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Copper’s biggest mystery is finally cracking

Bloomberg News | November 27, 2022 | 10:58 am Suppliers & Equipment USA Copper

Jetti worked with the University of British Columbia to develop a chemical catalyst that breaks through the layer, so that the copper can be released using leaching without the need for high temperatures.

While Jetti’s process is the most advanced, Rio Tinto says it’s also cracked the challenge in lab trials. Rio has been offering its Nuton technology as a sweetener to junior mining companies that it invests in: if the smaller firms successfully develop their mining projects, then Rio will deploy the Nuton process to boost profitability. It’s signed three such deals already this year.

“When you look at the size of the prize, the potential is enormous,” said Adam Burley, who runs the Rio project. “It’s too big to leave on the table.”

Rio wants Nuton to have produced a total of about 500,000 tons of copper by the end of this decade, with hopes that the business may one day produce the annual equivalent of one of the world’s top-five copper mines.

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