CN114807621A - Metal and method for removing vanadium element in primary aluminum molten aluminum - Google Patents
Metal and method for removing vanadium element in primary aluminum molten aluminum Download PDFInfo
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- CN114807621A CN114807621A CN202210383261.0A CN202210383261A CN114807621A CN 114807621 A CN114807621 A CN 114807621A CN 202210383261 A CN202210383261 A CN 202210383261A CN 114807621 A CN114807621 A CN 114807621A
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- Prior art keywords
- aluminum liquid
- aluminum
- vanadium
- primary
- purified
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 134
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 62
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 10
- 239000002184 metal Substances 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 80
- 238000003723 Smelting Methods 0.000 claims abstract description 16
- 239000000956 alloy Substances 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 16
- 238000007670 refining Methods 0.000 claims abstract description 13
- 238000005507 spraying Methods 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000012298 atmosphere Substances 0.000 claims abstract description 8
- 239000011261 inert gas Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 231100000331 toxic Toxicity 0.000 abstract description 2
- 230000002588 toxic effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 229910001570 bauxite Inorganic materials 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- VCUFZILGIRCDQQ-KRWDZBQOSA-N N-[[(5S)-2-oxo-3-(2-oxo-3H-1,3-benzoxazol-6-yl)-1,3-oxazolidin-5-yl]methyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C1O[C@H](CN1C1=CC2=C(NC(O2)=O)C=C1)CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F VCUFZILGIRCDQQ-KRWDZBQOSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229910001610 cryolite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
- C22B9/103—Methods of introduction of solid or liquid refining or fluxing agents
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/06—Obtaining aluminium refining
- C22B21/062—Obtaining aluminium refining using salt or fluxing agents
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a metal for removing vanadium element in primary aluminum liquid, wherein the metal is Al-B intermediate alloy. A method for removing vanadium element in primary aluminum liquid comprises the following steps: mixing and smelting the Al-B intermediate alloy and the aluminum liquid to be purified, solidifying and purifying the aluminum liquid after mixing and smelting, then slagging off, and removing vanadium elements in the primary aluminum liquid after standing. A method for removing vanadium element in primary aluminum liquid comprises the following steps: heating the aluminum liquid to be purified to 700-760 ℃ under the atmosphere of inert gas or nitrogen, and then spraying a vanadium removal refining agent KBF into the aluminum liquid by using a powder spraying tank 4 And preserving the heat for 15-25 minutes, then carrying out slag skimming treatment, and standing for 30-40 minutes to remove vanadium elements in the primary aluminum liquid. The invention has the following beneficial effects: 1. the cost is low; 2. the vanadium removing effect is obvious; 3. the operation is simple; 4. has no toxic and side effects on the original aluminum and the environment; 5. the economic benefit is considerable.
Description
Technical Field
The invention relates to a metal and a method for removing vanadium element in primary aluminum molten aluminum.
Background
Electrolytic aluminum is aluminum obtained by electrolysis. The modern electrolytic aluminum industry adopts cryolite-alumina molten salt electrolytic method. The molten cryolite is solvent, alumina is solute, carbosome is anode, aluminium liquid is cathode, strong direct current is introduced, electrochemical reaction is carried out on two poles in the electrolytic cell at 950-970 ℃, namely electrolysis.
Along with the development of the aluminum industry in China, the capacity of electrolytic aluminum cannot be expanded, the current capacity of electrolytic aluminum is seriously excessive, so that the price of an aluminum product greatly declines, each electrolytic aluminum enterprise and processing enterprise face a crisis in existence, the quality of domestic raw materials also greatly declines, high-grade bauxite ore is deficient, the quantity of aluminum oxide is reduced, various trace elements are entrained in the aluminum oxide and enter the raw aluminum liquid along with the production of the electrolytic aluminum, great influence is brought to the subsequent aluminum processing quality, quality accidents of downstream products occasionally happen, and great economic loss and reputation loss are brought to the enterprises.
