CN114540883B - Casting method for cathode aluminum soft belt of electrolytic tank - Google Patents
Casting method for cathode aluminum soft belt of electrolytic tank Download PDFInfo
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- CN114540883B CN114540883B CN202210268866.5A CN202210268866A CN114540883B CN 114540883 B CN114540883 B CN 114540883B CN 202210268866 A CN202210268866 A CN 202210268866A CN 114540883 B CN114540883 B CN 114540883B
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 224
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 223
- 238000005266 casting Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 43
- 239000010959 steel Substances 0.000 claims abstract description 43
- 238000003466 welding Methods 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 238000003892 spreading Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000011449 brick Substances 0.000 claims description 26
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a casting method of an electrolytic cell cathode aluminum soft belt, which comprises the following steps: (1) Installing a refractory mold at the interface of the electric-feeding end aluminum soft belt and the cathode steel bar end aluminum soft belt, so that the interval is 20-25 mm; (2) Filling a casting pot with a high Wen Lvye from an operating electrolytic tank, taking high-temperature aluminum liquid from the casting pot by using a casting ladle, casting the high-temperature aluminum liquid to the joint in the refractory mold, and spreading and covering the high-temperature aluminum liquid to aluminum soft belts at two ends of the joint; (3) Layering the aluminum soft belt, and then pouring the aluminum soft belt layer by layer upwards in sequence, wherein the aluminum soft belt at the power-in end and the aluminum soft belt at the cathode steel rod end on the same layer correspond to each other during pouring; the aluminum soft belt to be poured is bent aside; (4) When the aluminum soft belt is cast to the top layer, the high-temperature aluminum liquid fully casts the top plate of the top layer aluminum soft belt and surrounds the whole joint; (5) And after casting, cooling and molding, removing the refractory mold to finish casting and welding the aluminum soft belt in an electrified state.
Description
Technical Field
The invention relates to the technical field of electrolytic cell electrified overhaul, in particular to a casting method of an electrolytic cell cathode aluminum soft belt.
Background
Along with the continuous progress of technology and technology, the nonferrous metal electrolytic aluminum industry is continuously changed, so that the small-sized electrolytic tank is eliminated from being gradually built into a large-sized electrolytic tank, the productivity is improved, the energy consumption is reduced, and environmental protection is emphasized, such as 420KA, 500KA, 600KA and other electrolytic tanks.
The larger the direct current is introduced into the aluminum bus in the normal working state of the electrolytic tank, the larger the magnetic field generated around each conductor (such as upright post, cathode bus, etc.) of the electrolytic tank. When the production of the electrolysis shop series cannot be powered off, the welding in a strong magnetic field and electrified state is performed, and the quality of a plurality of welding seams cannot meet the requirements, even the welding seams cannot be performed. Therefore, there is a need to develop a construction method for the cathode soft belt to solve the existing problems.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and provides a casting method of cathode aluminum soft belts of an electrolytic cell. The method can ensure that the conductive quality and the voltage drop are better than those of welding, save time compared with welding, and have faster construction progress.
In order to achieve the above object of the present invention, the following technical scheme is adopted:
A casting method of cathode aluminum soft belt of an electrolytic cell, comprising;
(1) Installing a refractory mold at the interface of the electric-feeding end aluminum soft belt and the cathode steel rod end aluminum soft belt, and enabling a gap of 20-25 mm between the electric-feeding end aluminum soft belt and the cathode steel rod end aluminum soft belt;
(2) Filling a casting pot with a high Wen Lvye from an operating electrolytic tank, taking high-temperature aluminum liquid from the casting pot by using a casting ladle, casting the high-temperature aluminum liquid to the joint in the refractory mold, and spreading and covering the high-temperature aluminum liquid to aluminum soft belts at two ends of the joint;
(3) Dividing an aluminum soft belt into a bottom aluminum soft belt, a middle aluminum soft belt and a top aluminum soft belt, and then pouring the aluminum soft belts layer by layer upwards in sequence, wherein the aluminum soft belts at the power-on end and the aluminum soft belts at the cathode steel bar end on the same layer correspond to each other during pouring; the aluminum soft belt to be poured is bent aside;
(4) When the aluminum soft belt is cast to the top layer, the high-temperature aluminum liquid fully casts the top plate of the top layer aluminum soft belt and surrounds the whole joint;
(5) After casting, cooling and molding, removing the refractory mold, checking whether an unprimed part exists at the joint, and thus completing casting and welding of the aluminum soft belt of the electrolytic tank.
