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Scenarios to Valorize Treated Spent Pot Lining in Cement and Concrete

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Camara, N. and Ouellet-Plamondon, C.. 2023. « Scenarios to Valorize Treated Spent Pot Lining in Cement and Concrete ». In Proceedings of the Canadian Society of Civil Engineering Annual Conference 2021 : CSCE21 General Track (En ligne, May 26-29, 2021) Coll. « Lecture Notes in Civil Engineering », vol. 240. pp. 245-249. Springer Science and Business Media Deutschland GmbH.

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Abstract

Concrete is the most used building material around the world. Cement is the most common binder and its production requires renewable and non-renewable energy, and generates greenhouse gas emissions. The reduction of environmental impacts in the cement and concrete industries has led to a growing global concern for environmental sustainability. Supplementary cementitious materials (SCM) allow to replace the cement and the concrete, but the availability is becoming more limited. Among the supplementary cementitious materials, there is treated spent pot linings which are waste products from the production of primary aluminum or SPL (Spent Pot Lining) which is a hazardous material. However, an industrial solution has been developed to eliminate the hazardous properties of treated spent pot lined and to produce industrial and valuable products. This process is called Low-Caustic Leaching and Liming (LCL&L), the Rio Tinto plant can produce an inert material called LCLL ash from the SPL refractory materials. This inert material is composed of 60–70% SiO2 and Al2O3 and can be used as a raw material for clinker in the manufacture of cement and concrete. This study present Life Cycle Assessment (LCA) scenarios to valorize treated spent pot lining (SPL) in cement and concrete productions: first option is to landfill the treated SPL. The second option is use treated SPL as a raw material to produce clinker (high temperature process). Last and less sustainable scenario is to calcine the treated SPL through a lower temperature process (1050 °C) than clinker in order to be used as SCM.

Item Type: Conference proceeding
Editors:
Editors
ORCID
Walbridge, S.
UNSPECIFIED
Nik-Bakht, M.
UNSPECIFIED
Ng, K. T.
UNSPECIFIED
Shome, M.
UNSPECIFIED
Alam, M. S.
UNSPECIFIED
el Damatty, A.
UNSPECIFIED
Lovegrove, G.
UNSPECIFIED
Additional Information: Titre traduit : Scénarios de valorisation de la brasque usée traitée en ciment et béton
Professor:
Professor
Ouellet-Plamondon, Claudiane
Affiliation: Génie de la construction
Date Deposited: 28 Jun 2022 21:18
Last Modified: 18 May 2023 04:00
URI: https://espace2.etsmtl.ca/id/eprint/24813

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