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Measurements of heat loss and its distribution for theCOREX-3000 ironmaking process

Published online by Cambridge University Press:  23 April 2014

W. Shen ,
S.-L. Wu ,
K.-P. Du ,
M.-Y. Kou  and
Y. Sun
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Abstract

The accuracy of the parameters is of great importance in the calculation and simulationof the COREX process. Therefore, it is necessary to measure some parameters, especiallythe heat loss and its distribution, which have not been reported before. Based on thecharacteristics of the two sets of the Baosteel COREX-3000 process, a method and standardare established for the heat loss and its distribution. Then the heat loss anddistribution are calculated based on the measured parameters. The results show that thetotal heat loss of the two COREX processes is 495.4 MJ/tHM and 413.7 MJ/tHM. The heat losscaused by cooling water accounts for more than 93% of the total heat loss while the heatloss of furnace shells is less than 7%. The main heat loss caused by cooling water takesplace at the tap hole zone, which is also the part of the COREX system with the most heatloss Its heat loss is about 30% of the heat loss caused by cooling water and 28% of thetotal heat loss of the COREX system. The main heat loss of furnace shells takes place atthe dome of the melter-gasifier and the reducing gas entrance position of the shaftfurnace, where the heat loss accounts for nearly 90% of the heat loss of furnace shells.It is also found that the energy utilization efficiency of the 1# COREX system is muchlower than that of the 2# COREX system after comparison.

Keywords

COREX processmeasurement standardheat lossfurnace shellcooling water system
Type
Research Article
Information
Metallurgical Research & Technology , Volume 111 , Issue 2 , 2014 , pp. 75 - 84
Copyright
© EDP Sciences 2014

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