Aiming at the problems of coarse coal fineness and high carbon content of fly ash in the boiler pulverizing system of a 300 MW unit
the ZGM95 N medium-speed mill was tested for the distribution characteristics of powder and the characteristics of the separator. The distribution characteristics of pulverized powder in the four tubes and the characteristics of the coal mill separatorwere obtained. Under 300 MW load
the carbon content of boiler fly ash was reduced by 0.57%
and the carbon content of slag was reduced by 0.38% after adjustment. The boiler operation economy is improved
and the result has certain guiding significance for the boiler operation.