A statistical design of parametric study of pressure filtration for fime coal dewatering is presented. The effects of five major parameters of the dwatering, i.e. applied pressure, filtration time, cake thickness, solids concentration and slurry pH, on cake moisture reduction and air consumption were investigated. The study was conducted starting with two level factorial experiments to identify the most significant parameters, and concluding with response surface metho-dologies to establish an optimum operating condition for the dewatering of fine coal. It was observed that applied pres-sure, cake thickness and filtration time were identified to be the dey operating variables for reduction of filter cake mois-ture as well as air consumption. With the dey parameters, on optimum condition for the dewatering was determined to be an applied pressure of 93 psi with a cake thickness of 2.5cm and a filtration time of 4.8 minutes for the laboratory fil-tration system. At these optimum conditions the filter cake containing about 22 percent moisture by weight and con-suming air by 4.1m³/(m²ㆍminㆍkg) on dry solid basis was obtained.