The vanadium element of the electrolytic aluminum is mainly from aluminum oxide, and is V 2 O 5 The form exists, and vanadium element generated during aluminum electrolysis enters aluminum liquid. When the vanadium content in the electrolytic aluminum is less than 50ppm, the subsequent production is not greatly influenced, however, the content of vanadium in the electrolytic raw aluminum reaches 90-140 ppm because the content difference of trace elements of bauxite ores in various regions is large and the vanadium content of bauxite ores in partial regions is high. When vanadium element in the aluminum melt is in solid solution, the vanadium element can easily absorb free electrons in the material to fill an incomplete electron layer, the number of the transferred electrons is reduced, and the reduction of the conductivity is caused, so that the increase of the vanadium content causes the reduction of the conductivity of an aluminum product, and the vanadium element has serious influence on products for electrical use. For 3000 series alloy, the content of vanadium is increased,the manganese element is promoted to be separated out, the solid solubility of the manganese element in a matrix is reduced, the recrystallization temperature of 3000 series alloy is reduced, the material starts to be recrystallized at the reduced temperature, the strength is obviously reduced, the elongation is obviously reduced, and the material has cracking risk in the stamping process. Therefore, the removal of vanadium in the original aluminum has far-reaching significance for fusion casting production.
Disclosure of Invention
The technical problem is as follows: in order to overcome the defects of the prior art, the invention discloses a metal and a method for removing vanadium element in primary aluminum molten aluminum, which can remove the vanadium element in the primary aluminum molten aluminum in a targeted manner, improve the quality of aluminum products and reduce the production and operation cost. The method has the advantages of simple use process, low investment, high clearing effect, no toxic or side effect, no great harm to the environment and capability of well meeting the requirements of downstream aluminum deep-processing products on the quality of the original aluminum.
The technical scheme is as follows: a metal for removing vanadium element in primary aluminum liquid, which is Al-B intermediate alloy.
A method for removing vanadium element in primary aluminum liquid comprises the following steps:
and mixing and smelting the Al-B intermediate alloy and the aluminum liquid to be purified, solidifying and purifying the aluminum liquid after mixing and smelting, then slagging off, and removing vanadium elements in the primary aluminum liquid after standing.
Further, the mass ratio of the Al-B intermediate alloy to the aluminum liquid to be purified is (1.5-2): 1000.
Further, the mixed smelting is carried out in an inert gas or nitrogen atmosphere, the smelting temperature is controlled to be 700-760 ℃, the temperature is kept for 15-25 minutes after the temperature is reached, then slagging-off treatment is carried out, and then standing is carried out for 30-40 minutes, so that vanadium elements in the primary aluminum liquid are removed.
A method for removing vanadium element in primary aluminum liquid comprises the following steps:
heating the aluminum liquid to be purified to 700-760 ℃ under the atmosphere of inert gas or nitrogen, and then spraying a vanadium removal refining agent KBF into the aluminum liquid by using a powder spraying tank 4 Keeping the temperature for 15-25 minutesAnd then carrying out slag skimming treatment, and standing for 30-40 minutes to remove vanadium elements in the primary aluminum liquid.
Further, vanadium-removing refining agent KBF 4 The mass ratio of the aluminum liquid to be purified to the aluminum liquid to be purified is (1.5-2): 1000.
Has the advantages that: the metal and the method for removing the vanadium element in the primary aluminum liquid disclosed by the invention have the following beneficial effects:
1. the cost is low, and the implementation cost of each ton of aluminum is only 20-25 yuan;
2. the vanadium removal effect is obvious, and the vanadium content in the original aluminum can be rapidly reduced from more than 90ppm to less than 10 ppm;
3. the operation is simple, and the operation can be completed only by using the original powder spraying refining equipment without adding any equipment;
4. the refining agent reacts with the molten aluminum to form a high-melting-point compound which is not melted in the molten aluminum and can be quickly deposited into furnace bottom slag, and the pollution to the primary aluminum is avoided. On the basis of the traditional production of aluminum ingots or aluminum processing products, aiming at the requirements of aluminum fine and further processing on the product quality, harmful vanadium elements in the primary aluminum liquid are removed in a targeted manner, and the quality requirements of different downstream products are met;
5. compared with the cost of raw aluminum of the high-purity aluminum production process, the cost of each ton of raw aluminum is reduced by 300-700 yuan, and the economic benefit is considerable.
The specific implementation mode is as follows:
the following describes in detail specific embodiments of the present invention.
The aluminum ingot to be treated was dissolved and divided equally into seven parts by mass for the following examples 1 to 6 and comparative examples.
