Composition-specific granulation characteristics of molten slag at improved throughput and high temperature of 1,723 K

Junjun Wu; Yu Tan; Yuxiang Fu; Hong Wang; Xun Zhu; Qiang Liao

Energy Storage and Saving (Dec 2023)

Composition-specific granulation characteristics of molten slag at improved throughput and high temperature of 1,723 K

Junjun Wu,
Yu Tan,
Yuxiang Fu,
Hong Wang,
Xun Zhu,
Qiang Liao

Affiliations

Junjun Wu: Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing, China, 400044; Institute of Engineering Thermophysics, School of Energy and Power Engineering, Chongqing University, Chongqing, China, 400044
Yu Tan: School of Mechanical and Power Engineering, Chongqing University of Science & Technology, Chongqing, China, 400044
Yuxiang Fu: Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing, China, 400044; Institute of Engineering Thermophysics, School of Energy and Power Engineering, Chongqing University, Chongqing, China, 400044
Hong Wang: Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing, China, 400044; Institute of Engineering Thermophysics, School of Energy and Power Engineering, Chongqing University, Chongqing, China, 400044
Xun Zhu: Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing, China, 400044; Institute of Engineering Thermophysics, School of Energy and Power Engineering, Chongqing University, Chongqing, China, 400044
Qiang Liao: Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing, China, 400044; Institute of Engineering Thermophysics, School of Energy and Power Engineering, Chongqing University, Chongqing, China, 400044; Corresponding author.

Journal volume & issue: Vol. 2, no. 4
pp. 586 – 596

Abstract

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Centrifugal granulation is one key step to enable waste heat recovery from the molten slag in the iron and steel industry. Yet, it remains unknown about the granulation characteristics of molten slag with different chemical compositions, especially at high throughput. In this work, we provided an experimental study on centrifugal granulation with four types of molten slags. The stage-specific centrifugal granulation was recorded and analyzed at first. Both effects of atomizer configuration and chemical compositions on granulation were investigated in detail. The cup-type atomizer favors film-mode disintegration and possesses better anti-adhesion capacity although the final granule size was not strongly affected by the atomizer configuration. Most importantly, centrifugal granulation has been demonstrated with appreciable adaptability to composition-specific blast furnace (BF) slag with binary basicity of 0.9–1.3. The present study not only sheds light on the modest effect of the chemical composition of molten slag on centrifugal granulation characteristics, but also gains credit for the adaptivity of CGATER.

Published in Energy Storage and Saving

ISSN: 2772-6835 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Mechanical engineering and machinery: Energy conservation
Website: https://www.keaipublishing.com/en/journals/energy-storage-and-saving/

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