A Control Method of Balanced Sintering Air Volume

Abstract

The invention discloses a method for controlling the balanced sintering air volume. The method specifically includes the following steps: S1. Determine the fuzzy judgment condition for drastic wind resistance change based on the historical data of the bellows; S2. Real-time detect the current The start position and the end position of the drastic change of wind resistance; S3, adjust the opening of the butterfly valve of the bellows in real time based on the start position of the drastic change of wind resistance and the end position of the drastic change of wind resistance. By automatically tracking the position of drastic changes in air resistance, the opening of each bellows butterfly valve is dynamically adjusted in real time, that is, the air volume of each bellows is dynamically adjusted in real time, the redox atmosphere in the sintering process of each bellows is stabilized, the heat dissipation speed in the high temperature area is controlled, and the invalid air volume is reduced, so as to realize the sintering process in Taiwan Equilibrium control in the direction of vehicle movement.

Description

technical field [0001] The invention belongs to the technical field of sintering production, and more specifically, the invention relates to a method for controlling a balanced sintering air volume. Background technique [0002] The central link in sinter production in the steel industry is sintering. The draft sintering process is carried out from top to bottom, with obvious stratification; from the ignition, there will be a sintered ore layer, a combustion layer, a preheated layer, a dry layer and an over-humid layer in sequence, and then disappear in turn, and finally all become sintered ore seam. Among them, the air permeability of the over-humid layer is poor, and the air permeability of the combustion layer is the worst. The disappearance of these two layers will greatly change the local wind resistance, which will affect the negative pressure and air volume of the main pipe, thus affecting the entire sintering process. [0003] The size of the sintering air volume ...

AI Technical Summary

Problems solved by technology

The change and disappearance of these two layers will greatly change the local wind resistance, affect the negative pressure and air volume of the main pipe, and thus affect the entire sintering process

[0003] The size of the sintering air volume has an important impact on the oxidation-reduction environment of the sintering process. The temperature in the high-temperature zone has a great influence on the sintering mechanical strength, and the economical use of the main exhaust air volume has great economic benefits; the traditional sintering bellows control is to stabilize the sintering The end position is the main control purpose. This method is not sensitive to the effective utilization rate of the main exhaust air volume. The oxidizing atmosphere in the sintering process is strong, and more heat is taken away in the high temperature zone.

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