AFS Cast Iron Conference

Recovering Bentonite and Carbon from Foundry Dust: Advancing Sustainability Through Hydromechanical Separation

Matthew Meyer
Roberts Sinto Corporation
Grand Ledge, MI

Enhance your foundry’s sustainable practices by recovering bentonite and carbon from foundry dusts currently destined for landfills. Using nonchemical hydromechanical separation techniques, this approach enables the reclamation of valuable materials, reducing waste and improving greensand system performance by utilizing preactivated clays. The presentation will cover the principles behind the separation and recovery process, share test data from multiple case studies, and discuss benefits reported by early adopters. Attendees will gain insights into how analyzing and pilot testing foundry dust can uncover economically recoverable resources that can be scaled for long-term footprint reduction.