Preparation method of vanadium-aluminum alloy

A technology of vanadium-aluminum alloy and vanadium trioxide, which is applied in the field of metallurgy, can solve the problems of limiting the output of vanadium-aluminum alloy and increasing manufacturing costs, and achieves the effect of low cost and low impurity content

Inactive Publication Date: 2011-04-27
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since the aluminothermic reaction is carried out in a closed pressure vessel, the output of vanadium-aluminum alloy is greatly limited. In addition, due to the requirement of strong pressure resistance of the equipment, the manufacturing cost will be increased

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Get 200kg raw material, wherein, the weight ratio of vanadium trioxide and vanadium pentoxide is 1: 1, and the Al powder addition is that the raw material is fully reduced to 1.32 times of V theoretical consumption, with analytically pure barium peroxide as ignition agent, The aluminothermic reduction reaction is carried out in the aluminothermic reduction reaction furnace, and the reaction ends in 105 seconds. After the aluminothermic reaction is completed, 147kg of vanadium-aluminum alloy product is obtained, which contains 80.1wt% V, 19.1wt% Al, 0.25wt% Fe, 0.21wt% Si, 0.01wt% S, and 0.11wt% C. In addition, the slag obtained after the above reaction can be used to make the lining of the reaction furnace, which is conducive to further reducing the impurity content in the vanadium-aluminum alloy in the subsequent production of vanadium-aluminum alloy.

Embodiment 2

[0019] Get 200kg raw material, wherein, the weight ratio of vanadium trioxide and vanadium pentoxide is 1: 2, and the Al powder addition is that raw material is completely reduced to 1.45 times of V theoretical consumption, is ignition agent with analytically pure barium peroxide, The aluminothermic reduction reaction is carried out in the aluminothermic reduction reaction furnace, and the reaction ends in 91 seconds. After the aluminothermic reaction is completed, 155kg of vanadium-aluminum alloy product is obtained, which contains 75.5wt% of V, 23.7wt% of Al, 0.22wt% of Fe, 0.20wt% of Si, 0.01wt% of S, and 0.10wt% of C. In addition, the slag obtained after the above reaction can be used to make the lining of the reaction furnace, which is conducive to further reducing the impurity content in the vanadium-aluminum alloy in the subsequent production of vanadium-aluminum alloy.

Embodiment 3

[0021] Get 200kg raw material, wherein, the weight proportion of vanadium trioxide and vanadium pentoxide is 1: 1.5, and Al powder addition is that raw material is fully reduced to 1.24 times of V theoretical consumption, is ignition agent with analytically pure barium peroxide, The aluminothermic reduction reaction is carried out in the aluminothermic reduction reaction furnace, and the reaction ends in 98 seconds. After the aluminothermic reaction is completed, 138kg of vanadium-aluminum alloy product is obtained, which contains 83.9wt% V, 15.3wt% Al, 0.26wt% Fe, 0.23wt% Si, 0.01wt% S, and 0.11wt% C. In addition, the slag obtained after the above reaction can be used to make the lining of the reaction furnace, which is conducive to further reducing the impurity content in the vanadium-aluminum alloy in the subsequent production of vanadium-aluminum alloy.

[0022] The vanadium-aluminum alloy product obtained by the present invention has a V content of 75wt% to 85wt%, Fe≤0.3w...

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PUM

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Abstract

The invention discloses a preparation method of a vanadium-aluminum alloy, which can lower the producing cost of the vanadium-aluminum alloy. In the method, vanadium trioxide and vanadium pentoxide are taken as raw materials, Al powder is taken as a reducing agent and the vanadium-aluminum alloy and slag are obtained by igniting and reducing, wherein the weight ratio of the vanadium trioxide to the vanadium pentoxide is 1:1-2; and the using amount of the Al powder is 1.2 to 1.5 times of V ideal using amount (namely, the using amount of the Al powder needed for fully reducing the vanadium trioxide and the vanadium pentoxide into metal vanadium) of fully reduced raw materials. Compared with the conventional process, the method has lower cost and is fully accordant with the requirement on mass industrial production; moreover, the produced vanadium-aluminum alloy has low impurity content; a final vanadium-aluminum alloy comprises the following components in percentage by weight: 75 to 85 percent of V, less than or equal to 0.3 percent of Fe and less than or equal to 0.3 percent of Si; and the requirements on further subsequent processing are met.

Description

technical field [0001] The invention relates to a method for preparing a vanadium-aluminum alloy, belonging to the field of metallurgy. 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 and Ti-8Al-1Mo-1V, these two titanium alloys account for 50% 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 the production of titanium alloy is added in the form of vanadium aluminum alloy. Countries such as Japan, the United States, and the United Kingdom are further increasing the application research of vanadium-containing titanium alloys in civilian industries. [0003] At present, in the production process of vanadium aluminum alloy, vanadium pentoxide is generally used as raw material, and vanadium aluminum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C27/02
Inventor 孙朝晖陈海军刘丰强鲜勇李千文王永刚周芳孟伟巍
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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