CN111057859A - Composite refining device for aluminum alloy melt - Google Patents
Composite refining device for aluminum alloy melt Download PDFInfo
- Publication number
- CN111057859A CN111057859A CN201911363592.2A CN201911363592A CN111057859A CN 111057859 A CN111057859 A CN 111057859A CN 201911363592 A CN201911363592 A CN 201911363592A CN 111057859 A CN111057859 A CN 111057859A
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- aluminum alloy
- alloy melt
- refining
- melt
- pipe
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 59
- 238000007670 refining Methods 0.000 title claims abstract description 40
- 239000002131 composite material Substances 0.000 title claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 239000011261 inert gas Substances 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 4
- 229910002651 NO3 Inorganic materials 0.000 claims description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000003245 coal Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 description 15
- 239000007789 gas Substances 0.000 description 15
- 239000012535 impurity Substances 0.000 description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 13
- 238000007872 degassing Methods 0.000 description 10
- 239000001257 hydrogen Substances 0.000 description 10
- 229910052739 hydrogen Inorganic materials 0.000 description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 9
- 239000007787 solid Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
-
- 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
-
- 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
- C22B21/064—Obtaining aluminium refining using inert or reactive gases
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- 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
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a composite refining device of an aluminum alloy melt, wherein a double-way pipe (1) is inserted into an aluminum alloy melt (2); the double-way pipe (1) comprises an outer pipe and an inner pipe, inert gas is introduced into the aluminum alloy melt (2) through the outer pipe to generate bubbles (5), and a refining agent (4) is introduced into the aluminum alloy melt (2) through the inner pipe; the aluminum alloy melt (2) is also provided with a stirring device (3) and an electrode (6). The method can realize triple effects of aluminum alloy melt refining, effectively improve the refining efficiency, improve the purity of the aluminum alloy melt, obviously improve the rejection rate of aluminum alloy products and be beneficial to reducing the production cost.
Description
Technical Field
The invention belongs to the field of aluminum alloy, and particularly relates to a composite refining device for an aluminum alloy melt.
Background
Aluminum alloys have excellent physical properties, good formability, and high recyclability, and are therefore widely used in the field of automobile parts production. With the development of light weight of automobiles, aluminum alloy materials, particularly high-purity aluminum and aluminum alloy products, are increasingly in demand. The existence of inclusions and hydrogen is the main cause of defects of the aluminum alloy, and the removal of the inclusions (mainly alumina) and the hydrogen is the key for ensuring the metallurgical quality of the aluminum melt. Refining is the most effective means for removing gas and inclusions in the aluminum melt. At present, the refining process applied to the aluminum alloy melt is more, such as an adsorption method, a non-adsorption method, a filtration method and the like. In actual production, a certain refining mode is often used, such as argon gas rotary blowing, the effects of removing inclusions and impurity gases are poor, and many inclusions and defects cannot be eliminated in subsequent processing and heat treatment, so that the comprehensive performance of an aluminum processing product cannot meet the requirements, the rejection rate is increased, and the waste of production cost is caused. Therefore, a new refining mode capable of removing both impurity and hydrogen is required to be developed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a composite refining device for aluminum alloy melt, which can realize triple effects of aluminum alloy melt refining, effectively improve refining efficiency, improve purity of the aluminum alloy melt, obviously improve rejection rate of aluminum alloy products and be beneficial to reducing production cost.
The invention provides a composite refining device of an aluminum alloy melt, wherein a double-way pipe is inserted into the aluminum alloy melt; the double-pass pipe comprises an outer pipe and an inner pipe, inert gas is introduced into the aluminum alloy melt through the outer pipe to generate bubbles, and nonmetallic inclusions are taken out in the rising process of the bubbles, so that the aims of degassing and removing impurities are fulfilled; the refining agent is introduced into the aluminum alloy melt through the inner tube and is used for adsorbing and dissolving oxide inclusions in the aluminum alloy melt and adsorbing hydrogen on the aluminum alloy melt, the refining agent floats to the liquid level and enters the molten slag, and the purposes of removing impurities and exhausting gas are achieved; the aluminum alloy melt is also provided with a stirring device and an electrode.
The refining agent consists of the following components: 60-80 parts of coal powder, 10-20 parts of nitrate and 1-5 parts of titanium by mass. The adsorption, dissolution of oxides inclusions in the melt by the refining agent and the separation of the inclusions from the melt by the refining agent through physical or chemical action.
The stirring device is a graphite rotor. The vortex generated by the graphite rotor enables bubbles, the refining agent and the aluminum melt to be uniformly mixed and fully contacted, so that the contact area is greatly increased, and the impurity removal and degassing effects are improved.
