Experimental Study on the Pulverization and Reduction Behavior of Sinter in Oxygen Blast Furnace

Using the facility of reduction experiment, the low temperature reduction pulverization and reduction behavior of sinter in oxygen blast furnace (OBF) were studied. Through analyzing the results, the difference of pulverization and reduction behavior of sinter in OBF and conventional blast furnace (...

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Published in:AIP conference proceedings 2012-03
Main Authors: Han, Yihua, Wang, Jingsong, Lan, Rongzong, Wang, Lintao, Zuo, Xiaojian, Xue, Qingguo
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Language:English
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Blast furnaces
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Wang, Jingsong
Lan, Rongzong
Wang, Lintao
Zuo, Xiaojian
Xue, Qingguo
description Using the facility of reduction experiment, the low temperature reduction pulverization and reduction behavior of sinter in oxygen blast furnace (OBF) were studied. Through analyzing the results, the difference of pulverization and reduction behavior of sinter in OBF and conventional blast furnace (BF) were discussed. Furthermore, the effect laws of reduction temperature and the content of CO and H2 on reduction behavior of sinter were studied. Also the controlling step of iron oxide reduction was discussed. The results showed that compared with BF, the low temperature reduction pulverization of sinter became serious at 773K, reduction rate became faster at 1173K, reduction time became less and final reduction degree was increased in OBF. With increasing of H2 and CO contents, the reduction of sinter was promoted. The reduction process is controlled by interface chemical reaction at the earlier stage and by interface chemical reaction and internal diffusion at the final stage.
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subjects Blast furnaces
title Experimental Study on the Pulverization and Reduction Behavior of Sinter in Oxygen Blast Furnace
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