Different distribution modes determine the distribution state of the charge and the porosity size of the charge in different parts,and then affect the speed and pressure distribution of gas flow in the furnace. The distribution of the gas flow directly affects the smoothness of blast furnace, the utilization rate of gas flow and the permeability of material column. In order to promote the reasonable distribution of gas flow to further explore the gas velocity and pressure change rules in different parts of the furnace under the condition of central coke adding, a two-dimensional physical model of blast furnace gas flow was established with the help of numerical simulation method. Based on the porous medium algorithm and user-defined parameters, the velocity and pressure distribution of gas flow through different parts of a 4 000 m3 blast furnace was simulated under the mode of central coke adding, which was expected to provide basic theory and data support for blast furnace smelting.
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