CN112779447A - Method for preparing vanadium-aluminum alloy by using vanadium trioxide - Google Patents
Method for preparing vanadium-aluminum alloy by using vanadium trioxide Download PDFInfo
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- CN112779447A CN112779447A CN202011487100.3A CN202011487100A CN112779447A CN 112779447 A CN112779447 A CN 112779447A CN 202011487100 A CN202011487100 A CN 202011487100A CN 112779447 A CN112779447 A CN 112779447A
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/02—Alloys based on vanadium, niobium, or tantalum
- C22C27/025—Alloys based on vanadium, niobium, or tantalum alloys based on vanadium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Abstract
The invention relates to the technical field of vanadium-aluminum alloy production, and particularly discloses a method for preparing a vanadium-aluminum alloy by using vanadium trioxide. The method for preparing the vanadium-aluminum alloy by using vanadium trioxide comprises the following process steps: a. uniformly mixing vanadium trioxide, vanadium pentoxide, metal aluminum and a slag former according to the mass ratio of 1:1.5-2:1-2:0.15-0.25 to obtain a mixed material; b. adding a strong oxidant on the surface of the mixed material; c. igniting the strong oxidant and the mixed material by using an igniter, and burning and cooling to obtain the vanadium-aluminum alloy. According to the method, vanadium trioxide is used for replacing part of vanadium pentoxide to prepare the vanadium-aluminum alloy, so that the cost of raw materials for preparing the vanadium-aluminum alloy by using the vanadium pentoxide is remarkably reduced, the whole reaction process can be finished by one-time ignition without additional heat supplement, the cooling process can be finished by lowering the temperature under natural conditions, and a large amount of equipment cost and time cost are saved.
Description
Technical Field
The invention relates to the technical field of vanadium-aluminum alloy production, in particular to a method for preparing a vanadium-aluminum alloy by using vanadium trioxide.
Background
Vanadium-aluminum alloy is used as an alloy additive and mainly used for producing titanium alloy, and vanadium pentoxide is used as a main raw material in the current vanadium-aluminum alloy production at home and abroad.
With the development of the titanium alloy field, the market demand of the vanadium-aluminum alloy is increased year by year, and the competition of the vanadium-aluminum alloy industry is further intensified. For each enterprise, the market competitiveness of the enterprise is improved, on one hand, the product quality of the enterprise needs to be improved, and the use requirements of downstream customers are met; and the production cost of the vanadium-aluminum alloy needs to be reduced on the other side so as to improve the profitability of the product.
One way to reduce the production cost of vanadium-aluminum alloy is to reduce the raw material cost. As is well known, in the related products of vanadium, the market price of vanadium pentoxide is higher than that of vanadium trioxide, and if in the production process of the vanadium-aluminum alloy, the vanadium pentoxide is replaced by the vanadium trioxide on the premise of not affecting the product quality, the production cost of the vanadium-aluminum alloy can be obviously reduced, so that the profitability of the vanadium-aluminum alloy is improved, and the enterprise competitiveness is improved. However, the existing method for preparing vanadium-aluminum alloy by using vanadium trioxide needs to rely on external heating in the reaction process, and cooling needs to be carried out in vacuum or protective atmosphere after the reaction is finished. The corresponding disadvantages are that a structure capable of heating and a complex furnace body thereof need to be manufactured, and the cooling mode after reaction is not beneficial to realizing batch industrial production. The process route is not obvious in the aspect of reducing the cost, and even the production cost of the vanadium-aluminum alloy is increased, so that the market competitiveness of enterprises is not favorably improved.
Disclosure of Invention
Aiming at the problems of the existing method for preparing the vanadium-aluminum alloy by using vanadium trioxide, the invention provides the method for preparing the vanadium-aluminum alloy by using vanadium trioxide, and the method is simple to operate, does not need external heating or a specific cooling mode, and obviously reduces the production cost of the vanadium-aluminum alloy.
In order to achieve the purpose of the invention, the embodiment of the invention adopts the following technical scheme:
a method for preparing vanadium-aluminum alloy by using vanadium trioxide comprises the following process steps:
a. uniformly mixing vanadium trioxide, vanadium pentoxide, metal aluminum and a slag former according to the mass ratio of 1:1.5-2:1-2:0.15-0.25 to obtain a mixed material;
b. adding a strong oxidant on the surface of the mixed material;
c. igniting the strong oxidant by using an igniter to enable the mixed material to be combusted and cooled to obtain the vanadium-aluminum alloy.
