Tag Archives: Tungsten

Tungsten West breaks ground at Hemerdon for TOMRA XRT ore sorters

Tungsten West says it has broken ground at its Hemerdon tungsten-tin mine in Devon, England, with the first sod turned for the installation of the TOMRA X-ray Transmission (XRT) sensor-based ore sorters.

This event, the company says, marks another major step in the company’s upgrade and refurbishment plans for the project’s processing plant.

Hemerdon is, Tungsten West says, the third largest tungsten resource globally, as well as being a previously producing mine that was operational from 2015-2018. Tungsten West purchased the Hemerdon Mine in 2019, and has since completed a bankable feasibility study that demonstrated an extensive reserve of approximately 63.3 Mt at 0.18% W and 0.03% Sn, as well as 37.4 Mt of saleable aggregate material. The company estimates that the life of mine is currently 18.5 years with the opportunity to extend this through future investment.

As announced earlier this month, the company took receipt of important long-lead equipment items, including the seven XRT ore sorters, which will make up part of the upgraded equipment the company plans to install into the front end of the processing plant. The XRT ore sorter will substantially improve and streamline operations once production restarts, minimising plant downtime, increasing recovery as well as a host of ESG benefits, it said.

After significant test work, Tungsten West engaged TOMRA to supply the seven units that are required to treat the run of mine throughput. This consists of six duty units and one standby unit. Orders and deposits for these units were placed in 2021 and the units have now been delivered to the UK and await final transfer to Hemerdon where they will be installed in the front end of the processing plant.

Additionally, the company is pleased to announce the appointment of James McFarlane as Managing Director of Tungsten West. McFarlane previously held the position of Technical & Operations Director of the company.

Max Denning, Tungsten West CEO, said: “We are extremely excited to have broken ground at Hemerdon this week, marking an important milestone in the project’s restart. Ensuring the UK and the western hemisphere have got access to two key critical minerals has never been more profound. We are also delighted to announce James as our new Managing Director; his extensive experience will prove invaluable in the company’s development as we move closer to first production at Hemerdon.”

Tungsten West makes EPCM progress at Hemerdon as TOMRA XRT ore sorters hit the road

Tungsten West has named Fairport Engineering Limited as its engineering, procurement and construction management (EPCM) contractor at the Hemerdon tungsten-tin project, in the UK, as well as confirmed it was soon expecting to receive seven X-ray Transmission (XRT) sensor-based ore sorters from TOMRA.

Since successfully listing on the AIM Market of the London Stock Exchange, Tungsten West has been advancing the development of Hemerdon, which is one of the most advanced mining projects in England and is expected to be a key future global supplier of tungsten and tin.

Hemerdon is, Tungsten West says, the third largest tungsten resource globally, as well as being a previously producing mine that was operational from 2015-2018. Tungsten West purchased the Hemerdon Mine in 2019, and has since completed a bankable feasibility study that demonstrated an extensive reserve of approximately 63.3 Mt at 0.18% W and 0.03% Sn, as well as 37.4 Mt of saleable aggregate material. The company estimates that the life of mine is currently 18.5 years with the opportunity to extend this through future investment.

On top of the ore sorters, Tungsten West said the rest of the long-lead items had been ordered and were scheduled for delivery within the company’s timetable. It plans to recommence mining this year.

The upgrade and refurbishment of the existing processing plant at Hemerdon is centred around the optimisation of the existing concentrator circuit as well as the introduction of a new crushing and screening circuit that will then feed into a new XRT ore sorting stage. These upgrades will streamline processing, minimise plant downtime and improve recovery rates, according to the company.

After significant test work, Tungsten West engaged TOMRA to supply the seven units that are required to treat the run of mine throughput. This consists of six duty and one standby units. Orders and deposits for these units were placed in 2021 and the units have now been delivered to the UK and await final transfer to Hemerdon where they will be installed in the front end of the processing plant.

On top of this, six new screens and 11 vibrating pan feeders have been ordered from Vibramech of South Africa at fixed prices. These will replace the existing large screens, which caused the low frequency issues, and were a key contributor to plant downtime under Wolf Minerals – the previous owner of Hemerdon. Delivery is expected in the June quarter of 2022.

Max Denning, Tungsten West CEO, said: “We are extremely pleased with progress at site, particularly the onboarding of Fairport Engineering to undertake the detailed design and construction of the project. We are looking forward to working with Fairport as we move towards restarting full production at Hemerdon, with a substantially improved processing route, through the introduction of XRT ore sorting and upgraded processing equipment. The company has assembled a strong projects and operations team, and we remain confident in our progress.”

