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Thermodynamic modeling of iron oxide reduction by hydrogen from the B 2 O 3 ‐CaO‐FeO melt in bubbled layer
Author(s) -
Dmitriev Andrey N.,
Vusikhis Alexander S.,
Sitnikov Vladimir A.,
Leontiev Leopold I.,
Kudinov Dmitriy Z.
Publication year - 2008
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1560/ijc.47.3-4.299
Subject(s) - chemistry , hydrogen , process (computing) , oxide , thermodynamics , thermodynamic equilibrium , chemical equilibrium , organic chemistry , physics , computer science , operating system
Study of the gas interaction process with the multicomponent oxide melt during barbotage with the purpose of testing the selective extraction possibility, is of interest from scientific and practical points of view. The solution of this problem within the scope of the complex decisions of the problem of rational resource development is of especial interest for the Urals, and for the Sverdlovsk region in particular. The processes mentioned above are heterogeneous ones and go through a number of sequential stages. Each stage can be limiting and can influence the overall process. However, despite the mechanism of the reaction its rate depends on the chemical composition of the gas contained in the bubbles that move in the melt. If the bubbles are in the melt for a long enough time, equilibrium is reached inside it and the process of gas interaction with melt is stopped. A model giving a qualitative description of the process of kinetics on the basis of thermodynamic equilibrium calculations has been developed by the authors. This model has been used for describing interaction between hydrogen and B 2 O 3 ‐CaO‐FeO melt at various temperatures. This model has allowed us to analyze the process course and to consider temperature influence on such characteristics as melt component concentrations and their changes during process, the final gas composition, and other characteristics without any experiments.