CN114032404A - Method for refining aluminum-titanium foil - Google Patents
Method for refining aluminum-titanium foil Download PDFInfo
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- CN114032404A CN114032404A CN202111336925.XA CN202111336925A CN114032404A CN 114032404 A CN114032404 A CN 114032404A CN 202111336925 A CN202111336925 A CN 202111336925A CN 114032404 A CN114032404 A CN 114032404A
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- 238000007670 refining Methods 0.000 title claims abstract description 39
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000011888 foil Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 34
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 82
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 82
- 239000007788 liquid Substances 0.000 claims abstract description 62
- 238000003723 Smelting Methods 0.000 claims abstract description 33
- 238000010408 sweeping Methods 0.000 claims abstract description 25
- 238000002844 melting Methods 0.000 claims description 30
- 230000008018 melting Effects 0.000 claims description 30
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 24
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 14
- 239000001257 hydrogen Substances 0.000 claims description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- 229910052786 argon Inorganic materials 0.000 claims description 12
- 238000007872 degassing Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 4
- 239000002893 slag Substances 0.000 abstract description 28
- 238000004321 preservation Methods 0.000 abstract description 17
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000013459 approach Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- 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
- C22B21/066—Treatment of circulating aluminium, e.g. by filtration
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The application relates to the field of aluminum-titanium foil production, and particularly provides a refining method of aluminum-titanium foil. And carrying out primary slagging-off on the aluminum liquid through alternate circulation of edge sweeping operation and N-shaped operation. And guiding the aluminum liquid subjected to primary slagging-off into a heat-preserving furnace, and carrying out secondary slagging-off on the aluminum liquid in the heat-preserving furnace through alternate circulation of N-shaped operation and Z-shaped operation. In the refining method of the aluminum-titanium foil, the molten aluminum in the smelting furnace is subjected to slagging-off through edge sweeping operation and N-shaped operation alternate circulation, and the molten aluminum in the heat preservation furnace is subjected to slagging-off through N-shaped operation and Z-shaped operation alternate circulation. The slag removal device can effectively remove slag on the corners of the hearth of the smelting furnace and the hearth of the heat preservation furnace, reduces slag residue in molten aluminum, and is favorable for improving the quality of the molten aluminum.
Description
Technical Field
The application relates to the field of aluminum-titanium foil production, in particular to a refining method of aluminum-titanium foil.
Background
The aluminum-titanium foil needs to be refined in the production process to remove impurities and add required substances, such as titanium, iron, silicon and the like. Therefore, the aluminum liquid needs to be subjected to slagging-off in the refining process to remove impurities.
At present, the slag skimming process is disordered, the slag skimming is usually carried out only according to the observation of the slag position by workers, and part of undiscovered slag is remained in the aluminum liquid, so that the quality of the aluminum liquid is influenced.
Disclosure of Invention
In view of the above, there is a need to provide a method for refining an aluminum-titanium foil, which includes forming aluminum liquid in a hearth of a smelting furnace. And carrying out primary slagging-off on the aluminum liquid through alternate circulation of edge sweeping operation and N-shaped operation. And guiding the aluminum liquid subjected to primary slagging-off into a heat-preserving furnace, and carrying out secondary slagging-off on the aluminum liquid in the heat-preserving furnace through alternate circulation of N-shaped operation and Z-shaped operation.
In the refining method of the aluminum-titanium foil in the embodiment, the molten aluminum in the smelting furnace is subjected to slagging-off through edge sweeping operation and N-shaped operation alternately in a circulating manner, and the molten aluminum in the heat preservation furnace is subjected to slagging-off through N-shaped operation and Z-shaped operation alternately in a circulating manner. The slag removal device can effectively remove slag on the corners of the hearth of the smelting furnace and the hearth of the heat preservation furnace, reduces slag residue in molten aluminum, and is favorable for improving the quality of the molten aluminum.
In at least one embodiment, the aluminum liquid is introduced into a degassing box and argon is introduced to degas the aluminum liquid, the hydrogen content of the degassed aluminum liquid is less than or equal to 0.08ml/100g, and the fluctuation range of the hydrogen content of the aluminum liquid in different time periods is less than or equal to 0.03ml/100 g.
