Results
Five mixtures produced cast glass. The sixth was too viscous to pour from the crucible. MTG4 and MTG5 performed best in the chemical-resistance tests; the authors reported retention of arsenic, lead and zinc.
How it was tested
Silver-processing tailings from Durango were combined with waste bottle glass and fluxes. Samples were held at 400°C for one hour, then at 1,350°C for one hour. Powdered glass underwent acid and alkaline exposure at 96°C for three hours. Chemical resistance and density were measured in triplicate. The abstract gives 1,370°C, whereas the methods give 1,350°C.
Study limits
The authors caution that chemical-resistance results have high variability. They state that dilatometric and viscosity analyses are required for industrial considerations.
Further work proposed
The authors propose heat treatment to make glass-ceramics and characterisation for use as glazes on ceramic bodies.
Original sources
Miguel Ángel Escobedo-Bretado; Patricia Ponce-Peña; Martha Poisot; Alicia Rodríguez-Pulido; Diola Marina Núñez-Ramírez; Luis Alberto Bretado-Aragón; René H. Lara; Luis Medina-Torres; Zoe V. Quiñones-Jurado; Roberto Briones-Gallardo; María Azucena González-Lozano (2025). Characterization and Property Evaluation of Glasses Made from Mine Tailings, Glass Waste, and Fluxes.