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Titanium-containing molten iron converter high-scrap-ratio rapid heating production method

A production method and a technology of scrap steel ratio, which are applied in the direction of manufacturing converters and improving process efficiency, can solve the problems of insufficient or little research on heating efficiency, and research on heating efficiency of oxygen combustion, so as to improve the dephosphorization rate and improve the dephosphorization rate. , the effect of improving smelting efficiency

Active Publication Date: 2021-04-27
SHOUGANG CORPORATION
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Problems solved by technology

There is not enough research on the heating efficiency of existing equipment, especially the research on the oxygen combustion heating efficiency of the oxygen lance in the smelting process is even less

Method used

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  • Titanium-containing molten iron converter high-scrap-ratio rapid heating production method

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Embodiment Construction

[0041] The present invention will be described in detail below in conjunction with specific embodiments and examples, and the advantages and various effects of the present invention will be presented more clearly. Those skilled in the art should understand that these specific implementations and examples are used to illustrate the present invention, not to limit the present invention.

[0042] Throughout the specification, unless otherwise specified, terms used herein should be understood as commonly used in the art. Therefore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, this specification shall take precedence.

[0043]Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0044] like ...

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Abstract

The invention discloses a titanium-containing molten iron converter high-scrap-ratio rapid heating production method. The method comprises the following steps that titanium-containing molten iron and scrap steel in a preset proportion are added into a converter; converter blowing dephosphorization operation is executed; an end-point furnace turning-down operation is executed; and slag pouring and furnace shaking operation is executed. According to the titanium-containing molten iron converter high-scrap-ratio rapid heating production method, efficient dephosphorization of the converter under the same molten iron condition at the scrap steel ratio of 20% or above is achieved, the one-time converter turning-down temperature of the converter is increased by 30-50 DEG C compared with conventional smelting operation, the requirements of the steel grade end point for phosphorus and temperature are met, and the smelting period is shortened by 1-2 minutes.

Description

technical field [0001] The invention belongs to the field of converter steelmaking, and in particular relates to a production method for rapidly raising the temperature of a titanium-containing molten iron converter with a large scrap steel ratio. Background technique [0002] The use of titanium ore or titanium balls is a common furnace protection method for blast furnaces, which can achieve the purpose of prolonging the service life of the blast furnace. At the same time, it will also increase the titanium content of molten iron, which can reach about 0.10%. Almost no effect. With the depletion of global mineral resources, there are fewer and fewer high-quality resources available for mining. In order to save the burden structure, the iron and steel plant in Panxi area consumes a large amount of local cheap vanadium and titanium balls in the blast furnace, resulting in high content of titanium, vanadium and chromium in the molten iron. When the converter is smelting molt...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/28C21C5/30C21C7/064
CPCC21C5/28C21C5/30C21C7/064Y02P10/20
Inventor 孔祥涛杨龙飞吕延春伍从应周德蓝桂年文安义李鸿荣刘珂孙齐松江金东丁宁程四华游建刘占林
Owner SHOUGANG CORPORATION
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