Improvement of the structure of a ball mill with the purpose of increasing the efficiency of material crushing

Abstract

The object of research is the design of a ball mill for grinding dry materials, the subject of research is the efficiency of grinding material based on improving the design of a ball mill. One of the important problems for ball mills is the problem of reducing the efficiency of grinding material. The degree of grinding of materials in ball mills ensures the quality of the product. That is why this work is aimed at choosing a way to improve the design of the ball mill in order to increase the efficiency of grinding material. This will provide a better process of grinding the material in the ball mill. The study used the analysis of the features of the ball mill designs, literature and patent review of existing ways to improve the designs of the ball mill to improve the efficiency of grinding material. As a result of the literature-patent review the method of improving the ball mill based on the prototype, which has a rotating drum with longitudinal partitions and grinding bodies, longitudinal partitions are located diametrically at right angles with windows alternating on both sides from the intersection. It is shown that the proposed method of improving the design of the ball mill will increase the efficiency of grinding dry materials. This is due to the fact that when moving the grinding bodies and the material on the partitions there is a collision of flows, and this will increase the productivity of the ball mill. Also at the same time there will be a decrease in the moment of resistance to rotation of a drum of a ball mill that will provide economy of the electric power for its work. In comparison with the known designs of the ball mill, the execution of diametrical partitions at right angles with prisms in the drum of the mill all the grinding bodies, and the material is moved along the partition, then half of the drum. This will increase the efficiency of grinding the material in the improved design of the ball mill.