Research Article Open Access

METHODOLOGICAL APPROACHES TO CONTROLLING THE FEED BREAKAGE PROCESS IN DRUM AND TUBE MILLS BASED ON THE RESULTS OF VIBROACOUSTIC DIAGNOSTICS

Abstract

In concentrating mills of non-ferrous metal plants where one of the production process components is feed breakage, primary energy costs accrue to the operation of drum and tube mills. Effective mill operation control and in-process condition diagnostics of grinding bodies are part of the process intended to increase performance, reduce expenses for production and improve the milling quality. To adjust the loading of feed and grinding bodies and to control the drum level of feed and grinding bodies, it is suggested to use the readings of a vibroacoustic sensor installed on the drum mill journal bearing housing. The amplitude change of the mill housing vibroacoustic oscillation with the frequency of grinding bodies hitting the housing shows the amount of materials in the milling chamber, which allows efficiently controlling the material flow into the chamber. This article considers the primary dependencies affecting the performance and power consumption of drum and tube mills and provides the methodological approaches to calculate the frequency characteristics of milling bodies hitting the mill drum housing and to promptly determine the average weighted diameter of milling bodies.

ELDAR ABDOLLOVICH KREMCHEEV AND DINARA ABDOLLOVNA KREMCHEEVA

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