Preparation method of ferrovanadium alloy

A technology of ferro-vanadium alloy and vanadium slag, which is applied in the field of ferro-alloy and can solve the problems of lengthy ferro-vanadium smelting process

Pending Publication Date: 2017-06-16
JIANGSU PROVINCE METALLURGICAL DESIGN INST
View PDF11 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that the existing smelting process of using vanadium slag to produce ferrovanadi...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of ferrovanadium alloy

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0047] refer to figure 1 , the vanadium slag (V 2 o 5 Grade 16%, TFe content 40%), reduced coal (ash content less than 10%) and additives (lime, CaO content 93%) are mixed and pelletized according to the mass ratio of 100:8:10 to obtain mixed pellets; the above mixed pellets The ball is supplied to the reduction roasting device (rotary hearth furnace) for reduction roasting treatment, the temperature of the reduction roasting treatment is 1000 degrees Celsius, and the metallized pellets with a metallization rate of 82% are obtained; the above metallized pellets are mixed with vanadium pentoxide (V 2 o 5 Grade 93%), aluminum particles and lime are mixed according to the mass ratio of 100:300:155:20, and then supplied to an electric arc furnace for smelting treatment, and the slag and iron are separated to obtain a vanadium-iron alloy.

[0048]After testing, the mass percentage of V in the obtained ferrovanadium alloy is 82.43wt%, the mass percentage of impurity Al is 1.94wt...

experiment example 2

[0050] refer to figure 1 , the vanadium slag (V 2 o 5 Grade 16%, TFe content 40%), reduced coal (ash content less than 10%) and additives (lime, CaO content 93%) are mixed and pelletized according to the mass ratio of 100:10:15 to obtain mixed pellets; the above mixed pellets The ball is supplied to the reduction roasting device (rotary hearth furnace) for reduction roasting treatment, the temperature of the reduction roasting treatment is 1100 degrees Celsius, and the metallized pellets with a metallization rate of 84% are obtained; the above metallized pellets are mixed with vanadium pentoxide (V 2 o 5 Grade 93%), aluminum particles and lime are mixed according to the mass ratio of 100:100:57:16, and then supplied to the electric arc furnace for smelting treatment, and the slag and iron are separated to obtain the vanadium-iron alloy.

[0051] After testing, the mass percentage of V in the obtained vanadium-iron alloy is 62.61wt%, the mass percentage of impurity Al is 1....

experiment example 3

[0053] refer to figure 1 , the vanadium slag (V 2 o 5 Grade 16%, TFe content 40%), reduced coal (ash content less than 10%) and additives (lime, CaO content 93%) are mixed and pelletized according to the mass ratio of 100:12.5:30 to obtain mixed pellets; the above mixed pellets The ball is supplied to the reduction roasting device (rotary hearth furnace) for reduction roasting treatment, the temperature of the reduction roasting treatment is 1300 degrees Celsius, and the metallized pellets with a metallization rate of 90% are obtained; the above metallized pellets are mixed with vanadium pentoxide (V 2 o 5 Grade 93%), aluminum particles and lime are mixed according to the mass ratio of 100:60:40:8, and then supplied to the electric arc furnace for smelting treatment, and slag and iron are separated to obtain ferrovanadium alloy.

[0054] After testing, the mass percentage of V in the obtained vanadium-iron alloy is 51.78wt%, the mass percentage of impurity Al is 1.34wt%, t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of a ferrovanadium alloy. The method includes: (1) subjecting vanadium slag, reducing coal and an additive to mixing pelletizing so as to obtain mixed pellets; (2) supplying the mixed pellets to a reduction roasting device to conduct reduction roasting treatment so as to obtain metallized pellets; and (3) mixing the metallized pellets with vanadium pentoxide, aluminum granules and lime, then supplying the mixture to an electric-arc furnace to perform smelting treatment, thus obtaining the ferrovanadium alloy. The method provided by the invention achieves comprehensive utilization of iron in vanadium slag to replace steel scraps for ferrovanadium smelting. Compared with the existing ferrovanadium smelting technology, the method saves the comprehensive energy consumption by more than 20%, reduces aluminum granule consumption by more than 70%, and lowers steel scrap consumption by 100%.

Description

technical field [0001] The invention belongs to the field of ferroalloys, in particular, the invention relates to a method for preparing vanadium-iron alloys. Background technique [0002] About 80% of the world's vanadium is used in the steel industry, mainly for the production of microalloyed steel and low alloyed steel. Vanadium plays an important role in alloy steel. When vanadium is added to steel, the comprehensive properties of steel will be significantly improved. Vanadium will form carbides and nitrides with carbon and nitrogen in molten steel, and the fine second phase precipitation will strengthen the steel. Adding vanadium as an alloying element to steel can increase the strength of the steel, refine the grains of the steel, eliminate the overheating tendency of the steel, and improve the red hot hardness, wear resistance and welding performance of the steel. As an alloying element, vanadium is often added to steel in the form of ferrovanadium, and vanadium-con...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22B1/02C22B1/248C22B1/245C22C35/00C22C33/06
CPCC22B1/02C22B1/2406C22B1/245C22B1/248C22C33/06C22C35/00
Inventor 宋文臣王静静李红科曹志成薛逊吴道洪
Owner JIANGSU PROVINCE METALLURGICAL DESIGN INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap