Robust design and optimization of the electrically driven thermal regeneration process for foundry sands using an electromagnetic induction heating system
Taoues Ait Said1, Pierre Cachot2, Ameziane Aoussat1
1Laboratoire de Conception de Produits et Innovation LCPI – Arts et Métiers Institute of Technology
151 Boulevard de l’Hôpital, 75013 Paris, France
2Entreprise Pierre Cachot
9 Rue des Grandes Bouteilles, 70160 Faverney
Abstract: Efficient regeneration of spent foundry sands is essential to minimize environmental impact and enhance casting quality. This study explores an alternative electrothermal regeneration approach, replacing conventional gas-fired fluidized-bed systems with a rotary kiln powered by electromagnetic induction heating. A two-phase experimental protocol was conducted, consisting of cold-state tracer tests to determine mean residence time, followed by hot-state experiments to assess thermal performance and energy consumption. To reduce the experimental workload while maintaining statistical robustness, the Taguchi method was employed for the design of experiments and process optimization.
Key words: Robust Design, Electrothermal Regeneration, Design of Experiments (DOE), TAGUCHI, Mean residence time