|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Aluminum Reduction Technology
||Latest Developments in GTC Design to Reduce Fluoride Emissions
||Philippe Martineau, Youssef Joumani, Bassam Hureiki, Jérémy Neveu, Fabienne Virieux
|On-Site Speaker (Planned)
The emission of fluorine from aluminium smelters to the atmosphere remains a serious environmental concern and requires special considerations during GTC engineering phase for greenfield or creeping projects. In order to achieve the lowest emission of fluorides, Fives has developed several innovations and demonstrated their benefits at industrial scale:
• A dedicated flow-control valve installed at pots outlet ducts allowing the adjustment of the pot gas suction with cell operation requirements,
• An alumina recirculation gas scrubber named OZEOS designed to allow adjustments of the alumina residence time optimizing the HF adsorption,
• The Fives Solios patented process of alumina Cascade with specific Air Gravity Conveyor ensuring an improved scrubbing efficiency in very warm areas,
• A digital solution combining multi-locations measurements of hydrogen fluoride (potroom & stack).
The current paper describes the R&D works, the industrial implementation and the industrial results obtained thanks to these innovations.
||Planned: Light Metals