The Dissolution Rate of Solid Lime into Molten Slag Used for Hot-metal Dephosphorization

Tasuku Hamano, Masashi Horibe, Kimihisa Ito

Research output: Contribution to journalArticlepeer-review

70 Citations (Scopus)

Abstract

Highly efficient dissolution of CaO into melt has an important role in reducing the amount of steelmaking slag produced in the hot-metal dephosphorization process because the existence of free-CaO in the melt prevents reuse of the slag. There are numerous studies related to the rate of CaO dissolution, however, in many cases the experimental conditions have been limited. The present work measured the dissolution rate of CaO into several kinds of slags: FetO-CaO-SiO2-X (X; CaF2, CaCl2, Al2O3 and B2O3) systems at hot-metal temperatures. To apply the results to practical operations, the efficiency of additives in dissolving CaO in the melts was compared using "the enhancement factor" based on the results.

Original languageEnglish
Pages (from-to)263-267
Number of pages5
Journalisij international
Volume44
Issue number2
DOIs
Publication statusPublished - 2004
Externally publishedYes

Keywords

  • Dissolution rate
  • Hot-metal dephosphorization
  • Lime
  • Mass transport
  • Slag
  • Steelmaking

ASJC Scopus subject areas

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

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