Gekko to build tungsten ore processing plant for Dolphin Mine re-development

Gekko Systems says it has executed a construction contract with Group 6 Metals Limited for the design, procurement, construction and commissioning of the processing plant and related facilities for the redevelopment of G6M’s 100% owned Dolphin Mine, located on King Island, Tasmania.

The contract, which has a value of approximately A$49 million ($35 million), anticipates the commissioning of the facilities in the March quarter of 2023. Based on this timing the first shipment of ore from the Dolphin mine to customers will also occur during the three-month period.

Gekko has been engaged with G6M (formerly King Island Scheelite) over the last three years and, together, the companies have formulated the flowsheet which was developed after extensive independent test work at the ALS laboratory undertaken on behalf of G6M in Burnie, Tasmania.

Following the execution of the contract, G6M is scheduled to commence earthworks early in the March quarter of 2022 in preparation of the civil works commencing soon thereafter.

Group 6 Metals Executive Chairman, Johann Jacobs, said: “We have successfully worked very closely with Gekko over a number of years, which has culminated in us being able to execute this substantial contract so soon after completion of the financing of the project. We look forward to continuing our working relationship with Gekko to ensure a quality facility that is completed on time and within budget.”

Chair of Gekko Systems, Elizabeth Lewis-Gray, added: “This is a critical resource development and an important project for regional Tasmania and Victoria. The team at Gekko are proud to have the opportunity to collaborate on and deliver a quality, locally designed and built process plant solution for Group 6 Metals.”

An October presentation from King Island Scheelite outlined a 400,000 t/y ore operation, producing 275,000 metric tonne units of tungsten oxide.

Tungsten West set to bring Hemerdon tungsten-tin mine back into production

Tungsten West, the mining company focused on recommencing production at the Hemerdon tungsten and tin mine in Devon, England, has announced its intention to proceed with an initial public offering on London’s AIM market.

The company has conditionally raised £39 million ($53 million) before expenses, with plans to debut on the bourse on October 21 with a market capitalisation of approximately £106.2 million.

The net proceeds of the offer, together with the $49 million project financing from a fund managed by Orion Resource Partners, will be used to, among other things, execute the planned capital expenditure and corporate commitments of £44.6 million for improvement works at the Hemerdon Mine, bringing it back into commercial production.

Hemerdon is, Tungsten West says, the third largest tungsten resource globally, as well as being a previously producing mine that was operational from 2015-2018. Tungsten West purchased the Hemerdon Mine in 2019, and has since completed a bankable feasibility study that demonstrated an extensive reserve of approximately 63.3 Mt at 0.18% W and 0.03% Sn, as well as 37.4 Mt of saleable aggregate material. The company estimates that the life of mine is currently 18.5 years with the opportunity to extend this through future investment.

The mine already has the majority of its infrastructure in place, with previous owner Wolf Minerals Ltd having invested over £170 million into the development of the mine and its processing facilities, which include an open-pit mine, mineral processing facility and mine waste facility, the company says. With a substantial amount of existing infrastructure, the development costs associated with re-starting the mine are estimated to be £44.6 million. This existing infrastructure also means that the rebuild is only expected to take 12 months, with parts of the restart project already underway.

Having acquired the mine out of a receivership process, Tungsten West completed a significant amount of work to enable it to understand and address the issues historically experienced by Wolf Minerals, including a 6,113 m geological exploration drilling program and several technical studies. The company has identified the past issues experienced by Wolf Minerals that required rectifying.

“One of the main issues was a poor mineral process route design, with several items of equipment, particularly in the front end of the plant, causing plant downtime and hindering the recovery of the tungsten and tin minerals,” Tungsten West says. “Tungsten West has therefore designated a material proportion of its rebuild costs to modifying and updating the front-end of the processing plant. This will include replacing the existing crushing circuit with new duty and standby primary jaw crushers and secondary cone crushers.”

In addition, the introduction of X-ray Transmission ore sorting, which the company previously carried out tests on with TOMRA Mining in Germany, substantially reduces processing costs by rejecting around 70% of the ore fed to the sorters, it says.

Further upgrades to the plant commenced by the previous operator will be completed, including the dense media separation feed stockpile where 24 hours of surge capacity will be installed, decoupling the front-end of the plant from the concentrator circuit.

