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Production method of low-impurity vanadium-aluminium alloy

A vanadium-aluminum alloy and production method technology, which is applied in the field of vanadium-aluminum alloy preparation, can solve problems such as limiting the output of vanadium-aluminum alloy and increasing manufacturing costs, and achieve the effects of reduced impurity content, high alloy purity, and increased vanadium yield

Active Publication Date: 2014-05-28
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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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

example 1

[0029] Take 100Kg vanadium pentoxide (purity is 99.6wt%, particle size is 0.13mm), 55.7Kg aluminum particles (purity is 99.7wt%, particle size is 3mm) as raw materials, that is, the weight ratio of vanadium pentoxide and aluminum particles is 1.8:1, and add the crushed alloy with particle size less than 0.25mm produced by the previous batch of vanadium-aluminum alloy products after crushing as coolant, the amount of crushed alloy added is 63.5Kg, and analytically pure barium peroxide and aluminum powder are used as ignition agents , the aluminothermic reduction reaction is carried out in the aluminothermic reduction reaction furnace whose lining is made of this slag. After the aluminothermic reaction is completed, 62.3Kg of vanadium-aluminum alloy products are obtained, which contain V87.13wt%, Al12.6wt%, Fe0.15wt%, Si0.11wt%.

example 2

[0031] Take 100Kg vanadium pentoxide (purity is 99.7wt%, particle size is 0.14mm), 70.5Kg aluminum particles (purity is 99.8wt%, particle size is 4mm) as raw materials, that is, the weight ratio of vanadium pentoxide and aluminum particles is 1.41:1, and add the crushed alloy with particle size less than 0.25mm produced by the previous batch of vanadium-aluminum alloy products as the coolant, the amount of the crushed alloy is 48.7Kg, and the analytically pure barium peroxide and aluminum powder are used as the ignition agent , the aluminothermic reduction reaction is carried out in the aluminothermic reduction reaction furnace whose lining is made of this slag. After the aluminothermic reaction is completed, 65.76Kg of vanadium aluminum alloy products are obtained, which contain V73.08wt%, Al26.6wt%, Fe0.12wt%, Si0.19wt%.

example 3

[0033] Take 100Kg vanadium pentoxide (purity is 99.8wt%, particle size is 0.15mm), 83.5Kg aluminum particles (purity is 99.85wt%, particle size is 4mm) as raw materials, that is, the weight ratio of vanadium pentoxide and aluminum particles is 1.15:1, and add the crushed alloy with particle size less than 0.25mm produced by the previous batch of vanadium-aluminum alloy products as the coolant, the amount of the crushed alloy is 35.7Kg, and the analytically pure barium peroxide and aluminum powder are used as the ignition agent , the aluminothermic reduction reaction is carried out in the aluminothermic reduction reaction furnace whose lining is made of this slag. After the aluminothermic reaction is completed, 89.9Kg of vanadium-aluminum alloy products are obtained, which contain V62.9wt%, Al36.8wt%, Fe0.16wt%, Si0.13wt%.

[0034] It can be seen from the above examples that the vanadium-aluminum alloy product obtained by the present invention has a V content of 62.9-87.13wt%, ...

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Abstract

The invention provides a production method of low-impurity vanadium-aluminium alloy. The production method comprises the following steps: uniformly mixing vanadium pentoxide, metallic aluminium and a coolant which are used as furnace burden and putting the mixture into an open reacting furnace, and igniting and smelting to obtain vanadium-aluminium alloy and slag, wherein the weight ratio of vanadium pentoxide to metallic aluminium is 1.15-1.8:1; granularity of the coolant is vanadium-aluminium alloy particles with granularity being less than 0.25mm; the addition amount of the coolant can guarantee that calorific value per furnace burden is controlled within 3300-3500 kJ / kg; and the calorific value per furnace burden equals to the ratio of heat generated by a reaction between vanadium pentoxide and metallic aluminium to the total addition amount of vanadium pentoxide, metallic aluminium and the coolant. The content of V in the vanadium-aluminium alloy produced by the method provided by the invention is 62.9-87.13wt%, the content of Al is 12.6-36.8wt%, the content of Fe is no greater than 0.16wt%, and the content of Si is no greater than 0.19wt%.

Description

technical field [0001] The invention belongs to the technical field of vanadium-aluminum alloy preparation, and more specifically relates to a method for producing low-impurity vanadium-aluminum alloy. 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. The two titanium alloys Ti-6Al-4V and Ti-8Al-1Mo-1V together account for 50% of the titanium alloy market 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, vanadium pentoxide is generally used as raw material in the producti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/00C22C27/02C22B5/04
Inventor 陈海军孙朝晖邓孝伯尹丹凤王永钢程晓哲鲜勇李海丰
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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