- Title
- Understanding cohesive zone behaviour of blast furnace based on computed tomography flow modelling in a fused bed of ferrous and coke particles
- Creator
- Mitra, Subhasish; Hoque, Mohammad Mainul; O'Dea, Damien; Honeyands, Tom
- Relation
- Powder Technology Vol. 439, Issue 15 April 2024, no. 119686
- Publisher Link
- http://dx.doi.org/10.1016/j.powtec.2024.119686
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2024
- Description
- Performance of ironmaking blast furnace systems critically depends on the permeability of the cohesive zone which involves flow of reducing gas through a packed bed of fused ferrous and coke particles at high temperature. This study systematically investigated the effect of operating temperature on bed permeability for two different ferrous burdens - pellets, and pellets-sinter mixture supported on coke particles. To quantify the structural changes in the bed, interrupted tests at various temperatures were conducted and bed porosity was estimated using synchrotron X-ray computed tomography (CT) technique. Bed porosity showed decreasing trends with increasing temperature. A CT image based computational flow dynamics (CFD) model was developed which showed linearly decreasing trends of bed permeability parameter with increasing temperature indicating a significant loss of bed permeability in the high temperature cases. This behaviour was more pronounced for the pure pellet case compared to the mixed burden case.
- Subject
- ferrous burden; softening and melting; cohesive zone; computed tomography; fluid flow; permeability
- Identifier
- http://hdl.handle.net/1959.13/1506683
- Identifier
- uon:55918
- Identifier
- ISSN:0032-5910
- Rights
- x
- Language
- eng
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