Closed-loop control method for burdening of blast furnace

Abstract

The invention provides a closed-loop control method for burdening of a blast furnace. The closed-loop control method comprises the steps of: presetting a control target of reasonable slag performance of a blast furnace; carrying out material tracking and parameter self-learning of the blast furnace; acquiring analytic component values of materials loaded in the blast furnace; acquiring loading calculating information and loading time of each batch of material at the top of the blast furnace; acquiring actual molten iron analytic components and actual slag analytic component values; acquiring actual iron discharging time and the like; determining whether the materials need to be changed or not according to preparation information to generate a material changing list of the blast furnace; acquiring a use status and the like of each trough of the blast furnace; and calculating a cutout quantity of materials in each trough according to the material changing list of the blast furnace, as well as the status of each trough and the like, and issuing the cutout quantity to a basic automatic system for being executed. The closed-loop control method is capable of specifying the slag performance control operation, plays positive roles in reducing slag performance fluctuation, stabilizing furnace condition, reducing labor intensity, increasing production efficiency and the like, and has a large actual value and a wide application prospect for medium and large blast furnaces with more perfect devices.

Description

technical field [0001] The invention relates to the field of production and control of metallurgical processes, in particular to the fields of blast furnace ironmaking process control systems and expert systems, and specifically relates to a closed-loop control method for blast furnace batching. Background technique [0002] Blast furnace ironmaking is a complex physical and chemical process. Iron ore, fuel and solvent are loaded from the upper part of the furnace roof, and high-temperature oxygen-enriched air is blown in from the lower part to burn the fuel. A large amount of high-temperature reducing gas is generated and moves upward, and the charge from above is falling. The process goes through a series of processes such as heating, reduction, melting, and slagging, and finally produces liquid slag and pig iron, which are discharged from the blast furnace through the tap hole. [0003] Blast furnace ironmaking is an uninterrupted continuous production process, and has th...

AI Technical Summary

Problems solved by technology

[0011] Thirdly, the appointment execution is cumbersome. After confirming the bill of material, it is necessary to match the material of the trough and the material of the bill of material, and carry out the calculation of the weighing system table, and send it to the basic automation system for execution

This series of processes adopts manual operations, which are often heavy tasks and easy to misuse.

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