竖炉—铁浴二步法熔融还原的数学模型

本文对竖炉-铁浴二步法熔融还原过程进行物料平衡和热平衡分析。在Fe-O-C-H₂体系中,由氧平衡和热平衡分别确定了上部竖炉和下部铁浴的操作数学模型。由热力学计算,将上、下两部有机联系起来,得到全过程Rist操作线图。从而,建立了竖炉-铁浴二步法熔融还原过程数学模型,可用来计算全过程氧耗和燃料比等操作参数。

The Mathematical Model of Smelting Reduction Process Using Shaft Furnace-Iron Bath Two Stages Method

The analysis of the mass and enthalpy balances is made for the smelting reduction process in the two-stage of shaft furnace-iron bath. Because of the relevance to carbonaceous as well as hydrogenaceous gases in the process, the Fe-C-O-H₂ system is employed. The two combining equations of the oxygen balance and the enthalpy balance for prereduction and smelting reduction reactors are formulated respectively- Two equations can be related reasonably by means of calculating thermodynamic results and the Rist diagram of the process is figured out. The mathematical model is developed for calculating the fuel rate, oxygen consumed and other control parameters for the process.