The air-swept ring roller mill for clinker grinding

Abstract

The symmetrical air-swept ring roller mill heralds a new era in cement grinding. To really understand the advantages of the new mill concept compared to other mill systems, the basis of its development is thoroughly described. Furthermore, the working principles of the mill itself as well as the entire mill system are outlined. The operating data of the first air-swept ring roller mill in operation is presented and compared with data from other mill systems. Similarly, the laboratory results' of testing cement samples are discussed and compared with results obtained with ball mill systems. In addition to the higher power savings and the improved cement properties compared with other mill systems, the basis for improvement of the service life of mechanical elements such as grinding parts and mill internals is explained.