Production of stoneware clay bodies by using industrial soda-lime-silica glass waste

Abstract

Various researches on the recycling and reuse of potential wastes have accelerated. Industrial waste glass from the production and use of many products is one of the main sources of environmental pollution, because only 30% is reused globally. In this study, as an alternative fluxing component in the compositions of stoneware ceramic bodies, industrial soda-lime-silica glass wastes (GW) were utilized as partial and total replacing of sodium feldspar and potassium feldspar in the starting batches. New body recipes were composed by adding glass waste to the standard body composition consisting of quartz, kaolin, clay, Na-feldspar, and K-feldspar. Glass wastes were processed by grinding and sieving and further characterized by using hot-stage microscope, X-ray diffraction (XRD), and particle size analyzer. Designed clay body compositions were fired according to a special heat treatment cycle and characterized in terms of thermal, physical, mechanical, and microstructural behavior using a spectrophotometer, differential thermal analyses, hot-stage microscopy, XRD, scanning electron microscope, strength instrument, and energy dispersive X-ray spectroscopy.