DEM Simulation of Solid Flow in an Ironmaking Blast Furnace - Influence of Non-spherical Particles
The cohesive zone, where the ore fed into the blast furnace softens and melts, is critical to the blast furnace performance and stability due to its influence on the gas and solid flow. This paper describes a project for the development of a process model to predict the cohesive zone properties and the results of its first step; the solid flow model.The process model is expected to describe a realistic solid burden flow and the formation of the cohesive zone, its shape, location, structure, permeability, and in particular the mineralogical changes within the cohesive zone. This will be achieved using various simulation and computing tools: a combination of the Discrete Element Method (DEM) and Computational Fluid Dynamics (CFD), the DEM-CFD hybrid approach, together with models for the thermodynamics and reaction kinetics. The key benefits of the hybrid approach lie in the coupling of the continuous phase and the discrete particles, and the possibility of introducing thermodynamics and reaction kinetics into the system in a more realistic manner.Two DEM simulations are presented for a small scale blast furnace to investigate the influence of non-spherical particles on the solid flow. This influence can be observed from a more even solid flow pattern and a reduced deadman size. The results indicate the requirement to include nonspherical particles in a blast furnace simulation to achieve a realistic solid flow.
Blast furnace Solid flow Modelling Discrete element method CFD
A. T. Adema R. Boom Y. Yang R. Boom
Materials innovation institute M2i, The Netherlands Group of Metals Production, Refuting and Recycling (MPRR), Department of Materials Science and Engin
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
2422-2429
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）