Finding better ways to provide the materials the world needs
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We operate in 35 countries where our 60,000 employees are working to find better ways to provide the materials the world needs
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Continuous improvement and innovation are part of our DNA
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The need for innovation is greater than ever
We supply the metals and minerals used to help the world grow and decarbonise
Iron Ore
The primary raw material used to make steel, which is strong, long-lasting and cost-efficient
Lithium
The lightest of all metals, it is a key element needed for low-carbon technologies
Copper
Tough but malleable, corrosion-resistant and recyclable, and an excellent conductor of heat and transmitter of electricity
Bringing to market materials critical to urbanisation and the transition to a low-carbon economy
Oyu Tolgoi
One of the most modern, safe and sustainable operations in the world
Rincon Project
A long-life, low-cost and low-carbon lithium source
Simandou Project
The world’s largest untapped high-grade iron ore deposit
Providing materials the world needs in a responsible way
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We’re targeting net zero emissions by 2050
Nature solutions
Our nature-based solutions projects complement the work we're doing to reduce our Scope 1 and 2 emissions
Enabling ESG transparency
Our START™ initiative tracks traceability and responsible production of Rio Tinto materials.
We aim to deliver superior returns to our shareholders while safeguarding the environment and meeting our obligations to wider society
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Refuelling the mining industry
How can we power the world’s biggest machines with new fuel solutions?
Forging a low-carbon future
How we're working to decarbonise iron ore and steel
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At our Yarwun Alumina Refinery, we’re building a hydrogen plant and retrofitting existing refinery equipment in a world-first, proof-of-concept project to reduce carbon emissions from the alumina refining process.
The Yarwun Hydrogen Calcination Pilot will demonstrate the viability of using hydrogen in the calcination process, where hydrated alumina is heated to temperatures of up to 1,000 degrees Celsius.
In a A$111 million partnership with Summit Hydrogen Gladstone, a 100% subsidiary of Sumitomo Corporation, and federal government’s Australian Renewable Energy Agency (ARENA) and Central Queensland Hydrogen Hub (CQHH), we’re building a 2.5MW electrolyser on-site to supply hydrogen to the Yarwun refinery, which Sumitomo will operate to supply more than 250 tonnes of hydrogen per year to the refinery.
We’re also retrofitting one of Yarwun’s 4 calciners so it can operate at times with a hydrogen burner.
We expect to produce the equivalent of about 6,000 tonnes of alumina per year while reducing Yarwun’s carbon dioxide emissions by about 3,000 tonnes per year.
Construction began in 2024, and we expect the hydrogen plant and calciner to be operational in H2 2025. If successful, the program could pave the way for global adoption of this technology.
This pilot plant is an important step in testing whether hydrogen can replace natural gas in Queensland alumina refineries. We have put the energy transition at the heart of our business strategy, and this is one of the ways we’re working towards decarbonising our operations. We are proud to be developing this new technology here in Gladstone, in partnership with Sumitomo Corporation, and with support from ARENA.”
- Armando Torres, Rio Tinto Aluminium Pacific Operations Managing Director