Setting method of moisture control parameters for sintering granulation to effectively suppress raw material flow fluctuation

Abstract

The invention discloses a sintering granulating moisture control parameter tuning method for effectively inhibiting raw material flow fluctuation. The method comprises the following steps: firstly, carrying out fuzzification treatment on such four process variables as blended ore real-time flow, change rate of the blending ore real-time flow, quicklime real-time flow and change rate of the quicklime real-time flow; secondly, obtaining the current working condition of the raw materials according to a raw material working condition evaluation model; and finally, realizing online adjustment of the factors of the consumed moisture of quicklime and the correction factors of the adding water flows based on the established expert rules according to the working conditions. The method has the following beneficial effects: unstable moisture occurring due to drastic fluctuation of the mixing granulation adding water flows caused by sudden change of the raw material flow can be effectively inhibited, thus ensuring the stable and smooth operation of the sintering process and improving the yield and quality of sintering ore.

Description

technical field [0001] The invention belongs to the technical field of sintering production process control, and relates to a sintering granulation moisture control parameter setting method that can effectively suppress fluctuations in raw material flow. Background technique [0002] During the steel sintering process, the mixed ore, solvent, fuel, etc. are mixed and granulated to obtain a mixture with a good particle size distribution, which can increase the air permeability of the sintered material layer, ensure the smooth progress of the sintering production process, and increase the output of sintered ore and Quality has an extremely important guiding significance. Moisture control is a key link in the mixing and granulation process. Realizing the self-adjustment of quicklime consumption moisture factor and water flow correction factor has a very important impact on stabilizing the moisture content of the mixture. [0003] The current moisture control in the mixing and ...

AI Technical Summary

Problems solved by technology

The actual production shows that due to the control of mixed granulation moisture, there are some unstable interference factors, such as the change of silos between the mixed ore silos or quicklime silos, or one of them is broken due to a fault. These will lead to large fluctuations in the flow rate of water added to the mixture, which in turn will lead to severe disturbance of the moisture content of the mixture

Therefore, only based on the traditional feed-forward cascade intelligent control method, it cannot stabilize the moisture content very well.

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