期刊
MATERIALS CHARACTERIZATION
卷 61, 期 11, 页码 1252-1259出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2010.08.008
关键词
Fly ash; Stowing; Coal mines; SEM; XRD
类别
资金
- TIFAC, New Delhi
- Talcher Thermal Power Station of NTPC India
This study examines the suitability of Talcher coal fly ash for stowing in the nearby underground coal mines based on their physico chemical and mineralogical analysis The physical properties such as bulk density, specific gravity, particle size distribution porosity, permeability and water holding capacity etc have been determined From the chemical characterization it is found that the ash samples are enriched predominantly in silica (SiO2) alumina (Al2O3) and iron oxides (Fe2O3), along with a little amount of CaO and fall under the Class F fly ash category In addition, the mineral phases identified in the ash samples are quartz mullite magnetite and hematite The particle morphological analysis revealed that the ash particles are almost spherical in shape and the bulk ash porous in nature From the particle size and permeability point of view pond ash may be considered a better stowing material than fly ash (C) 2010 Elsevier Inc All rights reserved
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