Parting control on coal seam quality based on ash content and total moisture, North Musi Rawas, South Sumatera

Abstract

In its utility, coal is measured by how much the quality values contained inside such as ash content and total moisture. One of the factors that affect the value of coal seam quality is the existence of partings. Partings is an inorganic material that is formed in coal syn-depositional. Therefore, this study aims to identify the extent influence of the presence of the parting layers that in comparison of the laboratory test results from two sampling techniques. The application of the methods used was channel sampling where the coal sample was taken without partings and include partings. Coal seam thickness become the object of the research was 9.01 m with the presence of the four partings that have a thick layer of 6-8 cm. Comparative laboratory test result show ash content include partings more bigger than without parting with a difference of 2.7% adb. Deviation ash content the most indicated on ply 5. Suggesting parting layer has form of tuffaceous sandstone. Characteristic tuff is a volcanic deposits contain a high fly ash thus increasing ash content. While the total moisture include partings more smaller than without partings with a difference of 0.3% ar, It was suggested that partings just control the ash content, this is due to the type and character of lithology parting.