Tag Archives: Harold Cline

TOMRA Mining to provide XRT sorting tech for Koura Las Cuevas fluorspar mine

Koura has chosen TOMRA Mining to support its operations at the Las Cuevas fluorspar mine in Mexico, convinced by the superior performance of TOMRA XRT sorters in removing waste from the operation’s feed, TOMRA Mining says.

Commissioning of the new XRT sorters is planned for early 2025.

Koura, Orbia’s Fluor & Energy Materials business and a leading global supplier of high-purity metspar and acid spar products, extracts the raw mineral from the Las Cuevas fluorspar mine in San Luis Potosí, Mexico – one of the world’s largest and most productive fluorspar sources.

Koura has signed a contract with TOMRA Mining to install two X-Ray Transmission (XRT) sorters to significantly reduce silica and calcium carbonate content in its run-of-mine material, making processing more efficient and increasing the quality of its fluorspar product.

As the largest fluorspar producer in the world, responsible for over 20% of global fluorspar supply, Koura’s choice to partner again with TOMRA reflects a decade-long relationship built on technological excellence and dedicated service, TOMRA Mining says.

Koura has been using TOMRA’s Color sorters at its San Luis Potosí processing plant and the Las Cuevas mine to remove calcium carbonate waste from its fluorspar feed. With TOMRA’s XRT sorters, scheduled for installation in late 2024 and commissioning in early 2025, it aims to improve further the efficiency of the process while reducing costs and environmental impact through minimised water and chemical consumption.

Koura turned to TOMRA to address the need to remove silica as well as calcium carbonate from the run-of-mine using less water – a scarce resource in the dry climate of San Luis Potosí – and fewer chemicals, as well as reducing the amount of material going through crushing and grinding.

TOMRA Mining’s XRT sorting technology precisely meets these requirements: the COM Tertiary XRT and COM 1200 XRT 2.0 sorters – for smaller and larger size material respectively – will provide Koura with higher throughput and more efficient silica removal compared with previous generations of sorters and traditional mineral processing technologies, the company says.

“Sensor-based sorting offers an amazing opportunity to remove waste while using fewer resources compared to flotation or media separation. With no water or chemicals needed, it is best in class for addressing our mining challenges,” Amaury Colunga Di Bella (pictured on the left), Surface Operations Director at Orbia, says.

Koura’s decision to select TOMRA’s XRT sorters also reflects the trust built over years of collaboration.

“TOMRA has proven not only the high potential and capabilities of its technology but also the quality of its teams,” Di Bella says. “The attention and responsiveness of TOMRA’s service team are better than competitors’, and its Test Center is staffed with skilled professionals, passionate about showing the true potential of TOMRA’s solutions, and we love this.”

Harold Cline, TOMRA Mining’s North America Sales Manager, says: “We are proud that Koura has reaffirmed its trust in TOMRA Mining with this new agreement, and we look forward to supporting Koura’s ongoing success at Las Cuevas with the same dedication and expertise they have come to expect from us.”

TOMRA continues to build ore sorting Insight across mining space

Some 18 months after launching TOMRA Insight to mining customers, the cloud-based data platform is making inroads across the North American mining sector, Harold Cline and Jordan Rutledge told IM on the side lines of the MINEXCHANGE 2022 SME Annual Conference & Expo in Salt Lake City recently.

TOMRA rolled out the subscription-based service to mining back in late 2020, with one of the early adopters being the Black chrome mine in South Africa, one of two mining projects that form the basis of the Sail Group’s plans for long-term sustainable chrome production.

TOMRA Insight, the company says, enables sorting machine users to improve operational efficiencies through a service that turns these machines into connected devices for the generation of valuable process data.

Cline and Rutledge, both TOMRA Sorting Area Sales Managers for North America, said numerous customers were now taking advantage of TOMRA Insight across the region, with many more interested in leveraging the continuous data streams coming off a web-based portal stored securely in the cloud.

TOMRA’s Harold Cline & Jordan Rutledge

“This is seeing mine managers able to tap into how operations are performing today, while tracking that against performance over the last day, week, month, quarter, etc,” Cline told IM. “With the help of our support network, these operations are able to achieve more consistent performance.”

With more customers signing up to TOMRA Insight and more data being generated, the pair were confident future iterations of the platform would be able to offer machine-learning algorithms that helped, for example, predict failures or highlight potential areas for operational improvements.

