Abstract: Abstract:There were defects in the mill of Ningxia Jingneng Ningdong Power Generation Company Limited, which include the larger resistance, the poor uniformity of the pulverized coal, the insufficient output and others. It is needed to reform the mill separator to solve above problems. Combining with the features of the mill separator, the parameters of the mill separator before and after reformation, such as the fineness of the pulverized coal, the uniformity index, the power consumption of the mill and others, were compared. The feasibility of the mill separator reformation was analyzed. After the mill separator was reformed, better result was obtained.

Key words: Keywords:mill, dynamicstatic combined vane rotor classifier, static separator, reformation, effect analysis