|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Aluminum Waste Management and Utilization
||Valorization of Treated Spent Potlining in Cement Industry
||Laurent Birry, Jean Lavoie, Victor Brial, Claudiane Ouellet-Plamondon, Hang Tran, Luca Sorelli, David Conciatori
|On-Site Speaker (Planned)
Spent potlining (SPL) is a hazardous waste produced by aluminum smelters. It is classified as a hazardous waste because of its contamination with fluorides and cyanides and its reactivity with water, generating explosive gases. After the industrial and hydrometallurgical treatment by the Low Caustic Leaching and Liming (LCL&L) process, the refractory part of SPL becomes an inert non-hazardous material, called LCLL Ash. The cement industry is a major emitter of greenhouse gases. One of the best options for reducing the carbon footprint of concrete is the use of supplementary cementitious materials or filler to replace part of the cement in the concrete. This article presents the conditions for LCLL Ash to be a suitable and value-added material for cement industry. The results were obtained during the last 4 years R&D project at Ecole de Technologie Superieure (Montreal) and Laval University (Quebec), with support of Rio Tinto and Ciment Quebec.
||Planned: Light Metals