Example 1
A method for removing vanadium element in primary aluminum liquid comprises the following steps:
dissolving primary aluminum to be purified in an inert atmosphere to obtain aluminum liquid, then mixing and smelting Al-B intermediate alloy and the aluminum liquid to be purified, controlling the smelting temperature at 740 ℃, keeping the temperature for 20 minutes after reaching the temperature, then carrying out slagging-off treatment, and standing for 35 minutes to remove vanadium elements in the primary aluminum liquid.
Further, the mass ratio of the Al-B intermediate alloy to the aluminum liquid to be purified is 1.6: 1000.
Example 2
A method for removing vanadium element in primary aluminum liquid comprises the following steps:
under nitrogen, dissolving primary aluminum to be purified to obtain aluminum liquid, then mixing and smelting Al-B intermediate alloy and the aluminum liquid to be purified, controlling the smelting temperature at 700 ℃, keeping the temperature for 25 minutes after reaching the temperature, then carrying out slag skimming treatment, and standing for 40 minutes to remove vanadium elements in the primary aluminum liquid.
Further, the mass ratio of the Al-B intermediate alloy to the aluminum liquid to be purified is 1.5: 1000.
Example 3
A method for removing vanadium element in primary aluminum liquid comprises the following steps:
dissolving primary aluminum to be purified in an inert atmosphere to obtain aluminum liquid, then mixing and smelting Al-B intermediate alloy and the aluminum liquid to be purified, controlling the smelting temperature at 760 ℃, keeping the temperature for 15 minutes after reaching the temperature, then carrying out slag skimming treatment, and standing for 30 minutes to remove vanadium elements in the primary aluminum liquid.
Further, the mass ratio of the Al-B intermediate alloy to the aluminum liquid to be purified is 2: 1000.
Example 4
A method for removing vanadium element in primary aluminum liquid comprises the following steps:
dissolving primary aluminum to be purified in an inert gas atmosphere to obtain aluminum liquid, heating the aluminum liquid to be purified to 740 ℃, and spraying a vanadium removal refining agent KBF into the aluminum liquid by using a powder spraying tank 4 And preserving the heat for 20 minutes, then carrying out slag skimming treatment, and standing for 35 minutes to remove vanadium elements in the primary aluminum liquid.
Further, vanadium-removing refining agent KBF 4 The mass ratio of the aluminum liquid to be purified to the aluminum liquid to be purified is 1.6: 1000.
Example 5
A method for removing vanadium element in primary aluminum liquid comprises the following steps:
dissolving primary aluminum to be purified in nitrogen atmosphere to obtain aluminum liquid, heating the aluminum liquid to be purified to 700 ℃, and spraying a vanadium removal refining agent KBF into the aluminum liquid by using a powder spraying tank 4 And preserving the heat for 25 minutes, then carrying out slag skimming treatment, and standing for 40 minutes to remove vanadium elements in the primary aluminum liquid.
Further, vanadium-removing refining agent KBF 4 The mass ratio of the aluminum liquid to be purified to the aluminum liquid to be purified is 1.5: 1000.
Example 6
A method for removing vanadium element in primary aluminum liquid comprises the following steps:
dissolving primary aluminum to be purified in an inert gas atmosphere to obtain aluminum liquid, heating the aluminum liquid to be purified to 760 ℃, and spraying a vanadium removal refining agent KBF into the aluminum liquid by using a powder spraying tank 4 And preserving the heat for 15 minutes, then carrying out slag skimming treatment, and standing for 30 minutes to remove vanadium elements in the primary aluminum liquid.
Further, vanadium-removing refining agent KBF 4 The mass ratio of the purified aluminum liquid to the aluminum liquid to be purified is 2: 1000.
Comparative example
Dissolving the primary aluminum to be purified in an inert gas atmosphere to obtain aluminum liquid, then heating the aluminum liquid to be purified to 740 ℃, preserving the temperature for 20 minutes, then carrying out slagging-off treatment, and standing for 35 minutes to finish the comparison example.
The vanadium content in the treated aluminum liquid in the comparative example, the example 1 and the example 4 is respectively tested, and the specific test results are shown in the following table:
| vanadium content (ppm) | |
| Comparative example | 90 |
| Example 1 | 10 |
| Example 4 | 9 |
The embodiments of the present invention have been described in detail. However, the present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (6)
1. A metal for removing vanadium element in primary aluminum liquid is characterized in that the metal is Al-B intermediate alloy.
