Automatic steelmaking and slag-leaving operation method for converter

Abstract

The invention discloses an automatic steelmaking and slag-leaving operation method for a converter. The method comprises the following steps: (1) collecting the FeO content, and lower furnace molten iron ingredients in an end-point slag of the furnace by a secondary computer system; (2) adding a modifier for regulating the slag according to the FeO content in the slag, and protecting the furnace by slag splashing, wherein the slag splashing time is over 5 minutes; (3) determining the residual sludge amount according to the content of the lower furnace molten iron [Si], and automatically matching corresponding residual slag mode number by the system; (4) automatically matching an execution parameter of a corresponding end-point carbon target value according to the residual slag mode number and the residual slag mode group number subdivided by the corresponding end-point carbon target value; (5) carrying out related calculation on a secondary system steelmaking model, automatically generating an oxygen smelting step and a charging list, and transmitting to a primary system to implement. By adopting the automatic steelmaking and slag-leaving operation method, large splashing when the molten iron is blended can be effectively prevented, automatic steelmaking under the residual slag mode is achieved, consumption of a solvent and a steel material is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a converter automatic steelmaking operation method, in particular to a converter automatic steelmaking operation method for leaving slag. Background technique [0002] The slag operation of the converter can reduce the consumption of flux and steel materials, and can quickly form slag in the early stage of blowing, which is conducive to improving production efficiency, so there is great potential for development and application. However, the slag operation of the converter is prone to large splashes at the moment of adding molten iron, which is unsafe, thus limiting its application. Especially for the converter using automatic steelmaking, the operation is more difficult. Converter automatic steelmaking is a new steelmaking technology that controls the operation of the converter steelmaking process through the computer secondary system. This technology is based on the composition, temperature, loading and Scrap steel, iron bl...

AI Technical Summary

Problems solved by technology

Since the specific amount of slag remaining in the slag operation cannot be determined, and the slag condition of each furnace is also different, there is no ready-made theoretical or empirical reference for the influence on the material balance and heat balance of the converter, and it is difficult to accurately calculate the automatic steelmaking model

Therefore, the current automated steelmaking abandons the operation of slag retention because of its adverse impact on the hit rate of automatic steelmaking

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