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Ladle slag activator and application thereof

A technology of activator and ladle, applied in the direction of manufacturing converters, etc., can solve the problems of other impurities that cannot be solved, and achieve the effect of reasonable component selection, pollution reduction, and stable use.

Inactive Publication Date: 2010-08-18
宝钢集团上海梅山有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The molten steel deoxidizer can only solve the technical problems of oxidative impurities in molten steel, but cannot solve the technical problems of other impurities in molten steel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 40 kg of active lime (chemical formula CaO, purchased from our company’s lime kiln, 40 kg of pre-melted slag (main ingredient is Al 2 O 3 -CaO, purchased Henan Ruishi Special Refractory Material Co., Ltd., 10 kg of fluorite (chemical formula CaF 2 , Purchased Guangde Hengda Weiye Company), 5 kg of fused magnesia (chemical formula MgO, purchased from Nanjing Bozhuo Metallurgical Materials Co., Ltd.) and 5 kg of aluminum particles (purchased from Weishi Zhongyuan Metallurgical Materials Co., Ltd.), mixed, stirred and evenly prepared Obtain the ladle slag activator for use.

[0026] In order to ensure the uniform addition of materials, the active ingredients can participate in the use process to the greatest extent, while reducing the amount of dust when adding, for some active lime, fluorite, etc., use the first uniform mixing and then dry ball pressing technology to pelletize, after pelletizing Mix and stir evenly with other active lime, pre-melted slag, aluminum partic...

Embodiment 2

[0028] Take 43 kilograms of active lime, 43 kilograms of pre-melted slag, 5 kilograms of fluorite, 6 kilograms of fused magnesia, and 3 kilograms of aluminum particles, mix them, and mix them evenly to prepare a ladle slag activator for use.

Embodiment 3

[0030] Take 45 kilograms of active lime, 40 kilograms of pre-melted slag, 6 kilograms of fluorite, 5 kilograms of fused magnesia and 4 kilograms of aluminum particles, mix them, and mix them evenly to prepare a ladle slag activator for use.

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PUM

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Abstract

The invention relates to a ladle slag activator which comprises the following components in percentage by weight: 40-45% of active lime, 40-45% of pre-melted slag, 5-10% of fluorite, 5-7% of fused magnesia and 3-5% of aluminum particles, wherein the main component of the active lime is CaO, and the main components of the pre-melted slag are CaO and Al2O3. The invention also provides an application of the ladle slag activator. The invention has reasonable component selection and uniform component distribution and can ensure stable use in steel making; when the ladle slag activator of the invention is used on site, the slag melting speed is high, the fluidity of slag is good, and the corrosion on a ladle liner is small; and impurities in the molten steel are few, thereby reducing the pollution of other slag systems on the molten steel and improving the purity of the molten steel.

Description

【Technical Field】 [0001] The invention relates to an activator, in particular to a ladle slag activator and its use. 【Background technique】 [0002] With the accelerating pace of the development of steel varieties in steel mills, the quality requirements are getting higher and higher, and the requirements for the purity of molten steel are gradually increasing. The content of inclusions in molten steel is also strictly controlled. In order to ensure continuous casting of continuous casting, the current The ability of pure molten steel in slagging technology is limited, and the amount of inclusions has a great influence on the physical properties of steel, such as plasticity, toughness, and weldability. It appears that it cannot meet the quality requirements of some varieties of steel. At present, the modification of ladle slag used in steelmaking has greatly improved the quality of molten steel compared with the previous two years. It can reduce the inclusions of low-carbon alumi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/04C21C5/36B22D1/00
Inventor 王志勤李云刚沈申荣陈广华
Owner 宝钢集团上海梅山有限公司
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