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KR desulfurization method and desulfurization equipment thereof

A technology of desulfurization equipment and desulfurizer, which is applied in the field of metallurgy, can solve problems such as desulfurizer agglomeration, and achieve the effects of alleviating agglomeration, improving utilization rate, and increasing contact area

Pending Publication Date: 2020-11-17
湖南华菱涟源钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the purpose of this application is to provide a KR desulfurization method and its desulfurization equipment, to solve the technical problem of a large amount of desulfurization agent agglomeration in the existing KR desulfurization process

Method used

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  • KR desulfurization method and desulfurization equipment thereof
  • KR desulfurization method and desulfurization equipment thereof
  • KR desulfurization method and desulfurization equipment thereof

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Embodiment 1

[0057] see figure 2 , figure 2 It is a schematic diagram of the structure of the three-blade mixing head, and A is the view viewed from the direction of A; taking the KR desulfurization production site of Lianyuan Steel Refining Group Co., Ltd. as an example, the iron ladle used in its production has a cylindrical upper part and an elliptical lower part The bottom of the tank, the inner diameter of the tank bottom is 2.2-2.5m, and the height is 4.0-4.2m; the stirring head used is a three-leaf stirring head with a radius of 0.60m. Length 500mm, bottom length 450mm;

[0058] The composition and temperature of the molten iron for KR desulfurization treatment meet the following requirements: the temperature of the molten iron is 1280-1420°C, and the molten iron contains the following components by weight percentage: C: 4.0%-4.5%, Si: 0.2%-1.5%, Mn: 0.2% to 0.5%, P: 0.08% to 0.15%, S: 0.02% to 0.1%, and Ti: 0.03% to 0.09%; for molten iron within the above composition and temper...

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Abstract

The invention provides a KR desulfurization method. The KR desulfurization method comprises the steps of adding desulfurizer into molten iron contained in an iron ladle, and stirring; wherein the maximum inner diameter of the iron ladle is D, and the height of the iron ladle is H; the distance between the center of a stirring generation area in the vertical direction and the central axis of the iron ladle is 0.10 D to 0.30 D, and the distance between a plane where the bottom of the stirring generation area is located and the top surface of the molten iron is 3 / 5 H-4 / 5 H; and in the desulfurization process, a large amount of desulfurizer cannot be agglomerated.

Description

technical field [0001] The application belongs to the technical field of metallurgy, and in particular relates to a KR desulfurization method and desulfurization equipment thereof. Background technique [0002] The KR desulfurization method is the main means of molten iron pretreatment technology at home and abroad at this stage. It mixes the molten iron and desulfurizer through mechanical stirring, which improves the dynamic conditions of the desulfurization process and achieves the purpose of rapid desulfurization. The desulfurization method is widely used by iron and steel enterprises at home and abroad because of its stable equipment and simple operation. After decades of development, although it has the advantages of deep desulfurization and desulfurization stability, there are still some shortcomings in actual production. [0003] The current KR desulfurization process is prone to a large amount of desulfurization agent agglomeration. To complete the desulfurization r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C1/02
CPCC21C1/02
Inventor 谢森林邓必荣李丹向往肖磊崔宏荣肖承鹏樊智勇王仕华金先文
Owner 湖南华菱涟源钢铁有限公司
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