Given the data condition of the case substitution analysis

Fig. 2. The industrial L-Mimosine of solid waste/byproducts in an ISM.Figure optionsDownload full-size imageDownload as PowerPoint slide
Fig. 3. The industrial symbiosis of gaseous waste/byproducts in an ISM (E.G., exhaust gas; Elec., electricity).Figure optionsDownload full-size imageDownload as PowerPoint slide
Fig. 4. The industrial symbiosis of recovery and cascade use of sensible heat in an ISM.Figure optionsDownload full-size imageDownload as PowerPoint slide
4. Results
4.1. CO2 emissions of the ISM
As shown in Fig. 5, the CO2 emissions of the ISM in our case were 2128.9 kg CO2/tcs (ton of crude steel), which was at the medium level according to references (Bai et?al., 2010, Birat et?al., 1999, Jiang et?al., 2009 and Zhang et?al., 2010). Blast furnace equipped with corresponding auxiliary and symbiotic processes accounted for the largest CO2 emissions, followed by sinter strand, coke oven, and rolling machine equipped with corresponding auxiliary and symbiotic processes. CO2 emission reduction from symbiotic measures equipped with core production processes, i.e. coke oven, BF, BOF, and casting machine, accounted for 65.3%, 35.3%, 50.2%, and 96.4% of the direct and indirect CO2 emissions of the corresponding core production processes, respectively.