COMPUTATION OF HEAT AND MASS DISTRIBUTION IN SINTER LAYER BASED ON PDEs

Abstract

The article presents mathematical model of interconnected physical processes on sintering machine during agglomeration of iron ore pellets. The mathematical model uses a system of partial differential equations. Velocity of the horizontal movement of the layer and the vertical velocity of the air movement through the layer as well as phase transition and simple chemical reactions of pellet and air components are taken into account in this model. The purpose of simulation is to determine the time dependency of sinter temperature distributed along the length and height of the layer and then define rational parameters for optimization of metallurgical process. In addition, concentration of sinter and gas components distributed along the height of the layer is computed. The numerical experiment shows that temperature front, which is lower in the layer cross-section, is sharper in comparison with the upper front, where the obtained agglomerate is cooled, as water requires a considerable amount of energy to evaporate. The obtained results are qualitatively consistent with the data in scientific literature.

Multithreaded Acceleration of 3D Mathematical Model for Ore Sintering

“…In the previous paper [3], the author considered a problem of heat and mass transfer in a two-dimensional statement. However, a three-dimensional statement better fits agglomeration process due to simultaneous movement of a sinter layer on an agglomeration machine and the air through the layer.…”

“…The mathematical model [3] is considered at 3-dimensional statement and is improved by adding a boundary condition, that corresponds to the Newton's law of cooling and heat radiation from the walls of the pallets, because a temperature of the wall often can be greater than 800 o C [22]:…”