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Method for preparing FeV50 alloy by using waste iron materials obtained through extraction of vanadium from vanadium slag

A technology of iron materials and vanadium slag, which is applied in the field of metallurgy, can solve the problems of reducing the amount of waste generated in the production line, reducing the production cost of vanadium-ferroalloy, and poor quality of vanadium-ferroalloy, and achieves the effect of qualified composition, good quality and efficient utilization

Pending Publication Date: 2021-08-17
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing FeV50 alloy by using vanadium slag to extract vanadium and waste iron materials to prepare FeV50 alloy in order to overcome the problems of high cost and poor quality of vanadium-iron alloy in the production process of ferro-vanadium alloy existing in the prior art. The composition characteristics and cost advantages of waste iron materials in the process of vanadium extraction from vanadium slag are realized, the comprehensive utilization of vanadium-containing and iron waste resources is realized, the amount of waste generated in the production line process is reduced, and the production cost of vanadium-iron alloy is reduced at the same time

Method used

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  • Method for preparing FeV50 alloy by using waste iron materials obtained through extraction of vanadium from vanadium slag
  • Method for preparing FeV50 alloy by using waste iron materials obtained through extraction of vanadium from vanadium slag

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Effect test

Embodiment 1

[0057] Vanadium pentoxide (TV is 55.0% by weight), vanadium trioxide (TV is 64.0% by weight), aluminum particles (aluminum particle purity is 99.0% by weight, particle size is 0.1cm, the actual addition amount of aluminum particles is theoretical addition 1.0 times of the amount), vanadium slag extracting vanadium waste iron material (vanadium slag extracting vanadium waste iron material is coarse vanadium slag ball mill iron grain, the mass ratio of metallic state Fe and oxidized state Fe in vanadium slag extracting vanadium waste iron material is 4: 1) mix uniformly with lime (the content of CaO in the lime is 85% by weight, and the content of metal impurities is 1% by weight) to obtain the iron-vanadium smelting mixture, and then evenly load the iron-vanadium smelting mixture into the smelting electric furnace for smelting, The electrode is lowered to contact with the material, and the arc is energized to trigger the reaction, and the ignition smelting is carried out (the sm...

Embodiment 2

[0062] Vanadium pentoxide (TV is 55.5% by weight), vanadium trioxide (TV is 66.0% by weight), aluminum particles (aluminum particle purity is 99.5% by weight, particle size is 1cm, the actual addition amount of aluminum particles is the theoretical addition amount 1.1 times of that), vanadium slag extracting vanadium waste iron material (vanadium slag extracting vanadium waste iron material is fine vanadium slag winnowing magnetic matter, the mass ratio of metallic state Fe and oxidized state Fe in vanadium slag extracting vanadium waste iron material is 6: 1), iron filings (the purity of iron filings is 99.5% by weight, and the surface area of ​​iron filings is 5cm 2 ) and lime (the content of CaO in the lime is 90.0% by weight, and the content of metal impurities is 0.5% by weight) are mixed evenly to obtain the iron-vanadium smelting mixture, and then the iron-vanadium smelting mixture is evenly loaded into the smelting electric furnace for smelting, and the The electrode i...

Embodiment 3

[0067] Vanadium pentoxide (TV is 55.0% by weight), vanadium trioxide (TV is 64.0% by weight), aluminum particles (the purity of aluminum particles is 99.0% by weight, and the particle size is 0.5cm. The actual addition amount of aluminum particles is theoretical addition amount of 1.0 times), vanadium slag extracting vanadium waste iron material (vanadium slag extracting vanadium waste iron material is leaching tailings iron enrichment material, the mass ratio of metallic state Fe and oxidized state Fe in vanadium slag extracting vanadium waste iron material is 10 1) mix uniformly with lime (the content of CaO in the lime is 85% by weight, and the content of metal impurities is 0.6% by weight) to obtain the iron-vanadium smelting mixture, and then put the iron-vanadium smelting mixture evenly into the smelting electric furnace for smelting , the electrode is lowered to contact with the material, and the arc is energized to trigger the reaction, and the ignition smelting is carr...

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Abstract

The invention relates to the field of metallurgy, and discloses a method for preparing an FeV50 alloy by using waste iron materials obtained through extraction of vanadium from vanadium slag. The method comprises the steps that vanadium oxide, aluminum particles, the waste iron materials obtained through extraction of the vanadium from the vanadium slag, scrap iron and lime are uniformly mixed to obtain a ferro-vanadium smelting mixture, then a smelting electric furnace is uniformly filled with the ferro-vanadium smelting mixture for smelting, and after smelting is finished, a furnace body is subjected to air cooling, and then the FeV50 alloy and smelting slag are obtained through furnace disassembling. According to the method, the component characteristics and the cost advantage of the waste iron materials in the vanadium extraction process of the vanadium slag are fully utilized, and the finally-produced ferro-vanadium alloy product is qualified in component and high in quality.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a method for preparing FeV50 alloy from vanadium slag to extract vanadium from waste iron materials. Background technique [0002] Vanadium-iron alloys are widely used in vanadium-containing micro-alloyed steels. It has a dual strengthening mechanism of fine-grain strengthening and precipitation strengthening, thereby reducing overheating sensitivity and improving the strength and wear resistance of steel. Widely used in construction, aerospace, road and bridge industries. The production of ferro-vanadium alloy mainly includes thermal reduction methods such as silicothermal reduction method, aluminothermic reduction method and carbothermal reduction method. Due to the strong reduction activity of aluminum and the high calorific value of the reduction process, aluminothermic reduction is the most widely used. [0003] At present, the ferrovanadium alloy smelting methods in the world ca...

Claims

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Application Information

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IPC IPC(8): C22C33/06C22C35/00C22C38/12C22B7/00
CPCC22B7/001C22C33/06C22C35/00C22C38/12Y02P10/20
Inventor 余彬师启华陈海军尹丹凤
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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