EXPERIMENTAL INVESTIGATION OF PHOSPHORUS BEHAVIOUR IN CaO – SiO2 – MgO – Al2O3 – P2O5 OXIDE SYSTEM
https://doi.org/10.17073/0368-0797-2014-5-41-46
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 observed, that the main factor infl uenced on the evaporation of phosphorus is the basicity. Under condition of low basicity (1.0 and less) gas dephosphoration of oxide melts was observed. The calculation of CaO and SiO2 activities was carried out using the regular solution model. The activity of CaO is less than activity of SiO2 when the basicity is less than 1.05, and it confi rms the ability of P2O5 replacement from CaO·P2O5 compound and as a result the gasification of phosphorus.
About the Authors
I. A. Krasnyanskaya
National University of Science and Technology “MISIS” (MISIS) (Moscow, Russia)
Russian Federation
Software Engineer
Russian Federation
Software Engineer
G. S. Podgorodetskij
National University of Science and Technology “MISIS” (MISIS) (Moscow, Russia)
Russian Federation
Cand. Eng., Head of Chair “Extraction and recycling of ferrous metals”
Russian Federation
Cand. Eng., Head of Chair “Extraction and recycling of ferrous metals”
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Review
For citations:
Krasnyanskaya I.A., Podgorodetskij G.S. EXPERIMENTAL INVESTIGATION OF PHOSPHORUS BEHAVIOUR IN CaO – SiO2 – MgO – Al2O3 – P2O5 OXIDE SYSTEM. Izvestiya. Ferrous Metallurgy. 2014;57(5):41-46. (In Russ.) https://doi.org/10.17073/0368-0797-2014-5-41-46
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