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Jha P.K.,Research and Development Center for Iron & Steel | Das T.K.,Research and Development Center for Iron & Steel | Soni A.B.,National Institute of Technology Raipur
International Journal of Coal Preparation and Utilization | Year: 2016

In this study weathering was carried out for coals (source wise) in open piles at the Bhilai Steel Plant (BSP). Imported hard coals were selected for these studies. Several methods such as alkali extraction test, measurement of the free-swelling index, and the pH of the coal slurry have been applied to monitor coal weathering. These tests suggest that the pH of the coal slurry and alkali extractions are better methods to identify the weathered coals. The relative sensitivity to weathering for hard coals was also determined. These coals were carbonized using a box filled with coal at a bulk density of 830 kg/m3 in a commercial oven at the Bhilai Steel Plant. In each case, the coke produced from weathered coal deteriorates the coke quality, but the degree was different for different coals. © 2016 Taylor & Francis

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