According to the method for preparing the vanadium-aluminum alloy by using the vanadium trioxide, the vanadium trioxide is used for replacing part of vanadium pentoxide to prepare the vanadium-aluminum alloy, so that the cost of raw materials for preparing the vanadium-aluminum alloy by using the vanadium pentoxide is obviously reduced. Meanwhile, according to the method for preparing the vanadium-aluminum alloy, provided by the invention, the mass ratio of vanadium trioxide to vanadium pentoxide to metal aluminum to the slag former is set, so that the mixed material can simultaneously reach the balance of reaction heat and the material in the combustion process, the reaction process is effectively controlled, the process can be finished in a reaction crucible by one-time ignition, the reaction process is not required to be adjusted by external heating, and additional heat supplement is not required. In addition, according to the method for preparing the vanadium-aluminum alloy, after the combustion reaction of the mixed materials is finished, a layer of airtight slag layer can be formed on the surface of the materials, so that the temperature of the cooling process of the combustion materials can be reduced under natural conditions, a specific vacuum condition or inert atmosphere does not need to be set, the surface of the vanadium-aluminum alloy is ensured to be an oxidation-free surface, and the high-quality vanadium-aluminum alloy is obtained.
The method is simple to operate, not only obviously reduces the production cost of the vanadium-aluminum alloy in the aspect of raw material use, but also saves a large amount of equipment cost and time cost, and has extremely high popularization and application values.
Preferably, the vanadium trioxide contains, by mass, V more than or equal to 62.00%, P less than or equal to 0.04%, S less than or equal to 0.08%, and K2O+Na2O is less than or equal to 1.0 percent, C is less than or equal to 0.1 percent; the particle size of the vanadium trioxide<1 mm. The quality of the obtained vanadium-aluminum alloy can be further improved by limiting the content of each component of the vanadium trioxide, and the particle size of the vanadium-aluminum alloy is more beneficial to the full combustion of materials and the promotion of the reaction process of reaction materials.
Preferably, the vanadium pentoxide contains, by mass, V not less than 98.00%, P not more than 0.05%, S not more than 0.10%, and K2O+Na2O is less than or equal to 1.0 percent; the particle size of the vanadium pentoxide<1 mm. The content of each component of the vanadium pentoxide is limited, so that the quality of the obtained vanadium-aluminum alloy can be further improved, and the particle size of the vanadium-aluminum alloy is more beneficial to full combustion of materials and promotion of the reaction process of reaction materials.
Preferably, the mass percentage content of Al in the metal aluminum is more than or equal to 99.85 percent, Si is less than or equal to 0.080 percent, and Fe is less than or equal to 0.12 percent; the particle size of the metallic aluminum is <1 mm.
Preferably, the slagging agent is CaO.
Preferably, the purity of the CaO is more than or equal to 95.00 percent by mass percentage; SiO in the CaO2≤0.4％，Fe2O3Less than or equal to 0.15 percent; the grain size of CaO<1mm。
Preferably, the strong oxidant is potassium chlorate.
Preferably, the mass ratio of the potassium chlorate to the mixed material is 1: 25-200.
The potassium chlorate with the specific amount is added into the mixture material, so that the material can be fully combusted, and explosive combustion can be avoided.
Preferably, step c is performed in a reaction vessel having an alumina inner wall, and the volume of the strong oxidant and the mixed material is less than 2/3 of the volume of the reaction vessel. By controlling the adding volume of the mixed materials in the reaction vessel, the full reaction of the materials can be ensured. Meanwhile, the reaction container with the alumina inner wall is used, so that foreign impurities can not be introduced.
Preferably, the cooling method is natural cooling. And the natural cooling is further beneficial to the smooth separation of the slag and the gold after the reaction is finished, and the subsequent slag and gold separation step is omitted.
