THERMODYNAMICS MODELING OF IRON OXIDE REDUCTION BY HYDROGEN FROM THE B2O3-CaO-FeO MELT IN BUBBLED LAYER

ABSTRACT. Studying gas interaction process during the barbotage at the multi-component oxide melt with the purpose of testing the selective extraction possibility is of both scientific and practical interest. The solution of this problem within the scope of the complex solution of the rational raw material resources development problem is of especial interest for the Urals and for the Sverdlovsk region in particular. The processes mentioned above are the heterogeneous ones and go through the number of sequential stages. Each stage can be limiting one and influence the overall process. However despite of the mode of the reaction its speed depends on the chemical composition of the gas contained in the bubbles that rise in the melt. If the bubble resides in the melt for long enough time, the equilibrium is reached inside it, and the processes of gas interaction with melt stop. The model allowing to give a qualitative description of process kinetics on the basis of thermodynamic equilibrium calculations has been developed by the authors. This model has been used to describe interaction between hydrogen and B2O3-CaO-FeO melt at various temperatures tha