The electrodes are respectively connected with the positive pole and the negative pole of the direct current power supply. A large amount of Al is distributed in the impurities and gas in the molten aluminum3+、H+Cationic Al after electrode energization3+、H+Can quickly approach to the cathode, thereby further achieving the effects of removing impurities and degassing and simultaneously improving the refining efficiency.
The invention respectively conveys inert gas and solid refining agent through two pipelines, which can not only prevent solid blockage, but also ensure that the reaction of gas and solid and aluminum melt achieves the first and second effects of degassing and deslagging; meanwhile, an electrode is inserted into the aluminum melt, and after the electrode is connected with a power supply and is electrified, oxide inclusions and hydrogen in an electric field can be quickly close to a cathode, so that the third triple effect of degassing and deslagging is achieved, the purification quality of the aluminum melt is effectively improved, the rejection rate of aluminum products during production is reduced, and the cost is further saved.
Advantageous effects
(1) The invention adopts the double-way pipe to separate the gas and solid conveying pipelines, improves the traditional supply mode, and effectively reduces the blockage problem when the gas and the solid are conveyed in the same pipeline.
(2) The refining agent of the invention adopts coal powder and nitrate, and simultaneously contains a certain amount of trace element titanium, thereby not only playing a role of metamorphism, but also improving the comprehensive mechanical properties of the aluminum alloy (the tensile strength reaches more than 380MPa, and the elongation reaches about 8%).
(3) According to the invention, an external power supply is connected into the aluminum alloy melt by inserting the electrode, and impurities and hydrogen in the aluminum melt can be quickly adsorbed onto the negatively charged electrode, so that the effects of deslagging and degassing are further achieved, and meanwhile, the refining time can be shortened.
(4) The invention can realize the triple effects of aluminum alloy melt refining, effectively improves the refining effect: the purity of the aluminum alloy melt is improved (the density of the aluminum alloy liquid is improved to 2.67 g/cm)3Above, the density of the prior art is generally 2.63-2.65g/cm3Within the range), the rejection rate of the aluminum alloy products is obviously reduced (the qualification rate reaches more than 98 percent), and the production cost is favorably reduced.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Example 1
As shown in fig. 1, the present embodiment provides a composite refining apparatus for aluminum alloy melt, wherein a double-pipe 1 is inserted into an aluminum alloy melt 2; the double-way pipe 1 comprises an outer pipe and an inner pipe, inert gas is introduced into the aluminum alloy melt 2 through the outer pipe to generate bubbles 5, and nonmetallic inclusions are taken out in the rising process of the bubbles 5, so that the aims of degassing and removing impurities are fulfilled; the refining agent 4 is introduced into the aluminum alloy melt 2 through the inner tube and is used for adsorbing and dissolving oxide inclusions in the aluminum alloy melt 2 and adsorbing hydrogen on the oxide inclusions, and the refining agent floats to the liquid level to enter molten slag, so that the purposes of removing impurities and exhausting gas are achieved; the aluminum alloy melt 2 is also provided with a graphite rotor 3 and an electrode 6.
The implementation of the embodiment is as follows:
first, a molten aluminum alloy melt 2 is stored in a transfer furnace from a melting furnace and stirred by a graphite rotor 3. Argon gas stored in the gas bomb is introduced into the aluminum alloy melt 2 through a gas pipeline (namely appearance) in the double-way pipe 1 to generate fine bubbles 5, the size of the bubbles can be adjusted by controlling the size of gas flow, and nonmetal impurities (mainly aluminum oxide) and hydrogen impurities are brought out in the rising process of the bubbles 5. Meanwhile, the bubbles 5 are broken into bubbles with smaller size by turbulent shear stress generated by the rotation and stirring of the graphite rotor 3, the contact area between the smaller size of the bubbles and the aluminum melt is larger, the probability of hydrogen diffusing into the bubbles is increased, and the purposes of degassing and impurity removal are achieved.
The refining agent 4 is stored in the powder feeding equipment, the inner pipe of the double-way pipe 1 is a solid conveying pipeline, and the refining agent 4 is introduced into the aluminum alloy melt 2 through the solid pipeline. The refining agent 4 and the aluminum alloy melt 2 are subjected to a series of reactions to adsorb and dissolve oxide inclusions in the aluminum alloy melt 2 and hydrogen adsorbed thereon, and the oxide inclusions float to the liquid level and enter molten slag, so that the purposes of removing impurities and exhausting gas are achieved. The graphite rotor 3 is driven by the motor to continuously rotate at a high speed to stir the aluminum alloy melt 2, and the aluminum alloy melt generates strong turbulence to play a role in stirring the aluminum alloy melt. The generated vortex enables the bubbles 5, the refining agent 4 and the aluminum alloy melt 2 to be uniformly mixed and fully contacted, greatly increases the contact area and creates favorable conditions for efficiently deslagging and degassing.
