Journal of University of Science and Technology Beijing. 2014, (01) Core

Characterization method for assimilation reactions between iron ores and CaOChinese Full Text

WANG Chong-mao;WU Keng;SHE Yuan;ZHAO Yong;WANG Meng;DU Rui-ling;State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing;The Second Factory of Steel-Making Plant of WISCO;Shougang Institute of Technology;

Abstract: The lowest assimilation temperature is usually used as a terminal system index to characterize assimilation reactions between iron ores and CaO. However,this characterization does not take into account assimilation speed and heating rate. In order to adopt several indexes to evaluate the characteristics of the assimilation reactions,this article introduces an assimilation characteristic parameter by adopting the Van’t Hoff’s law and making full use of data obtained in the high temperature assimilation process of iron ores. The characteristic parameter,which considers assimilation speed,heating rate,assimilation temperature and the effect of temperature on assimilation speed,can characterize assimilation reactions between iron ores and CaO,including assimilation starting temperature,assimilation time,assimilation finishing temperature,etc. Moreover,it is based on the practical production temperature of sintering ores. Because of integrating much more important information in the assimilation process of iron ores,this parameter can comprehensively reflect the assimilation properties of iron ores. Although the same or similar results are obtained by the two methods,compared with the conventional method by only considering the lowest assimilation temperature,the new method can find out assimilability differences of different iron ores in further analysis.

Keywords：

iron ores; ore sintering; calcium oxide; assimilation; characterization;

DOI：
10.13374/j.issn1001-053x.2014.01.003
Series：
Subject：
Classification Code：
TF046.4

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Characterization method for assimilation reactions between iron ores and CaOChinese Full Text

WANG Chong-mao;WU Keng;SHE Yuan;ZHAO Yong;WANG Meng;DU Rui-ling;State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing;The Second Factory of Steel-Making Plant of WISCO;Shougang Institute of Technology;

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