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  • Title: FT-IR characterization of articulated ceramic bricks with wastes from ceramic industries.
    Author: Nirmala G, Viruthagiri G.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2014 May 21; 126():129-34. PubMed ID: 24594884.
    Abstract:
    The 30 ceramic test samples with the kaolinitic clay and ceramic rejects (in the as-received state and sintered at temperatures 900-1200°C) were investigated through spectral studies in order to elucidate the possibility of recycling the wastes from the government ceramic industry of Vriddhachalam, Tamilnadu state, South India. A detailed attribution of all the spectroscopic frequencies in the spectra recorded in the 4000-400cm(-1) region was attempted and their assignment to different minerals was accomplished. X-ray diffraction analysis was performed to demonstrate the reliability of IR attributions. The indication of well-ordered kaolinite is by the band at 1115cm(-1) in the raw samples which tends to shift towards 1095cm(-1) in all the fired samples. The peaks at 563cm(-1) and 795cm(-1) can be assigned to anorthite and dickite respectively. The presence of quartz and anorthite is confirmed both by XRD and FTIR. The microstructural observations were done through the SEM images which visualized the vitrification of the fired bricks at higher temperatures. The refractory properties of the samples found through the XRF analysis are also appreciable. The present work suggests that the incorporation of the rejects into the clay mixture will be a valid route for the ceramic industries to reduce the costs of the ceramic process.
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