Ioneer (ASX:INR) grants sulphuric acid plant deal to DuPont clean technologies

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Ioneer (ASX:INR) grants sulphuric acid plant deal to DuPont clean technologies

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 Ioneer (ASX:INR) grants sulphuric acid plant deal to DuPont clean technologies
Image source: © Malpetr |

Lithium boron supplier Ioneer Ltd (ASX:INR) has granted DuPont Clean Technologies (DuPont) a license, engineering and supply contract for proprietary equipment to planned sulphuric acid plant at its Rhyolite Ridge Lithium-Boron Project in Nevada, US.


  • Ioneer grants DuPont Clean Technologies contract for Rhyolite Ridge sulphuric acid plant.
  • DuPont will supply best in class MECS® technology and other equipment under contract.
  • Rhyolite Ridge will produce sulphuric acid for the Lithium leaching process while meeting environmental standards.

DuPont is a specialty technology provider having over 90 years of expertise in providing best-in-class sulphuric acid plant engineering, processes, energy recovery and environmental technologies.  It will work alongside engineering partner SNC-Lavalin to design the plant and provide MECS® sulphuric acid production technology.

The chosen MECS® technology enables superior performance and limits emissions helping operations surpass rigid environmental standards. The Rhyolite Ridge plant will meet NV Class II air quality and water pollution control norms using advanced technologies.

So, DuPont will supply its latest generation MECS® Super GEAR™ catalyst and other critical proprietary equipment. However, DuPont has been awarded a conditional contract on a final investment decision by the INR board.

The plant will produce sulphuric acid, which helps leach lithium and boron from crushed rocks. Once operational, Rhyolite Ridge will produce lithium carbonate, convert battery-grade lithium hydroxide, and produce boric acid.

The project will begin production in H2-2024, only after final approval from the US Department of the Interior (DOI).

Meanwhile, INR shares were spotted trading last at AU$0.650 per share on the ASX.


The Rhyolite Ridge project is a critical operation for INR enabling battery-grade lithium production. Advancing production in a sustainable manner can make it a prominent company in this sector.      


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