Industrial Wastes As Prospective Raw Materials For The Synthesis Of Ceramic Materials

The growing accumulation of industrial wastes and the depletion of natural mineral resources have intensified interest in the development of alternative raw materials for ceramic technologies. In the present study, spent alumina-containing catalyst waste generated during natural gas purification at the Shurtan Gas Chemical Complex was investigated as a prospective raw material for ceramic material synthesis. The chemical composition, phase transformations, and thermal behavior of the waste material before and after thermal treatment were studied by chemical analysis, X-ray diffraction (XRD), differential thermal analysis (DTA), and thermogravimetric analysis (TG). The initial waste mainly consisted of gibbsite and γ-alumina phases, while calcination at 900 °C promoted complete dehydration and the formation of single-phase γ-Al₂O₃ with an alumina content exceeding 96 wt.%. Thermal analysis revealed that the principal weight loss occurred within the temperature range of 150–615 °C and was associated with dehydration and phase transformation processes. The obtained results demonstrate the possibility of utilizing alumina-containing industrial waste as a promising secondary raw material for the production of advanced ceramic materials.

Industrial waste, alumina-containing waste, γ-Al₂O₃

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