COAL QUALITY CHARACTERIZATION IN EAST KALIMANTAN PROVINCE, INDONESIA: REVIEW FROM PROXIMATE, ULTIMATE AND CALORIFIC VALUE ANALYSES.
Rahmaniar Rahman1, Sri Widodo2, Busthan Azikin3, Dahlang Tahir4
1 Graduate Student of Earth and Environmental Technology, Geological Engineering Department, Faculty of Engineering, Hasanuddin University 90245, Indonesia
2 Mining Engineering Department, Faculty of Engineering, Hasanuddin University 90245, Indonesia
3 Geological Engineering Department, Faculty of Engineering, Hasanuddin University 90245, Indonesia
4 Physics Sciences, Faculty of Science FMIPA, Hasanuddin University 90245, Indonesia
Abstract
ABSTRACT. This study discussed the characterization of the different qualities of coal in Kalimantan. The chemical and physical characterization of Kalimantan coal aimed to find the level of coal quality through proximate, ultimate and calorific value analysis. Based on the results of the study, the coal obtained from PT. Kideco Jaya Agung (KJA) had moisture content of 17.86%, fixed carbon of 36.56%, ash of 2.94%, volatile matter of 42.64%, carbon of 44.86%, sulfur of 0.079% and calorific value of 4468.65 cal/gram. PT. Indemix Coalindo (IC) had coals with moisture content of 25.94%, fixed carbon of 32.48%, ash of 3.78%, volatile matter of 38.26%, carbon of 45.03%, sulfur of 0.436% and calorific value of 4462.67 cal/gram. Based on the results of the study, the efforts were needed to improve the quality of coal so that the coal collected could become an alternative energy-source with its highest quality and calorific value. Thus, it could compete in the international market.
Keywords: Keywords: proximate, ultimate, calorific value, coal, characterization.
Topic: Renewable Energy