Coal TransAlta finds a use for its landfilled coal fly ash The flyash will include waste from TransAlta’s coal-fired generation activities near Edmonton, Alberta, which ended last year. Clarion Energy Content Directors 1.10.2023 Share (Ash-TEK fly ash production line. Credit: Ash-TEK) TransAlta Corp. and Lafarge Canada will repurpose landfilled fly ash to replace up to 25% of the cement used in concrete manufacturing. The flyash will include waste from TransAlta’s coal-fired generation activities near Edmonton, Alberta, which ended last year. Lafarge was awarded C$15 million ($11.17 million) from the Government of Alberta through Emissions Reduction Alberta to advance the project. Landfilled fly ash must first go through a beneficiation process to be used in concrete. The project will use the Ash-TEK Ponded Ash Beneficiation System (PABS) technology. A statement said that tests produced high quality ash during trials and proved to have a low carbon footprint and an economical operating cost. Lafarge said it plans to use this approach to remove moisture from the ash, mill it, and remove excess carbon. The Ash-TEK PABS technology is designed as a multi stage, modular ash beneficiation plant that converts ponded, carbon rich out of specification ash into a consistent ASTM class C or F Fly Ash. Each PABS line is designed to produce 100,000 tons of fly ash per year. Geocycle, a waste management services provider, and a Lafarge subsidiary in Canada, will also take part in the initiative. In 2021, TransAlta said it would shut down the Highvale mine, suspend the Sundance Unit 5 repowering project, and retire Sundance Unit 4 and Keephills Unit 1. Related Articles Babcock & Wilcox receives $246 million contract for coal-to-gas project AES Indiana wants to convert its remaining coal units to natural gas Austin Energy says it needs more time to evaluate exit of large coal-fired plant Utah bets on selling coal power at a premium price, but other western states may not want it
