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Published in: Metallurgical and Materials Transactions B 1/2017

17-10-2016

Numerical Investigation of the Inner Profiles of Ironmaking Blast Furnaces: Effect of Throat-to-Belly Diameter Ratio

Authors: Zhaoyang Li, Shibo Kuang, Dingliu Yan, Yuanhong Qi, Aibing Yu

Published in: Metallurgical and Materials Transactions B | Issue 1/2017

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Abstract

The inner profile of iron making blast furnace (BF) is of significant importance to reactor performance. However, its determination lacks any sound theoretical and empirical base. This paper presents a numerical study of the multiphase flow and thermochemical behaviors inside BFs with different inner profiles by a multi-fluid process model. The validity of the model is first confirmed by various applications. It is then used to study the effect of throat-to-belly diameter ratio (R D) with respect to productivity, burden distribution pattern, and softening-melting temperature of ferrous materials. The results show that when R D increases, the fuel rate increases at relatively low productivities; however, it initially decreases to a minimum and then increases at relatively high productivities. This performance against R D to some degree varies with either burden distribution pattern or softening-melting temperature of ferrous materials. Optimum R D can be identified with relatively small coke rate and minimum fluctuations of global performance and in-furnace states. The analysis of the in-furnace states reveals that the flow and thermochemical behaviors above the cohesive zone are drastically deteriorated with increasing productivity for BFs with relatively small R D , leading to different variation trends of fuel rate.

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Metadata
Title
Numerical Investigation of the Inner Profiles of Ironmaking Blast Furnaces: Effect of Throat-to-Belly Diameter Ratio
Authors
Zhaoyang Li
Shibo Kuang
Dingliu Yan
Yuanhong Qi
Aibing Yu
Publication date
17-10-2016
Publisher
Springer US
Published in
Metallurgical and Materials Transactions B / Issue 1/2017
Print ISSN: 1073-5615
Electronic ISSN: 1543-1916
DOI
https://doi.org/10.1007/s11663-016-0831-6

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