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

Tasuku Hamano; Masashi Horibe; Kimihisa Ito

doi:10.2355/isijinternational.44.263

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

Tasuku Hamano^*, Masashi Horibe, Kimihisa Ito

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

81 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: Fe_tO-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 language	English
Pages (from-to)	263-267
Number of pages	5
Journal	isij international
Volume	44
Issue number	2
DOIs	https://doi.org/10.2355/isijinternational.44.263
Publication status	Published - 2004
Externally published	Yes

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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10.2355/isijinternational.44.263

Cite this

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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.",

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AU - Horibe, Masashi

AU - Ito, Kimihisa

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N2 - 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.

AB - 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.

KW - Dissolution rate

KW - Hot-metal dephosphorization

KW - Lime

KW - Mass transport

KW - Slag

KW - Steelmaking

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

Abstract

Keywords

ASJC Scopus subject areas

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