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Proceedings of the Ironmaking, Iron Ore and Agglomeration Seminars

ISSN 2594-357X

42º Seminário de Redução de Minério de Ferro e Matérias-primas / 13º Seminário Brasileiro de Minério de Ferro / 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

Jian, Pan
Jian, Pan

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De-qing, Zhu
De-qing, Zhu

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Eider.dutra,
Eider.dutra,

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Xian-lin., Zhou
Xian-lin., Zhou

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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 refer

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: 42º Seminário de Redução de Minério de Ferro e Matérias-primas / 13º Seminário Brasileiro de Minério de Ferro / 6th International Congress on the Science and Technology of Ironmaking, Rio de Jabeiro, 2012.
ISSN: 2594-357X , DOI 10.5151/2594-357X-22239