Improvement in Operational Efficiency of I BF by reduction of Coke Rate and Increase of Coal Rate
(Room 207A)
08 May 17
10:00 AM
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10:30 AM
Tracks:
Blast Furnace Operating Improvements
In the era of finished steel supply surpassing the demand and integrated steel plants from around the world eliminating the ironmaking process and switching to recycling of steel, sustenance of blast furnace ironmaking in itself is a challenge. The major factor that reduces the operational cost of a blast furnace is the segments of fuel, i.e., coke and coal rate, of the blast furnace. This study describes the paradigm shift in the operation of I Blast Furnace, the reduction of coke rate (coke consumption per ton of hot metal produced) from 440 kg/thm to 312 kg/thm, and subsequent increase of coal injection from 130 kg/thm to 219 kg/thm (lowest ever coke rate achieved by any blast furnace in the world with slag alumina over 17%), by process improvements with the available system, thereby making a recurring savings of approximately US$10 million per annum.