Static-dynamic automatic feeding method in converter smelting process

Abstract

A static-dynamic automatic feeding method in the converter smelting process belongs to the technical field of automatic control. In the converter smelting process, according to various factors such as components of loaded molten iron, added scrap steel amount and remaining slag amount and by calculation of a secondary steel grade model, a static feeding information sheet is generated and issued to a primary programmable logic controller (PLC) control procedure. The primary PLC control procedure receives material information of the feeding information sheet, prepares materials for secondary material information according to the technological requirements and the principle that an identical material is equally distributed in an identical bin, performs material transfer in real time and automatically carries out converter feeding according to smelting oxygen-blowing amount. After sublance converting medium-term measurement is finished, molten steel components are measured. According to comparing difference between measurement components and target components, the secondary steel grade model undergoes calculation again to generate a dynamic feeding information sheet, the dynamic feeding information sheet is issued to the primary PLC control procedure, and material preparation and feeding are automatically carried out. The static-dynamic automatic feeding method has the advantages of effectively solving the problems that manual feeding is not timely, unstable and inaccurate and the like, improves working efficiency and smelting hit rate, reduces feeding cost, shortens smelting cycle, effectively reduces labor and guarantees continuous and stable high-level automatic production.

Description

technical field [0001] The method belongs to the technical field of automatic control, and provides a static and dynamic automatic feeding method in the converter smelting process. The converter can realize static and dynamic accurate feeding without manual participation in the smelting process. Background technique [0002] In order to achieve the purpose of improving the quality of molten steel and meeting the requirements of steel grades in the steelmaking converter, external raw materials need to be added during the smelting process. There are many external raw materials and many uncontrollable factors. Therefore, the steelmaking process with the converter as the core has been controlled by manual experience for a long time. The computer mainly provides operation guidance and does not directly control production. It has fatal weaknesses such as instability, inaccuracy, inconsistency, and non-standardization, and cannot sustain and stabilize high-level steelmaking. Con...

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Problems solved by technology

[0003] The purpose of this method is to provide a static and dynamic automatic feeding method in the converter smelting process, which effectively overcomes the problems of untimely, unstable, and inaccurate manual feeding, improves work efficiency and smelting hit rate, and effectively reduces the labor force. , to ensure continuous and stable high-level automated production

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