Discussion on the potential and way of clean utilization of coal resources in Fugu mining area,northern Shaanxi

Fugu is one of the national planned coal mining areas with massive coal resources. In order to find a way of clean and efficient utilization of coal resources, a series of tests, including coal quality analysis, maceral identification and trace elements analysis were carried out on the main coalbeds after the analysis of exploration data of relevant coal resources. The comprehensive analysis shows that the ash is the main obstacle to the cleaness of the Fugu mining area for coal quality with the characteristics of middle-high ash, low sulfur, high volatiles, high hydrogen atom ratio, low harmful elements and rich inert components. Comparative evaluation shows that the clean coal grade is of categories Ⅲ and Ⅱ for Fugu raw coal and floating coal. It was confirmed that chlorine mainly occurs in organic components, and fluorine, arsenic exist in inorganic minerals after the analysis of occurrence of harmful elements. The coal quality characteristics of high volatiles, high hydrogen atom ratio and low degree of deterioration make Fugu coal have a great advantage in direct liquefaction, therefore, the direct liquefaction of floating coal is one of the effective way of clean and efficient utilization of coal resources in Fugu mining area.