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Proceedings of the Ironmaking, Iron Ore and Agglomeration Seminars

ISSN 2594-357X

42nd ABM Ironmaking Seminar / 13rd ABM Iron Ore Symposium / 6th International Congress on the Science and Technology of Ironmaking — Vol. 6, Num. 6 (2012)

Title

IMPROVING THE GRANULATING AND SINTERING PERFORMANCE BY PRETREATING SPECULARITE CONCENTRATES THROUGH MECHANICAL ACTIVATION

IMPROVING THE GRANULATING AND SINTERING PERFORMANCE BY PRETREATING SPECULARITE CONCENTRATES THROUGH MECHANICAL ACTIVATION

Authorship

JIAN, PAN; DE-QING, ZHU; EIDER.DUTRA, ; XIAN-LIN., ZHOU

Pan Jian
JIAN, PAN

I am this author

Zhu De-qing
DE-QING, ZHU

I am this author

Eider.dutra,
EIDER.DUTRA,

I am this author

Zhou Xian-lin.
XIAN-LIN., ZHOU

I am this author

DOI

10.5151/2594-357X-22239

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Abstract

In this paper, the pretreatment of specularite concentrates through mechanical activation was present to improve the granulation of blends comprising some 10%-30% specularite concentrates and enhance the sintering performance. It is shown that the content of +3 mm fractions of granulation mixture and sinter mixture permeability are elevated by 10% and 35%. In the meantime, a sinter productivity increase from 1.51 to 1.62t.m-2.h-1 is attainted with similar sinter tumble index and at lower coke rate. The mechanism of the pretreatment of concentrates process to improve sintering performance was demonstrated from mineralogy analysis that better permeability and improved reactivity which help to form more calcium ferrite and good microstructure of sinter, further proven by the better metallurgical performance of sinter.

 

In this paper, the pretreatment of specularite concentrates through mechanical activation was present to improve the granulation of blends comprising some 10%-30% specularite concentrates and enhance the sintering performance. It is shown that the content of +3 mm fractions of granulation mixture and sinter mixture permeability are elevated by 10% and 35%. In the meantime, a sinter productivity increase from 1.51 to 1.62t.m-2.h-1 is attainted with similar sinter tumble index and at lower coke rate. The mechanism of the pretreatment of concentrates process to improve sintering performance was demonstrated from mineralogy analysis that better permeability and improved reactivity which help to form more calcium ferrite and good microstructure of sinter, further proven by the better metallurgical performance of sinter.

Keywords

Sintering; Specularite concentrates; Pretreatment of concentrates; Mechanical activation.

Sintering; Specularite concentrates; Pretreatment of concentrates; Mechanical activation.

How to cite

Jian, Pan; De-qing, Zhu; Eider.dutra, ; Xian-lin., Zhou. IMPROVING THE GRANULATING AND SINTERING PERFORMANCE BY PRETREATING SPECULARITE CONCENTRATES THROUGH MECHANICAL ACTIVATION, p. 1379-1388. In: 42nd ABM Ironmaking Seminar / 13rd ABM Iron Ore Symposium / 6th International Congress on the Science and Technology of Ironmaking, Rio de Jabeiro, 2012.
ISSN: 2594-357X, DOI 10.5151/2594-357X-22239