Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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Role of Microstructures in the Spontaneous Combustion of Raniganj Coals: A SEM Study


Affiliations
1 Department of Geology, Banaras Hindu University, Varanasi, India
2 Department of Applied Geology, Indian School of Mines, Dhanbad, India
3 Quality Control Department, CCL, Ranchi, India
     

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The Scanning Electron Micrography of bulk coal samples from Dishergarh, Sirpur and Kajora areas of Raniganj Coalfield has been attempted with a view to find out the role of microstructures in promoting the spontaneous combustion of these coals. Microanalysis of vitrain and c1arain has shown that these bands of R-VIII seam are highly porous as compared to the overlying and underlying seams. Further, finely dispersed pyrite has also been observed filling these micropores. It is concluded that the occurrence of ubiquitous micropores could be a prevalent factor responsible for the spontaneous combustion property of these coals in different ways.
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  • Role of Microstructures in the Spontaneous Combustion of Raniganj Coals: A SEM Study

Abstract Views: 177  |  PDF Views: 2

Authors

Mahendra P. Singh
Department of Geology, Banaras Hindu University, Varanasi, India
D. Chandra
Department of Applied Geology, Indian School of Mines, Dhanbad, India
Y. V. S. Prasad
Quality Control Department, CCL, Ranchi, India

Abstract


The Scanning Electron Micrography of bulk coal samples from Dishergarh, Sirpur and Kajora areas of Raniganj Coalfield has been attempted with a view to find out the role of microstructures in promoting the spontaneous combustion of these coals. Microanalysis of vitrain and c1arain has shown that these bands of R-VIII seam are highly porous as compared to the overlying and underlying seams. Further, finely dispersed pyrite has also been observed filling these micropores. It is concluded that the occurrence of ubiquitous micropores could be a prevalent factor responsible for the spontaneous combustion property of these coals in different ways.