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Transactions of the INDIAN CERAMIC SOCIETY   Vol. 80  2021
Synthesis of Ceramic Pigments with Chromium Content from Leather Waste
Bo He,1 Yi Du,1,* Huixiang Xu,1 Jingchen Ma,1 Chuanbing Cheng1 and Minxing Du2
Pages : 103-109
DOI : 10.1080/0371750X.2021.1887766
Abstract
Two different coloured ceramic pigments, blue-green and black, were prepared by using solid phase reaction method from calcined leather waste and industrial grade metal oxides. Chemical compositions of leather waste were characterized by X-ray fluorescence (XRF) in order to determine their chemical compositions, which indicated that the calcined leather waste could be used as a chromium precursor system to prepare ceramic pigments. Crystal structure, microstructure, absorption spectra and colorimetric coordinates of ceramic pigments were characterized by XRD, SEM, UVvis spectrophotometer and fully automatic colorimeter, respectively. Glaze experiments proved that the as-prepared pigments had good stability and excellent colour development performance. In addition, it was found that the best black colour rendering effect (L*=9.95) occured when the content of calcined leather was 45 wt%, however, the colour rendering performance of blue-green pigments was related to the amount of Al2O3 added. The process scheme is green and environmentally friendly, which is of great significance to resource recycling, sustainable economy and social development. [Keywords: Leather waste, Ceramic pigments, Resource recycling, Glaze experiments]
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