Effects of minor elements to the liquidus temperatures of blast furnace slags

Mao Chen, Weidong Zhang, Zhixing Zhao, Tim Evans, Baojun Zhao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The effects of minor elements TiO2, MnO, Na2O, K2O, CaS, and B2O3 to the liquidus temperatures of blast furnace slags were experimentally studied. The base blast furnace slag composition in SiO2-Al2O3-CaO-MgO system is fixed at CaO/SiO2=1.1, 16 wt% Al2O3 and 8 wt% MgO. The liquidus temperatures of the synthetic slags have been determined by high temperature equilibration, quenching and Electron Probe X-ray Microanalysis (EPMA) techniques. It was found that within the present investigated composition ranges, the additions of minor elements to the BF slags remain in melilite primary phase field. The minor element decrease the liquidus temperatures of the blast furnace slags in different extents and follows the tendency: B2O3 > CaS > Na2O > K2O > "TiO2" > MnO. The present measurements were also compared with FactSage predictions.

Original languageEnglish
Pages (from-to)2156-2160
Number of pages5
JournalISIJ International
Volume56
Issue number12
DOIs
Publication statusPublished - 2016
Externally publishedYes

Keywords

  • liquidus temperature
  • minor elements
  • BF slags
  • FactSage prediction

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