Terres rares : Exploration et production miniére

[energy_isere]

suite du post au dessus.

Critical Metals (NASDAQ: CRML) says the bankable feasibility study (BFS) for its proposed 500,000-tonne-per-annum rare earth operation in southern Greenland is now 70% complete, placing it on track for submission in the fourth quarter this year.

The BFS forms a key part of the company’s development plans for its Tanbreez project, recognized as one of the biggest rare earth projects globally. The resource is estimated at nearly 45 million tonnes, of which 27% are categorized as “heavy” rare earths — minerals highly sought after by Western suppliers for their use in clean energy, defense and other high-tech applications.

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https://www.mining.com/critical-metals- ... ompletion/

[energy_isere]

suite de ce post du 11 aout 2024 : viewtopic.php?p=2396245#p2396245

vidéo de 11 mn sur le gisement de terre rare de Mount Weld en Australie https://www.youtube.com/watch?v=c3Z_k2jfnfo





la page de Lynas sur cette mine de Mount Weld : https://lynasrareearths.com/mt-weld-wes ... stralia-2/

Mt Weld, Western Australia

The Mt Weld rare earths deposit sits in a two billion year old volcanic plug. Our Mt Weld mine is one of the world’s most valuable rare earths deposits, favoured by its high grade and long life. The Mt Weld deposit contains both Light and Heavy Rare Earth elements.

Mt Weld’s high grade and close to surface mineralised zone mean that the mine itself is relatively small and shallow compared to many other mines.

In keeping with our approach to sustainability, Lynas aims to utilise as much of the ore that is removed from the mine pit as possible. Our product range includes over 15 different products and we invest in research and development into new products and new market applications for our products.

Ore mined from the Mt Weld deposit is trucked to our on-site concentration plant. The ore goes through a number of processes – including crushing, grinding, flotation, and filtration – to produce a mixed rare earths concentrate.

The rare earths concentrate is transported in half height containers (called rotainers) to our Kalgoorlie Processing Facility for initial processing or shipped to the Lynas Malaysia refinery for processing and production of finished rare earths products. Read about our Kalgoorlie and Malaysia rare earth processing facilities here (link to Kalgoorlie and Malaysia pages).


Resource and Reserve

On 5 August 2024, Lynas announced a Mt Weld Mineral Resource and Ore Reserve Update*. This included a 92% increase in Mineral Resources^ and a 63% increase in Ore Reserves^^, with a significant increase in contained Heavy Rare Earth mineralisation. As noted in the FY24 Annual Report, the Ore Reserve update will support:

a >35 year mine life at production rates for sufficient concentrate feedstock for production capacity of 7,200 tpa NdPr (Neodymium Praseodymium) oxide finished product; and
a >20 year mine life at expanded production rates for sufficient concentrate feedstock for production capacity of 12,000tpa of NdPr oxide finished product in line with Mt Weld expansion capacity (currently under construction).
The Mt Weld Rare Earth Mineral Resources estimate is now 106.6 million tonnes at an average grade of 4.12% Total Rare Earth Oxide (TREO) for a total of 4.39 million tonnes of contained TREO. A Mineral Resource cut-off grade of 2.5% TREO was applied.
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Mt Weld Expansion Project

In August 2022, Lynas announced an approximately $500m capacity expansion project at the Mt Weld mine and concentration plant to meet accelerating market demand for rare earth materials. You can read the announcement here.

The project will expand Mt Weld’s capacity to produce the feedstock concentrate required for 12,000 tonnes per annum of NdPr finished product in 2024. It includes upscaled processing equipment, efficiency improvements, enhanced sustainability and will provide a platform for further capacity increases. In addition, Lynas will conduct a 2-year exploration program of the Mt Weld resource.

Formal approval of the Minor and Preliminary Works application was received from the Environmental Protection Authority (EPA) in March 2023.