PENENTUAN PERINGKAT BATUBARA BERDASARAKAN ANALISA MASERAL DI DAERAH TANJUNG BELIT, KABUPATEN DHARMASRAYA, PROVINSI SUMATERA BARAT

Abstract

The research area was located in Tanjung Belit Village, Dharmasraya Regency, West Sumatra as part of the South Sumatra Basin, Jambi Sub-Basin. The research method is mapping and coal sampling as the basis for maceral and pyroximate analysis. Based on the results of the maceral analysis, the research area can be divided into two coal seams, namely Seam A and Seam B. The results of the RV (Refletant Vitrinite) analysis, Seam A has a value of 0.47% which indicates the calorific value of Seam A is High Volatile Bituminous C. Seam B has an RV value of 0.39% – 0.46% which indicates the calorific value in the form of Sub Bituminous. The results of the maceral analysis of Seam A and Seam B have significant differences in the inertinite group, namely: Seam A has an inert value of 3.0% – 4.4% and Seam B has an inert value of 12% – 18.8%. High vitrinite values ​​characterize the formation of coal in this group from plants that have been burned and most of it comes from other maceral oxidation processes (dexarboxylaction). The maceral oxidation process caused by bacteria and fungi, so that it will increase the ash and sulfur in a coal.