Preliminary communication

Developing model of mass-exchange processes in porous bodies on example of iron-ore pellets oxidation process

Sv. S. Kvon ; Karaganda State Technical University, Karaganda, Kazakhstan
T. S. Filippova ; Karaganda State Technical University, Karaganda, Kazakhstan
H. I. Malashkevichute ; Karaganda State Technical University, Karaganda, Kazakhstan

Abstract

There is developed a model of magnetite oxidation in agglomeration of iron-ore pellets. Unlike the oxidation models proposed before, this model considers the porous structure of a pellet: the surface and the distribution of pores by sizes. The process of magnetite oxidation is considered as three-unit: diffusion by pores, diffusion through products of oxidation and proper chemical reaction. The model considers various limiting steps at different stages of the process. There were carried out pilot studies on the basis of SSMCC pellets for confirming the correctness of the proposed model. This model can be used in a broader aspect: for the description of the process of chemical reaction in polyporous bodies.

Keywords

Iron-ore pellets porous body; pores distribution by sizes; magnetite oxidation; diffusion efficient coefficient; chemical reaction

Hrčak ID:

146495

URI

https://hrcak.srce.hr/146495

Publication date:

1.4.2016.

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