Dry ball mill and application method

The invention relates to the technical field of ball mills, and discloses a dry ball mill and an application method. The dry ball mill comprises a ball mill drum, a driving motor and a static electricity removing device, wherein a material opening is formed in the middle end of the ball mill drum; a feeding and discharging barrel is fixedly arranged at the outer end of the material opening; auxiliary rotating gear shafts are fixedly arranged at the two ends of the ball mill drum; a rotating shaft column is connected to the outer end of each auxiliary rotating gear shaft; a right supporting plate is fixedly arranged at the right end of one rotating shaft column; a left supporting plate is fixedly arranged at the left end of the other rotating shaft column; a driving gear shaft is connected to the bottom of one auxiliary rotating gear shaft in a meshed mode; a driving shaft is connected to the right end of the driving gear shaft; the right end of the driving shaft is connected with a driving motor; and the stat