Process Parameters Research And Flow Field Analysis Of High Speed Classify-impact Mill

The purpose of this paper is to improve the powder production and reduce the energy consumption of equipment by the means of the study of process parameters of classify-impact mill. The description for influence of process parameters is insufficient till now, such as the secondary air, the number of beaters, the height of beaters.The related theory of classify-impact mill and it’s structure were simply introduced in this paper. The focus is on the process parameters of classify-impact mill. Experimental research was implemented on secondary air, circumferential speed of beaters, the number beaters and the height of beaters. The analysis of various process parameters on the powder production and equipment energy consumption were conducted in this paper. The results show that the yield is improved when secondary air is offered. As for the circumferential speed, the yield is higher than 100m/s or 110m/s, even 120m/s when circumferential speed is 130m/s. The selection of the number of beaters and height of beaters is not simple to generalize, there is an optimal value in it. In order to analyze the experimental phenomenon, numerical simulation of internal flow field of LNI-66 A classify-impact mill was carried out. Combined with the experimental results, the flow field of the grinding area of classify-impact mill was analyzed in this paper.The research results of the number of beaters show that there is a large difference between past design theory and actual production situation. The research results of the height of beaters show that there is a reasonable value in it. The height of beaters should not be too high or too low. This paper provides a reference to classify-impact mill for follow-up research, it also provides the basis to industrial production and design reference for classify-impact mill.