Abstract
The paper presents a multi-scale mathematical model of a complex multi-level drying process of lumped man-made wastes of apatite-nepheline ores. It takes into account heat-technological peculiarities of the burning conveyor machine, intensity of internal moisture transfer in the shell, negative phenomena of over-wetting of separate horizons of the moving dense multilayer mass of pellets and heat carrier gas. This makes it possible to increase energy efficiency by intensifying heat-mass exchanging multi-layer drying processes. An essential dependence of efficiency of using heat and electric energy from organization of thermal and aerodynamic mode of thermal treatment of pellets from wastes of apatite-nepheline ores on quality of obtained pellets is revealed. According to numerous computational experiments on the developed simulation model, it is shown that when drying a moving multilayer mass of pellets in the drying zone of the burning conveyor machine, moisture is redistributed along the height of the multilayer mass, as a result of which in certain areas the pellets are over-watered.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Bulletin of the Saint Petersburg State Institute of Technology (Technical University)
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
