Abstract: As a product of coal processing,the high quality utilization of slime is a key problem in the field of coal processing. Shendong mining area,as the main producing area of long flame coal in China,produces a lot of slime every year,and it's necessary to study the utilization way of high quality slime. In this paper,the adsorption of quinoline from coking tail water by long flame coal in Shendong mining area was studied. The properties of coal samples were analyzed by laser particle size analyzer,SEM,BET,XRF and XPS. The influence of factors such as the dosage of long flame coal,adsorption contact time and initial concentration on adsorption effect was investigated by single factor test. The relationship between surface structure,properties and adsorption performance of long flame coal was discussed. The results show that Shendong long flame coal is a natural carbon-based adsorbent with rough surface and developed pore structure,with a specific surface area of 17.53 m~2/g. The surface pore structure is mesoporous,the surface contains oxygen-containing functional groups,and there are inorganic minerals. Shendong long flame coal has good adsorption effect on quinoline. Under the optimal conditions of the dosage 6 g/L,the contact time 30 min,and the initial concentration 4 mg/L,the removal rate of quinoline in simulated wastewater by Shendong long flame coal is 81. 46%. The adsorption behavior is found to accord with Freundlich isotherm model,indicating that the adsorption process is mainly dominated by multi-layer adsorption on the coal surface. The adsorption behavior is related to the surface properties and pore size of quinoline and long flame coal. According to the fitting parameters,the adsorption of quinoline on Shendong coal slime is easy to occur,and the adsorption performance is good.