A Novel Process for Separation of Magnetite and Phosphorous Phases from a CaO–SiO2–FeO–P2O5 Slag

Guoxuan Li; Jinshan Liang; Jun Long; Dong Guan; Zushu Li; Sridhar Seetharaman; Juncheng Li

doi:10.2355/ISIJINTERNATIONAL.ISIJINT-2021-578

A Novel Process for Separation of Magnetite and Phosphorous Phases from a CaO–SiO2–FeO–P2O5 Slag

Guoxuan Li, Jinshan Liang, Jun Long, Dong Guan, Zushu Li, Sridhar Seetharaman, Juncheng Li

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

2 Scopus citations

Abstract

Iron and phosphorus were successfully separated from CaO–SiO2–FeO–P2O5 slag through atmospheric control, B2O3 addition and a combination of magnetic separation and flotation. For the slag with basicity (CaO/SiO2) of 2.5 and B2O3 addition of 6% (weight percentage), iron and phosphorus in the slag were enriched in the form of magnetite (Fe3O4) and calcium phosphate (Ca10P6O25) phases respectively under Ar atmosphere. Using a combination of magnetic separation and flotation, the concentrates were obtained with Fe3O4 and P2O5 content of 92.84% and 37.66% respectively, corresponding to the recovery ratios of 85.8% for iron and 91.3% for phosphorus.

Original language	English (US)
Pages (from-to)	1556-1559
Number of pages	4
Journal	ISIJ International
Volume	62
Issue number	7
DOIs	https://doi.org/10.2355/ISIJINTERNATIONAL.ISIJINT-2021-578
State	Published - 2022

Keywords

B2O3 addition
atmospheric control
calcium phosphate
magnetite
steelmaking slag

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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title = "A Novel Process for Separation of Magnetite and Phosphorous Phases from a CaO–SiO2–FeO–P2O5 Slag",

abstract = "Iron and phosphorus were successfully separated from CaO–SiO2–FeO–P2O5 slag through atmospheric control, B2O3 addition and a combination of magnetic separation and flotation. For the slag with basicity (CaO/SiO2) of 2.5 and B2O3 addition of 6% (weight percentage), iron and phosphorus in the slag were enriched in the form of magnetite (Fe3O4) and calcium phosphate (Ca10P6O25) phases respectively under Ar atmosphere. Using a combination of magnetic separation and flotation, the concentrates were obtained with Fe3O4 and P2O5 content of 92.84% and 37.66% respectively, corresponding to the recovery ratios of 85.8% for iron and 91.3% for phosphorus.",

keywords = "B2O3 addition, atmospheric control, calcium phosphate, magnetite, steelmaking slag",

author = "Guoxuan Li and Jinshan Liang and Jun Long and Dong Guan and Zushu Li and Sridhar Seetharaman and Juncheng Li",

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T1 - A Novel Process for Separation of Magnetite and Phosphorous Phases from a CaO–SiO2–FeO–P2O5 Slag

AU - Li, Guoxuan

AU - Liang, Jinshan

AU - Long, Jun

AU - Guan, Dong

AU - Li, Zushu

AU - Seetharaman, Sridhar

AU - Li, Juncheng

PY - 2022

Y1 - 2022

N2 - Iron and phosphorus were successfully separated from CaO–SiO2–FeO–P2O5 slag through atmospheric control, B2O3 addition and a combination of magnetic separation and flotation. For the slag with basicity (CaO/SiO2) of 2.5 and B2O3 addition of 6% (weight percentage), iron and phosphorus in the slag were enriched in the form of magnetite (Fe3O4) and calcium phosphate (Ca10P6O25) phases respectively under Ar atmosphere. Using a combination of magnetic separation and flotation, the concentrates were obtained with Fe3O4 and P2O5 content of 92.84% and 37.66% respectively, corresponding to the recovery ratios of 85.8% for iron and 91.3% for phosphorus.

AB - Iron and phosphorus were successfully separated from CaO–SiO2–FeO–P2O5 slag through atmospheric control, B2O3 addition and a combination of magnetic separation and flotation. For the slag with basicity (CaO/SiO2) of 2.5 and B2O3 addition of 6% (weight percentage), iron and phosphorus in the slag were enriched in the form of magnetite (Fe3O4) and calcium phosphate (Ca10P6O25) phases respectively under Ar atmosphere. Using a combination of magnetic separation and flotation, the concentrates were obtained with Fe3O4 and P2O5 content of 92.84% and 37.66% respectively, corresponding to the recovery ratios of 85.8% for iron and 91.3% for phosphorus.

KW - B2O3 addition

KW - atmospheric control

KW - calcium phosphate

KW - magnetite

KW - steelmaking slag

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SN - 0915-1559

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A Novel Process for Separation of Magnetite and Phosphorous Phases from a CaO–SiO2–FeO–P2O5 Slag

Abstract

Keywords

ASJC Scopus subject areas

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