Blast furnace smooth running index calculation method based on moving range

Abstract

The invention relates to the field of blast furnace smelting, and discloses a blast furnace smooth running index calculation method based on a moving range, which is used for more accurately calculating a blast furnace smooth running index so as to improve the stability of blast furnace condition operation. The method comprises the following steps: firstly, during blast furnace production, acquiring blast furnace state parameters in the latest period of time in real time, including the blanking speed of a blast furnace, the air pressure of the blast furnace, the top pressure of the blast furnace and the coal gas percentage in the blast furnace; then assigning values to various blast furnace state parameters respectively, the wind pressure, the top pressure and the coal gas percentage in the blast furnace being assigned based on respective moving ranges, the moving ranges being fluctuation values of the blast furnace state parameters in the latest period of time; and finally, obtainingthe blast furnace smooth index through assignment summation of all the blast furnace state parameters. The method is suitable for blast furnaces of iron works.

Description

technical field [0001] The invention relates to the field of blast furnace smelting, in particular to a method for calculating an antegrade index of a blast furnace based on a moving range. Background technique [0002] Blast furnace ironmaking is a resource- and energy-intensive process, and its process costs account for about 70% of the total cost of iron and steel enterprises. Under the circumstances of severe domestic iron and steel production capacity and fierce market competition, effective control of ironmaking production costs is the survival of enterprises. Basic conditions. As the blast furnace is a typical reverse reactor of high temperature and high pressure multiphase complex system, it has the characteristics of multifactoriality, nonlinearity, hysteresis and irreversibility. High-temperature physical and chemical reactions are constantly going on inside the blast furnace. The gas flow and solid, reflow zone, and liquid are constantly convectively moving. The...

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Problems solved by technology

The blast furnace production result data mainly used in the calculation of the blast furnace antegrade index in this patent has a certain hysteresis, which is not very instructive to the blast furnace operator, and cannot effectively solve the problems of suspended material, collapsed material and large fluctuations in furnace conditions

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