Method for predicting sintering end point according to temperature of air bellow

Abstract

The invention provides a method for predicting a sintering end point according to the temperature of an air bellow, and relates to the technical field of metallurgy. The method for predicting the sintering end point according to the temperature of the bellows comprises the following specific contents: S1, selecting data of stable production of a sintering machine in a certain time period of an iron and steel plant, selecting detected bellows exhaust gas temperature data of 1 # to 28 # bellows, checking the temperature distribution condition, and generally considering that the position near the highest temperature point is the position of the sintering end point; s2, according to the position curve of the sintering end point, it can be judged that the sintering end point will appear in the middle and later periods of the bellows in the normal state, data of the bellows at the middle and later positions are selected, and correlation is checked; and S3, according to the quadratic relation between the sintering end point and the exhaust gas temperature of the front and rear air boxes and the sintering end point as the highest point of the curve, curve fitting is performed on the temperature of each air box, and a temperature curve is drawn. By designing a simple prediction method, the sintering end point can be accurately predicted in advance only according to the exhaust gas temperature of the air bellow, so that the overall working efficiency is greatly improved, and the method is worthy of being vigorously popularized.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for predicting the end point of sintering according to the temperature of the bellows. Background technique [0002] Sintering is one of the main methods of agglomerating iron (fine) ore powder that cannot be directly added to the blast furnace. Through sintering, the metallurgical properties of raw materials can also be improved; sintering is also used in the smelting process of non-ferrous metals; sintering of non-ferrous metal sulfide concentrates, In addition to agglomeration, it also has the function of desulfurization; when using solid-phase reaction to prepare inorganic solid compounds, the reaction rate is controlled by the diffusion process, and often requires a higher temperature to make the reaction effective; other solid compounds are solid-liquid Compounds composed of phases will undergo decomposition reactions when they are melted, so sintering should ge...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a method for predicting the end point of sintering according to the temperature of the bellows, which solves the problem of calculating the BTP position according to the quadratic formula, but in practical application, the sintering process is not a simple quadratic curve, And using the BP neural network, the input variables cannot be well described due to the relationship between the sintering end point

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