Fig. 3: CO2 emission reduction ratios to the 2 °C target requirements in the iron and steel sector based on the inherent potential of waste streams integrated with internally funded carbon capture and storage.
From: Decarbonising the iron and steel sector for a 2 °C target using inherent waste streams
By Pathways 5 (BFS-Glassy/Dry+SS-Crystalline/Dry) and 6 (BFS-Glassy/Dry+SS-Crystalline/Dry-R) alone, 20.0% and 28.5% CO2 emission reductions to the 2 °C target requirements in refs. 4,5 in the iron and steel sector can be realised in 2050 (light orange colour). BFS and SS represent blast furnace slag and steel slag, respectively. When Pathways 5 and 6 are deeply integrated with CCS (carbon capture and storage) based on capital and material flows, equivalent CO2 emission reduction to the 2 °C target requirements in refs. 4,5 can be realised before 2050 (2045 and 2042 based on Pathway 5 + CCS and Pathway 6 + CCS, respectively) (dark orange colour).