Meanwhile, two electrodes 6 are inserted into the aluminum alloy melt, and the electrodes 6 are respectively connected with the positive pole and the negative pole of a direct current power supply. A large amount of Al is distributed in the impurities and gas in the molten aluminum3+、H+After the electrode 6 is electrified by the connected power supply, positive ions Al3+、H+Can be quickly close to the cathode electrode, thereby further achieving the effects of deslagging and degassing, and simultaneously shortening the refining time and improving the refining efficiency. Slag on the surface of the aluminum melt is removed through the slag removing spoon, and finally electric-gas-solid composite refining of the aluminum alloy melt is realized, so that the purity of the aluminum alloy melt 2 is further improved, and the production quality of aluminum products is improved. The obtained aluminum alloy is tested according to GB/T3880.2-2012, the tensile strength reaches over 380MPa, and the elongation reaches about 8%. The density of the aluminum alloy liquid is increased to 2.67g/cm3Above, the qualification rate reaches more than 98%.
Claims (4)
1. A composite refining device of an aluminum alloy melt is characterized in that: inserting a double-way pipe (1) into the aluminum alloy melt (2); the double-way pipe (1) comprises an outer pipe and an inner pipe, inert gas is introduced into the aluminum alloy melt (2) through the outer pipe to generate bubbles (5), and a refining agent (4) is introduced into the aluminum alloy melt (2) through the inner pipe; the aluminum alloy melt (2) is also provided with a stirring device (3) and an electrode (6).
2. The apparatus of claim 1, wherein: the refining agent (4) consists of the following components: 60-80 parts of coal powder, 10-20 parts of nitrate and 1-5 parts of titanium by mass.
3. The apparatus of claim 1, wherein: the stirring device (3) is a graphite rotor.
4. The apparatus of claim 1, wherein: the electrodes (6) are respectively connected with the positive pole and the negative pole of the direct-current power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911363592.2A CN111057859A (en) | 2019-12-26 | 2019-12-26 | Composite refining device for aluminum alloy melt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911363592.2A CN111057859A (en) | 2019-12-26 | 2019-12-26 | Composite refining device for aluminum alloy melt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111057859A true CN111057859A (en) | 2020-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911363592.2A Pending CN111057859A (en) | 2019-12-26 | 2019-12-26 | Composite refining device for aluminum alloy melt |
Country Status (1)
| Country | Link |
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| CN (1) | CN111057859A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112779435A (en) * | 2020-12-27 | 2021-05-11 | 上海交通大学安徽(淮北)陶铝新材料研究院 | Method for controlling in-situ authigenic aluminum-based composite material through melt with electromagnetic stirring |
| CN117587239A (en) * | 2024-01-19 | 2024-02-23 | 北京航空航天大学 | A method for purifying alloy melt by co-blowing refining agent and refining gas |
| JP2025115017A (en) * | 2024-01-25 | 2025-08-06 | カナエハイテック合同会社 | Aluminum alloy molten metal treatment equipment |
| JP2025115016A (en) * | 2024-01-25 | 2025-08-06 | カナエハイテック合同会社 | Aluminum alloy molten metal treatment equipment |
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2019
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112779435A (en) * | 2020-12-27 | 2021-05-11 | 上海交通大学安徽(淮北)陶铝新材料研究院 | Method for controlling in-situ authigenic aluminum-based composite material through melt with electromagnetic stirring |
| CN112779435B (en) * | 2020-12-27 | 2021-12-14 | 上海交通大学安徽(淮北)陶铝新材料研究院 | Method for controlling in-situ authigenic aluminum-based composite material through melt with electromagnetic stirring |
| CN117587239A (en) * | 2024-01-19 | 2024-02-23 | 北京航空航天大学 | A method for purifying alloy melt by co-blowing refining agent and refining gas |
| CN117587239B (en) * | 2024-01-19 | 2024-04-19 | 北京航空航天大学 | Alloy melt purification method by co-blowing refining agent and refining gas |
| JP2025115017A (en) * | 2024-01-25 | 2025-08-06 | カナエハイテック合同会社 | Aluminum alloy molten metal treatment equipment |
| JP2025115016A (en) * | 2024-01-25 | 2025-08-06 | カナエハイテック合同会社 | Aluminum alloy molten metal treatment equipment |
| JP7784157B2 (en) | 2024-01-25 | 2025-12-11 | カナエハイテック合同会社 | Aluminum alloy molten metal treatment equipment |
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Application publication date: 20200424 |