Effect of in furnace conditions on hot metal flow in blast furnace hearth
Understanding of hot metal flow in the BF hearth is important to the extension of blast furnace life,since it is particularly relevant to hearth erosion.In this paper,a Coupled Fluid Refractory model is used to calculate the hot metal flow and heat transfer in a blast furnace hearth.The model is based on computational fluid dynamics (CFD)and considers flows through porous media,turbulence and thermal dispersion.Natural convection is found to be important for some in-furnace conditions.Several zones are formed due to the dominance of buoyancy and the liquid temperature varies significantly in vertical direction.Numerical experiments are conducted to investigate the effect of several parameters on the flow pattern and temperature distribution,such as the production rate,thermal expansion coefficient,coke bed permeability.Transitional points to forced convection are identified.
blast furnace hearth metal flow heat transfer modelling
Baoyu Guo Aibing Yu Daniel Maldonado Paul Zulli
Lab for Simulation and Modelling of Particulate Systems,School of Materials Science and Engineering, BlueScope Steel Research,Port Kembla,NSW 2505,Australia
国际会议
上海
英文
60-64
2008-09-26(万方平台首次上网日期,不代表论文的发表时间)