Rio Tinto & ARENA Study Hydrogen To Replace Natural Gas

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Rio Tinto has partnered with the Australian Renewable Energy Agency (ARENA) to study whether hydrogen can replace natural gas in alumina refineries to reduce emissions, says in article published on their website.

Funding

Rio Tinto will conduct a $1.2 million feasibility study, equally funded with ARENA through a $580,000 grant, into using clean hydrogen to replace natural gas in the calcination process of refining at the Yarwun aumina refinery in Gladstone.

Rio Tinto Aluminium Pacific Operations acting managing director Daniel van der Westhuizen said “We see the ARENA and Rio Tinto-funded study as a step towards reducing refinery emissions and one that has the potential to play an important part in Rio Tinto’s commitment to decarbonisation.

“We’re investing in work that needs to be done, not only to decarbonise one of our sites, but also to help provide a lower-emissions pathway for Rio Tinto and the global aluminium industry”.

Study

The study comprises two distinct work packages:

  1. Preliminary engineering and design study conducted to understand the construction and operational requirements of a potential demonstration project at the Yarwun alumina refinery.
  2. Simulating the calcination process using a lab scale reactor at the Bundoora Technical Development Centre.

ARENA CEO Darren Miller said “If we can replace fossil fuels with clean hydrogen in the refining process for alumina, this will reduce emissions in the energy and emissions intensive refining stage of the aluminium supply chain. Exploring these new clean energy technologies and methods is a crucial step towards producing green aluminium.

“This study will investigate a potential technology that can contribute to the decarbonisation of the Australian alumina industry. If successful, the technical and commercial lessons from Rio Tinto’s study could lead to the implementation of hydrogen calcination technology, not only in Australia, but also internationally.”

Summary

  • Rio Tinto has partnered with ARENA to study whether hydrogen can replace natural gas in alumina refineries to reduce emissions.
  • Rio Tinto will conduct a $1.2 million feasibility study, equally funded with ARENA through a $580,000 grant, into using clean hydrogen to replace natural gas.
  • Exploring these new clean energy technologies and methods is a crucial step towards producing green aluminium.
  • If successful, the technical and commercial lessons from Rio Tinto’s study could lead to the implementation of hydrogen calcination.

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Source: riotinto.com