Abstract
In this study, metallurgical and gasification slags mixed at a specific composition were heated to a slag discharge temperature range (i.e., tap out temperatures in iron & steelmaking) in the presence of CO2, resulting in a reaction generating energy — enough to convert CO2 to CO which can be used in other processes such as ore reduction, gas turbine power generation, and synthetic liquid/gaseous fuel production. Computational simulations suggested that the generation of H2 from H2O would also be possible using the same mixed slag approach at no additional heat supply. Energy generated from the reaction remains largely in excess after conversion (CO2 to CO), which can be utilized independently for or support other processes. Furthermore, a final slag volume is expected to decrease to about 30%, dramatically decreasing landfill burden.
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Nakano, J., Bennett, J., Nakano, A. (2016). Energy Generation from Waste Slags: Beyond Heat Recovery. In: Kirchain, R.E., et al. REWAS 2016. Springer, Cham. https://doi.org/10.1007/978-3-319-48768-7_19
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DOI: https://doi.org/10.1007/978-3-319-48768-7_19
Publisher Name: Springer, Cham
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