“Through these actions, the company expects plant operating time to improve from circa-53% under previous operatorship to the industry standard of circa-81% under Tungsten West,” Tungsten West says.

Tungsten West has identified further opportunities for by-product cash flow through the production and sale of aggregates. A new aggregate plant will be fed with ore sorter rejects and with the waste streams from the processing plant. The business plan is to sell to local aggregate consumers, such as GRS, providing them with a stable, long-term and sustainable source of these materials.

The company says it has implemented a number of initiatives to ensure a minimal impact on the surrounding environment and local community. These include optimising the plants low frequency noise to ensure minimal environmental impact and a fully cash funded £13.2 million restoration bond.

Max Denning, CEO of Tungsten West, says: “With the proposed £39 million raise announced today, and the £36 million funding package from Orion, we will be fully funded for the development of Hemerdon back into production. We look forward to welcoming new investors into this compelling business and working with all our stakeholders to ensure that the newly reinvigorated Hemerdon mine is a beacon of mining excellence in the UK.”

Almonty aims for ‘carbon neutrality’ at Sandong molybdenum mine

Almonty Industries is expanding its current environmental, social and governance (ESG) program at its Panasqueira mine in Portugal and at its Sangdong project (pictured) in South Korea, with the former set to receive a solar facility in the next 12 months and the latter eying up the use of underground electric fleets.

The solar project at Panasqueira, a tungsten mine, will see a 2.52 MW installation implemented over the next 12 months to produce 4.1 million kWh/y of renewable energy, which represents 21.5% of power consumption at the mine.

At the Sangdong tungsten mine, a third-party report will be concluded over the next three months to analyse the asset’s carbon footprint and how best to minimise it. Given the energy from the grid supplied to the Sangdong project is 100% renewable, the company says it has a “unique opportunity” to push towards carbon neutrality at the Korea site. The underground mine is currently under construction.

Lewis Black, Chairman, President and CEO of Almonty, said: “As we transition into the wider financial ETF markets of Asia and Australia, and our visibility continues to increase as a significant producer of the strategic metals of tungsten and molybdenum once Sangdong and Almonty Korea Moly opens, it has become increasingly important to ensure that we are continually reviewing and developing our ESG which sits perfectly in line with the equator principles around which the Sangdong project is being built.”

He added: “The aim for carbon neutrality at Sangdong is potentially achievable once underground electric fleets can maintain a charge for an entire shift, which is estimated to be technically possible within the next 18 months, but we are extremely fortunate that 100% of our energy comes from a renewable source making the target of carbon neutrality achievable.”

SMS group assigned to FEED work at Cinovec lithium project

European Metals Holdings (EMH) has appointed SMS group Process Technologies as the lead engineer for minerals processing and lithium battery-grade chemicals production at the Cinovec project in the Czech Republic.

Cinovec, a joint venture between European Metals (49%) and ČEZ Group (51%, through its subsidiary Severočeské doly), is operated by Geomet. The project has recently received investment of around €29 million ($34 million) of funding from EIT InnoEnergy, the principal facilitator and organiser of the European Battery Alliance, for the project, seeing it through to a construction decision.

Under the agreement, SMS group, a leader in plant construction and mechanical engineering for the technology metals and materials sector, will provide a complete front-end engineering design (FEED) study as the major component of the ongoing definitive feasibility study (DFS) work at Cinovec.

Under the agreement, SMS will provide the following to the Cinovec project:

  • Full process integration from the point of delivery of ore to the underground crusher through to the delivery of finished battery-grade lithium chemicals for battery and cathode manufacturers;
  • The FEED will include all of the process steps – comminution, beneficiation, roasting, leaching and purification;
  • The FEED will encompass both the lithium process flowsheet and the tin/tungsten recovery circuit delivering metal concentrates to refineries; and
  • The FEED is intended to deliver a binding fixed price lump sum turnkey engineering procurement and construction (EPC) contract with associated process guarantee and product specification guarantees for battery-grade lithium chemicals. The combination of these will greatly assist to underwrite project financing from leading European and global financial institutions lending into this new energy electric vehicle-led industrial revolution, European Metals Holdings says.

The FEED study will commence immediately and SMS group is expected to deliver the EPC contract, as the final component part of the Cinovec DFS, by the end of 2021.

Herbert Weissenbaeck, Senior Vice President for Strategic Project Development at SMS group, said: “Having successfully completed thorough technical due diligence, we believe in the compelling value proposition of Geomet’s Cinovec lithium/tin/tungsten project, which is set to become a cornerstone of the e-mobility driven European battery metals landscape. SMS group is delighted to deploy its second-to-none technology metals and materials production know-how and EPC capabilities into this exciting project.”

EMH Executive Chairman, Keith Coughlan, added: “SMS is the ideal engineering partner for the Cinovec project as it is based in neighbouring Germany with a globally-respected process design capability. The appointment of SMS is the culmination of a negotiation and due diligence process that has lasted over a year.

“EMH, Geomet and ČEZ have all been consistently impressed by SMS group’s capabilities and insights into the development of efficient high recovery plants capable of producing very high quality end-products. Successful delivery of the FEED study will provide a gateway to financing institutions and offtakers of the highest quality. We believe that the intended product and process guarantees will greatly enhance the project finance either directly through commercial lenders or through the recently announced collaborative agreement with EIT InnoEnergy.”

A 2019 prefeasibility study on Cinovec outlined a 1.68 Mt/y operation producing 25,267 t of battery-grade lithium hydroxide over a mine life of 21 years. This came with a capital cost of $482.6 million.

Rafaella considers processing options after positive TOMRA XRT ore sorting tests

Sensor-based ore sorting test work from TOMRA Sorting Solutions has shown the potential for lowering the planned capital expenditure and operating costs associated with developing the Santa Comba tungsten-tin project in Galicia, Spain, project owner Rafaella Resources has reported.

The “exceptional” ore sorting results showed a 50% rejection of un-mineralised rock and an approximate doubling of feed grade, which would significantly lower the planned process capex and opex, and enhance process efficiency through a simpler process flowsheet, the company said. The 50% cut in process tonnage also reduces the project’s environmental impact, with a far lower volume of waste generated, lower energy consumption per unit of metal produced and reduced water consumption.

The “Grade Recovery Curve” showed the potential for over 90% tungsten recovery with an increased yield of up to 55% of feed mass, it added, while testing of the low-grade ores showed viable recovery from over 2 Mt of mineralisation not currently factored into the project’s economics.

The program tested two bulk samples selected from assayed drill core crushed to two size groups: +8 mm to -20mm and +20 mm to -40 mm. Sample No. 40 was circa-1,100 kg of average grade ore at 0.15% WO3, while Sample No. 41 was circa-250 kg of low-grade ore at 0.05% WO3.

TOMRA’s conclusion in its report was that “the results from this test work were positive for both sizes and samples. Significant upgrades of WO3, as well as high recoveries, were achieved in all test runs for sample ‘40’ using X-ray Transmission (XRT), while leaving rather low grades for WO3 in the waste fraction. A calculation has shown that a 90% recovery of tungsten can be possible at a waste removal of more than 50%.

“The low-grade sample ’41’ could be upgraded by a factor of 1.7 to 3. For further calculations, a waste grade between 0.025 and 0.030 is achievable.”

The success of the XRT sorting tests allows several mining and process options, Rafaella says, including:

  • Simplification of the process;
  • Bulk ore zone mining to reduce operational costs and maximise ore recovery;
  • In-pit sorting and conveying;
  • Bulk underground mining and sorting of wider ore zones using larger and longer stopes;
  • Separate sorting of sub-grade mineralisation; and
  • Sorting of satellite deposit ores prior to hauling to the process plant.

TOMRA estimates a throughput of 1 Mt/y of feed ore and circa-500,000 t/y of pre-concentrate would require two XRT units.

Rafaella’s Managing Director, Steven Turner, said the results from the ore sorting test work have exceeded the company’s expectations.

“The clear discrimination between ore-bearing rock and low grade or barren rock has delivered high recoveries and yields allowing for a simpler process plant,” he said. “The benefits of this simplification will be significant once the metallurgical studies are completed. These results are now being fed into the feasibility study that is in the final stages of completion.

“The company looks forward to providing the market with these exciting updates on the fast tracking of its flagship project over the coming weeks.”

Santa Comba is a brownfield project with a 5.1 Mt JORC 2012 compliant near-surface inferred resource at 0.203% WO3 and 0.014% Sn and an underground inferred resource of 234,000 t at 0.95% WO3 and 0.28% Sn.

Minespider wins EIT Raw Materials funding for supply chain transparency app

Minespider, a blockchain protocol for responsible mineral tracking, has been awarded a grant of over €180,000 ($213,732) from the EIT Raw Materials Booster Programme.

