The trajectory of the steel ball in thShandong Dongxin Wear-resistant Materials Co., Ltde ball mill-

          The trajectory of the steel ball in the ball mill

       When the steel ball moves in a downward motion, the material will be crushed by the mutual friction force generated during the upward and downward rolling process of the ball load cylinder wall, and the ore particles will be further crushed by grinding through the friction force between the ball loads. The steel ball also produces a significant impact during its top-down rolling, and the ore particles are crushed through a huge impact. The grinding and crushing effect of steel balls on materials in the downward movement is mainly grinding, supplemented by impact.

      In a ball mill, whether the steel ball is in a downward or downward motion, or a mixed motion of the two, the energy state of the moving ball in the ball mill changes. The potential energy of the steel ball at the bottom of the cylinder is zero relative to the cylinder bottom, and the kinetic energy of the steel ball is zero. As the steel ball is lifted by the lining Flat noodles, the potential energy gradually increases, and the steel ball has kinetic energy. When moving to the highest point, the steel ball of the ball mill has both potential energy and kinetic energy. When the steel ball is thrown from the highest point and comes into contact with the ore material, all energy is converted into the kinetic energy of the steel ball hitting the ore material, and finally into the deformation, crack and expansion energy of the ore material, as well as the surface energy of the crushed material. The steel ball reaches the bottom of the cylinder, and a movement cycle ends.

      In order to obtain the highest possible energy from the outside for the grinding medium and absorb it as much as possible reasonably by the mill, so that the steel ball can obtain more kinetic energy to crush the material, it is necessary to make the grinding medium group of the ball mill perform throwing motion as much as possible.

       During the grinding process of a ball mill, there are many variable parameters, such as the speed, specifications, and medium filling rate of the ball mill, which make the motion state of the materials in the mill complex and diverse.

       When the steel ball is in a throwing motion, there is significant resistance during the rising process of the steel ball. The grinding effect on the material mainly comes from the grinding effect between the steel ball and the lining plate, as well as between the steel ball and the steel ball. Through this effect, the material is ground and crushed. When the steel ball rises to a certain level, it will undergo a throwing motion. During this process, the material is not affected by any force, so it will not be ground or broken. When the steel ball falls to the foot of the ball load, it will violently collide with the lining plate on the bottom surface and generate a large impact force. This impact force is used to crush the material, so the grinding and crushing effect of the steel ball during throwing motion is mainly impact crushing, supplemented by grinding. This method generates a relatively high impact force and crushing efficiency.