The ball mill is a commonly used grinding equipment for beneficiation production lines, but it has the disadvantages of high noise and short noise propagation distance. It not only seriously affects the working state of the staff, but also damages the staff's ears, causing serious harm to the staff's mental and physical health. With the development of modern technology and the increase in the importance of industrial noise pollution, it is important to reduce the noise during the work of the ball mill through an effective ending method and create a quiet and comfortable production environment.
1. Add sound insulation cover to the ball mill
The sound insulation cover can be divided into three types: fixed type, movable type and curtain type. The fixed sound insulation cover has a high sound insulation amount, but it will deteriorate the performance of ventilation and heat dissipation in the workshop, and it is difficult to maintain the equipment. The movable sound insulation cover is improved on the basis of the fixed sound insulation cover, and the maintenance performance has been improved, but the amount of sound insulation has decreased, and the problem of ventilation and heat dissipation has not been solved, and it requires a larger space. The curtain-type soundproof cover is developed to solve the contradiction between the movable soundproof cover occupying a large space and the venue. It has the advantages of flexible disassembly and assembly, and centralized storage. The disadvantage is still that the ventilation and heat dissipation are poor, and the price is relatively low. high.
The above three noise enclosures are inspired from the noise transmission path, and are bulky and passive measures. However, under certain economic and technical conditions and on-site environment, it is also an effective expedient measure.
2. Replace manganese steel lining with rubber lining
This method is one of the technical measures to fundamentally reduce the sound of the cylinder according to the noise generation mechanism of the ball mill. The rubber lining is easy to install, and at the same time has a good damping and damping effect. When the lining is impacted by the steel ball, the impact duration can be increased, and the noise reduction effect is obvious. However, when selecting the rubber lining, you should pay attention to the high temperature resistance and Rubber plate with good wear resistance. At the same time, a heat-resistant soft rubber pad can be placed between the inner surface of the ball mill drum and the lining plate in the ball mill. To prevent the soft rubber pad from overheating, an industrial thickness of 10-15 mm is placed between the ball mill lining plate and the soft rubber pad Felt and ball mill can reduce the noise of the ball mill below the allowable standard.
3. Strengthen the ventilation, heat dissipation and silencing treatment of the ball mill equipment
The noise of the ball mill is not only related to the impact of the equipment itself, but also has a close relationship with the production material itself. For many production materials, it is itself due to the large amount of heat generated during the contact of the steel ball. This heat may directly affect the noise reduction measures effect. Therefore, during the work of the ball mill, attention should be paid to the ventilation and heat dissipation of the ball mill equipment, and the heat generated during the production process should be processed in time.
The above is the source of the noise generated by the ball mill and several noise reduction methods. The operator of the ball mill needs to analyze the specific problems and solve the problem of excessive noise according to the actual situation of the ball mill. It is recommended to find ball mill manufacturers with overall qualifications to purchase equipment that meets the production scale of the concentrator, and to obtain a higher rate of return on investment while ensuring that the overall cost of the concentrator does not increase.
