In order to consume the waste coal mud in coal preparation plant, Jizhong Energy gangue Electricity Plant  pithead self-provided power plant circulating fluidized bed boiler was transformed technically. The Electricity Plant combined actual state and process of coal preparation plant, traditional burning coal mud was changed to directly adding coal mud, which saved filter press filter slime process link and slurry system, equipment, etc. The technology was simple, economical and practical. Through 3Χ75 t/h and 1Χ130 t/h circular fluid-bed boiler burning coal mud directly, which proved good effect, stable running of the boiler, rated output, steam temperature, pressure, etc were normal.