With this approach, reducing CO2 emissions per ton requires 95 kg of H2, so the cost of zero-carbon H2 leads to higher costs associated with the production of low carbon steel. Replacing reducing agents such as coke with hydrogen in a converter blast furnace requires 27.5 kg of hydrogen per tonne of HM production, which would reduce carbon emissions by 21.4%.
Commercially available technologies and new technologies offer the opportunity to significantly reduce or even eliminate emissions from the steel industry. Opportunities to further reduce CO2 emissions from modern steelmaking processes are limited, but emissions can be controlled and further reduced to some extent by continually striving to improve material and energy efficiency. To get knowledge about the low-carbon emissions steel making technology you can check various websites.
Steel production from scrap metal can be valuable in terms of reducing energy consumption and CO2 emissions, as it is significantly less energy-intensive than primary production from iron ore. One method for the production of mild steel is the direct reduction of iron ore using hydrogen derived from clean electricity, also known as green hydrogen, and its subsequent processing in an electric arc furnace, also powered by green electricity.
This low-carbon steel is produced using technologies and methods that result in significantly lower emissions than conventional production. However, while injecting (green) hydrogen into blast furnaces can reduce carbon emissions by 20%, it does not ensure carbon-neutral steel production, as conventional coking coal is still a necessary reducing agent in blast furnaces.