The accuracy of the parameters is of great importance in the calculation and simulation
of the COREX process. Therefore, it is necessary to measure some parameters, especially
the heat loss and its distribution, which have not been reported before. Based on the
characteristics of the two sets of the Baosteel COREX-3000 process, a method and standard
are established for the heat loss and its distribution. Then the heat loss and
distribution are calculated based on the measured parameters. The results show that the
total heat loss of the two COREX processes is 495.4 MJ/tHM and 413.7 MJ/tHM. The heat loss
caused by cooling water accounts for more than 93% of the total heat loss while the heat
loss of furnace shells is less than 7%. The main heat loss caused by cooling water takes
place at the tap hole zone, which is also the part of the COREX system with the most heat
loss Its heat loss is about 30% of the heat loss caused by cooling water and 28% of the
total heat loss of the COREX system. The main heat loss of furnace shells takes place at
the dome of the melter-gasifier and the reducing gas entrance position of the shaft
furnace, 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 much
lower than that of the 2# COREX system after comparison.