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Dephosphorization of hot metal using rare earth oxide-containing slags

An innovative rare earth oxide-containing slag for hot metal dephosphorization was proposed, and the factors influencing the efficiency during the dephosphorization of hot metal using rare earth oxide-containing slags were also studied. An increase in the temperature up to 1,550°C is beneficial to t...

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Published in:High temperature materials and processes 2020-01, Vol.39 (1), p.520-526
Main Authors: Ye, Maolin, Xi, Xiaojun, Yang, Shufeng, Li, Jingshe, Wang, Feng
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Language:English
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description An innovative rare earth oxide-containing slag for hot metal dephosphorization was proposed, and the factors influencing the efficiency during the dephosphorization of hot metal using rare earth oxide-containing slags were also studied. An increase in the temperature up to 1,550°C is beneficial to the dephosphorization process, and the maximum degree of dephosphorization for slags containing 6 wt% rare earth oxides is 44.49%; further temperature increases would deteriorate the efficiency, and the degree of dephosphorization decreases to 37.38% at 1,600°C. An increase in the basicity of slags up to 3.0, and the rare earth oxide content up to 6 wt%, improves the dephosphorization efficiency; further increase in the basicity and rare earth oxide content, the efficiency has almost no change. It was also found that an increase in the quantity of slags is beneficial to the dephosphorization reaction.
doi_str_mv 10.1515/htmp-2020-0090
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source Walter De Gruyter: Open Access Journals
subjects Basicity
Dephosphorizing
double-layer graphite crucible
Efficiency
hot metal dephosphorization
rare earth oxide-containing slags
Rare earth oxides
Slag
title Dephosphorization of hot metal using rare earth oxide-containing slags
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