Rio Tinto to make low-carbon alumina

According to The Australian Financial Review, global miner Rio Tinto and Japan’s Sumitomo Corporation will build a $111 million world-first hydrogen plant at the Yarwun alumina refinery in Gladstone to help reduce carbon emissions at the energy-intensive facility.
As companies across the world grapple with the problems of reducing the carbon footprint at metal processing facilities, Rio will look into the viability of using hydrogen, instead of natural gas, in the calcination process.
Sumitomo Corporation will own and operate the electrolyser at the Yarwun site and directly supply hydrogen to Rio Tinto. The electrolyser will have a production capacity of more than 250 tonnes of hydrogen annually.

https://www.afr.com/companies/energy/rio-tinto-to-make-low-carbon-alumina-20230711-p5dngp