The noise of the ball mill is mainly caused by the collision and grinding between the steel balls in the cylinder, the material and the lining. This noise is radiated outward from the surface of the cylinder, which belongs to the columnar sound source. The barrel noise is divided into two parts: one part is the air sound generated by the impact and grinding transmitted through the cylinder to the surrounding, and the other part is the sound radiation of the cylinder under the multi-point excitation of the steel ball and the material impacting the lining. The latter is more intense than the latter. In addition to the noise generated by the barrel, the motor, the coupling and the transmission also generate large noise, but the barrel noise is the main one. The factors affecting the noise of the ball mill are as follows: the size of the barrel of the ball mill, the steel ball, the pulverized material and the amount of feed, which can reduce the noise source from these aspects when using the ball mill!
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