Thermodynamics of the 2cao∙Sio2-3cao·P2O5 solid solution at steelmaking temperature

Hiroyuki Matsuura, Ming Zhong, Xu Gao, Fumitaka Tsukihashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Recently the application of CaO-based multi-phase flux has received much attention and thus various physicochemical properties of the CaO-FeO-SiO2 slags have been investigated. In the present paper, the thermodynamic properties of the 2CaO·SiO2-3CaO·P2O5 solid solution which is the main solid phase constituting the multi-phase flux were studied. The activity of P2O5 was measured by the chemical equilibration method between molten iron and the solid solution, the solid solution and CaO mixture, or the solid solution and MgO mixture at 1823 and 1873 K with low oxygen partial pressure. The activities of P2O5, 3CaO·P2O5 and 3MgO·P2O5 were calculated by analyzed compositions and reported thermodynamic data. The activity of P2O5, 3CaO·P2O5 or 3MgO·P2O5·increased with the increase of 3CaO·P2O5 content in the solid solution.

Original languageEnglish
Title of host publicationAdvances in Molten Slags, Fluxes, and Salts
Subtitle of host publicationProceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016
EditorsRamana G. Reddy, Pinakin Chaubal, P. Chris Pistorius, Uday Pal
PublisherSpringer International Publishing AG
Pages1389-1395
Number of pages7
ISBN (Print)9783319486253
DOIs
Publication statusPublished - 2016
Event10th International Conference on Molten Slags, Fluxes and Salts, MOLTEN 2016 - Seattle, United States
Duration: 2016 May 222016 May 25

Publication series

NameAdvances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016

Conference

Conference10th International Conference on Molten Slags, Fluxes and Salts, MOLTEN 2016
CountryUnited States
CitySeattle
Period16/5/2216/5/25

Keywords

  • Dephosphorization
  • Multi-phase flux
  • Steelmaking
  • Thermodynamics

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

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