Structural and dynamic characteristics of technological power unit for heat treatment of vermiculite concentrates

Abstract

The considered electric furnace with a mobile base is the most innovative power unit providing energy consumption of 48…52 mJ/m3 during the process of vermiculite firing which has never been achieved before. New power unit was developed for all mechanical shortcomings of the test prototype were eliminated. By eliminating the resonating base plate and switching to the platform with forced excitation of its vibrations, the influence of fluctuations in the excitation frequency of the oscillatory system on its technological parameters, ensuring the duration of vermiculite heat treatment, has been eliminated. The activity of high sensitivity of the oscillations of the base platform to the change in friction, which appears during operation, is also completely removed. In addition, the problem of a controlled and regulated vibrational method of supplying raw materials to the furnace without the use of drum doses has been solved. It simplifies the design and cost of new power units, which are characterized by doubled productivity and dynamic balance.