The future of direct reduction iron (DRI) produced by gas compared with coal depends on various factors, such as the availability and cost of natural gas, the environmental impact of coal use, the quality and efficiency of the DRI process, and the demand for low-carbon steel products.
According to some sources, gas-based DRI has some advantages over coal-based DRI, such as:
- Gas-based DRI has lower greenhouse gas emissions than coal-based DRI, as natural gas has a lower carbon intensity than coal. Gas-based DRI can also be combined with carbon capture and storage (CCS) or carbon capture and utilization (CCU) technologies to further reduce its carbon footprint.
- Gas-based DRI can produce higher quality iron with lower impurities and higher metallization than coal-based DRI, which can improve the performance and efficiency of electric arc furnaces (EAFs) that use DRI as a feedstock.
- Gas-based DRI can achieve higher productivity and energy efficiency than coal-based DRI, as natural gas has a higher heating value and lower moisture content than coal. Gas-based DRI can also use waste heat recovery systems to generate electricity or cooling for the process.
By : Vinnay DALMIA
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