A modeling method for the output shape of the material surface in the blast furnace material distribution process

Abstract

The present application discloses a method for modeling a material surface output shape in a material layout process in blast furnace. The method comprises: setting a chute inclination vector and a material layout laps vector of a material layout matrix; setting a function of the material surface output shape in the material layout process; taking a horizontal plane of the material bottom output shape as a reference to construct an integral constraint of the function of the material surface output shape; setting a base function of a unique lap material surface output of the material layout to construct a material layout output function with different ring bits; and determining a final material surface output shape according to the material layout output function with a last ring bit. According to the method of the present application, an entire outline of the material surface shape output by the material layout matrix can be conveniently and accurately obtained, and image visualization of the material surface output shape in the blast furnace material layout matrix can be realized, so as to reduce a fuel consumption ratio, save energy consumption, ensure stable and smooth in blast furnace conditions, stable in blast furnace yield, and prolonged in blast furnace life, avoid failures such as stuffiness, difficult operation, collapse, material collapse, and the like, and facilitate realization of dynamic distribution control of the blast furnace material output shape, and automation of the whole smelting process of the blast furnace.

Description

technical field [0001] The invention belongs to the field of blast furnace ironmaking process control, in particular to a modeling method for the output shape of the blast furnace material surface during the material distribution process. Background technique [0002] Blast furnace material distribution is an operation method to adjust the distribution of charge in the furnace throat during the blast furnace ironmaking process. Whether the distribution shape of the charge in the furnace throat is reasonable or not has a great impact on the blast furnace pig iron output, fuel consumption, blast furnace longevity and the stability of the furnace condition. have a huge impact. The distribution matrix is ​​the dependent variable of the output shape of the material surface, and refers to the rules followed by the distributor during the distribution process. It is composed of the chute angle and the sequence of the distribution circles in a certain order. The output shape of the ...

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Problems solved by technology

[0003] The patent document with the publication number CN104133945A discloses a model relationship between the blast furnace distribution control parameters and the material surface. For the description of the blast furnace distribution model, the blanking process model has a certain positive effect, but the obvious disadvantage is that there are more material surfaces. The probe height detection data has high requirements on the accuracy of the material surface height data, and the real-time scanning detection technology of the material surface is also a difficult problem in reality

At the same time, it ignores the influence of the number of cloth loops in the cloth matrix on the output shape of the material surface, and does not consider the integral constraint of the dynamic material surface output shape under constant batch weight

Therefore, the existing detection technology cannot penetrate the furnace wall to obtain the scanning distribution information of the material surface. The output shape of the blast furnace material distribution matrix has always been detected by a probe, which cannot obtain a full picture of the entire material surface distribution shape, and is not conducive to the material distribution process. Output surface shape control

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