Tag Archives: Glencore Technology

Lundin Gold receives Jameson Cells for Fruta del Norte expansion

Comminution of minerals, Mine operation news, Mining equipment, Precious metals, , , ,

Lundin Gold’s expansion of the Fruta del Norte gold mine processing plant in Ecuador is on track, with three Jameson flotation cells and a concentrate filter having arrived on site in the September quarter, the company says.

The company plans to spend approximately $36 million to increase plant throughput to 5,000 t/d and improve metallurgical recoveries by around 3%.

The focus of the expansion is on tailings and water reclaim, ultrafine flotation (read: Jameson cells), the addition of a third concentrate filter and plant automation.

The Jameson Cell is an innovative flotation process driven by fluid mechanics, Glencore Technology says. The advantages of modern Jameson Cells are:

  • Consistent fine bubble generation with no external equipment or spargers;
  • Intense mixing with small bubbles achieving rapid flotation without mechanical agitation;
  • High throughput in a small footprint;
  • Froth washing to maximise concentrate grade in a single flotation stage;
  • Fast response and easy control;
  • Steady operation and performance irrespective of changes in feed flow; and
  • No moving parts, simple to install and maintain, excellent availability.

Other notable operations/projects to have recently invested in Jameson Cell technology include Aeris Resources’ Tritton copper operations, Hudbay’s Copper World Complex and South32’s Hermosa project.

In the September quarter, detailed engineering for the processing plant expansion at Fruta del Norte was completed, as was procurement of all major items; and concrete work was completed during the quarter, while structural steel erection was ongoing. As mentioned, the three Jameson cells and the concentrate filter arrived, while the new tailings line was successfully commissioned with completion of the reclaim line expected by the end of November.

The processing plant expansion to 5,000 t/d – mapped out in a December 2023 three-year outlook announcement – is a boost on the 4,200 t/d nameplate capacity. In 2024, gold production is anticipated to come in at 450,000-500,000 oz based on an average throughput rate of 4,500 t/d. This could be followed by production of 475,000-525,000 oz in 2025 and 2026 at the 5,000 t/d rate.

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Freeport’s Atlantic Copper enlists Glencore Technology’s ISACYLE solution for waste recovery project

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Glencore Technology is to help Atlantic Copper, owned by Freeport-McMoRan, to create the first waste recovery plant for metal fractions of e-material in southern Europe.

The ‘CirCular’ project will feature Glencore Technology’s ISACYLE™ technology to process 60,000 t/y of e-material, and is expected to be operational in the March quarter of 2025.

According to Atlantic Copper, the works will begin in September. The company is investing €310 million ($345 million) in the project, which will move Spain from a recycling rate of 50% to 100% of electronic material, Glencore Technology says.

The ISACYCLE-based project will recover, among other metals, copper, gold, silver, platinum, palladium, tin and nickel from what Atlantic Copper describe as waste electrical and electronic equipment or WEEE.

In 2019, Spain generated around 890,000 t of WEEE, of which only around 370,000 t were managed by authorised recyclers. The other 520,000 t of disused electrical and electronic equipment are stored in homes, end up in landfills or are exported to countries where the metals might be recovered in an environmentally unfriendly way, Glencore Technology says.

Atlantic Copper, Spain’s leading copper producer, will use ISACYCLE technology to divert that kind of waste from landfill and instead recover significant value from it.

The CirCular project is aligned with Sustainable Development Goals and with the EU’s Green Deal and the Plan of Reconstruction, as copper is among the key raw materials that Europe will need to achieve that goal of a sustainable, environmentally neutral economy.

Glencore Technology’s Manager for Pyrometallurgy and Hydrometallurgy, Dr Stanko Nikolic, said the project is expected to be the first of many to use the company’s ISACYLE technology, which is a direct evolution from its ISASMELT™ technology.

“ISACYCLE has been purposefully evolved and proven to take residual waste, including e-waste, and transform it into saleable commodities,” he said. “It’s a very scalable technology. This is a project featuring a plant toward the larger scale. But it is also a technology that works in a small scale, ideal for urban utilities and waste processing companies.”

Nikolic said the ISACYCLE technology, on any scale, can virtually eliminate landfill and instead produce recovered metals, a safe slag that can be used as a construction product, energy and clean offgas.

He concluded: “We’re proud to be able to work with such an innovative company as Atlantic Copper. They’re building a major milestone for the region and what will become a showcase for others.”

Chaarat Gold eyes simpler, lower cost processing of Kyzyltash ore with Albion process

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Chaarat Gold has announced the completion of the first phase metallurgical test program performed by SGS Lakefield on its Kyzyltash gold project, in Kyrgyzstan, which showed similar first stage recoveries from both pressure oxidation (POX) and Albion™ technologies.