In the refining method of the aluminum-titanium foil in the embodiment, argon is introduced into the aluminum liquid in the degassing tank to dehydrogenate the aluminum liquid, and the hydrogen content in the aluminum liquid is kept at a low state.
In at least one embodiment, the time for the aluminum liquid in the smelting furnace to carry out the single edge sweeping operation is more than or equal to 50s and less than or equal to 70 s; the time of the single N-shaped operation is more than or equal to 4min and less than or equal to 6 min.
In the method for refining the aluminum-titanium foil in the embodiment, the edge sweeping operation is mainly used for skimming the edge of the hearth of the smelting furnace, the moving distance is short compared with the N-shaped operation, and the consumed time is relatively short. The N-shaped operation needs to carry out slag skimming on the whole hearth of the smelting furnace, the time is controlled to be four to six minutes, and enough time is provided for carrying out slag skimming on the whole hearth of the smelting furnace.
In at least one embodiment, the circulation times of the edge sweeping operation and the N-shaped operation of the aluminum liquid in the smelting furnace are more than or equal to 3 times and less than or equal to 5 times, and the service time is more than or equal to 18min and less than or equal to 22 min.
In the method for refining the aluminum-titanium foil according to the embodiment, the edge sweeping operation and the N-shaped operation are alternately performed, the cycle number is greater than or equal to 3 and less than or equal to 5, and slag can be effectively removed.
In at least one embodiment, after the aluminum liquid is smelted by the holding furnace, the hydrogen content of the aluminum liquid is less than or equal to 0.13ml/100 g.
In the method for refining an aluminum-titanium foil according to the embodiment, the hydrogen content of the molten aluminum can be reduced by refining in the melting furnace and the holding furnace.
In at least one embodiment, the time for the aluminum liquid in the holding furnace to perform the single N-shaped operation or Z-shaped operation is greater than or equal to 2min and less than or equal to 3 min.
In the method for refining an aluminum-titanium foil according to the embodiment, the size of the holding furnace is smaller than that of the melting furnace, and the time for a single N-shaped operation or Z-shaped operation is shorter.
In at least one embodiment, the circulation times of the Z-shaped operation and the N-shaped operation of the aluminum liquid in the heat preservation furnace are more than or equal to 5 times and less than or equal to 7 times, and the service time is more than or equal to 28min and less than or equal to 32 min.
In the method for refining an aluminum-titanium foil according to the embodiment, the number of cycles of the Z-shape operation and the N-shape operation is not less than 5 and not more than 7, and slag in the hearth of the holding furnace can be effectively removed.
In at least one embodiment, the temperature in the smelting furnace is greater than or equal to 740 ℃ and less than or equal to 750 ℃, the temperature in the holding furnace is greater than or equal to 730 ℃ and less than or equal to 740 ℃, and the temperature in the degassing tank is greater than or equal to 720 ℃ and less than or equal to 730 ℃.
In the method for refining an aluminum-titanium foil according to the embodiment, the temperature in the smelting furnace is greater than or equal to 740 ℃ and less than or equal to 750 ℃, so that the raw aluminum can be completely melted to form an aluminum liquid, and the molten state can be continuously maintained in the heat preservation furnace at a temperature of greater than or equal to 730 ℃ and less than or equal to 740 ℃.
In at least one embodiment, the pressure of the argon gas is greater than or equal to 0.10MPa and less than or equal to 0.20MPa, and the flow rate of the argon gas is greater than or equal to 18L/min and less than or equal to 22L/min.
In at least one embodiment, the rotational speed of the rotor of the deaerator tank is greater than or equal to 430r/min and less than or equal to 470 r/min.
According to the refining method of the aluminum-titanium foil, the molten aluminum in the smelting furnace is subjected to slagging-off through edge sweeping operation and N-shaped operation alternate circulation, and then the molten aluminum in the heat preservation furnace is subjected to slagging-off through N-shaped operation and Z-shaped operation alternate circulation. Can effectively remove slag from the aluminum liquid and improve the quality of the aluminum liquid.
