ABSTRACT
Jet mill is widely provided in mining, chemical, ceramics and chemistry industries, where the pure fine products are used. Fine grinding is the most power-intensive preparation enrichment process in technological closed cycle. Therefore it is important to create grinding control systems for a mill productivity improvement and power consumption reduction. In this study the critical level of fine grinding power consumption is determined, that make Rittinger’s hypothesis more exact for fine grinding. The numerical experiments on developed simulation dynamic model of the closed cycle demonstrate that use the grinding effectiveness ratio K, connected with the product size composition, can improve the mill productivity on 5,5%. The paper shows the possibilities to use information technologies for the grinding mode control and grinding power intensity on the basis of acoustic monitoring results. The sell model of jet grinding process differs from well known process models by description of mill operating condition according to the acoustic signal characteristics. The review of some developed grinding optimization methods is defined. They are based on the established connections of acoustic signal characteristics of grinding zone and technological process parameters. The results of theoretical study are proved on industrial mining plant of Ukraine.
