Method for alloying vanadium in molten steel by using ferrovanadium fine powder in RH station

A technology of vanadium alloying and fine powder, which is applied in the field of vanadium alloying to achieve rapid alloying and reduce production costs

Inactive Publication Date: 2012-02-08
PANZHIHUA IRON AND STEEL +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the use of ferrovanadium fine powder for vanadium alloying of molten steel in the RH station

Method used

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  • Method for alloying vanadium in molten steel by using ferrovanadium fine powder in RH station
  • Method for alloying vanadium in molten steel by using ferrovanadium fine powder in RH station

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Embodiment one uses the method of the present invention to carry out vanadium alloying of molten steel

[0020] Prepare particle size and be the FeV50 fine powder of 5~15 millimeters, its composition is: V 50%, C 0.15%, Si0.3%, P 0.03%, S 0.03%, Al 1.3%, all the other are Fe (weight percent). The molten steel enters the RH vacuum treatment station, and after temperature measurement, sampling, and oxygen determination, it is vacuumized, and the molten steel is circulated for 10 minutes under the condition of a vacuum of 2 millibars (mbar), and the molten steel is deoxidized and dehydrogenated, and then the particle size is FeV50 fine powder of 5-15 mm is added from the silo to the molten steel for vanadium alloying. After vanadium alloying, the circulation continues for 3 minutes, then the vacuum treatment is completed, the temperature is measured, and the molten steel is sent to the continuous casting process after sampling.

[0021] Among them, the amount of molten ste...

Embodiment 2

[0022] Embodiment two uses the method of the present invention to carry out vanadium alloying of molten steel

[0023] Prepare particle size and be the FeV50 fine powder of 5~15 millimeters, its composition is: V 50%, C 0.15%, Si0.3%, P 0.03%, S 0.03%, Al 1.3%, all the other are Fe (weight percent). The molten steel enters the RH vacuum treatment station, and after temperature measurement, sampling, and oxygen determination, it is vacuumized, and the molten steel is circulated for 8 minutes under the condition of a vacuum of 1 millibar (mbar), and the molten steel is deoxidized and dehydrogenated, and then the particle size is FeV50 fine powder of 5-15 mm is added from the silo to the molten steel for vanadium alloying. After vanadium alloying, the circulation continues for 5 minutes, then the vacuum treatment is completed, the temperature is measured, and the molten steel is sent to the continuous casting process after sampling.

[0024] Among them, the amount of molten steel...

Embodiment 3

[0025] Embodiment three uses the method of the present invention to carry out vanadium alloying of molten steel

[0026] Prepare particle size and be the FeV50 fine powder of 5~15 millimeters, its composition is: V 50%, C 0.15%, Si0.3%, P 0.03%, S 0.03%, Al 1.3%, all the other are Fe (weight percent). The molten steel enters the RH vacuum treatment station, after temperature measurement, sampling, and oxygen determination, it is vacuumized, and the molten steel is circulated for 12 minutes under the condition of a vacuum of 3 millibars (mbar), and the molten steel is deoxidized and dehydrogenated, and then the particle size is FeV50 fine powder of 5-15 mm is added from the silo to the molten steel for vanadium alloying. After vanadium alloying, the circulation continues for 2 minutes, then the vacuum treatment is completed, the temperature is measured, and the molten steel is sent to the continuous casting process after sampling.

[0027] Among them, the amount of molten steel...

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Abstract

The invention belongs to the field of metallurgy of iron and steel, in particular relates to a method for alloying vanadium in molten steel by using ferrovanadium fine powder in an RH station. The method solves the technical problem that fine powder containing vanadium is difficult to be utilized effectively. The invention aims to provide a method for alloying molten steel by using FeV50 fine powder with the granularity of 5-15 millimeters in an RH molten steel refining station. The method not only has no effect on a steel making mission and a production organization, but also ensures that the FeV50 fine powder resource with the granularity of 5-15 millimeters can be fully utilized. The method has the characteristics of simple operation, easy control, high yield of metal vanadium, and thelike. The invention provides a new selection for fully and effectively utilizing the vanadium resource and reducing the production cost in the steel making process.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy and chemical industry, and in particular relates to a method for alloying molten steel with vanadium by using ferrovanadium fine powder in an RH station. Background technique [0002] At present, the vanadium alloying of molten steel in converter steelmaking mainly uses vanadium iron blocks to alloy molten steel during the tapping process of the converter. , the yield of metal vanadium is low because most of the small particles of vanadium ferroalloy enter the slag layer in the ladle and are sucked away by the fan. For the ferrovanadium fine powder obtained by remelting the ferrovanadium block, and then carrying out vanadium alloying process on the molten steel in the converter tapping process, the loss of vanadium in the remelting process is relatively large, the yield is reduced, and the processing cost is high. [0003] In the prior art, there are literature disclosures on al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/06C22C35/00
Inventor 蒋龙奎戈文荪冯元超陈永李桂军杨素波李青春曾耀先李安林张彦恒
Owner PANZHIHUA IRON AND STEEL
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