Automatic control system for sintered mixture moisture

Abstract

The invention provides an automatic control system for sintered mixture moisture. By measuring the wet capacity of the sintered mixture, predicting proper water content of the sintered mixture according to the wet capacity and adjusting and controlling the water adding amount of a granulating process according to the proper water content prediction value and the on-line detected practical water content to finally stabilize the water content of the sintered mixture at a proper value, the system realizes automatic control of the optimal water distribution quantity of the granulating process and on-line real-time control, effectively overcomes the defect that the water distribution quantity precision manually controlled at present is difficultly ensured, and greatly reduces the labor intensity of operators; and meanwhile, the system has the advantages of short control and stabilizing time and low fluctuation, and effectively overcomes the defect of water distribution quantity error caused by objective factors such as climatic change and the like.

Description

technical field [0001] The invention belongs to the field of iron and steel metallurgy, and in particular relates to an automatic control system for moisture content of sintering mixture. Background technique [0002] In the field of iron and steel metallurgy, iron ore powder, coke, flux, etc. are mixed with water, and the pellets of the mixture with a certain particle size distribution are obtained through the granulation of the cylinder mixer. Sinter for ironmaking. In the granulation process, the amount of water distribution has an important influence on the pelletizing behavior of the mixture and the particle size distribution of the final mixture pellets: with the increase of moisture, the air permeability of the mixture increases and the productivity increases; If the water content is too large, an over-wet zone will be formed on the sintering section, which will increase the resistance of the material layer and increase energy consumption; if the water content is too...

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Problems solved by technology

The above factors make it difficult to control the water content of the sinter mixture stably at an appropriate value

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