Flow of a Granulated Mineral Material During Firing in a Rotating Furnace

Abstract

The behavior of a layer of material in a rotating furnace is considered in the context of mechanics of continuous media. Variations in the volume weight of the material layer are analyzed depending on the temperature in different furnace zones. It is found that elementary physicochemical processes in mineral granules generate surface forces in the layer of material that significantly influence the translational velocity of the granules along the furnace. It is established that the layer of granules during firing moves along the furnace length in waves (the Riemann waves). Different geometrical profiles of rotating furnaces are estimated.