Coal is a mixture of organic and inorganic materials. The inorganic portion is often called mineral matter. This mixture varies from seam to seam and within a seam both horizontally and vertically over a mine extent. This variation in relative amount of organic and inorganic material is reflected in the quality difference from one coal to another. Pakistani coal is characterized by large amount of mineral matter especially pyrite, which restricts its use in power generation and local industry. High ash contents in coal create problems in terms of slagging, fouling, clinker formation and environmental pollution. High ash content of the coal will affect the coal applications in order to reduce ash content of coal, there is need to clean the coal.

 The objective of this research is to study the effects of dense medium, specific gravity, settling time and particle size on coal washability. Washability curves will be drawn to anticipate theoretical yield and ash contents of clean coal at different specific gravity values in order to optimize the overall process.