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Method for producing ferrovanadium by aluminothermic process

A technology of electric thermite and ferrovanadium, applied in the direction of improving process efficiency, etc., can solve the problems of low production capacity of a single ferrovanadium furnace, affecting vanadium yield, etc., achieve the effect of bill of lading production capacity and increase yield

Inactive Publication Date: 2013-04-17
攀钢集团西昌钢钒有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since all the metallurgical raw materials are added to the smelting furnace at one time for reduction reaction, the aluminum should not be added too much, otherwise the aluminum in ferrovanadium will exceed the standard and affect the quality of ferrovanadium, which will lead to high vanadium content in metallurgical slag and affect the quality of ferrovanadium. Yield of vanadium in electroluminothermic metallurgy process
In addition, the production of ferrovanadium by the traditional electroluminothermic method has the problem of low production capacity of a single furnace

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027]Mixing 7 cans of metallurgical raw materials comprising vanadium trioxide, aluminum grains, iron filings and lime and 1 can of metallurgical raw materials comprising vanadium pentoxide, aluminum grains, iron filings and lime, wherein each can comprises vanadium trioxide Metallurgical raw materials include 1000kg of vanadium trioxide, 488kg of aluminum pellets, 530kg of iron filings, and 300kg of calcium oxide. Each can of metallurgical raw materials containing vanadium pentoxide includes 1000kg of vanadium pentoxide, 583kg Iron filings, 300kg of calcium oxide. Add the mixed vanadium pentoxide tank material (2413kg) into an electric arc furnace with a nominal capacity of 10t for smelting, use a secondary voltage of 190V and a current of 8000A to strike the arc, and after all the materials are melted to form a molten pool, add 4 cans of mixed vanadium trioxide (9272kg), adjust the secondary voltage to 135V, and the current to 13000A. plate, thus completing the smelting of...

example 2

[0029] Mixing 9 cans of metallurgical raw materials comprising vanadium trioxide, aluminum grains, iron filings and lime and 1 can of metallurgical raw materials comprising vanadium pentoxide, aluminum grains, iron filings and lime, wherein each can comprises vanadium trioxide Metallurgical raw materials include 1000kg of vanadium trioxide, 458kg of aluminum pellets, 530kg of iron filings, and 300kg of calcium oxide. Each can of metallurgical raw materials containing vanadium pentoxide includes 1000kg of vanadium pentoxide, 548kg of Iron filings, 300kg of calcium oxide. Put the mixed vanadium pentoxide tank material (2378kg) into an electric arc furnace with a nominal capacity of 10t for smelting, use a secondary voltage of 190V and a current of 8000A to strike the arc, and after all the materials are melted to form a molten pool, add 5 tanks of vanadium trioxide (11440kg), adjust the secondary voltage to 135V, the current to 13500A, after 20 minutes of electrification, when t...

example 3

[0031] Mixing 5 cans of metallurgical raw materials comprising vanadium trioxide, aluminum grains, iron filings and lime and 1 can of metallurgical raw materials comprising vanadium pentoxide, aluminum grains, iron filings and lime, wherein each can comprises vanadium trioxide Metallurgical raw materials include 1000kg of vanadium trioxide, 417kg of aluminum pellets, 530kg of iron filings, and 300kg of calcium oxide. Each can of metallurgical raw materials containing vanadium pentoxide includes 1000kg of vanadium pentoxide, Iron filings, 300kg of calcium oxide. Add the mixed vanadium pentoxide tank material (2329kg) into an electric arc furnace with a nominal capacity of 10t for smelting, use a secondary voltage of 190V and a current of 8000A to strike the arc, and after all the materials are melted to form a molten pool, add Prepare 3 cans of vanadium trioxide (6741kg), adjust the secondary voltage to 135V, and the current to 14000A. After 20 minutes of electrification, when ...

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PUM

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Abstract

The invention provides a method for producing ferrovanadium by an aluminothermic process. The method comprises the steps as follows: a) mixing metallurgical materials including vanadium oxide, aluminum particles, scrap iron and lime; b) adding a part of the metallurgical materials into an electric arc furnace for smelting, and deslagging when the content of V in smelting slag is not more than 0.5%; and c) adding another part of the metallurgical materials into the electric arc furnace for smelting, and deslagging when the content of V in the smelting slag is not more than 0.5%; and d) adding vanadium pentoxide and the lime into the electric arc furnace for refining, and discharging a ferrovanadium alloy solution and rich ferrovanadium slag when the content of aluminum in the ferrovanadium alloy solution is not more than 1.5%. According to the method, the vanadium yield can be increased, the content of aluminum residues in vanadium can be effectively controlled, and the single furnace capacity of the ferrovanadium can be increased.

Description

technical field [0001] The invention relates to a method for producing ferrovanadium by adopting an electric thermite method. Background technique [0002] Vanadium plays the role of deoxidation and grain refinement in steel, and a small amount of vanadium can improve the performance of steel and increase the wear resistance, toughness and strength of steel. Ferrovanadium (ferrovanadium alloy) has become the main alloy additive for smelting vanadium-containing steels because of its advantages of high alloying degree, high vanadium yield and low impurity content. [0003] The methods of smelting ferrovanadium generally include carbothermal method, silicothermal method, aluminothermic method and electric aluminothermic method. Since the electric thermite method has the advantages of relatively mature production technology, relatively advanced equipment level, and relatively stable product quality, the electric aluminotherm method is generally used to produce vanadium at prese...

Claims

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Application Information

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IPC IPC(8): C22C33/00C22C35/00C22C38/12C22B5/04
CPCY02P10/20
Inventor 李月鹏刘鑫刘武汉刘恢前徐海斌哈春涛钟国梅游云帅马琼
Owner 攀钢集团西昌钢钒有限公司
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