Evaluation of the performance of the flotation system currently applied at Linhuan Coal Preparation Plant and analysis of the potential for recleaning of tailings

Low yield of concentrate and low ash of tailings are the problems encountered in the operation of the flotation system currently applied by Linhuan Plant. To address the issue, following an evaluation of the performance of the existing flotation process, an analysis is made of the potential for recleaning of the flotation tailings. Result of analysis shows that the process can work with an organic efficiency of 84.15%, indicating that there exists certain potential for recleaning of tailings; compared with direct recleaning process, the process of reflotation of ground tailings can yield a far better result; and a concentrate yield as high as 36.15% can be obtained at an optimum grinding time of 3 min and a concentrate ash of around 11.50%.