中文摘要：

针对铬粉矿冷固结含碳团块转底炉预还原-竖炉型炉终还原冶炼含Cr铁水技术路线的终还原反应器,建立了描述其内传输现象的二维综合数学模型,并进行了数值仿真研究.仿真结果表明,势流理论在很大程度上反映了填充床中物料流动和混合情况,可以胜任对固体炉料运动的描述;炉内料面上不同炉料分布决定着炉内炉料流量的分布、熔融液体流量的分布和渣中Cr_2O_3浓度的分布.在炉下部,炉中心以矿石为主的布料比以焦炭为主的布料能引起较大煤气温降;而在炉上部,炉中心以矿石为主的布料引起的煤气温降比炉中心以焦炭为主的布料引起的煤气温降低.其他条件不变时,通过布料连续改变炉内料面上的炉料分布引起的炉内软熔带的变化是不连续的.中心加焦形成倒"V"型软熔带.

英文摘要：

A numerical simulation on the final reduction reactor of a two-step method capable of producing hot metal containing>25% Cr has been carried out.The results obtained through numerical simulation were as follows.Potential flow theory can much more accurately describe the flow and mix of the burden in shaft,and can simulate the shaft burden flows.In the lower part of the shaft,the gas temperature drop in the case of charging coke mainly to the shaft center was less than that in the case of charging ore mai...