Drawings
Fig. 1 is a flowchart of a method for refining an aluminum-titanium foil according to an embodiment of the present application.
Fig. 2 is a schematic view of the operation of sweeping the edge in the melting furnace according to the embodiment of the present application.
Fig. 3 is a schematic view of an N-shape operation in a smelting furnace according to an embodiment of the present application.
Fig. 4 is a schematic view of the zigzag operation in the heat insulating furnace according to the embodiment of the present application.
FIG. 5 is a schematic view of a zigzag operation in an insulated furnace according to another embodiment of the present application.
Fig. 6 is a schematic view of an N-shaped operation in the heat insulating furnace according to an embodiment of the present application.
Description of the main elements
First melting edge 11
Second melting edge 12
Third melting edge 13
Smelting furnace door 15
Holding furnace 200
First insulating edge 21
Second insulating edge 22
Third insulating edge 23
Fourth insulating edge 24
Fifth insulating edge 25
Thermal insulation furnace door 26
Edge sweeping operation 40
N-job 50
First N-shaped motion 51
Second N-shaped motion 52
Third N-shaped motion 53
Z-form operation 60
First Z-shaped movement 61
Second Z-shaped motion 62
Third Z-shaped motion 63
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "rear," and the like as used herein are for illustrative purposes only.
When two elements (planes, lines) are arranged in parallel, it is to be understood that the relationship between the two elements includes both parallel and substantially parallel. By substantially parallel is understood that there may be an included angle between two elements, the included angle being greater than 0 ° and less than or equal to 10 °.
When two elements (planes, lines) are arranged vertically, it is understood that the relationship between the two elements includes both vertical and substantially vertical. Wherein substantially perpendicular is understood to mean that the angle between two elements is greater than or equal to 80 ° and less than 90 °.
When a parameter is greater than, equal to, or less than an endpoint value, it is understood that the endpoint value allows a tolerance of ± 10%, e.g., a is greater than 10, and is understood to include cases where a is greater than 9, as well as cases where a is greater than 11.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Some embodiments of the present application provide a method for refining an aluminum-titanium foil, which includes forming aluminum liquid in a hearth of a melting furnace. And carrying out primary slagging-off on the aluminum liquid through alternate circulation of edge sweeping operation and N-shaped operation. And guiding the aluminum liquid subjected to primary slagging-off into a heat-preserving furnace, and carrying out secondary slagging-off on the aluminum liquid in the heat-preserving furnace through alternate circulation of N-shaped operation and Z-shaped operation. In the refining method of the aluminum-titanium foil in the embodiment, the molten aluminum in the smelting furnace is subjected to slagging-off through edge sweeping operation and N-shaped operation alternately in a circulating manner, and the molten aluminum in the heat preservation furnace is subjected to slagging-off through N-shaped operation and Z-shaped operation alternately in a circulating manner. The slag removal device can effectively remove slag on the corners of the hearth of the smelting furnace and the hearth of the heat preservation furnace, reduces slag residue in molten aluminum, and is favorable for improving the quality of the molten aluminum.
Some embodiments of the present application will be described below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Referring to fig. 1, in an embodiment, a method for refining an aluminum-titanium foil is provided, where the aluminum-titanium foil is a product with titanium metal added to an aluminum alloy, and the method includes the following steps:
s101, putting the raw aluminum into a hearth of a smelting furnace 100 for refining, heating the hearth of the smelting furnace 100, and melting the raw aluminum to form aluminum liquid.
In S101, the hearth temperature of the heated melting furnace 100 is 740 ℃ or higher and 750 ℃ or lower.
S102, carrying out primary slagging-off on the aluminum liquid through alternate circulation of edge sweeping operation 40 and N-shaped operation 50.
Referring to fig. 2 and 3, in S102, the number of cycles of the edge sweeping operation 40 and the N-shaped operation 50 is greater than or equal to 3 and less than or equal to 5, the time of a single edge sweeping operation 40 is greater than or equal to 50S and less than or equal to 70S, and the time of a single N-shaped operation 50 is greater than or equal to 4min and less than or equal to 6 min. The total time used for the edge sweeping operation 40 and the N-shaped operation 50 is greater than or equal to 18min and less than or equal to 22 min.
