Inorganic Wastes in the Manufacture of Glass and Glass‐Ceramics: Quartz‐Feldspar Waste of Ore Refining, Metallurgical Slag, Limestone Dust, and Phosphorus Slurry

This work presents the results of an investigation on producing diopside glass-ceramic materials based on various combinations of quartz-feldspar waste from ore refining and limestone dust. Other industrial wastes were added to contribute as nucleation agents; when the concentration of the latter was insufficient, they were added in the pure state. Additionally, relatively high concentrations of alkalis were used to accelerate glass melting. Low-cost materials with promising exploitation properties were produced. A two-stage regime of crystallization of the basic glass composition was determined, including nucleation at 720°C and crystal growth at 950°C. Local environmental regulations must be considered for the selection of the type of admixtures and the combination of wastes.