Research Activities

Cohesive Zone of Blast Furnace

Cohesive Zone of Blast Furnace
Cohesive zone of a blast furnace


The objective of this research project is to predict the evolution of a cohesive zone in a blast furnace as a transition from layered arrangements of burden of ore and coke material to the start of the dripping zone. The newly gained knowledge supports understanding the internal physics of the cohesive zone and its impact on redistribution of hot gas flow and operating conditions. For this purpose the integrating concept of the Extended Discrete Element Method (XDEM) is employed that deals with advanced multi-physics simulation technology by linking the Discrete Element Method (DEM) and Computational Fluid Dynamics (CFD). This approach allows representing the cohesive zone composed of coke and not yet molten ore particles for which the interstitial space between the particles is occupied by a multi-phase flow of gas, liquid iron and slag. Softening and stickiness of particles is taken into account by an increased overlap and cohesive forces between particles, respectively. The multi-phase flow character due to gas, molten iron and slag is described by the simulation framework of OpenFoam. The results of numerical works will be compared to experimental data.



The project is funded by programme “Investissement pour la compétitivite et emploi” - European Regional Development Fund (Grant agreement: 2016-01-002-06) and through internal resources of the University of Luxembourg.