Control method for adding water in mixture in sintering production

Abstract

The invention relates to a control method for adding water in a mixture in sintering production, which is used for controlling the moisture ratio of the mixture so as to improve the yield and the quality of products, and belongs to the technical field of metallurgy sintering production control. The method comprises the following steps of: measuring the weight of each raw material, the flux of sludge, the density of the sludge, the flux of the added water and the added vapor and the moisture content of each raw material in real time; filtering the measured values, and calculating and judging the slaking degree of lime; creating a material tracking array, and calculating the moisture content before mixing; allocating and controlling the quantity of sludge and the water to be added in a first mixing process; and allocating and controlling the quantity of the vapor and the water to be added in a secondary mixing process according to the quantity of water added in the first mixing process, the moisture ratio measured after the first mixing process and a target value of the secondary mixing process. The mixture humidity control technology for a sintering machine provided by the invention is fast in reaction speed, high in control precision and capable of efficiently making good use of industrial waste to make waste profitable, so that an optimal mixture humidity control scheme of the sintering machine is provided for the iron and steel metallurgical enterprises, and the method can be generalized in the sintering machines of the same type and has excellent economic and social benefits.

Description

technical field [0001] The invention relates to a control method for adding water to a mixture in sintering production, which is used for controlling the moisture content of the mixture to improve product output and quality, and belongs to the technical field of metallurgical sintering production control. Background technique [0002] In sintering production, the moisture content of the mixture directly affects the air permeability of the mixture on the sintering machine trolley, thus affecting the output and quality of sinter. The control method of adding water to the sintering mixture commonly used by metallurgical enterprises cannot overcome the influence of the large lagging link and often causes overshoot. In addition, in modern sintering production, in order to protect the environment and make full use of resources, industrial sludge is often added in the process of sintering and mixing, so the moisture in sintering mainly comes from industrial sludge. Due to the unst...

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Problems solved by technology

Due to the unstable concentration of industrial sludge, it is very difficult to control the amount of water added

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