THE EFFECT OF INTRUSION ON THE PHYSICAL AND CHEMICAL PROPERTIES OF COAL
DOI:
https://doi.org/10.23960/jge.v11i3.495Keywords:
Air Laya, Coal characteristics, Intrusion, Proximate analysisAbstract
Coal is a deposit of organic matter derived from plant remains that have undergone diagenesis process to form a coal seams. This study aims to determine the impact of intrusion on the physical and chemical characteristics of coal. The location of this research is in the Air Laya mining area, PT Bukit Asam Tbk, Tanjung Enim, South Sumatra and is part of the South Sumatra Basin which is well known as one of the coal bearing formation areas. Four (4) coal samples were analysed including proximate analysis, total sulphur content, and calorific value to measure moisture content, volatile matter, fixed carbon, ash content, and calorific value of the coal. Petrology and well log analysis was used to determine lithology and regression analysis was used to assess the effect of intrusion on coal characteristics. The results of the coal analysis in the research area reveal significant differences between coal samples located near the intrusion and those farther away. Coal located near the intrusion exhibits black colour, vitreous and conchoidal fracture. In contrast, coal farther from the intrusion shows a dull, blackish-brown, brownish streak, and uneven fracture. Coal near the intrusion shows lower moisture (1.5–1.7%) and volatile matter (17–25%), but higher ash content (7.9–8.2%), fixed carbon (67–73%), calorific value (7700–7968 kcal/kg), and sulphur (0.7–0.8%). In the other hand, coal farther from the intrusion has higher moisture and volatile matter, but lower fixed carbon, calorific value, and sulphur. The findings conclude that proximity to intrusion increases fixed carbon and calorific value but also raises sulphur levels, which may pose environmental and operational concerns.
References
Agung, N. M., Nugroho, W., & Hasan, H. (2019). Hubungan Kandungan Total Sulphur Terhadap Gross Calorific Value Pada Batubara PT. Carsurin Samarinda. Jurnal Teknologi Mineral FT UNMUL, 7(1), 1–8. https://doi.org/10.30872/JTM.V7I1.2422
Bukit Asam Mine Constructors (Bamco) (1983). Bukit Asam Drilling Campaign, Report on Geology-Coal Quality. Bukit Asam Coal Mining Development and Transportation Project, Morrison-Knudsen International Company Inc. and Rheinbraun Consulting GmbH, Cologne, 90 pp. (Unpublished).
Darman, H. & Sidi, F. H. (2000). An Outline of the Geology of Indonesia. Indonesia Association of. Geologists. 192 p.
Diessel, C.F.K. (1992). Coal-Bearing Depositional Systems (pp. 5-261). Springer-Verlag.
Harsono, A. (1993). Pengantar Evaluasi Log. Schlumberger Data Services, Jakarta.
Khasanah, U., Supriyanto, S., & Djayus, D. (2019). Analisis Nilai Log Gamma Ray dan Log Density Terhadap Variasi Kecepatan Perekaman Metode Well Logging Robertson Geologging (Rg). Geosains Kutai Basin, 2(1). https://doi.org/10.30872/GEOFISUNMUL.V2I1.400
Maulana, A. & Anggara, F. (2020). Karakteristik Batubara Terpengaruh Intrusi di Tambang Air Laya, Sumatra Selatan, dan Potensinya Sebagai Material Untuk Pembuatan Grafit Sintetis Buletin Sumber Daya Geologi. https://buletinsdg.geologi.esdm.go.id/index.php/bsdg/article/view/BSDG_VOL_15_NO_3_2020_4
Mijnbouw, N.V.S. (1976). Geological Study of The Bukit Asam Coal Mines, Jakarta, 18 pp. (unpublished).
Ogara, E.R., Fadhilah, A., & Ilham, A. (2023). Penentuan Peringkat dan Pengaruh Karakteristik Batubara Terhadap Nilai Kalori. JGE (Jurnal Geofisika Eksplorasi), 9(2), 122–130. https://doi.org/10.23960/jge.v9i2 .275
Pamekas, S.F., Nurdrajat, & Ghani, R.M.G. (2019). Kerangka Sekuen Pengendapan Batubara Berdasarkan Analisis Nilai Sulfur dan Kadar Abu Daerah Bentarsari, Kecamatan Salem, Kabupaten Brebes, Provinsi Jawa Tengah. Geoscience Journal, 3(4), 281–286. http://jurnal.unpad.ac.id/geoscience/article/view/23194
Purnama, A. (2021). Pengaruh Intrusi Terhadap Lapisan Batubara E (Keladi) Formasi Muara Enim, Sub-cekungan Palembang Selatan, Sumatera Selatan. Jurnal Teknologi Mineral dan Batubara, 17(1), 13–25. https://doi.org/10.30556/JTMB.VOL17.NO1.2021.1096
Siallagan, F., Dewanto, O., & Mulyatno, B.S. (2019). Analisis Reservoar Migas Berdasarkan Parameter Petrofisika Dari 7 Sumur di Cekungan Sumatera Selatan. JGE (Jurnal Geofisika Eksplorasi), 3(2), 52–64. https://doi.org/10.23960/JGE.V3I2.1040
Sugiarto, W., Listyani R.A.T., & Winarti. (2023). Pengaruh Kandungan Abu Terhadap Kualitas Batubara Pada Formasi Labanan. Kurvatek, 8(1), 1–6. https://doi.org/10.33579/KRVTK. V8I1.4020
Suhayadi, F. & Sriyanti (2022). Kajian Lingkungan Pengendapan Berdasarkan Karakteristik Batubara Formasi Pulau Balang. Jurnal Riset Teknik Pertambangan, 1–8. https://doi.org/10.29313/JRTP.V2I1.779
Thomas, L. (2013). Coal Geology. John Wiley & Sons.
Yao, Y., Liu, D., & Huang, W. (2011). Influences of Igneous Intrusions on Coal Rank, Coal Quality and Adsorption Capacity in Hongyang, Handan and Huaibei Coalfields, North China. International Journal of Coal Geology, 88(2–3), 135–146. https://doi.org/10.1016/ J.COAL.2011.09.004
Yenni, F. R. & Prabowo, H. (2021). Management Pengendalian Kualitas Batubara Berdasarkan Parameter Kualitas Batubara Mulai Dari Front Sampai ke Stockpile di PT. Budi Gema Gempita, Merapi Timur, Lahat, Sumatera Selatan. Journals Mining Engineering: Bina Tambang, 6(1), 110–120. https://doi.org/10.24036/BT.V6I1.111689
Zahar, W., Hawa, N., Anggayana, K., & Widayat, A. H. (2020). Analisis Lingkungan Pengendapan Batubara PT. Marunda Graha Mineral Kabupaten Murung Raya Mineral, Kalimantan Tengah. JTK (Jurnal Teknik Kebumian), 5(2), 37–46. https://doi.org/10.22437/JTK.V5I2.8210
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