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Production method of vanadium-aluminium alloy

A vanadium-aluminum alloy, production method technology, applied in the field of metallurgy, can solve problems such as unfavorable alloy purity

Inactive Publication Date: 2011-09-14
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, vanadium trioxide is also used as a raw material to produce vanadium-aluminum alloys, but pure use of vanadium trioxide is not conducive to improving the purity of the alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Vanadium trioxide and vanadium pentoxide are prepared into 100kg of raw materials, V in the raw material vanadium oxide: O=1: 2, the amount of aluminum powder added is 1.30 times of the theoretical reaction amount, and barium peroxide is used as a igniter on aluminum The aluminothermic reduction reaction is carried out in the thermal reduction reaction furnace, and the reaction ends in 102 seconds. After the aluminothermic reaction is completed, 74kg of vanadium-aluminum alloy product is obtained, which contains V 80.2wt%, Al 19.3wt%, Fe 0.24wt%, Si 0.21wt%, and the balance is impurities. During the reaction, the temperature in the reaction furnace is 1650-1900°C, and the recovery rate is 98.6%. The by-product gas is mainly the soot of the reactants, including the volatile matter of vanadium powder and the steam of aluminum particles. The dust collection hood is used for bag dust collection.

Embodiment 2

[0018] Vanadium trioxide and vanadium pentoxide are prepared into 100kg raw materials, V in the raw material vanadium oxide: O=1: 2.3, the amount of aluminum powder added is 1.43 times of the theoretical reaction amount, with barium peroxide as igniter, in aluminum The aluminothermic reduction reaction is carried out in the thermal reduction reaction furnace, and the furnace lining is made of the slag produced by itself in the previous batches, and the reaction ends in 90 seconds. After the aluminothermic reaction is completed, 71kg of vanadium-aluminum alloy product is obtained, which contains V 75.6wt%, Al 24.1wt%, Fe 0.23wt%, Si 0.22wt%, and the balance is impurities. During the reaction, the temperature in the reaction furnace is 1650-1950°C, and the recovery rate is 97.7%. The by-product gas is mainly the soot of the reactants, including the volatile matter of vanadium powder and the steam of aluminum particles. The dust collection hood is used for bag dust collection.

Embodiment 3

[0020] Vanadium trioxide and vanadium pentoxide are prepared into 100kg raw material, V in the raw material vanadium oxide: O=1: 1.7, the addition of aluminum powder is 1.26 times of the theoretical reaction amount, with barium peroxide as the igniter, in aluminum The aluminothermic reduction reaction is carried out in the thermal reduction reaction furnace, and the furnace lining is made of the slag produced by itself in the previous batches, and the reaction ends in 98 seconds. After the aluminothermic reaction is completed, 76kg of vanadium-aluminum alloy product is obtained, which contains V 83.9wt%, Al 15.3wt%, Fe 0.26wt%, Si 0.23wt%, and the balance is impurities. During the reaction, the temperature in the reaction furnace is 1650-1850°C, and the recovery rate is 98.1%. The by-product gas is mainly the soot of the reactants, including the volatile matter of vanadium powder and the steam of aluminum particles. The dust collection hood is used for bag dust collection.

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Abstract

The invention belongs to the field of metallurgy, and particularly relates to a production method of vanadium-aluminium alloy. The invention aims to solve the technical problem of providing the production method of vanadium-aluminium alloy. By using the method, no heat removal agent and heat assisting agent need to be added, and the content of Fe and Si in the prepared product is below 0.30wt%. The production method of vanadium-aluminium alloy is characterized in that raw materials are ignited and reduced in a reaction device to obtain vanadium-aluminium alloy and slag; vanadium oxide and metallic aluminium serve as raw materials, wherein the vanadium oxide is composed of vanadium trioxide and vanadium pentoxide, and the ratio of V to O in the vanadium oxide is equal to 1:(1.70-2.30). Finally, the vanadium-aluminium alloy contains 75-85wt% of V, less than or equal to 0.30wt% of Fe and less than or equal to 0.30wt% of Si, thereby satisfying the requirement on further subsequent processing. The method has the advantages of simple technology and low cost, and is especially suitable for mass production on a large batch; and meanwhile, the proportion of the raw materials is properly adjusted, and heat removal agent and heat assisting agent do not need to be added so as to prevent the pollution on alloy ingredients.

Description

technical field [0001] The invention belongs to the field of metallurgy, in particular to a method for producing vanadium-aluminum alloys. Background technique [0002] Vanadium-aluminum alloy is a basic raw material for titanium alloy, which is currently the second largest application field after the application of vanadium in steel. Ti-6Al-4V (containing 4wt% V) and Ti-8Al-1Mo-1V, these two titanium alloys account for 50wt% of the titanium alloy market in total, and are mainly used in the production of jet engines, high-speed aircraft skeletons and rocket engine casings. The vanadium used in titanium alloy production is added in the form of vanadium aluminum alloy. Japan, the United States, the United Kingdom and other countries are further increasing the application research of vanadium-containing titanium alloys in civilian industries. [0003] International companies producing vanadium-aluminum alloys mainly include German Electrometallurgical Company, American Readin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B5/04C22C1/02
Inventor 陈海军孙朝晖刘丰强王永刚李千文鲜勇周芳孟伟巍付自碧
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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