Effect of Dispersants on the Properties of Low-Cement Concrete for Jewelry Waste Melting Furnaces

Melting in ceramic crucibles is one of the stages in jewelry recycling. The consistency of the concrete mass plays an important role in molding large-scale refractory crucibles through vibratory casting. This article discusses the impact of commercially available dispersants (Castament FS 10, Melflux 1641 F, Peramin Al 200, FF7 Spezial, and PC-1701) on the rheology of the low-cement concrete mass of the corundum–mullite–zirconium composition and the materials’ physical and mechanical properties. The best results were obtained using the PC-1701 dispersant.