Beneficial reuse of EAF slag and its leaching behavior of Cr

Dai Xiu Wei; An Jun Xu; Dong Feng He; Nai Yuan Tian; Quan Yang

Beneficial reuse of EAF slag and its leaching behavior of Cr

Dai Xiu Wei, An Jun Xu, Dong Feng He, Nai Yuan Tian, Quan Yang

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

Abstract

The structure and properties of EAF slag and it's leaching behavior of Cr were studied. The results indicate that the main minerals in the EAF slag are Ca ₂SiO ₄, Ca ₃Mg(SiO ₄) ₂ and MgCr ₂O ₄. The content of Cr ₂O ₃ in EAF slag is 2.92%. The slag are suitable for beneficial reuse, but metals in EAF slag are distributed evenly among every particle size. The leaching tests of Cr in slag show that the ratio of Cr leaching rate from slag in deionized water was inversely-proportional to particle size, and directly proportional to leaching time and liquid to solid ratio. Electromagnetic stirring improve the kinetic condition and improve Cr leaching rate. In deionized water, the percentage of Cr(VI) is higher than 50% in all the Cr leached from EAF slag. In acid solution, the volume of Cr leaching from slag increases but all the Cr are in the form of Cr(III).

Original language	English
Pages (from-to)	92-96
Number of pages	5
Journal	Kang T'ieh/Iron and Steel
Volume	47
Issue number	10
Publication status	Published - 2012 Oct
Externally published	Yes

Keywords

Beneficial reuse
Cr
EAF slag
Leaching behavior

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Cite this

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title = "Beneficial reuse of EAF slag and its leaching behavior of Cr",

abstract = "The structure and properties of EAF slag and it's leaching behavior of Cr were studied. The results indicate that the main minerals in the EAF slag are Ca 2SiO 4, Ca 3Mg(SiO 4) 2 and MgCr 2O 4. The content of Cr 2O 3 in EAF slag is 2.92%. The slag are suitable for beneficial reuse, but metals in EAF slag are distributed evenly among every particle size. The leaching tests of Cr in slag show that the ratio of Cr leaching rate from slag in deionized water was inversely-proportional to particle size, and directly proportional to leaching time and liquid to solid ratio. Electromagnetic stirring improve the kinetic condition and improve Cr leaching rate. In deionized water, the percentage of Cr(VI) is higher than 50% in all the Cr leached from EAF slag. In acid solution, the volume of Cr leaching from slag increases but all the Cr are in the form of Cr(III).",

keywords = "Beneficial reuse, Cr, EAF slag, Leaching behavior",

author = "Wei, {Dai Xiu} and Xu, {An Jun} and He, {Dong Feng} and Tian, {Nai Yuan} and Quan Yang",

year = "2012",

month = oct,

language = "English",

volume = "47",

pages = "92--96",

journal = "Kang T'ieh/Iron and Steel (Peking)",

issn = "0449-749X",

publisher = "Chinese Society for Metals",

number = "10",

}

TY - JOUR

T1 - Beneficial reuse of EAF slag and its leaching behavior of Cr

AU - Wei, Dai Xiu

AU - Xu, An Jun

AU - He, Dong Feng

AU - Tian, Nai Yuan

AU - Yang, Quan

PY - 2012/10

Y1 - 2012/10

N2 - The structure and properties of EAF slag and it's leaching behavior of Cr were studied. The results indicate that the main minerals in the EAF slag are Ca 2SiO 4, Ca 3Mg(SiO 4) 2 and MgCr 2O 4. The content of Cr 2O 3 in EAF slag is 2.92%. The slag are suitable for beneficial reuse, but metals in EAF slag are distributed evenly among every particle size. The leaching tests of Cr in slag show that the ratio of Cr leaching rate from slag in deionized water was inversely-proportional to particle size, and directly proportional to leaching time and liquid to solid ratio. Electromagnetic stirring improve the kinetic condition and improve Cr leaching rate. In deionized water, the percentage of Cr(VI) is higher than 50% in all the Cr leached from EAF slag. In acid solution, the volume of Cr leaching from slag increases but all the Cr are in the form of Cr(III).

AB - The structure and properties of EAF slag and it's leaching behavior of Cr were studied. The results indicate that the main minerals in the EAF slag are Ca 2SiO 4, Ca 3Mg(SiO 4) 2 and MgCr 2O 4. The content of Cr 2O 3 in EAF slag is 2.92%. The slag are suitable for beneficial reuse, but metals in EAF slag are distributed evenly among every particle size. The leaching tests of Cr in slag show that the ratio of Cr leaching rate from slag in deionized water was inversely-proportional to particle size, and directly proportional to leaching time and liquid to solid ratio. Electromagnetic stirring improve the kinetic condition and improve Cr leaching rate. In deionized water, the percentage of Cr(VI) is higher than 50% in all the Cr leached from EAF slag. In acid solution, the volume of Cr leaching from slag increases but all the Cr are in the form of Cr(III).

KW - Beneficial reuse

KW - Cr

KW - EAF slag

KW - Leaching behavior

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VL - 47

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JO - Kang T'ieh/Iron and Steel (Peking)

JF - Kang T'ieh/Iron and Steel (Peking)

SN - 0449-749X

IS - 10

ER -

Beneficial reuse of EAF slag and its leaching behavior of Cr

Abstract

Keywords

ASJC Scopus subject areas

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