The hearth of the smelting furnace 100 comprises a first smelting edge 11, a second smelting edge 12, a third smelting edge 13 and a fourth smelting edge 14 which are connected in sequence, so that the hearth of the smelting furnace 100 is rectangular, and the third smelting edge 13 is provided with a smelting furnace door 15. The edge sweeping operation 40 is to fork the raking rakes by a forklift and rake the raking rakes along the first melting edge 11, the second melting edge 12 and the third melting edge 13 to rake the hearth. Used for reducing slag at the corners of the hearth.
The N-shaped operation 50 includes a first N-shaped motion 51 and a second N-shaped motion 52, the N-shaped operation 50 is that the raker performs the first N-shaped motion 51 from the inner end of the first melting edge 11 and then performs the second N-shaped motion 52, and the raker moves cyclically, and the raker gradually approaches the third melting edge 13 along with the first N-shaped motion 51 and the second N-shaped motion 52. The moving direction of the first N-shaped motion 51 is parallel to the first melting side 11, the moving length is equal to the length of the first melting side 11, and the second N-shaped motion 52 is obliquely arranged relative to the first melting side 11. The entire hearth of the melting furnace 100 can be slag-off by the N-shape operation 50.
Optionally, in some embodiments, the N-shaped operation 50 further comprises a third N-shaped motion 53, the N-shaped operation 50 continuously circulates the first N-shaped motion 51 and the second N-shaped motion 52, and when the second N-shaped motion 52 is finished and the rakes are moved to the end of the third melting edge 13, the third N-shaped motion 53 is performed. The third N-shaped movement 53 moves in a direction parallel to the first melting edge 11 and from one end of the third melting edge 13 to the other.
Alternatively, in some embodiments, the refining of the furnace 100 is performed by first performing the sweeping edge operation 40 and then performing the N-shaped operation 50. The edge sweeping operation 40 is performed first, and then the N-shaped operation 50 is performed, so that not only the standard is established, but also the first melting edge 11, the second melting edge 12 and the third melting edge 13 of the melting furnace 100 can be subjected to slag skimming, so that the slag residue at the corners is reduced.
S103, guiding the aluminum liquid into a holding furnace 200 for refining, and performing secondary slagging-off on the aluminum liquid through the alternate circulation of the N-shaped operation 50 and the Z-shaped operation 60.
Referring to fig. 4 to 6, in S103, the temperature of the holding furnace 200 is greater than or equal to 730 ℃ and less than or equal to 740 ℃. The hydrogen content of the aluminum liquid refined by the holding furnace 200 is less than or equal to 0.13ml/100 g.
The cycle times of the N-shaped operation 50 and the Z-shaped operation 60 are greater than or equal to 5 times and less than or equal to 7 times, and the time of each of the single N-shaped operation 50 and the single Z-shaped operation 60 is greater than or equal to 2min and less than or equal to 3 min. The total time used for N-forming operation 50 and Z-forming operation 60 is greater than or equal to 28min and less than or equal to 32 min.
The hearth of the holding furnace 200 comprises a first holding edge 21, a second holding edge 22, a third holding edge 23 and a fourth holding edge 24 which are connected in sequence, so that the hearth of the holding furnace 200 is rectangular, and a holding furnace door 26 is arranged on the fourth holding edge 24. Optionally, the second insulating edge 22 is longer than the first insulating edge 21.
The N-shaped operation 50 is to make the raking rake perform a first N-shaped motion 51 from the end of the first insulating edge 21 and then perform a second N-shaped motion 52, and move in a circular manner, and gradually approach the third insulating edge 23. When the second N-shaped movement 52 is finished and the raking harrow moves to the end part of the third heat-preserving side 23, a third N-shaped movement 53 is carried out, and the raking harrow moves from one degree of the third heat-preserving side 23 to the other end.
