Abstract: Abstract:Taking the boiler No.1 ball mills of production center of PetroChina Daqing Petrochemical Company as example, the automatic disabled ball elimination technology was adopted to optimize the control of ball mill DTM350/600. The automatic elimination device was installed in the outlet of the mill, which can eliminate the disabled steel balls and the sundries of the ball mill online. The disadvantages of traditional screening method were overcome. At the same time, the energy consumption of the ball mill was reduced, the output capacity of the ball mill was increased, the service life of the structural parts of the mill was lengthened, and the boiler slag was avoided. The safety and the stability of the production process were ensured.

Key words: Keywords:ball mill, disabled steel ball;automatic elimination, screening, steel ball matching