Structural, microstructural, and thermal characterizations of a chalcopyrite concentrate from the Singhbhum shear zone, India
来源期刊：International Journal of Minerals Metallurgy and Materials2015年第3期
论文作者：Ritayan Chatterjee Shamik Chaudhuri Saikat Kumar Kuila Dinabandhu Ghosh
文章页码：225 - 232
摘 要：The structural and morphological characterizations of a chalcopyrite concentrate, collected from the Indian Copper Complex, Ghatshila, India, were carried out by X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The concentrate powder was composed mainly of free chalcopyrite and low quartz in about 3:1 weight ratio. The particle size was about 100 μm. Spectroscopic studies（FTIR, Raman, UV-visible） of the concentrate supported the XRD findings, and also revealed a marginal oxidation of the sulfide phase. The energy band gap of the sulfide was found to be 3.4 eV. Differential thermal analysis and thermogravimetry of the concentrate showed a decomposition of chalcopyrite at 658 K with an activation energy of 208 kJ ·mol-1, and two successive structural changes of silica at 848 K and 1145 K.
Ritayan Chatterjee1,2，Shamik Chaudhuri1，Saikat Kumar Kuila1，Dinabandhu Ghosh1
1. Department of Metallurgical and Materials Engineering, Jadavpur University2. Division of Materials Engineering, Lund University
摘 要：The structural and morphological characterizations of a chalcopyrite concentrate, collected from the Indian Copper Complex, Ghatshila, India, were carried out by X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The concentrate powder was composed mainly of free chalcopyrite and low quartz in about 3:1 weight ratio. The particle size was about 100 μm. Spectroscopic studies（FTIR, Raman, UV-visible） of the concentrate supported the XRD findings, and also revealed a marginal oxidation of the sulfide phase. The energy band gap of the sulfide was found to be 3.4 eV. Differential thermal analysis and thermogravimetry of the concentrate showed a decomposition of chalcopyrite at 658 K with an activation energy of 208 kJ ·mol-1, and two successive structural changes of silica at 848 K and 1145 K.
关键词：