At the show, the pair were also highlighting the ongoing demand for TOMRA’s Final Recovery sorter, the COM XRT 300/FR, which, since launch, has been successfully deployed at the Letšeng diamond mine in Lesotho, owned by Gem Diamonds. The solution has gone on to be rolled out at other operations.

The introduction of the COM XRT 300/FR, TOMRA became the first company in the industry able to supply a full diamond recovery solution using XRT technology from 2-100 mm, with the unit delivering concentration factors of up to one million with limited stages and guaranteeing more than 99% diamond recovery, according to the company.

Outside of diamonds and sorter analytics, Cline was keen to talk up demand from the gold sector for the company’s sorters.

One of the key differentiators of its offering to the yellow metal space is the ability to scan the material with a multi-channel laser sensor. In an ore sorting setup that involves both XRT and LASER sensor-based machines, the TOMRA solution can remove particles containing sulphide minerals using XRT and subsequently leverage laser sensors to remove particles containing quartz and calcite.

TOMRA says its segregated option can potentially improve recoveries in quartz-associated gold applications thanks to a laser chute-based machine that analyses rocks from both sides. Other belt-based laser machines can only analyse a maximum of 40% of the rock’s surface, according to TOMRA.

“In the gold scenario, we are using XRT to sense and sort with sulphide minerals as a proxy,” Cline said. “At the same time, our laser scanner allows further separation capabilities through identification of minerals such as quartz and calcite.”

Vista Gold, which is developing the Mt Todd project in Australia, anticipates that this combined solution could eliminate approximately 10% of the run-of-mine feed to the grinding circuit, allowing the company to decrease the grind size and thereby increase recovery of the contained gold.

The COM XRT 300/FR offers a full diamond recovery solution

Cline added: “In North America, we have three projects in the gold space we’re working on at the moment that appreciate our unit’s ability to analyse the whole of the particle through our chute mechanism, as opposed to conveyor-based systems that can only analyse one angle of the particle.”

While TOMRA offers multiple sensors on its units through its modular platform, Rutledge said the company continues to have discussions on combining its solutions with other bulk sorting suppliers to further improve the process, naming prompt gamma neutron activation analysis (PGNAA) technology as one specific area of interest.

“We very often refer clients on to other companies when our solution may not match their brief,” she said. “At the same time, we have done some flowsheet work to include our solution with others currently on the market and believe it is only a matter of time before a combination of the two comes into a flowsheet.”

TOMRA’s SRC ties to open new North America ore sorting markets

TOMRA Sorting Solutions is gearing up for major sensor-based ore sorting orders from the North America mining market after signing a co-operation agreement with the Saskatchewan Research Council (SRC).

The company has won mining work across the globe over the last five or so years, moving from Africa diamond operations to a phosphate mine in Saudia Arabia – its largest installation to date (pictured) – to tin in South America and gold in Australia.

One of its more significant regional wins came in Canada, where it recently received a purchase order from Vital Metals’s Cheetah subsidiary to supply COM Tertiary X-ray Transmission (XRT) 1220/B ore sorting equipment to the Nechalacho rare earth project, in the Northwest Territories.

In announcing the order in January, Vital Metals said: “The ore sorting test work highlighted that the Nechalacho rare earth oxide (REO) project is one of the few and the first REO project to successfully use ore sorting to produce a high grade plus-35% REO concentrate without the use of reagents and water. This will substantially reduce the cost and the lead time to bring the Nechalacho REO project into production.”

Harold Cline, Area Sales Manager, Mining, TOMRA Sorting, said this win was significant as it was the first contract the company had sealed in North America following the agreement with the SRC.

SRC is now offering TOMRA clients sensor-based ore sorting process development work, testing and piloting as part of its full suite of SRC Mining and Energy services. The SRC also plans to expand these services further with the creation of the SRC Minerals Liberation Centre.

Up until recently, TOMRA had to send material from North America mining operations back to its test centre in Germany. While the TOMRA facilities in Europe are world-class, Cline said, having a location in North America could prove decisive when it comes to converting enquiries from miners to contracts.

“SRC was able to provide results to Cheetah in just four weeks,” he told IM on the side lines of the recent SME MineXchange Conference and Expo in Phoenix, Arizona.

This testing turnaround time could help TOMRA grow its mining sales in North America at a time when the region’s gold, industrial minerals, copper and lead-zinc mines are looking into sensor-based ore sorting solutions, according to Cline.