Intelligent control method for bottom blowing of converter

Abstract

The invention provides an intelligent control method for bottom blowing of a converter. The bottom blowing in the method comprises the following steps of: preparing for deslagging, blowing at the earlier stage, blowing at the later stage, waiting for sampling, reblowing, tapping and protecting the converter by splashing slag according to the process sequence. By analyzing a bottom blowing control system of the converter, the intelligent control of the bottom blowing of the converter is realized, and the complexity of the operation of smelting, slag splashing, empty converter, post-stirring and other links in the steelmaking production process of the converter and the disturbance caused by switching of control modes are overcome. The intelligent control method for the bottom blowing of the converter has stable operation and extremely high automation degree, and provides reliable basis and practical basis for realizing high-quality steel and full-automatic steelmaking control. The method meets the requirements of steelmaking production of different steel types and different smelting modes; and compared with the prior art, the method achieves good smelting effects of homogenizing the temperature and components of molten steel, accelerating thermal chemical reaction, removing inclusions and the like, can accurately control the flow of nitrogen and argon, and greatly reduces the steelmaking cost.

Description

technical field [0001] The invention relates to the technical field of iron and steel smelting, in particular to an intelligent control method for bottom blowing of a converter. Background technique [0002] At present, major steel industries at home and abroad have their own control strategies and means for the control of converter bottom blowing. A variety of problems, and did not achieve the desired control effect. For example, the lack of the organic combination of the control of the secondary computer system and other controls, the lack of non-disturbance switching processing of several modes, the lack of branch blockage in various modes and the loop processing when the equipment is abnormal, etc., resulting in the operation of the control equipment Bring about a more obvious hysteresis. There is a single control mode, the labor intensity of the operators is high, and the switching of nitrogen / argon is not precisely controlled, which is not conducive to cost control. ...

AI Technical Summary

Problems solved by technology

[0002] At present, major steel industries at home and abroad have their own forming control strategies and means for the control of converter bottom blowing. Various problems, and did not achieve the desired control effect

For example, the lack of the organic combination of the control of the secondary computer system and other controls, the lack of non-disturbance switching processing of several modes, the lack of branch blockage in various modes and the loop processing when the equipment is abnormal, etc., resulting in the operation of the control equipment Brings a more obvious hysteresis

There is a single control mode, the labor intensity of the operators is high, and the switching of nitrogen / argon is not precisely controlled, which is not conducive to cost control

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