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Vanalium preparation method

A technology of vanadium-aluminum alloy and metal aluminum, applied in the direction of improving process efficiency, etc., can solve safety problems, reduce metal yield, feed speed splashing and other problems, achieve low cost, low impurity content, and avoid splashing Effect

Active Publication Date: 2011-08-17
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Too high a feed rate can easily cause splashing, causing safety issues, and can also reduce metal yields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Get 100kg of vanadium pentoxide and 55.6kg of aluminum grains as raw materials, the weight ratio of vanadium pentoxide and aluminum grains is 1.8: 1, the mixture of analytically pure barium peroxide and aluminum powder is the ignition agent, and barium peroxide is 230g , 70g of aluminum powder, put it on top of the raw material and wrap it with a small amount of charge, and use the heat generated by the reaction to initiate the main reaction after ignition. The aluminothermic reduction reaction is carried out in the aluminothermic reduction reaction furnace (furnace lining is made of slag), the feed rate is 31.12kg / min, and the feed amount per minute accounts for 20% of the total weight of raw materials. The feed is completed after 5 minutes, and the aluminothermic reaction takes about 5 minutes After completion, 62.1kg of vanadium-aluminum alloy product was obtained, which contained V 90wt%, Al 9.4wt%, Fe 0.25wt%, Si 0.21wt%, and the balance was impurity elements. Duri...

Embodiment 2

[0016] Get 100kg of vanadium pentoxide and 63.6kg of aluminum grains as raw materials, the weight ratio of vanadium pentoxide and aluminum grains is 1.57: 1, the mixture of analytically pure barium peroxide and aluminum powder is the ignition agent, and the barium peroxide is 310g , 90g of aluminum powder, put it on top of the raw material and wrap it with a small amount of charge, ignite and use the heat generated by its reaction to initiate the main reaction. The aluminothermic reduction reaction is carried out in the aluminothermic reduction reaction furnace (furnace lining is made of slag), the feed rate is 16.36kg / min, and the feed amount per minute accounts for 10% of the total weight of raw materials. The feed is completed after 10 minutes, and the aluminothermic reaction takes about 10 minutes Finish. Obtain 65.75kg vanadium-aluminum alloy product, wherein contain V 85wt%, Al 14.5wt%, Fe 0.22wt%, Si 0.20wt%, the balance is the impurity element. During the reaction, th...

Embodiment 3

[0018] Get 100kg of vanadium pentoxide and 83.3kg of aluminum grains as raw materials, the weight ratio of vanadium pentoxide and aluminum grains is 1.2: 1, the mixture of analytically pure barium peroxide and aluminum powder is the ignition agent, and barium peroxide is 385g , 115g of aluminum powder, put it on top of the raw material and wrap it with a small amount of charge, ignite and use the heat generated by the reaction to initiate the main reaction. The aluminothermic reduction reaction is carried out in the aluminothermic reduction reaction furnace (furnace lining is made of slag), the feed rate is 9.165kg / min, and the feed amount per minute accounts for 5% of the total weight of the raw materials. The feed is completed after 20 minutes, and the aluminothermic reaction takes about 20 minutes Finish. 89.8kg of vanadium-aluminum alloy products were obtained, which contained V 65wt%, Al 34wt%, Fe 0.26wt%, Si 0.23wt%, and the balance was impurity elements. During the rea...

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Abstract

The invention belongs to the field of metallurgy and particularly relates to a vanalium preparation method. The vanalium preparation method provided by the invention is low in cost and ensures high purity of obtained alloy. The technical scheme provided by the invention is as follows: in the vanalium preparation method, vanadium pentoxide and metallic aluminium are used as raw materials and are subjected to ignition reduction in a reaction device to obtain vanalium and furnace clinker; and a continuous feeding manner is adopted for the reaction device during feeding, and the feeding speed is 5-40kg / min. Compared with the prior art, the vanalium preparation method provided by the invention has the advantages that no coolant is added for controlling heat so that the cost is lower and the requirement for mass industrial production is completely met; and the produced vanalium is low in impurity content, the finished vanalium contains 65-91wt% of V, 9-35wt% of Al, not more than 0.3wt% of Fe and not more than 0.3wt% of Si, and the obtained vanalium has higher purity and meets the requirement of subsequent further processing.

Description

technical field [0001] The invention belongs to the field of metallurgy, in particular to a method for preparing vanadium-aluminum alloys. Background technique [0002] 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 alloys is added in the form of vanadium-aluminum alloys, which are usually produced by the aluminothermic method, using vanadium pentoxide, metal aluminum and inert substances (commonly known as antipyretics) as raw materials, and put them into the reaction device at one time The vanadium-aluminum alloy and slag are produced by medium ignition reduction. Since the reaction of vanadium pentoxide and metal aluminum releases a large amount of heat, the heat is greatly excessive, making the reaction explosive. Under the condition of adiabatic, it is e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/02C22C1/05C22B5/04
CPCY02P10/20
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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