The role of coal petrographic characteristics in evaluating the non-coking nature of the coals of ramagundam and Kothagudem coalfields,Godavari Valley Basin,Andhra Pradesh,India |
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| Affiliation: | 1. Department of Metallurgical Engineering, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Ganesha 10, Bandung 40132, Indonesia;2. Department of Mining Engineering, Faculty of Engineering, Universitas Pejuang Republik Indonesia, Gunung Bawakaraeng 72, Makassar, 90151, South Sulawesi, Indonesia;3. Geomicrobiology-Biomining & Biocorrosion Laboratory, Microbial Culture Collection Laboratory, Biosciences and Biotechnology Research Center (BBRC), Institut Teknologi Bandung, Ganesha 10, Bandung 40132, Indonesia;1. Coal Chemistry Division, CSIR-Northeast Institute of Science & Technology, Jorhat 785006, India;2. Academy of Scientific and Innovative Research, New Delhi 110025, India;3. Department of Physics, Tezpur University, Tezpur 784008, India;1. BRGM, Regional Geological Survey Pays de la Loire, 1 rue des Saumonières, 44232 NANTES Cedex 3, France |
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| Abstract: | The maceral and microlithotype compositions of coals representative of the different coal seams of the Ramagundam and Kothagudem coalfields, Godavari Valley Basin, are compared with those of the Ib River, Talcher, South Karanpura, Hura, and Brahmani coalfields. The vitrite + clarite—“Intermidiates”—durite + fusite + shale (<20%) triangular diagram places these coals in the area of non-coking coals, clearly distinct from the coking and semi-coking coals. The vitrinite reflectance is low (Rormoilaver: 0.38–0.71%), far below the coking-coal range. Thus, based on petrographic composition and rank, these coals are of non-coking nature. A triangular diagram is proposed delineating the coking, semi-coking and non-coking coal areas for the Gondwana coals of India. |
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