Method for controlling converter bottom blowing gun exposing

A converter bottom blowing and bottom blowing gun technology, which is applied in the manufacture of converters, etc., can solve the problems of high carbon and oxygen accumulation at the end of the converter and poor bottom blowing effect, so as to improve the bottom blowing effect, protect the furnace lining, and reduce carbon and oxygen accumulation. Effect

Active Publication Date: 2017-06-30
SHOUGANG CORPORATION
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Problems solved by technology

In order to maintain the furnace type and the effect of bottom blowing, the existing technology reduces the thickness of the furnace bottom through the furnace bottom operation. During the furnace bottom process, the upper end of the bottom blowing gun is easily wrapped by slag and repair materials. Therefore, the bottom blowing effect is poor, and eventually it will be The carbon and oxygen product at the end of the converter is too high

Method used

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  • Method for controlling converter bottom blowing gun exposing

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Embodiment Construction

[0019] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0020] The embodiment of the present invention provides a method for controlling the exposure of the converter bottom blowing gun, such as figure 1 As shown, the method includes:

[0021] Step 101: During the tapping process of the converter, control the bottom blowing flow rate of the bottom blowing gun to the converter to be 500-600 m 3 / h.

[0022] Step 102: Perform slag splashing to protect the converter.

[0023] Step 103: ...

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Abstract

The invention relates to the technical field of converter steelmaking, in particular to a method for controlling converter bottom blowing gun exposing. The method includes the steps that in the converter steel tapping process, the bottom blowing flow of a bottom blowing gun to a converter is controlled to range from 500 m<3>/h to 600 m<3>/h; slag splashing protection operation is carried out on the converter; and after slag splashing protection operation is finished, the bottom blowing flow of the bottom blowing gun is decreased to 150 m<3>/h to 200 m<3>/h. According to the method, the large bottom blowing flow ranging from 500 m<3>/h to 600 m<3>/h is adopted in the converter steel tapping process; meanwhile, after the slag splashing protection operation is finished, the bottom blowing flow of the bottom blowing gun is decreased to 150 m<3>/h to 200 m<3>/h, and therefore a low-melting-point mushroom head can be formed above the bottom blowing gun, in the converter blowing earlier stage, the low-melting-point mushroom head above the bottom blowing gun can rapidly melt, exposure of the bottom blowing gun is guaranteed, the bottom blowing effect is accordingly improved, and the converter terminal carbon-oxygen equilibrium is reduced.

Description

technical field [0001] The invention relates to the technical field of converter steelmaking, in particular to a method for controlling the exposure of a converter bottom lance. Background technique [0002] With the application of slag splashing furnace protection technology, the rise of the bottom of the converter during blowing has become a common phenomenon, and the rise of the bottom of the converter directly affects the effect of bottom blowing. In order to maintain the furnace type and the effect of bottom blowing, the existing technology reduces the thickness of the furnace bottom through the furnace bottom operation. During the furnace bottom process, the upper end of the bottom blowing gun is easily wrapped by slag and repair materials. Therefore, the bottom blowing effect is poor, and eventually it will be The carbon and oxygen product at the end of the converter is too high. Contents of the invention [0003] In view of the above problems, the present inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/34C21C5/36
CPCC21C5/34C21C5/36
Inventor 李海波高攀王新华吕迺冰王建伟于会香彭开玉刘风刚郭玉明赵晓东孙亮
Owner SHOUGANG CORPORATION
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