Investigation of processing of lignite midlings by flotation

In this study, processing of fine lignite coal middlings mined from Tunçbilek region was investigated by flotation process. The effects of the pulp ratio, kerosene/ vegetable acid ratio, downcomer length, washing water speed and particle size were investigated at the flotation method.As a result of oil-flotation experiments, optimum situations (d80=0.250 mm, 20% pulp ratio, pH = 7-7.5, kerosene / vegetable acid ratio = 1/1, washing water speed = 0, 6 L/min, downcomer length = 40 cm), a product which has 87.15% combustible matter efficiency and 10% ash content was obtained at the applying Jameson Flotation.