Gas Permeability Improvement Mechanism at the Blast Furnace Cohesive Zone by Mixed Coke Charging in Ore Layer and Effect of Coke Mixing for Different Cohesive Zone Condition on Gas Permeability
Masahiro Yakeya, Akito Kasai, Rikizo Tadai, Kentaro Nozawa
Abstract
A major operational problem in increasing pulverized coal rate and decreasing coke rate must be the increased pressure drop or the worsened gas permeability at the lower part of the blast furnace. In order to decrease the pressure drop at the blast furnace cohesive zone (CZ) under low coke rate operation, this study has focused on mixed coke charging in the ore layer. Results obtained by numerical analysis and experiments are as follows:
Topics & Concepts
Blast furnaceCokePulverized coal-fired boilerBlast furnace gasPermeability (electromagnetism)MetallurgyPetroleum cokeMaterials scienceCoalMixing (physics)Composite materialWaste managementChemistryEngineeringMembranePhysicsBiochemistryQuantum mechanicsIron and Steelmaking ProcessesMineral Processing and GrindingMetal Extraction and Bioleaching