Characterization of Kachchh Kaolin Tailing Sand: A Sustainable Silica Sand Resource for Diverse Industrial Applications
摘要
This study investigates the chemical and mineralogical properties of kaolin tailing sand from the Kachchh region, aiming to assess its potential industrial applications. The samples were analysed using grain size analysis, optical microscopy, X-ray diffraction (XRD), and X-Ray Fluorescence spectrometry to determine sand size distribution, shape, mineral assemblage, and main element composition. The studied samples were primarily composed of quartz (SiO2) as predominating mineral and varying impurities, including aluminium (Al2O3) and other metallic oxides (Fe2O3, TiO2, K2O, and Na2O). The grain size analysis found to possess an average grain size of less than 1 mm with an angular to sub-angular grain shape. Mineralogical analysis with X-ray diffraction revealed high-quality quartz alongside impurities such as kaolinite, anatase, and K-feldspar. Attrition scrubbing, gravity, and magnetic separation can increase sand purity for high-purity glass production, foundry, water filtration, construction, and chemical sectors. The findings emphasize the economic potential of repurposing kaolin tailings sand for diverse industrial applications. This research promotes resource conservation and addresses environmental concerns for sustainable kaolin mining practice.