The program aims to support start-ups and SMEs in creating innovative products and services that will positively impact the raw materials sector, according to Minespider.

The grant will help Minespider develop OreSource, a due diligence product that helps mines and smelters capture key information that importers in the European Union need to comply with EU Conflict Mineral Regulation. The regulation, which comes into force in January 2021, requires EU importers of 3TG (tin, tungsten, tantalum and gold) to perform due diligence to determine whether their material comes from a conflict affected or high-risk area.

Minespider Founder and CEO, Nathan Williams, said: “European importers need to have better access to data to operate in this new regulatory environment. They require certain data to be included with the materials they purchase.”

The OreSource product extends the capabilities of Minespider’s open, public blockchain protocol, which allows companies to track their raw material shipments, demonstrating where the materials come from and the conditions under which they were produced, the company says. This blockchain creates digital certificates that separate data into three different layers, depending on whether the data should be publicly visible, transparent between members of the same supply chain, or private between a company and their customer.

“This allows their clients, including Volkswagen and Google, to share sensitive transparency information with their customers and other supply chain participants securely,” Minespider says.

The OreSource app allows mines and smelters to provide information to distinguish their products from the rest of the market. Mines and smelters who use the app upload key data such as bills of lading, invoices, company policies, and third-party certifications, which are assembled into a digital certificate and linked along the supply chain.

By affixing a QR code to a mineral shipment, or on an invoice, the recipients of the materials have all the data they need to ensure their compliance with the EU regulation, secured on Minespider’s public blockchain protocol, the company claims.

Williams continued: “Responsible producers are often at a disadvantage in the global market. OreSource is a solid first step toward making responsibly sourced material the norm instead of the exception.”

Companies importing material into Europe benefit from this information, as they have all they need to conduct due diligence. “This means they can view transport routes, analyse production site responsibility, and demonstrate a chain of custody for their raw materials,” Minespider says.

OreSource will also offer analytical tools that allow material importers to identify potential conflict areas and other red flags, the company says, enabling them to ask further questions when needed and ensure all of their imports have been sourced responsibly.

Williams concluded: “The EU and other government agencies are spearheading a new global era of sustainable sourcing. OreSource will support these efforts by ensuring that key data from mineral producers is captured in a transparent manner, and communicated along the supply chain. We are moving away from a world of anonymous commodities, to one of trusted products.”

Lost Dutchman Mine ready to tell its metal separation tale

A company out of Arizona, USA, believes it has come up with a density separation technology that could upgrade heavy metal concentrates without the need for water or chemicals.

Lost Dutchman Mine (LDM), named after the legend of a rich Arizona gold deposit discovered by an elusive Dutch prospector, never since located, is the company in question. Being supported along the way by the Centre for Excellence in Mining Innovation (CEMI) out of Sudbury, Ontario, the firm is looking to find a way into the mining sector at a time when environmental, social and governance (ESG) concerns have reached a new high.

Mark Ogram, one of three Co-founders of LDM, explained the company’s aim and name, saying: “We’ve been able to find gold where people could not find it.

“We have now come up with a solution that requires no chemicals or water to purify a gold ore.”

While gold is the company’s initial focus, the process can be applied to most heavy metals including silver, copper and tungsten, according to Ogram. Some encouraging results have also been seen removing sulphides from gold ore ahead of further processing, in addition to ‘cleaning’ coal, he added.

A gravity separation process that uses air flow rather than water to separate these materials by density, the obvious comparisons are with Knelson concentrators or other separation technologies – all of which tend to use water or another medium for their processes. Ogram says Knelson concentrators are also for free gold, not refractory gold, the latter of which the LDM technology can cope with.

allmineral’s allair® technology also comes to mind as a comparison. This is a process that leverages many of the functions of the water-operated alljig® technology but, instead, uses air as the pulsating medium. So far, allair’s applications have been confined to mostly coal and other minerals.

Like many of these technologies, it is feed preparation that will prove decisive for the application of LDM technology, with ore crush size and moisture content the two key factors.

“We don’t think we would need ball mills to get the feed down to the right size,” LDM Co-founder Ken Abbott said. “A standard crushing and screening setup should be suitable.”

While test work to date has been with material in the 30-60 mesh range, Abbott is confident the technology will work with material from 100-200 mesh.

“It will be a little more of a sensitive process, but it does work should people require it,” he said.

When it comes to moisture content, a drying process will most likely be needed ahead of feeding to the LDM unit.

