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Metals 2018, 8(12), 979; https://doi.org/10.3390/met8120979

Multi-Objective Optimization of Cost Saving and Emission Reduction in Blast Furnace Ironmaking Process

School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
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Received: 20 October 2018 / Revised: 14 November 2018 / Accepted: 17 November 2018 / Published: 23 November 2018
(This article belongs to the Special Issue Selected Papers from 8th ICSTI 2018)
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Abstract

Due to the increasing environmental pressures, one of the most direct and effective way to achieve emission reduction is to reduce the CO2 emissions of the blast furnace process in the iron and steel industry. Based on the substance conservation and energy conservation of ironmaking process and the engineering method, the carbon loss model was firstly established to calculate the amount of solution loss. Based on this model, the blast furnace emission reduction optimization mathematical model with the cost and CO2 emissions as objective functions was then established using the multiple-objective optimization method. The optimized results were obtained by using the GRG (Generalized Reduced Gradient) nonlinear solving method. The optimization model was applied to the B# blast furnace of BayiSteel in China. The optimization model was verified by comparing the optimized results with the actual production data. The optimization model was then applied to analyze the effects of coke ratio, coal rate, blast temperature and other factors on the cost, CO2 emission and solution loss, and some measures to save cost, reduce emissions and reduce solution loss have been proposed. View Full-Text
Keywords: blast furnace; cost; CO2 emissions; solution loss; multi-objective optimization blast furnace; cost; CO2 emissions; solution loss; multi-objective optimization
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Yao, S.; Wu, S.; Song, B.; Kou, M.; Zhou, H.; Gu, K. Multi-Objective Optimization of Cost Saving and Emission Reduction in Blast Furnace Ironmaking Process. Metals 2018, 8, 979.

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