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Role of Research in Non-ferrous Metallurgy Development—Peter Hayes’ Contributions to Modern Pyrometallurgy Read chapter Read first chapter

2018 | OriginalPaper | Chapter

Reaction Behavior of Phosphorus in Multi-phase CaO–FeOX–SiO2–P2O5 Flux System

Authors : Xiao Yang, Hiroyuki Matsuura, Fumitaka Tsukihashi

Published in: Extraction 2018

Publisher: Springer International Publishing

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Abstract

Calcium oxide is one of the major fluxing agents used for steel refining. Because unreacted CaO remains in slag in most cases, discharged slag is difficult to be recycled smoothly. With the growth of environmental concerns, improving utilization efficiency of CaO is required to reduce the amount of discharged slag and energy consumption. The authors have reported a resource and energy-saving process by using multi-phase flux for dephosphorization. Reaction behavior of phosphorus in multi-phase CaO–FeOX–SiO2–P2O5 flux system was investigated. Formation mechanism of P2O5-rich phases was clarified at the interface between solid CaO or 2CaO·SiO2 and molten CaO–FeOx–SiO2–P2O5 slag. Phase relationship and thermodynamic properties of 2CaO·SiO2-3CaO·P2O5 solid solution were observed to confirm the condensation of P2O5 in solid phase. Based on these results, reduction of CaO consumption, discharged slag curtailment, and energy-saving effects in the novel refining process by using multi-phase flux were discussed.

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previous chapter Calciothermic Reduction and Electrolysis of Sulfides in CaCl2 Melt
next chapter Microanalysis and Experimental Techniques for the Determination of Multicomponent Phase Equilibria for Non-ferrous Smelting and Recycling Systems
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Metadata
Title
Reaction Behavior of Phosphorus in Multi-phase CaO–FeOX–SiO2–P2O5 Flux System
Authors
Xiao Yang
Hiroyuki Matsuura
Fumitaka Tsukihashi
Copyright Year
2018
Book
Extraction 2018

Print ISBN: 978-3-319-95021-1

Electronic ISBN: 978-3-319-95022-8

Copyright Year: 2018

DOI
https://doi.org/10.1007/978-3-319-95022-8_61

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