“The material needs to flow freely to work well,” Abbott said.

In-field test work involved the company using a tumble-type continuous screener/dryer to reach the appropriate moisture content, but a more ‘industrial’ process will be required in commercial applications.

The best results are likely to be achieved when both factors are consistent, according to LDM.

“The system requires a steady and uniform distribution in the feed cycle that includes surge capacity and automated material flow to ensure a steady feed rate,” the company says.

Dale A Shay, a consultant with RIMCON advising LDM, said vat leaching operations were already producing material at the appropriate size for the LDM technology to be tested. “They are also reducing the moisture content to an appropriate level,” he said.

Despite this, the company feels tailings applications may be the most suitable place to start with. This harks back to the ESG concerns miners are feeling – some of which revolves around tailings impoundment areas – as well as the fact the ‘conservative’ mining industry is generally more comfortable testing new technologies on material they already consider to be ‘waste’.

For the technology to prove out, the company will have to scale up its testing.

LDM has, to date, carried out benchtop, laboratory scale and in-field tests on low-grade material, but it has only reached a 1 ton (0.9 t) per hour rate.

“We would put in a tonne and get a few grams out,” Ogram said. “That is how we developed the technology.”

Despite there being a linear progression of recoveries from benchtop to lab to the field, LDM will need to go bigger to find the widescale applications it is after.

Yet, its potential entry into the market is well timed.

Removing the use of chemicals and water in a process that will most likely come after initial crushing could prove cost-effective, as well as environmentally sound.

Yes, the air flow component and feed drying will consume power on mine sites, but this ‘upfront’ operating cost will pay off further downstream as not as much material will be transported to make its way down the process flowsheet. It is more likely to go straight to tailings or backfill material feed.

Abbott explains: “The technology drastically reduces the material that will move onto final concentration, which substantially reduces material movement on site.”

For new developments, there is a knock-on benefit for permitting; the regulatory boxes are much more likely to be ticked when the words ‘water’ and ‘cyanide’ are absent from applications.

LDM Co-founder, Wayne Rod, sums this up: “Although from a cost perspective, it is expected to be competitive with other concentration technologies, the real savings will come on the ESG front and being able to reduce any environmental issues you may have.”

This is a message Rod and the rest of the LDM team are taking to the headquarters of major mining companies, where executives and board members are treating ESG challenges like a ‘cost’ they need to reduce to stay viable.

“As that ESG issue becomes even more prevalent, I see technology becoming a much bigger focus area,” Rod says. “Taking water and chemicals out of the concentration process will help alleviate some of that pressure.”

Metso engineering work steers Almonty towards production at Sandong tungsten project

Metso, in the face of COVID-19 restrictions, has kept Almonty Industries’ Sandong tungsten project in South Korea on track, completing and delivering the basic engineering work for the crushing and grinding circuit of the process plant.

Almonty said the work was delivered on May 15 and is now under review by the technical team, with approval expected within two weeks.

The overall process flowsheet with process mass balance, equipment list, plant layout drawings, process control philosophy, control diagrams and general technical information were provided after five months of extensive work by Metso, in collaboration with Almonty’s technical team, it said.

Ore characterisation tests on drop weight, bond mill work index, abrasion and crushability were conducted at the Metso laboratories during 2019 and 2020 in order to determine the physical properties, mineral liberation and comminution indices of the ore, which were used as the basis for the design criteria of the equipment for the Sangdong processing plant, it said.

“The Metso equipment selected for the basic engineering is from the world-class product range, which provides for high availability and low operational costs,” Almonty said.

Almonty’s Chairman, President and CEO, Lewis Black, said: “We appreciate Metso and its specialised professionals for their intensive work and dedication in the past months to produce this meaningful basic engineering output, turning its second-to-none experience and expertise in the mining field to the most optimum design criteria for the equipment and process of the Sangdong plant.

“Despite the hardship set by COVID-19, the timely delivery of Metso’s basic engineering work on these critical processing units and long-lead items, such as crushers and mills, will enable Almonty to meet the critical path timeline of the Sangdong project as proposed for the KfW-IBEX Bank project financing.

“The comprehensive and thorough basic engineering work produced by Metso will surely serve as the basis of attaining the performance criteria of the plant guaranteed by Metso.”

Almonty is currently running a pilot plant at Sandong (pictured) to test out the flowsheet on a much smaller scale, but the aim is to build the beneficiation plant this year before moving into tungsten concentrate powder production in 2022.