The International Aluminium Institute (IAI) has launched the Bauxite Residue Roadmap to maximise the use of bauxite residue in cement and concrete products. The roadmap provides information that addresses concerns, prejudices, technical and legislative barriers to bauxite residue use.
According to the IAI, bauxite residue production is likely to reach approximately one hundred and sixty million tonnes (Mt) in 2020 and a 7 to 8 billion tonne inventory by 2040.
Launching the roadmap, Katy Tsesmelis Director – Refining & Safety at the IAI noted: “Global metallurgical alumina production is forecasted to increase from 124 million tonnes in 2019 to 178 million tonnes by 2040. As alumina production increases so too will the production of bauxite residue (BR), which is generated by the extraction of alumina from bauxite during the Bayer process. As an industry, we are committed to finding solutions to minimise the social, environmental and economic impacts of bauxite residue.”
This roadmap has identified six key pathways that can help the industry deliver success:
The success of these pathways requires collaboration and commitment between several industry and other stakeholders.
Alongside the roadmap is a Bauxite Residue in Cement Calculation Tool that provides a simple assessment of the possible benefits of bauxite residue in cement products.
The energy, environmental and financial benefits of using BR in the cement and concrete industry are not well understood. This Tool evaluates electricity use, fuel consumption, expected emissions and related costs per tonne of material produced, comparing all possible scenarios of adding the residue to the baseline of the normal operation of the cement plant.
The IAI’s role is to foster collaboration between alumina companies to use their combined strength to solve an industry-wide challenge. The IAI will also provide expertise and help in disseminating and communicating project results.