The project has a current JORC-compliant measured, indicated and inferred sulphide resource of 5.4 Moz of gold at 3.8 g/t Au. Management estimate that the project has the potential to produce approximately 300,000 oz/y of gold subject to the project meeting its feasibility, permitting and development milestones. More than 80,000 metres of drilling have been completed to date on the project.

The Albion process employs ultra-fine grinding followed by aerated cyanide leaching to extract gold while POX uses high-pressure and temperature conditions to oxidise refractory sulphides prior to gold extraction by conventional carbon-in-leach technology. Bio-oxidation (BIOX) test work is ongoing with results expected in the September quarter of 2022. The test work will be analysed in an economic trade-off study comparing the potential processing technologies applicable to the ore with the aim of making a final decision in 2023. Following this, Chaarat will aim to progress towards an updated feasibility study on the Kyzyltash project.

SGS Lakefield performed flotation and oxidative treatment tests on the representative samples of the 2021 Kyzyltash drilling program, with ore shown to be amenable to froth flotation recovering 87-90% of gold with a 23-24% mass pull. The leach recovery for both Albion and POX averaged 80-90% with similar results between the two processes, the company said.

Mike Fraser, Chief Executive Officer of Chaarat, said: “The development of the Kyzyltash project is continuing as planned. These first results of the Kyzyltash metallurgical test work have provided confirmation that the gold is favourably recoverable with various technologies. The fact that the results from the Albion process were similar to POX is very encouraging as Albion could potentially offer a substantially simpler, lower cost means of processing Kyzyltash ore. Further test work to confirm the preferred processing route will enable Chaarat to proceed with an updated feasibility study with the aim of unlocking the significant future value that this project can bring to Chaarat shareholders.”

The Albion process, owned by Glencore Technology, uses a combination of ultrafine grinding and oxidative leaching at atmospheric pressure to work. It also tolerates a more variable feed and lower grade than other processes, according to Glencore Technology, meaning it can make some projects feasible and profitable where alternative technologies could not. The sulphides in the feed are oxidised and valuable metals liberated, with the economic metals recovered by conventional downstream processing. Test work requires only small sample masses with no pilot plant, Glencore Technology says.

Glencore Technology, Global PAM formalise IsaMill agreement in North America

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Glencore Technology has announced what it says is an important formalisation and commitment with Global PAM to deliver services to clients of IsaMill™ technology throughout North America.

Global PAM has significant capabilities in technology commissioning and asset management, according to Glencore Technology.

The company will support Glencore Technology through the installation, commissioning and service of its fine-grinding technology, IsaMill, predominantly in the US and Canada.

Glencore Technology says it has had a long-term relationship with Global PAM and some of the company’s key team members, but elevating to a formal commitment is seen by the company as providing its clients in the region with an alliance partner that is trusted.

Servicing IsaMill for three years, Global PAM has worked with Glencore Technology on installations in Corbin, Teck and Las Bambas operations.

The company has significant experience in stirred mills, SAG and ball mills and is widely respected as a general mill maintenance specialist, according to Glencore Technology.

IsaMill is seeing significant growth in North America, so Glencore Technology is keen to see clients receive
maintenance services from a local and respected provider, it said.

Mike Hourn, Glencore Technology’s General Manager – Business Development, said: “Glencore Technology has had a long-term relationship with Global PAM, and we want to extend this to our IsaMill clients in the region. It gives our clients a highly skilled partner we can trust and who shares our values.”

Tom Shumka, President of Global PAM, said: “We have solid experience in providing a complete mechanical mill inspection of IsaMill applications and we’re extremely impressed with the technology. We’ve delivered full installation and commissioning support throughout all stages of the equipment. So this formalisation is a natural progression for us.”

Global PAM intends to deliver maintenance and operational training for IsaMill applications as well as continuous improvement solutions to allow for improved operations of the fine grinding circuit, adding to its service, engineering and aftermarket scope.

Telson Mining ready to experiment with metallurgical innovations at Campo Morado

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Telson Mining, following a strong quarter of production from the Campo Morado mine, in Guerrero State, Mexico, is making plans to boost throughput and recoveries through the potential use of grinding, leaching and flotation technologies from the likes of Maelgwyn Mineral Services, Core Group and Glencore Technology.

The mine’s throughput averaged out at 58,100 t/mth in the March quarter, with total throughput for the quarter of 174,400 t being 4% higher than the December quarter. Some 11,013 t of zinc concentrate and 1,907 t of lead concentrate was produced over the period, compared with 9,974 t and 1,916 t, respectively, in the previous quarter.

Gold, silver, lead and zinc recoveries all improved, quarter-on-quarter, in the first three months of the year, the company added.

