use of shorter benches and tighter blasting patterns.

This resulted in better grade and fragmentation control, improving the feed to the crusher.

It also defined a significant underground resource base at the mine, which it will still be leveraged to thanks to the NSR royalty.

Such moves were based on exploiting the nickel sulphides at Santa Rita. This reoriented focus aligned with the industry preference for nickel tied to the battery materials space, which eventually paid off with the amount of interest in the asset.

This blend of technical and financial expertise has served the company – and any company it has an interest in – well. Backed by a long-term investment philosophy where its funds are 12 years in duration, the company can make moves aligned with the realities and timelines associated with turning assets into mines.

The next asset on the Appian books likely to move into construction-ready territory is Kalbar Operations’ Fingerboards mineral sands project, which focuses on the Glenaladale deposit, about 20 km northwest of Bairnsdale in Victoria, Australia.

Scherb said this project will be “build-ready” very soon, explaining that it is currently going through the permitting stage.

The project has the potential to be one of the world’s major producers of zircon, ilmenite, rutile and rare earths, and Kalbar is proposing an investment of over A$200 million ($148 million) in the development of a project able to produce around 575,000 t/y of heavy mineral concentrate over 15-20 years.

Scherb said Appian is keen to further pursue commodities associated with the electrification of industry, but he is aware of the premiums that may come with these deals.

“A lot of money has flooded into the battery metals,” he said. “We can be patient and are starting to look earlier stage in some investments.”

“Earlier stage” still has the potential to be producing in four- or five-year’s time, he clarified.

What’s clear is that the Appian team is gaining widespread recognition, with Scherb saying larger mining companies are starting to approach them with proposals that would see Appian gain operational control of assets, realising the firm has the right blend of “operational skill” and “value principles” to succeed.

Having acknowledged a skills shortage across the sector – one Appian is doing its bit to tackle with internship programs with universities in Canada, the UK and Australia – Scherb was confident the company’s talent would be retained and, ultimately, grow.

“In terms of talent retention, we at Appian offer experience of reviewing many different assets at different times in their lifecycle,” he said. “If you’re in-house at a mining company, you run the ruler over the same assets, stress testing them against different scenarios. We offer our teams variety that they cannot get in many places.

“At the same time, our structure means employees invest directly in companies to ensure they are correctly incentivised. This means they get to share in the profits.”

With plans to make one-to-three investments per year – along with the same number of exits – and expectations of committing its latest $775 million fund within the next two quarters, expect to hear more from Appian into 2022.

Generation Mining readies more ‘aggressive’ Marathon PGM-copper project approach

Generation Mining says it is making headway on the development plan for its Marathon palladium-copper project, in north-western Ontario, Canada, having contracted all the major engineering companies for the study.

The study is expected to take around seven to eight months to conclude, with completion expected in early 2021, it said.

G-Mining Services will carry out the mine plan and mineral reserves, infrastructure scope of work and integration of the costs and economic analysis; Ausenco Engineering Canada is progressing the process facility layout and design based on the metallurgical testing that is currently underway at SGS-Lakefield; and Knight-Piesold is to design the tailings facility and open-pit geotechnical engineering. In support of the feasibility study and environment impact interactions, Stantec and Ecometrix P&E Mining Consultants will be responsible for the mineral resource estimate, the company said.

Jamie Levy, President and Chief Executive Officer of Generation Mining, said: “It is a very impressive team that we have assembled for the feasibility study. I am confident that these firms will optimise the value of the Marathon-PGM property and will continue to de-risk the project.

“Our goal is to maximise the net present value of the project while designing an operation which will minimise environmental impacts and provide economic benefits to the local communities. We see the Marathon project being near shovel-ready and well timed to the buoyant palladium market.”

Generation Mining acquired a 51% interest in the Marathon property from Sibanye Stillwater on July 10, 2019, and can increase its interest to 80% by spending $10 million over a period of four years. As of the March quarter, around $4 million of the $10 million has already been spent.

A preliminary economic assessment on Marathon published earlier this year outlined a 14,000 t/d open-pit operation growing to 22,000 t/d after expansion, with an average palladium output of 107,000 oz/y for 14 years. The open-pit mining would be owner-operated using conventional diesel equipment consisting of 254 mm diameter rotary drills on 10 m high benches, 29 cu.m bucket hydraulic excavators, and 221 t off-highway haul trucks and auxiliary equipment, according to the study.

On the feasibility study, Generation Mining said all groups were “integrating well” through good interactions and frequent communications.

“G-Mining will progress pit designs and sequencing that will prioritise the high-grade palladium values for initial production to bring increased palladium production into the first half of the mine life, and increase copper production in the mine’s later years,” the company said.

“Ausenco’s plant design is expected to update the quality work that was done in prior studies with newer technology, which, in turn, will improve concentrator operability and lower capital costs, while increasing palladium recovery without sacrificing copper recovery. This flowsheet is expected to be validated with the current metallurgical test work that is progressing at SGS-Lakefield.

“Knight-Piesold will be updating the past tailings dam designs to reflect current best available practices and technologies.”

Stantec and Ecometrix are involved in the feasibility study team to help facilitate the update of the Environment Impact Study report addendum and to help inform the critical path regulatory approvals process, the company added.

At this early stage, the work on the feasibility study will consider an optimised processing and mine production rate that is “more aggressive” than outlined in the PEA, the company said, contemplating starting at 5 Mt/y and expanding to 8 Mt/y after five years.

New leadership at remote optimisation consulting company

Orway IQ has named former Sibanye-Stillwater employee Marnu Lombaard as its new Chief Executive Officer.

