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A Method for Promoting Reaction Balance of Converter

A reaction balance and converter technology, applied in the manufacture of converters and other directions, can solve problems such as affecting product quality, increasing deoxidized alloys, and failing to reach balance, so as to reduce the risk of excessive phosphorus content and oxygen content, promote reaction balance, and improve product quality. quality effect

Active Publication Date: 2020-10-30
SHOUGANG CORPORATION
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the existing technology, the reaction of steel slag in the converter is often not balanced at the end of the converter. If the steel is tapped at this time, the phosphorus content and oxygen content will be high, which will eventually lead to an increase in deoxidized alloys and inclusions, which will affect product quality.

Method used

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  • A Method for Promoting Reaction Balance of Converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] At the blowing end point of the top-bottom compound blowing converter, the measured carbon content at the end point of the converter is 0.052wt%, and the oxygen content at the end point of the converter is 0.061wt. 3 / h, the bottom blowing time of argon is controlled to be 3min, and finally, after the bottom blowing of the converter is completed, the steel is tapped.

Embodiment 2

[0041] At the blowing end point of the top-bottom compound blowing converter, the measured carbon content at the end point of the converter is 0.058wt%, and the oxygen content at the end point of the converter is 0.040wt%. 3 / h, the bottom blowing time of argon is controlled to be 3min, and finally, after the bottom blowing of the converter is completed, the steel is tapped.

Embodiment 3

[0043] At the blowing end point of the top-bottom combined blowing converter, the measured carbon content at the end point of the converter is 0.055wt%, and the oxygen content at the end point of the converter is 0.039wt%, then the steel is tapped directly.

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Abstract

The invention relates to the technical field of converter smelting, in particular to a method for promoting the reaction equilibrium of a converter. The method comprises the following steps: measuringand obtaining the endpoint carbon content of the converter and the endpoint oxygen content of the converter at the blowing endpoint of a top-bottom combined blowing converter; adjusting the bottom argon gas blowing time and bottom argon gas blowing flow of the top-bottom combined blowing converter according to the endpoint carbon content of the converter and the endpoint oxygen content of the converter; tapping steel after the end of bottom blowing of the top-bottom combined blowing converter. According to the method, the endpoint carbon content and the endpoint oxygen content of the converter are obtained at the blowing endpoint of the top-bottom combined blowing converter, and then the bottom argon gas blowing time and the bottom argon gas blowing flow of the top-bottom combined blowingconverter are adjusted according to the endpoint carbon content and the endpoint oxygen content of the converter, so that steel slag reaction equilibrium can be prompted, the risk of excessively highphosphorus content and oxygen content of molten steel is lowered, and the product quality is improved.

Description

technical field [0001] The invention relates to the technical field of converter smelting, in particular to a method for promoting the reaction balance of the converter. Background technique [0002] With the deterioration of raw materials and the increasingly stringent requirements for downstream products, for converter steelmaking, the refining process requires lower carbon content, oxygen content and phosphorus content at the end of the converter, and also requires a good mixing effect of molten steel to avoid During the refining process, the temperature fluctuation in the refining process is abnormal due to the poor mixing effect of molten steel. [0003] In the prior art, the reaction of steel slag in the converter is often not balanced at the end of the converter. If the steel is tapped at this time, the phosphorus and oxygen content will be high, which will eventually lead to the increase of deoxidized alloy and inclusions, which will affect the product quality. Con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/35
CPCC21C5/35
Inventor 高攀李海波王新华刘风刚郭玉明赵晓东张勇孙亮
Owner SHOUGANG CORPORATION
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