2. A method for removing vanadium element in primary aluminum liquid is characterized by comprising the following steps:
mixing and smelting the Al-B intermediate alloy of claim 1 and aluminum liquid to be purified, solidifying and purifying the aluminum liquid after mixing and smelting, then slagging-off, and removing vanadium element in the primary aluminum liquid after standing.
3. The method for removing vanadium element in primary aluminum liquid as claimed in claim 2, wherein the mass ratio of the Al-B intermediate alloy to the aluminum liquid to be purified is (1.5-2): 1000.
4. The method for removing vanadium element in primary aluminum molten aluminum according to claim 2, wherein the mixed smelting is actually carried out under inert gas or nitrogen atmosphere, the smelting temperature is controlled to be 700-760 ℃, the temperature is kept for 15-25 minutes after reaching the temperature, then the slag removing treatment is carried out, and the vanadium element in the primary aluminum molten aluminum is removed after the standing is carried out for 30-40 minutes.
5. A method for removing vanadium element in primary aluminum liquid is characterized by comprising the following steps:
heating the aluminum liquid to be purified to 700-760 ℃ under the atmosphere of inert gas or nitrogen, and then spraying a vanadium removal refining agent KBF into the aluminum liquid by using a powder spraying tank 4 And preserving the heat for 15-25 minutes, then carrying out slag skimming treatment, and standing for 30-40 minutes to remove vanadium elements in the primary aluminum liquid.
6. The method for removing vanadium element in primary aluminum liquid as claimed in claim 5, wherein the vanadium removal refining agent KBF 4 The mass ratio of the aluminum liquid to be purified to the aluminum liquid to be purified is (1.5-2): 1000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210383261.0A CN114807621A (en) | 2022-04-13 | 2022-04-13 | Metal and method for removing vanadium element in primary aluminum molten aluminum |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210383261.0A CN114807621A (en) | 2022-04-13 | 2022-04-13 | Metal and method for removing vanadium element in primary aluminum molten aluminum |
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| CN114807621A true CN114807621A (en) | 2022-07-29 |
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| CN202210383261.0A Pending CN114807621A (en) | 2022-04-13 | 2022-04-13 | Metal and method for removing vanadium element in primary aluminum molten aluminum |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4507150A (en) * | 1982-11-16 | 1985-03-26 | Alcan International Limited | Removal of impurities from molten aluminium |
| CN107254608A (en) * | 2015-05-13 | 2017-10-17 | 江苏亨通电力特种导线有限公司 | High-strength high temperature-resistant alloy wire |
| CN109468478A (en) * | 2018-12-18 | 2019-03-15 | 云南云铝涌鑫铝业有限公司 | A kind of preparation method of aluminium ingot |
| CN112646988A (en) * | 2020-12-07 | 2021-04-13 | 中铝材料应用研究院有限公司 | Preparation method of high-conductivity heat-resistant aluminum alloy rod |
| CN113215452A (en) * | 2021-04-01 | 2021-08-06 | 河北新立中有色金属集团有限公司 | Al-Si-Fe alloy material and preparation method thereof |
-
2022
- 2022-04-13 CN CN202210383261.0A patent/CN114807621A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4507150A (en) * | 1982-11-16 | 1985-03-26 | Alcan International Limited | Removal of impurities from molten aluminium |
| CN107254608A (en) * | 2015-05-13 | 2017-10-17 | 江苏亨通电力特种导线有限公司 | High-strength high temperature-resistant alloy wire |
| CN109468478A (en) * | 2018-12-18 | 2019-03-15 | 云南云铝涌鑫铝业有限公司 | A kind of preparation method of aluminium ingot |
| CN112646988A (en) * | 2020-12-07 | 2021-04-13 | 中铝材料应用研究院有限公司 | Preparation method of high-conductivity heat-resistant aluminum alloy rod |
| CN113215452A (en) * | 2021-04-01 | 2021-08-06 | 河北新立中有色金属集团有限公司 | Al-Si-Fe alloy material and preparation method thereof |
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Application publication date: 20220729 |
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