Coal Quality Analysis From Sorong, Southwest Papua, Indonesia

Authors : Yanche Deril Salempang, Sri Widodo, Sufriadin Sufriadin

Pages : 202-217

Doi:10.17824/yerbilimleri.1773702

View : 45 | Download : 164

Publication Date : 2025-12-31

Article Type : Research Paper

Abstract :This study aims to determine the rank and quality of Sorong coal, as well as its potential in power generation, processing capabilities, handling, combustion, fuel efficiency, grinding capabilities, and other applications. The study uses proximate analysis, calorific analysis, ultimate analysis, and hardness analysis to determine the characteristics of Sorong coal collected from four different locations: Moisegen I–III and Klayili. Based on these analyses, Sorong coal is classified as lignite coal with moderate to high moisture content (19.49%–33.35%); however, it remains suitable for use as fuel. The low ash content (1.33%–3.18%) means Sorong coal does not produce significant amounts of combustion residue. However, the high volatile matter content (37.54%–41.81%) makes it prone to spontaneous combustion. Although the fixed carbon content of Sorong coal is classified as moderate (25.86%–36.84%) and its calorific value is classified as low (14.43 MJ/kg–18.52 MJ/kg), this coal is still suitable for use as fuel in industrial and power generation facilities. Sorong coal is classified as relatively easy to grind, with an HGI value ranging from 47.43% to 58.73%, indicating higher efficiency in grinding performance. Sorong coal (0.27–1.70%) is classified as medium sulfur coal. Therefore, the use of this fuel requires careful consideration. In terms of potential applications, Sorong coal is considered suitable for use as fuel in small to medium-sized power plants and other combustion industries; however, it is not suitable for coking coal purposes.
Keywords : Sorong Coal, Proximate Analysis, Total Sulfur, Calorific Value, Hard-grove Grindability Index

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