The Z-shaped operation 60 comprises a first Z-shaped motion 61 and a second Z-shaped motion 62, and the Z-shaped operation 60 is that the slag raking body performs the first Z-shaped motion 61 from the inner end part of the second heat preservation edge 22 and then performs the second Z-shaped motion 62, and the slag raking body moves circularly. The slag raking harrow gradually approaches the fourth heat-preservation edge 24 along with the first Z-shaped movement 61 and the second Z-shaped movement 62. The moving direction of the first Z-shaped motion 61 is parallel to the second heat-preservation side 22, the moving length is equal to the length of the second heat-preservation side 22, and the second Z-shaped motion 62 is obliquely arranged relative to the second heat-preservation side 22. The entire hearth of the holding furnace 200 can be slag-off by the Z-shaped operation 60.
Optionally, in some embodiments, the Z-operation 60 further comprises a third Z-motion 63, and the Z-operation 60 continuously cycles the first Z-motion 61 and the second Z-motion 62, and when the second Z-motion 62 is completed and the rake moves to the end of the fourth insulating side 24, the third Z-motion 63 is performed. The third Z-shaped movement 63 is parallel to the second insulating edge 22 and moves from one end of the fourth insulating edge 24 to the other.
Optionally, in some embodiments, the holding furnace 200 further comprises a fifth holding side 25, and the fifth holding side 25 is parallel to the first holding side 21 and is located at the midpoint of the second holding side 22. The number of the heat preservation doors is two, and the heat preservation doors are positioned at two opposite sides of the fifth heat preservation side 25.
Alternatively, in some embodiments, the refining of the holding furnace 200 is performed by performing the Z-pass operation 60 followed by the N-pass operation 50. Not only standardizes the slag skimming operation flow, but also reduces the slag on the long edge of the holding furnace 200 by skimming the second heat-preserving edge 22.
After S103, step S104 is further included, and step S104: and introducing the aluminum liquid into a degassing box and introducing argon to degas the aluminum liquid, wherein the hydrogen content of the degassed aluminum liquid is less than or equal to 0.08ml/100g, and the fluctuation range of the hydrogen content of the aluminum liquid in different time periods is less than or equal to 0.03ml/100 g.
In step S104, the pressure of the introduced argon is greater than or equal to 0.10MPa and less than or equal to 0.20MPa, and the flow rate of the introduced argon is greater than or equal to 18L/min and less than or equal to 22L/min. The rotating speed of the rotor of the degassing box is greater than or equal to 430r/min and less than or equal to 470 r/min. So that the hydrogen content in the aluminum liquid can be uniformly eliminated.
Therefore, the method for refining the aluminum-titanium foil provided by the application can comprise the following steps:
s101, putting the raw aluminum into a hearth of a smelting furnace 100 for refining, heating the hearth of the smelting furnace 100, and melting the raw aluminum to form aluminum liquid.
S102, carrying out primary slagging-off on the aluminum liquid through alternate circulation of edge sweeping operation 40 and N-shaped operation 50.
S103, guiding the aluminum liquid into a holding furnace 200 for refining, and performing secondary slagging-off on the aluminum liquid through the alternate circulation of the N-shaped operation 50 and the Z-shaped operation 60.
And introducing the aluminum liquid into a degassing box and introducing argon to degas the aluminum liquid, wherein the hydrogen content of the degassed aluminum liquid is less than or equal to 0.08ml/100g, and the fluctuation range of the hydrogen content of the aluminum liquid in different time periods is less than or equal to 0.03ml/100 g.
In summary, in the method for refining an aluminum-titanium foil provided in the embodiment of the present application, the edge sweeping operation 40 and the N-shaped operation 50 are performed in the melting furnace 100, and the Z-shaped operation 60 and the N-shaped operation 50 are performed in the holding furnace 200, so that the slag removal effect can be effectively improved, and the slag at the hearth corner of the melting furnace 100 and the hearth corner of the holding furnace 200 can be reduced. The degassing effect is improved by adjusting the pressure and flow of argon in the degassing box and the rotating speed of a rotor of the degassing box.
In addition, those skilled in the art should realize that the above embodiments are illustrative only and not limiting to the present application, and that suitable changes and modifications to the above embodiments are within the scope of the disclosure of the present application as long as they are within the true spirit and scope of the present application.