Drawings
Fig. 1 is a process flow chart of preparing a vanadium-aluminum alloy by using vanadium trioxide in embodiment 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The method for preparing the vanadium-aluminum alloy by using vanadium trioxide comprises the following steps:
a. uniformly mixing 50g of vanadium trioxide, 75g of vanadium pentoxide, 93g of metal aluminum and 8g of slag former to obtain a mixed material;
calculated according to the mass percentage:
in vanadium trioxide, TV: 63.50%, P: 0.012%, S: 0.08%, K2O+Na2O: 1.0%, C: 0.024% of granularity<1 mm; TV represents full V content;
in vanadium pentoxide, TV: 98.32%, P: 0.041%, S: 0.092%, K2O+Na2O: 0.68% by weight, particle size<1mm；
Al in metallic aluminum: 99.86%, Si: 0.04%, Fe: 0.05% and granularity less than 1 mm;
CaO in the slag former: 95.32% SiO2：0.38％，Fe2O3: 0.12% by weight, particle size<1mm。
b. Putting the mixed material into an alumina crucible, and adding 5g of potassium chlorate, wherein the total volume of the material is less than 2/3 of the volume of the alumina crucible;
c. igniting the materials in the alumina crucible by using an igniter to enable the materials to be combusted and react; and naturally cooling for 12 hours after the reaction is finished, and separating slag from gold to obtain the vanadium-aluminum alloy.
The vanadium-aluminum alloy with the grade of AlV55 can be obtained in the embodiment, and the vanadium-aluminum alloy completely meets the standard of YS/T579-.
Example 2
The method for preparing the vanadium-aluminum alloy by using vanadium trioxide comprises the following steps:
a. uniformly mixing 50g of vanadium trioxide, 90g of vanadium pentoxide, 93.1g of metal aluminum and 10g of slag former to obtain a mixed material;
calculated according to the mass percentage:
in vanadium trioxide, TV: 63.72%, P: 0.008%, S: 0.013%, K2O+Na2O: 0.62%, C: 0.018% by weight, particle size<1mm；
In vanadium pentoxide, TV: 98.57%, P: 0.037%, S: 0.095%, K2O+Na2O: 0.74% of particle size<1mm；
Al in metallic aluminum: 99.85%, Si: 0.04%, Fe: 0.04% and granularity less than 1 mm;
CaO in the slag former: 95.18% and SiO2：0.39％，Fe2O3: 0.15% by weight, particle size<1mm。
b. Putting the mixed material into an alumina crucible, and adding 1.3g of potassium chlorate, wherein the total volume of the material is less than 2/3 of the volume of the alumina crucible;
c. igniting the materials in the alumina crucible by using an igniter to enable the materials to be combusted and react; and naturally cooling for 15h after the reaction is finished, and separating slag from gold to obtain the vanadium-aluminum alloy.
The vanadium-aluminum alloy with the grade of AlV65 can be obtained in the embodiment, and the vanadium-aluminum alloy completely meets the standard of YS/T579-.
Example 3
The method for preparing the vanadium-aluminum alloy by using vanadium trioxide comprises the following steps:
a. uniformly mixing 50g of vanadium trioxide, 100g of vanadium pentoxide, 85.18g of metal aluminum and 12g of slag former to obtain a mixed material;
calculated according to the mass percentage:
in vanadium trioxide, TV: 63.68%, P: 0.006%, S: 0.018%, K2O+Na2O: 0.64%, C: 0.016% and granularity<1mm；
In vanadium pentoxide, TV: 98.57%, P: 0.037%, S: 0.095%, K2O+Na2O: 0.74% of particle size<1mm；
Al in metallic aluminum: 99.88%, Si: 0.04%, Fe: 0.06%, granularity is less than 1 mm;
CaO in the slag former: 95.04% and SiO2：0.35％，Fe2O3: 0.13% by weight, particle size<1mm。
b. Putting the mixed material into an alumina crucible, and adding 10g of potassium chlorate, wherein the total volume of the material is less than 2/3 of the volume of the alumina crucible;
c. igniting the materials in the alumina crucible by using an igniter to enable the materials to be combusted and react; and naturally cooling for 14h after the reaction is finished, and separating slag from gold to obtain the vanadium-aluminum alloy.
The vanadium-aluminum alloy with the grade of AlV75 can be obtained in the embodiment, and the vanadium-aluminum alloy completely meets the standard of YS/T579-.
Example 4
The method for preparing the vanadium-aluminum alloy by using vanadium trioxide comprises the following steps:
a. uniformly mixing 50g of vanadium trioxide, 100g of vanadium pentoxide, 74.11g of metal aluminum and 8g of slag former to obtain a mixed material;
calculated according to the mass percentage:
in vanadium trioxide, TV: 64.10%, P: 0.004%, S: 0.015%, K2O+Na2O: 0.52%, C: 0.013%, particle size<1mm；
In vanadium pentoxide, TV: 98.49%, P: 0.035%, S: 0.089%, K2O+Na2O: 0.68% by weight, particle size<1mm；
Al in metallic aluminum: 99.85%, Si: 0.035%, Fe: 0.051%, granularity is less than 1 mm;
CaO in the slag former: 95.11% SiO2：0.33％，Fe2O3: 0.14% by weight, particle size<1mm。
b. Putting the mixed material into an alumina crucible, and adding 2.5g of potassium chlorate, wherein the total volume of the material is less than 2/3 of the volume of the alumina crucible;
c. igniting the materials in the alumina crucible by using an igniter to enable the materials to be combusted and react; and naturally cooling for 15h after the reaction is finished, and separating slag from gold to obtain the vanadium-aluminum alloy.
