Investigation of degradation of sinter in blast furnace with a new vertical probe.

Takada, Tsukasa; Soma, Hideaki; Irita, Toshiyuki; Kamisaka, Eiji; Kimura, Haruo; Isoyama, Masashi; Suzawa, Akikazu

doi:10.2355/isijinternational1966.26.710

Cited by 3 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The low-temperature reduction disintegration of ferrous materials has attracted much interest. For example, Takada et al [3] studied the reduction degradation behavior of sinter samples at various RDI values by inserting a sample of sinter particles into a real BF and recovering it. Iwanaga [4] carried out extensive experiments on the degradation of sinter during reduction and correlated the degree of size degradation with reduction parameters.…”

Section: Introductionmentioning

confidence: 99%

CFD Modeling and Analysis of Particle Size Reduction and Its Effect on Blast Furnace Ironmaking

Jiao

Kuang

Liu

et al. 2020

Metall Mater Trans B

View full text Add to dashboard Cite

Particle size reduction inevitably occurs inside ironmaking blast furnaces (BFs) but is not studied under BF conditions due to the lack of an effective tool. This paper simulates this phenomenon inside a 5000-m 3 commercial BF using a recently developed three-dimensional computational fluid dynamics (CFD) process model. In particular, the sinter reduction degradation and coke gasification are modeled for considering the size reduction. By incorporating this information in the BF model, the in-furnace states and global performance are evaluated with respect to sinter reduction degradation index (RDI) under different conditions, e.g., keeping a constant blast rate or gas pressure drop. The results show that with increasing RDI, the bed permeability deteriorates, and there exists a critical value of RDI beyond which the decreased bed permeability leads to a significant drop in productivity for a given gas pressure drop. However, this problem can be mitigated substantially by charging more coke particles at the furnace periphery under the conditions considered. The proposed approach offers an extended capability to model and control BF operations.

show abstract

Section: Introductionmentioning

confidence: 99%

CFD Modeling and Analysis of Particle Size Reduction and Its Effect on Blast Furnace Ironmaking

Jiao

Kuang

Liu

et al. 2020

Metall Mater Trans B

View full text Add to dashboard Cite

show abstract

“…Different types of sinter broke down into blocks or fragments depending on the configuration of cracks. 13) An increased duration of stay under low-temperature (300-600°C) reducing conditions increased the reduction degradation. 12) Generally, the degradation reached a peak In blast furnace (BF) ironmaking, efforts are made to decrease coke consumption, which can be done by increasing the pulverized coal injection rate (PCR).…”

Section: Introductionmentioning

confidence: 99%