Claims (10)
1. A method for refining an aluminum-titanium foil, comprising:
forming aluminum liquid in a hearth of the smelting furnace;
carrying out primary slagging-off on the aluminum liquid through alternate circulation of edge sweeping operation and N-shaped operation;
and guiding the aluminum liquid subjected to primary slagging-off into a heat-preserving furnace, and carrying out secondary slagging-off on the aluminum liquid in the heat-preserving furnace through alternate circulation of N-shaped operation and Z-shaped operation.
2. The method for refining an aluminum-titanium foil as recited in claim 1, further comprising:
and introducing the aluminum liquid into a degassing box and introducing argon to degas the aluminum liquid, wherein the hydrogen content of the degassed aluminum liquid is less than or equal to 0.08ml/100g, and the fluctuation range of the hydrogen content of the aluminum liquid in different time periods is less than or equal to 0.03ml/100 g.
3. The refining method of aluminum-titanium foil according to claim 1, wherein the time for the aluminum liquid in the smelting furnace to perform a single sweeping operation is greater than or equal to 50s and less than or equal to 70 s; the time of the single N-shaped operation is more than or equal to 4min and less than or equal to 6 min.
4. The method for refining aluminum-titanium foil according to claim 3, wherein the number of times of the circulation of the edge sweeping operation and the N-shaped operation of the aluminum liquid in the smelting furnace is greater than or equal to 3 times and less than or equal to 5 times, and the service time is greater than or equal to 18min and less than or equal to 22 min.
5. The refining method of aluminum-titanium foil as recited in claim 1, wherein after the aluminum liquid is smelted by the holding furnace, the hydrogen content of the aluminum liquid is less than or equal to 0.13ml/100 g.
6. The method for refining aluminum-titanium foil according to claim 1, wherein the time for the aluminum liquid in the holding furnace to perform the N-shape work or the Z-shape work for a single time is greater than or equal to 2min and less than or equal to 3 min.
7. The method for refining aluminum-titanium foil according to claim 6, wherein the number of times of the Z-shape operation and the N-shape operation of the aluminum liquid in the holding furnace is cycled is greater than or equal to 5 times and less than or equal to 7 times, and the service time is greater than or equal to 28min and less than or equal to 32 min.
8. The method of refining an aluminum-titanium foil according to claim 2, wherein the temperature in the melting furnace is 740 ℃ or higher and 750 ℃ or lower, the temperature in the holding furnace is 730 ℃ or higher and 740 ℃ or lower, and the temperature in the degassing tank is 720 ℃ or higher and 730 ℃ or lower.
9. The method for refining an aluminum-titanium foil as recited in claim 2, wherein the pressure of the argon gas introduced is 0.10MPa or more and 0.20MPa or less, and the flow rate of the argon gas introduced is 18L/min or more and 22L/min or less.
10. The method for refining aluminum-titanium foil according to claim 2, wherein a rotation speed of a rotor of the deaerator tank is 430r/min or more and 470r/min or less.
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| CN103031470A (en) * | 2012-12-13 | 2013-04-10 | 湖南晟通科技集团有限公司 | Aluminum alloy and casting method thereof, and method for extruding profile |
| CN111394602A (en) * | 2020-04-24 | 2020-07-10 | 江苏科技大学 | High-quality aluminum alloy and preparation method thereof |
| CN113250356A (en) * | 2021-04-14 | 2021-08-13 | 甘肃东兴铝业有限公司 | Production process of aluminum alloy curtain wall plate strip base material for building |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031470A (en) * | 2012-12-13 | 2013-04-10 | 湖南晟通科技集团有限公司 | Aluminum alloy and casting method thereof, and method for extruding profile |
| CN111394602A (en) * | 2020-04-24 | 2020-07-10 | 江苏科技大学 | High-quality aluminum alloy and preparation method thereof |
| CN113250356A (en) * | 2021-04-14 | 2021-08-13 | 甘肃东兴铝业有限公司 | Production process of aluminum alloy curtain wall plate strip base material for building |
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