Finding better ways to provide the materials the world needs
Our business
We operate in 35 countries where our 60,000 employees are working to find better ways to provide the materials the world needs
Our purpose in action
Continuous improvement and innovation are part of our DNA
Innovation
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
Climate Change
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
Decarbonisation progress update
We have a clear plan on decarbonisation - find out more about our progress
We aim to deliver superior returns to our shareholders while safeguarding the environment and meeting our obligations to wider society
Reports 2024
Download our 2024 suite of reports, including our 2024 Taxes and Royalties Paid Report, detailing $8.4 billion of taxes and royalties paid globally during the year
Get the latest news, stories and updates
Things You Can't Live Without
Our podcast discussing what needs to happen to create a sustainable future for the everyday items we have come to rely on
The 'f' word of innovation
How unlocking innovation requires a change of mindset
Reducing titanium oxide's carbon footprint
Our BlueSmelting technology could drastically reduce carbon emissions during ore processing
Discover more about life at Rio Tinto
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If you want to drive real change, we have just the place to do it
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Aluminium is found in everything from cars to phones. But one of the challenges of producing this essential material responsibly is finding ways to decarbonise the process.
Part of the reason is creating alumina – the main ingredient in aluminium – takes a lot of energy, which in turn creates greenhouse gas emissions. We know new technologies will be essential to helping us reduce our emissions, but many haven’t been proven. And some not yet discovered.
One possible solution we’re testing is whether renewable hydrogen can be used in alumina refining – and other industries too. In partnership with Sumitomo Corporation and the Australian Renewable Energy Agency, we’re building a first-of-a-kind hydrogen pilot plant at our Yarwun alumina refinery in Gladstone, Queensland, Australia.
We engage with investor and civil society organisations on our approach to climate advocacy to support the decarbonisation of our operations.
To support this approach, and in line with our commitment to transparency, we are publishing a series of briefing papers on our key emission sources, efforts to decarbonise specific assets and how policy-settings can support our Scope 1 and 2 emissions reduction targets which are aligned with the goal of limiting global warming to 1.5°C.
Here are 5 reasons why hydrogen could help reduce industry emissions:
When you burn hydrogen, you get steam. Nothing else.
Steam can be captured and used in other parts of the refining process. Then, it can be condensed into water, which can be recycled to create more hydrogen. That’s something we’re looking at as part of this study. It’s important because creating 1kg of hydrogen takes 9kgs of water (if, like your friendly editor here, you didn’t study chemistry: it’s the H in H2O). So, creating truly green hydrogen needs renewable energy AND a renewable water supply.
Part of the process of extracting alumina from bauxite involves burning the mineral at around 1000 degrees Celsius in huge heaters, known as calciners. And there are only a few ways you can achieve the temperature needed. Hydrogen’s properties make it well suited to these kinds of industrial processes, like alumina refining.
For hydrogen to be widely adopted, it also needs to be a cost-efficient solution. One of the ways we can make it more affordable for wider industrial use is by developing technologies that can be built into existing infrastructure, avoiding the need to build new equipment or making large-scale (expensive) modifications. Our engineering teams are looking at how we may be able to do that.
Solar and wind power can be used to drive the processes behind creating renewable hydrogen.
The project will consist of construction of a 2.5MW on-site electrolyser to supply green hydrogen to the Yarwun refinery and a retrofit of one of Yarwun’s four calciners so it can operate at times with a hydrogen burner. If successful, the program could pave the way for adoption of the technology at scale globally.
The trial is expected 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.
Converting the entire plant to green hydrogen could reduce emissions by 500,000 tonnes per year, which is the equivalent of taking about 109,000 internal combustion engine cars off the road.
Construction will start in 2024. The hydrogen plant and calciner are expected to be in operation by 2025.
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With the exception of the use of cookies, Rio Tinto generally does not seek to collect personal data through this website. However if you choose to provide personal data to Rio Tinto through this website (for example, by sending us an email), we will process that personal data to answer your query and if relevant, to manage our business relationship with you or your company. We won't process that personal data for other purposes except where required to meet our legal obligations or otherwise as authorised by law and notified to you.
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As some data privacy laws regulate IP addresses and other information collected through the use of cookies as personal data, Rio Tinto’s processing of such personal data needs to comply with its Data Privacy Standard (see Part 1 of our Privacy Policy), and also applicable data privacy laws.
With the exception of the use of cookies (explained below), Rio Tinto generally does not seek to collect personal data through this website. However if you choose to provide personal data to Rio Tinto through this website (for example, by sending us an email), we will process that personal data to answer your query and if relevant, to manage our business relationship with you or your company. We won't process that personal data for other purposes except where required to meet our legal obligations or otherwise as authorised by law and notified to you.
Part 1 of this Privacy Policy contains the Rio Tinto Data Privacy Standard, which provides an overview of Rio Tinto’s approach to personal data processing. There is additional information in the appendices to the Data Privacy Standard, including information about disclosures, trans-border data transfers, the exercise of data subject rights and how to make complaints or obtain further information relating to Rio Tinto’s processing of your personal data.
If you choose to subscribe to our media releases or other communications, you can unsubscribe at any time (by following the instructions in the email or by contacting us at digital.comms@riotinto.com).
With your consent, our website uses cookies to distinguish you from other users of our website. This helps us to provide you with a good experience when you browse our website and also allows us to improve our site.
A cookie is a small file of letters and numbers that we store on your browser or the hard drive of your computer if you agree. Cookies contain information that is transferred to your computer's hard drive.
As some data privacy laws regulate IP addresses and other information collected through the use of cookies as personal data, Rio Tinto’s processing of such personal data needs to comply with its Data Privacy Standard (see Part 1 of this Privacy Policy), and also applicable data privacy laws.
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