Abstract: The challenges facing Lingxin Plant are low separation sharpness of jigging system and ineffective separation of the < 13 mm size coal. Investigation indicates that the < 30 mm refuse product has a calorific value of 8.36~10.04 MJ/kg with the content of the < 1.70 g/cm density fractions of being 3.5%~6% on average, and as evidenced by screening analysis of the floats, the floats are mainly in the < 30 mm size fractions. Through a simple technical transformation of screening and blending the < 30 mm refuse into small coal product, there have been seen a noticeable drop of loss of clean coal in refuse, reduced refuse dumping rate and increased yield of cleaned small coal, bringing about a favorable social and economic result for the plant.