Kobe Steel verifies CO2 reduction process

Feb 16 2021

The results indicate that the technology can reduce CO2 emissions from blast furnaces by approximately 20% compared to a conventional method.

Kobe Steel has successfully demonstrated a technology that can reduce a significant amount of CO2 emissions from blast furnace operations. The demonstration test was conducted for a month at a large blast furnace (4,844 m3) of the Kakogawa Works in Hyogo Prefecture, Japan in October 2020.

The quantity of CO2 emissions from the blast furnace is determined by the reducing agent rate (RAR) or the quantity of carbon fuel used in blast furnace ironmaking. In the demonstration test, it was verified that RAR could be stably reduced from 518 kg/tHM (ton hot metal) to 415 kg/tHM by charging a large amount of hot briquetted iron (HBI) produced by the MIDREX® Process. The results indicate that this technology can reduce CO2 emissions by approximately 20% compared to a conventional method.

In addition, the world's lowest level of coke rate (239 kg/tHM) has been achieved in the demonstration test of this technology. The company sees it as a promising solution that could become readily available in the near future at a lower additional cost compared to other CO2 reduction measures.

ll of these technologies are developed by the KOBELCO Group as generic solution technologies applicable to various blast furnaces.

"We will keep improving this CO2 reduction solution technology while further reducing CO2 emissions and achieving lower costs for CO2 reduction," said the company. "Beyond our own efforts to reduce emissions from our facilities, we will strive to contribute to the acceleration of CO2 reduction through introducing this solution to blast furnaces around the world."

"In addition, we believe that the success of the demonstration test on an actual blast furnace has made a significant step forward in providing low CO2 steel products to customers."

Details of the results
Kobe Steel

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Issue 79 - Jan - Feb 2021

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