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Rio Tinto signs bio-pellet offtake agreement for Gladstone alumina refineries

This article was originally posted on Chemical Engineering Online.
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Summary
Rio Tinto has signed a five-year offtake agreement with Australian bioenergy company SuperChar to supply locally produced bio-pellets for its alumina refineries in Gladstone, with deliveries targeted to begin in 2028. The deal follows operational trials and a feasibility study, marking the next step toward integrating bioenergy at the sites.

What impact could bio-pellets have on the cost and emissions profile of alumina refining in Gladstone, and what obstacles do you anticipate to deployment by 2028?

Rio Tinto (London, U.K.) has signed a five-year offtake agreement with Australian bioenergy company SuperChar Ltd. (SCL; Sydney, Australia) for the supply of locally produced bio-pellets for use at its alumina refineries in Gladstone, with deliveries targeted to commence in 2028. The agreement follows Rio Tinto operational trials and a feasibility study and represents the next stage in […]

The post Rio Tinto signs bio-pellet offtake agreement for Gladstone alumina refineries appeared first on Chemical Engineering.

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Aug 1 at 6:00 AM
Promising, but how are they handling alkali/chlorine in pellet ash, variable LHV, and Gladstone humidity? We tried 10% biomass co-fire in a 60s boiler and cooked a superheater plus had a silo off-gas CO event in weeks, so ash chemistry, burner turndown, and storage conditioning need to be in the day-one design, especially for calciners.

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