Waste Heat Recovery from Blast Furnace Slag by Chemical Reactions |
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Authors: | Yuelin Qin Xuewei Lv Chenguang Bai Guibao Qiu Pan Chen |
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Affiliation: | 1. School of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
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Abstract: | Blast furnace (BF) slag, which is the main byproduct in the ironmaking process, contains large amounts of sensible heat. To recover the heat, a new waste heat-recovery system??granulating molten BF slag by rotary multinozzles cup atomizer and pyrolyzing printed circuited board with obtained hot BF slag particle??was proposed in this study. The feasibility of the waste heat-recovery system was verified by dry granulation and pyrolyzation experiments. The energy of hot BF slag could be converted to chemical energy through the pyrolysis reaction, and a large amount of combustible gas like CO, H2, C m H n , and CH4 can be generated during the process. |
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