Lombaard, who was named company chief with effect from May, takes over from Fred Kock who filled the role temporarily during the establishment phase of the business development, the company said. Kock remains a Director and Technical Consultant within the business.

Lombaard joins the company from Sibanye-Stillwater’s gold segment where he held the position of Vice President Metallurgy and Surface operations.

“Marnu brings to the position a wealth of knowledge and an array of experiences in the mining industry on a national and global level,” Orway said. “His expertise in technology, global strategy and leadership combined with his strong operational experience in the mining industry, make him ideally suited to accelerate our remote optimisation consulting solution (MillROC) to the mineral processing industry.”

MillROC, a joint venture project between Orway Mineral Consultants and Process IQ, is focused on delivering a remote optimisation consulting service for the mineral processing industry. The cloud-based system is initially focusing on comminution circuits.

“The Orway IQ Board feels Marnu’s vision for our company leverages our strong digital foundations, embraces an innovation mindset, builds on our customer-centric culture and invests in the capability of our people,” the company said.

Condra delivers fully automated overhead crane to South Africa PGM operation

Condra says it has developed fully automated overhead crane capability, with the first machine of this type recently delivered to a South Africa platinum group metals operation.

Marc Kleiner, Condra’s Managing Director, said the company was making full use of new developments in sensors, controls and software to offer a very precise positioning capability in automated applications, with the company aware of an industry shift towards more automated operations.

“This is a capability that we will offer to our customers as an option,” Kleiner said. “We will mainly, but not solely, target the copper mines, especially tankhouse and copper-leaching applications where we have extensive experience.”

Condra’s announcement follows the increasing sophistication of its semi-automated installations, which began in 2003 with a grabbing crane installed at a Durban spice company to pick spices and transport them to specific points for release over hoppers, the company said.

At Sibanye Stillwater’s Marikana platinum mine (owned by Lonmin prior to Sibanye-Stillwater’s acquisition of the company), the fully-automated machine recently installed and commissioned is a 16 t, 16 m-span double-girder electric overhead travelling grabbing crane. It features a customer-specified mechanical rope grab in place of the hydraulic alternative to deliver the improved durability of mechanical operation within Marikana’s abrasive operating environment, Condra said.

There are dual hoists in the design; one to raise and lower the load, the other to mechanically close the grab by means of an internal sheave arrangement to overcome the spring-loaded open state.

Variable speed drives are fitted throughout the crane, delivering maximum speeds of 10 m/min on the lift, and 20 m/min and 40 m/min on the cross-travel and long-travel respectively. Four long-travel motors deliver the materials handling equivalent of four-wheel-drive, enabling automated control of all four wheels for precise crane positioning accurate to within 5 mm.

The crane is fully automated with a manual override, according to Condra, and is programmed by an operator from a remotely located control room, where on-screen monitoring is complemented by visual monitoring capability via closed-circuit television.

Condra’s fully automated option applies across the company’s product offering of single girder and double-girder overhead travelling cranes, gantry cranes, bridge cranes and cantilever cranes for markets worldwide, it said.

These machines go up to heavy duty Class 4, with a focus on product quality and reliability to the standards of ISO, GOST and other internationally recognised quality control bodies, Condra said.

Two lines of hoists are manufactured in several standard models suited to most mining, industrial and general applications, from 1 t to 500 t, with motors bought from external suppliers.

Terra Drone lifts off in South Africa with Sibanye-Stillwater underground demonstration

Terra Drone South Africa has shown off its surveying expertise to Sibanye-Stillwater, with one of its drones successfully navigating a 3m x 3 m tunnel at one of the gold and PGM miner’s underground assets.

A simultaneous localisation and mapping-equipped drone was able to realise “stable automatic navigation” under a “non-GPS environment,” Terra Drone said. The result was the generation of a highly accurate 3D model.

Terra Drone said the many injuries caused by fall of rock incidents in Africa could be somewhat alleviated through the use of accurate surveying and inspection.

“We believe that this technology (drone mapping) will improve safety and work efficiency in Africa’s mining industry in the future,” the company said.

Teppei Seki, Terra Drone Chief Operating Officer, said he was delighted to have carried out such a demonstration with Sibanye-Stillwater. He said the company would now focus on volume calculation by “making 3D measurements of stopes, survey and inspection for ore path and vertical shaft with Sibanye-Stillwater”.

The collaboration is expected to be a “giant step” towards opening up the development of more underground mines in Africa in the future, he added.

Terra Drone is a leading commercial drone technology company that is expanding. It has a branch in South Africa along with nine others in the world covering mining, oil & gas and electricity solutions.

DRDGOLD completes WRTRP acquisition, welcomes Sibanye-Stillwater as shareholder

DRDGOLD has completed the acquisition of Sibanye-Stillwater’s West Rand Tailings Retreatment Project (WRTRP) assets in South Africa, over nine months since the deal was initially announced.

Niël Pretorius, DRDGOLD CEO, said the acquisition was key to the company’s growth strategy, increasing its gold reserves by 90% to 5.75 million ounces.

“The way is now clear for us to expedite phase one of our phased plan for the development of WRTRP, to be known going forward as Far West Gold Recoveries,” he said.

“Phase one involves the upgrading of the Driefontein 2 plant to process tailings from the Driefontein 5 dump at a rate of between 400,000 and 600 000 tonnes per month and depositing the residue on the Driefontein 4 tailings dam.”

DRDGOLD has secured a R300 million ($22.6 million) revolving credit facility from a South African financial institution for phase one, and confirmed orders for most of the long-lead items, according to Pretorius. This is all geared towards production in the March quarter of 2019.

Sibanye-Stillwater now holds 38.05% of DRDGOLD and is entitled to exercise – within 24 months – an option for cash to increase its shareholding by up to 50.1%.