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A method for processing aluminum-vanadium sandwich alloy slag

An alloy slag, aluminum vanadium technology, applied in the direction of improving process efficiency, can solve the problems of decreased alloy yield, large content, increased cost, etc., and achieve the effects of reducing shrinkage cavities, slowing down temperature drop, and excellent refractory performance.

Active Publication Date: 2019-05-10
HEBEI IRON AND STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the temperature during preparation is generally above 1800°C, it is easy to cause a large amount of alloys to be contained in the slag during the smelting process, resulting in a significant drop in the yield of the alloy and an increase in cost

Method used

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  • A method for processing aluminum-vanadium sandwich alloy slag
  • A method for processing aluminum-vanadium sandwich alloy slag
  • A method for processing aluminum-vanadium sandwich alloy slag

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preparation example Construction

[0064] In the present invention, conventional preparation devices in the field can be used to process aluminum-vanadium sandwich alloy slag, that is, the operation of slag-liquid separation-ultrasonic refining. Such as figure 2 As shown, the structure and operation of the ultrasonic refining reaction tank adopted when a specific embodiment of the present invention handles aluminum-vanadium alloy slag can be: the vanadium-aluminum alloy slag and thermite reactant (that is, the raw material for preparing the alloy slag) ) is placed in the reaction pool 2; the heating source 3 is distributed on both sides or around the reaction pool 2, and the reaction pool is heated and heated when it is powered on; the ultrasonic generator 1 is placed at the bottom or side of the reaction pool 2, and high-frequency waves are provided Vibrate and physically stir the reaction pool 2 frequently; wherein, when the ultrasonic generating device 1 is located at the side of the reaction pool 2, the po...

Embodiment 1

[0067] A kind of ultrasonic refining processing folder alloy slag reclaims the method for 55 vanadium aluminum alloy, carries out according to the following process steps:

[0068] (1) Mechanically crushing the inclusion alloy slag produced by the preparation of 55 vanadium aluminum alloy to obtain an inclusion alloy slag powder with a particle size of 180 μm;

[0069] (2) According to the mass ratio of 3:2, mix the alloy slag powder obtained in step (1) with the thermite reactant in the reaction tank; in terms of mole percentage, the thermite reactant contains 11.87mol% V 2 o 5 , 84.63mol% Al and 3.50mol% CaF 2 ; Heating to 1000°C and igniting by resistance heating, so that aluminum and vanadium pentoxide undergo aluminothermic reduction reaction;

[0070] (3) After the reduction reaction described in step (2) is carried out for 8 minutes, the bottom of the reaction tank is subjected to ultrasonic refining treatment, the ultrasonic refining power is 1300W, and the time is ...

Embodiment 2

[0075] A kind of ultrasonic refining treatment folder alloy slag reclaims the method for 65 vanadium aluminum alloy, carries out according to the following process steps:

[0076] (1) Mechanically crushing the inclusion alloy slag produced by preparing 65 vanadium aluminum alloy to obtain an inclusion alloy slag powder with a particle size of 180 μm;

[0077] (2) According to the mass ratio of 3:2, the mixed alloy slag powder obtained in step (1) is mixed with the thermite reactant in the reaction tank; in terms of mole percentage, the thermite reactant contains 12.38mol% V 2 o 5 , 83.77mol% Al and 3.85mol% CaF 2 ; Heating to 900°C and igniting by resistance heating, so that aluminum and vanadium pentoxide undergo aluminothermic reduction reaction;

[0078] (3) After the reduction reaction described in step (2) is carried out for 10 minutes, the bottom of the reaction tank is subjected to ultrasonic refining treatment, the ultrasonic refining power is 1200W, and the time is...

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Abstract

The invention relates to a method for treatment of aluminum-vanadium alloy-mixed slag, which includes the following steps: 1) mixing the aluminum-vanadium alloy-mixed slag with an aluminothermic reaction substance in a reaction pool and igniting the mixture to perform a reduction reaction; 2) during the reduction reaction, performing ultrasonic refining treatment to the bottom of the reaction poolso as to melt the alloy-mixed slag powder into a liquid phase; 3) continuously heating the reaction pool and then maintaining the temperature, wherein during the process, the bottom of the reaction pool is subjected to ultrasonic refining treatment and standing treatment alternately; 4) after the heat preservation finished, performing ultrasonic refining treatment and standing deposition treatment alternately during a natural cooling process, and when molten alloy is solidified, collecting a slag phase and aluminum-vanadium alloy. In the treatment process, the aluminothermic reaction substance is added, and under the effect of ultrasonic refining, recovery rate of aluminum-vanadium in the residue can reach more than 99%, and the ratio of A-grade product of aluminum-vanadium alloy is increased to more than 90%. The method greatly improves comprehensive economic benefit. The product can be widely applied to high-tech fields such as aerospace, nuclear energy and the like, and has great application prospect.

Description

technical field [0001] The invention relates to the technical field of metallurgical engineering, in particular to a method for processing aluminum-vanadium-containing alloy slag. Background technique [0002] Vanadium-aluminum alloy is an important raw material for the production of high-strength titanium alloys as a master alloy. Since vanadium-aluminum master alloys are added to titanium alloys, they can improve the heat resistance and cold workability of the alloys. Therefore, vanadium-containing titanium alloys are widely used in military and aerospace industries. Aerospace industry and civil industry. Ti-6Al-4V alloy is the most widely used vanadium-titanium alloy among many titanium alloys. The annual production of Ti-6Al-4V alloy requires a large amount of vanadium-aluminum master alloy, which is equivalent to 2000 tons of vanadium metal. The consumption of master alloy is about 3500-4000 tons. This requires the production of a large number of high-quality vanadium...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B5/04C22B9/02
CPCC22B5/04C22B7/001C22B9/026Y02P10/20
Inventor 王娜白瑞国张娜吴春亮董自慧李兰杰陈华李九江
Owner HEBEI IRON AND STEEL
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