Grinding bodies of drum mills and crushers (design review)

Abstract

A classification of grinding bodies of drum grinders – mills and crushers – for the destruction of lumpy and bulk materials processed at enterprises of the chemical, mining, construction, food, metallurgical and electrode industries has been developed. A critical review of the most characteristic designs of grinding bodies of drum mills proposed by scientists, designers and inventors of the leading countries of the world has been carried out. The designs of grinding bodies are analyzed depending on the method of grinding, shape, degree of assembly, degree of mobility of the bodies elements, the presence of additional functions, as well as the material of the bodies and their structural elements. An analysis of the designs of grinding bodies of drum mills and crushers for the destruction of lumpy and bulk materials indicates the presence of their significant diversity, however, traditional grinding bodies in the form of balls and cylinders remain the most used in industry. At the same time, the most promising direction for improving the grinding bodies of drum grinders is the development of specialized (rather than traditional universal) designs of grinding bodies, as well as materials for their manufacture.