Kumar, Ritesh and Sharma, Sadanand (2013) Characterization of Coal Combustion Residues using Transmission Electron Microscopy Technique. In: International Conference on Structural and Physical Properties of Solids (SPPS 2013) Focal Theme : Smart Materials at NANO and Micro Scale , 18-20, November, 2013, Department of Applied Physics, ISM, Dhanbad.

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Indian coal-based thermal power stations produces huge amount of coal combustion residues. These coal combustion residues throws challenges in its proper disposal and management. In order to understand the material characteristics well one need to characterize the coal combustion residues with respect to various parameters so as to find suitable utilization. Coal combustion residue samples from thermal power stations of eastern India were used for characterizing ashes on the basis of TEM technique. The study of the micrographs of TEM showed that the coal combustion residue samples consisted of all the three viz. crystalline, polycrystalline and amorphous phases. The substances consisted of single crystal, single crystal with hexagonal structure, polycrystalline substances and closed packed hexagonal structures. Concentric circles obtained from the diffraction pattern show the presence of polycrystalline substances in the samples. Presence of plerosphere in the coal combustion residue samples con also be seen from some SEM micrographs as well as one of TEM images. XRD studies show the presence of various crystalline substances present in the coal combustion residues. The study shows that the CCR samples are typically formed of Si-A1-Fe system with traces of sodium, potassium, calcium, magnesium, sulphur and titanium.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Coal combustion residues, TEM, characterization, thermal power stations
Subjects: Methane Emission and Degasification
Depositing User: Mr. B. R. Panduranga
Date Deposited: 30 Dec 2015 10:58
Last Modified: 30 Dec 2015 10:58
URI: http://cimfr.csircentral.net/id/eprint/1525

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