KINETIC ANALYSIS OF DEFOSPHORATION PROCESS OF SYNTHETICAL OXIDE MELTS
https://doi.org/10.17073/0368-0797-2014-7-5-9
Abstract
The distribution of phosphorus between gaseous phase and liquid oxide melt was investigated in order to determine the ability of gaseous dephosphorization of oxide melts CaO – SiO2 – MgO – Al2O3 – P2O5. The influence of different factors, such as basicity (CaO/SiO2 ) and CO/CO2 ratio in the barbotage gas, on the distribution of phosphorus between gaseous phase and liquid oxide melt was clarified during the experiments. It was carried out, that the most effective evaporation of phosphorus is observed under condition of basisity B = 0,5. Under the higher basisity the phosphorus evaporation meets difficulties connected with thermodynamics, and when basisity is low (less than 0.5) the oxide melt is too viscous. The calculation of activation energy was carried out. It was obtained empirically as 140 kJ/mol, which corresponds with liquid phase diffusion as a limit stage of process.
About the Authors
I. A. Krasnyanskaya
National Research Technological University MISIS (Leninskii pr., 4, Moscow, 119049, Russia)
Russian Federation
Russian Federation
Software Engineer
G. S. Podgorodetskii
National Research Technological University MISIS (Leninskii pr., 4, Moscow, 119049, Russia)
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Head of the Chair “Extraction and recycling of ferrous metals”
S. N. Paderin
National Research Technological University MISIS (Leninskii pr., 4, Moscow, 119049, Russia)
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Prof. of the Chair “Extraction and recycling of ferrous metals”, Science Advisor of General Director
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Review
For citations:
Krasnyanskaya I.A., Podgorodetskii G.S., Paderin S.N. KINETIC ANALYSIS OF DEFOSPHORATION PROCESS OF SYNTHETICAL OXIDE MELTS. Izvestiya. Ferrous Metallurgy. 2014;57(7):5-9. (In Russ.) https://doi.org/10.17073/0368-0797-2014-7-5-9
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