The vanadium-aluminum alloy with the grade of AlV85 can be obtained in the embodiment, and the vanadium-aluminum alloy completely meets the standard of YS/T579-.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for preparing vanadium-aluminum alloy by using vanadium trioxide is characterized by comprising the following steps: the method comprises the following process steps:
a. uniformly mixing vanadium trioxide, vanadium pentoxide, metal aluminum and a slag former according to the mass ratio of 1:1.5-2:1-2:0.15-0.25 to obtain a mixed material;
b. adding a strong oxidant on the surface of the mixed material;
c. igniting the strong oxidant by using an igniter to enable the mixed material to be combusted and cooled to obtain the vanadium-aluminum alloy.
2. The method for preparing the vanadium-aluminum alloy by using vanadium trioxide as claimed in claim 1, wherein: according to the mass percentage, V is more than or equal to 62.00 percent, P is less than or equal to 0.04 percent, S is less than or equal to 0.08 percent, and K is contained in the vanadium trioxide2O+Na2O is less than or equal to 1.0 percent, C is less than or equal to 0.1 percent; the particle size of the vanadium trioxide<1mm。
3. The method for preparing vanadium-aluminum by using vanadium trioxide as claimed in claim 1A method of alloying characterized by: according to the mass percentage, V is more than or equal to 98.00 percent, P is less than or equal to 0.05 percent, S is less than or equal to 0.10 percent, and K is contained in the vanadium pentoxide2O+Na2O is less than or equal to 1.0 percent; the particle size of the vanadium pentoxide<1mm。
4. The method for preparing the vanadium-aluminum alloy by using vanadium trioxide as claimed in claim 1, wherein: according to the mass percentage, Al in the metal aluminum is more than or equal to 99.85 percent, Si is less than or equal to 0.080 percent, and Fe is less than or equal to 0.12 percent; the particle size of the metallic aluminum is <1 mm.
5. The method for preparing the vanadium-aluminum alloy by using vanadium trioxide as claimed in claim 1, wherein: the slagging agent is CaO.
6. The method for preparing the vanadium-aluminum alloy by using vanadium trioxide as claimed in claim 5, wherein: according to the mass percentage, the purity of CaO is more than or equal to 95.00 percent; SiO in the CaO2≤0.4％，Fe2O3Less than or equal to 0.15 percent; the grain size of CaO<1mm。
7. The method for preparing the vanadium-aluminum alloy by using vanadium trioxide as claimed in claim 1, wherein: the strong oxidant is potassium chlorate.
8. The method for preparing the vanadium-aluminum alloy by using vanadium trioxide as claimed in claim 7, wherein: the mass ratio of the potassium chlorate to the mixed material is 1: 25-200.
9. The method for preparing the vanadium-aluminum alloy by using vanadium trioxide as claimed in claim 1, wherein: and the step c is carried out in a reaction container with the inner wall made of aluminum oxide, and the volume of the strong oxidant and the mixed material is less than 2/3 of the volume of the reaction container.
10. The method for preparing the vanadium-aluminum alloy by using vanadium trioxide as claimed in claim 1, wherein: the cooling method is natural cooling.
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| CN108179291A (en) * | 2018-02-27 | 2018-06-19 | 河钢股份有限公司承德分公司 | A kind of ultrasonic wave smelting reducing device and the method for smelting vananum |
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2020
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002180145A (en) * | 2000-12-11 | 2002-06-26 | Sumitomo Metal Mining Co Ltd | Method for producing high purity metallic vanadium |
| CN102181640A (en) * | 2011-04-15 | 2011-09-14 | 攀钢集团钢铁钒钛股份有限公司 | Production method of vanadium-aluminium alloy |
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| CN111440977A (en) * | 2020-06-03 | 2020-07-24 | 攀钢集团研究院有限公司 | Method for preparing AlV55 alloy |
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