Closed loop control method of sintering mixture moisture

Abstract

The invention provides a closed loop control method of sintering mixture moisture, belongs to the technical field of automatic sintering mixture water adding controlling, and particularly relates to a control method based on a fuzzy control theory, an automatic optimizing algorithm and a sintering water adding operation process. The control process of the method mainly comprises the steps that 1, the mixture water adding amount is automatically calculated through the target moisture and data detected by a microwave moisture testing instrument and a water adding flowmeter according to the fuzzy control theory; 2, a target moisture value is optimized regularly and automatically by establishing sintering moisture quality evaluation indexes through the automatic optimizing algorithm, and the water adding amount is precisely controlled. According to the method, the manual adjusting mode of traditional sintering mixture water adding is changed, closed loop control over the sintering mixture moisture is achieved, the control precision of sintering mixture water adding is improved, the automation level of sintering mixture water adding is increased, and the good uniform mixing and pelletizing effects and the ideal air permeability are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of automatic control of adding water to a sintering mixture, and in particular provides a method for closed-loop control of moisture in a sintering mixture. Background technique [0002] Moisture control of sinter mixture is an important link in the sinter production process, which not only directly affects the vertical sintering speed, but also affects the yield of sintered ore and drum index. Too much moisture in the mixture will speed up the sintering speed, resulting in a low yield of sintered ore, a large amount of returned ore, and a decrease in the drum index; too little moisture in the mixture will slow down the sintering speed, resulting in low productivity and comprehensive energy consumption. Increase. In order to make the sintering process have good air permeability and good spheroidization of the mixture, accurate detection and control of the moisture content of the mixture is a necessary guara...

AI Technical Summary

Problems solved by technology

At present, domestic control of sinter mixture moisture is basically in the state of manual control, and there is no report on realizing automatic control for the time being. Therefore, the proposal and implementation of the present invention will serve as a good example and lead in the field of sinter mixture moisture control. effect

Images