Ralph Shearing, Telson CEO and President, said: “These strong first quarter results continue to reflect our steady progression of improving the throughput and recoveries at Campo Morado. To this end, management intends to initiate a rigorous metallurgical testing program to advance through second phase testing the Leachox™ Process of Maelgwyn Mineral Services and the Albion Process™ of Core Group, both of which returned positive test results in first phase testing.”

He said this metallurgical testing program will also study the ability to increase base metal recoveries at microfine grinding with flotation recovery using Imhoflot Flotation (also Maelgwyn) and Jameson Cell (Glencore Technology) flotation technologies, both designed for such purposes.

“We are confident that additional recovery improvements are available utilising these exciting modern technologies which, if successful, can provide increased revenue streams,” Shearing added.

Maelgwyn’s Leachox Process consists of several Maelgwyn proprietary processes linked together including Imhoflot G-Cell flotation technology, ultra-fine grinding using the Ro-Star mill, Aachen Reactors and Aachen assisted cyanide destruction.

The Albion Process, meanwhile, is a combination of ultrafine grinding and oxidative leaching at atmospheric pressure. The feed to the Albion Process is refractory base or precious metal concentrates, where the sulphides in the feed are oxidised and liberated, allowing the target metals to be recovered by conventional means.

SGS to bring Glencore Technology’s Albion Process testing to Africa mining market

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SGS Minerals is to offer Glencore Technology’s Albion Process™ test work to mining companies in Africa after the two extended an agreement and certification related to the hydrometallurgical process.

While SGS already has a relationship with Glencore Technology through SGS Lakefield – through an agreement signed last year – the extension opens up the potential for more large packages of work of “high relevance and value”, Glencore Technology says.

“For Glencore Technology, it extends further the global reach of Albion Process test work as it has grown 300% in the last 12-24 months and is seen as uniquely viable in terms of capital costs, operational costs and project feasibility,” the company said.

The new test work locations will now include Randberg in South Africa, with other locations being discussed elsewhere around the world, according to Glencore Technology.

The Albion Process uses a combination of ultrafine grinding and oxidative leaching at atmospheric pressure to work. It also tolerates a more variable feed and lower grade than other processes, according to Glencore Technology, meaning it can make some projects feasible and profitable where alternative technologies could not. The sulphides in the feed are oxidised and valuable metals liberated, with the economic metals recovered by conventional downstream processing. Test work requires only small sample masses with no pilot plant, Glencore Technology says.

The process has produced high recoveries in refractory gold and in base metal concentrates at the six Albion Process plants in operation across the globe, according to the company.

Glencore Technology’s Paul Voigt said: “The extension to Africa has been under discussion for quite some time. We know the importance of local contact and context. It’s also part of a wider focus we have for the African continent.”

SGS’ Niels Verbaan, said: “This is a natural and highly relevant extension of our work with Glencore Technology on Albion Process test work. We look forward to a larger global footprint to help operations in Africa and the Americas, especially those with complex mineralogies, to get an objective opinion on process options.”

SGS is the third certified provider of test work, joining Core Resources in Australia and TOMS Institute in Russia.

Glencore Tech draws McArthur River parallels at Ozernoye polymetallic project

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Glencore Technology says it and Hatch are helping the Ozernoye project in Buryatia, Russia, come up with a process flowsheet suited to the complex composition of ore at the polymetallic asset.
The mining and processing operation would produce zinc and lead concentrates.

Ozernoye’s Grigory Koldunov said the company is currently preparing the area for the Ozernoye polymetallic mine and concentrator in the Yeravninsky region, 60 km away from the Sosnovo-Ozerskoye regional centre.

“We’ll start mining works and stripping waste by November. Expected stripping volume by the end of the year will exceed 350 000 m3 of waste,” Koldunov said. In November, the company will begin the construction of temporary roads and a tailings storage facility.

Glencore Technology’s Adam Price said the ore mineralogy at the site was remarkably similar to Glencore’s McArthur River zinc-lead-silver mine, which originally brought about the need to create the IsaMill ultrafine grinding technology (an example pictured) – an innovation that turns 25 this year.

“Ozernoye’s mineralogy is complex, and it’s going to need the right flowsheet to improve the recovery and concentrate quality and therefore ensure the economic viability of the project,” Price said. The fine-grained lead-zinc ore at the Australia operation made for an obvious benchmark, he said.

This year, Ozernoye has been embarking on mining, capital works and construction of infrastructure facilities. Major construction of the plant’s facilities is planned for 2020-2022 and the company plans to reach design capacity of 8 Mt/y in 2024.

