期刊
ISIJ INTERNATIONAL
卷 53, 期 12, 页码 2013-2017出版社
IRON STEEL INST JAPAN KEIDANREN KAIKAN
DOI: 10.2355/isijinternational.53.2013
关键词
sintering; specularite concentrates; pretreatment of concentrates; mechanical activation
In this paper, the pretreatment of specularite concentrates through roller press was present to improve the granulation of blends comprising some 10-30% specularite concentrates and enhance the sintering performance. It was shown that the content of +3 mm fractions of granulation mixture is elevated by 10% and the sinter mixture permeability is elevated by 35%. In the meantime, a sinter tumble index increasing from 62.00 to 64.13% was attainted with similar sinter productivity and at lower fuel rate. The mechanism of the pretreating 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.
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