In September, Glencore Technology worked with Hatch, AMC and Ozernoye to finish a geotechnical drilling program, test work and analysis. The camp was recommissioned and the company began clearing the site for construction. Capital mine development and drill and blast works have started to provide contractors with structural materials and to begin stripping, according to Glencore Technology.

“But the main challenge with the Ozernoye deposit is the complex composition of the ore,” Glencore Technology said. “The task of the current geotechnical and test work program is to design and develop the flowsheet.”

Glencore’s McArthur River Mine in northern Australia contains a complex ore that remained uneconomical until the IsaMill was created to produce a steep particle size distribution without needing internal screens or closed circuit cyclones, according to Glencore Technology. The horizontal plug-flow design prevented short circuiting and provided for a reliable and easy to operate technology.

The original 1994 IsaMills are still operating at McArthur River Mine, but the IsaMill technology has been refined to occupy a small footprint, very high availability and significant energy efficiency, Glencore Technology says.

SGS Minerals on board with Glencore Technology’s Albion Process

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Glencore Technology and SGS Minerals have announced an agreement and certification that has seen SGS’s Lakefield site in Ontario, Canada, become the latest laboratory to be certified to conduct amenability level Albion Process™ testwork.

SGS, one of the world’s leading inspection, verification, testing and certification companies, has become only the third certified provider of Albion Process testwork, joining Core Resources in Australia and TOMS Institute in Russia, Glencore Technology said.

“SGS is a highly trusted provider of laboratory testwork services and becomes a valuable supplier to Glencore Technology, expanding testwork capability throughout the Americas,” the company said. The lab successfully performed Albion Process testwork on a gold/pyrite concentrate and a copper/gold concentrate as part of this qualification.

The Albion Process is emerging as a competitive proposition in hydrometallurgy, using a combination of ultrafine grinding and oxidative leaching at atmospheric pressure to help extract base or precious metals. The process sees the sulphides in base of precious metal concentrate feeds oxidised and valuable metals liberated, with the economic metals recovered by conventional downstream processing, according to Glencore Technology.

The SGS testwork certification is important to both companies because the correct performance of the testwork is key to the successful full-scale implementation of the Albion Process on which performance guarantees are based, Glencore Technology explained.

“While the number of certified laboratories will expand in other key geographic areas, it will be kept to a relatively small number to maintain quality,” the company added.

Glencore Technology’s Mike Hourn, said: “We are delighted to see SGS Lakefield join the family of laboratories with the capability to perform Albion Process amenability testwork. They’re good at what they do and SGS represents a significant presence for us in the Americas and their network is highly valued by Glencore Technology.”

SGS Lakefield’s Niels Verbaan, said: “SGS is pleased to be accredited by Glencore Technology on Albion Process™ Testwork and looks forward to working with its clients to provide an objective opinion on the available process options.”

Independent analysis presented at the Extraction 2018 conference suggested the Albion Process has much lower capital cost than traditional leaching technologies like pressure oxidation (POx) plants (Clary et al, 2018). It also tolerates a more variable feed and lower grade to work where others may not, according to Glencore Technology. “It can therefore make some projects feasible and profitable where alternative technologies were unable to,” the company said, adding that there are six plants in operation globally treating refractory gold and copper concentrates.

The Lakefield site of SGS Minerals is its centre of excellence for metallurgical and mineralogical testing in the Americas, offering both laboratory and pilot plant services.

Heron’s Woodlawn zinc-copper project ramps up as IsaMill arrives

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Heron Resources’ Woodlawn zinc-copper project in the New South Wales, Australia, is really starting to take shape, with the company taking delivery of an IsaMill™ (pictured) earlier this week.

The mill is an important part of the company’s processing plant, providing the fine grinding capability to reduce the flotation feed to 30 microns in size. It will treat zinc rich reclaimed tailings, as well as polymetallic primary ore in different processing modes.

The 3 MW 10,000 IsaMill comes with an IsaCharger™ media delivery system, as well as commissioning services from Glencore Technology. It will be the 50th M10,000 installation.

Heron’s Managing Director Wayne Taylor said: “The arrival of the IsaMill marks the step change in technology to be applied to the Woodlawn zinc-copper project. This technology only became available after Woodlawn’s former operations (which stopped in 1998) and it enables Heron to reduce the grind size to provide the most effective mineral liberation, allowing for the highest recoveries to our base metal concentrates.”

The IsaMill is manufactured in Germany and first entered commercial use in 2000.

In the meantime, Heron’s EPC contractor, Sedgman, continues to make good progress with overall construction of the project, reporting the development as 62% complete at the end of June.

The project remains on schedule for the commencement of commissioning in the December quarter.

Woodlawn has an annual steady-state production target of some 40,000 tonnes of zinc concentrate, 10,000 t of copper concentrate and 12,000 t of lead concentrate, along with associated gold and silver.