Further, the bottom aluminum soft belt is divided into a bottom electricity feeding end aluminum soft belt and a bottom cathode steel bar end aluminum soft belt; the middle layer aluminum soft belt is divided into a middle layer power-on end aluminum soft belt and a middle layer cathode steel bar end aluminum soft belt; the top layer aluminum soft belt is divided into a top layer power-on end aluminum soft belt and a top layer cathode steel bar end aluminum soft belt.
Further, the aluminum soft belt is formed by press-spot welding a plurality of thin aluminum soft belts together.
Further, the refractory mold comprises two refractory brick molds, the two refractory brick molds are movably spliced, a pouring groove is formed at the splicing position, one end of the pouring groove is sleeved with the power-in end aluminum soft belt, and the other end of the pouring groove is sleeved with the cathode steel bar end aluminum soft belt.
Further, aluminum water tanks are arranged on the side surfaces of the splicing parts of the two refractory brick molds.
Further, the depth of the aluminum water tank is 10-15 mm.
Further, the aluminum water tank is of an L-shaped structure.
Further, a notch is formed in one side of the refractory brick die.
Further, two refractory brick molds are correspondingly movably spliced at one side provided with the notch, and the two corresponding notches are spliced to form the pouring groove.
Further, the notch is of an L-shaped structure.
Compared with the prior art, the invention has the advantages that:
1. The invention can cast and weld the aluminum soft belt at the power-on end and the aluminum soft belt at the cathode steel bar end in a charged state, and can overcome the problems that the aluminum soft belt is charged, cannot be welded under a strong magnetic field and has poor welding quality; the interface of the power-in end aluminum soft belt and the cathode steel bar end aluminum soft belt is supported and cast by adopting a refractory mold, and the refractory mold realizes the wrapping of the interface, so that the cast high-temperature aluminum water wraps and encapsulates the power-in end aluminum soft belt and the cathode steel bar end aluminum soft belt at the interface; the refractory mold can guide the poured high-temperature molten aluminum to flow from one side to the other side from the bottom, so that the high-temperature molten aluminum is used for integrally wrapping the joint, and good pouring welding quality is achieved.
2. The refractory mold is formed by splicing refractory brick molds, and a pouring groove is formed at the splicing position, one end of the pouring groove is sleeved on the electric-feeding end aluminum soft belt, and the other end of the pouring groove is sleeved on the cathode steel rod end aluminum soft belt, so that the pouring groove can provide space for pouring and welding between the electric-feeding end aluminum soft belt and the cathode steel rod end aluminum soft belt, and simultaneously can limit high-temperature aluminum water at the interface between the electric-feeding end aluminum soft belt and the cathode steel rod end aluminum soft belt, so that the cooled high-temperature aluminum water can effectively weld the electric-feeding end aluminum soft belt and the cathode steel rod end aluminum soft belt.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of a die set used in the casting method of cathode aluminum soft belt of an electrolytic cell according to the present invention;
FIG. 2 is a schematic view of the refractory brick mold according to the present invention;
FIG. 3 is a schematic diagram of a front view structure of the casting of the middle-bottom aluminum soft belt of the invention;
FIG. 4 is a left side schematic view of FIG. 3;
FIG. 5 is a schematic top view of FIG. 3;
FIG. 6 is a schematic diagram of a front view of an intermediate layer aluminum soft belt according to the present invention;
FIG. 7 is a left side schematic view of FIG. 6;
FIG. 8 is a schematic top view of FIG. 6;
FIG. 9 is a schematic diagram of the front view of the top aluminum soft belt of the present invention;
FIG. 10 is a schematic left-hand view of FIG. 9;
FIG. 11 is a schematic top view of FIG. 9;
The names and serial numbers of the components in the figure: 1-refractory brick mould, 11-aluminum water tank, 12-pouring tank, 13-notch, 2-pouring power-in end aluminum soft belt, 3-pouring aluminum water, 4-pouring cathode steel rod end aluminum soft belt, 5-power-in end aluminum soft belt to be poured and 6-cathode steel rod end aluminum soft belt to be poured.
Detailed Description
In order to make the technical solution of the present application better understood by those skilled in the art, the technical solution of the present application will be clearly and completely described with reference to the accompanying drawings and examples, and it is apparent that the described examples are only a part of examples of the present application, and all other examples obtained by those skilled in the art without making any inventive effort are intended to be within the scope of the present application.
Example 1:
As shown in fig. 1 to 11, a casting method of cathode aluminum soft belt of an electrolytic cell, the casting method comprising;
(1) Installing a refractory mold at the interface of the electric-feeding end aluminum soft belt and the cathode steel rod end aluminum soft belt, and enabling the interval between the electric-feeding end aluminum soft belt and the cathode steel rod end aluminum soft belt to be 20-25 mm;
(2) Filling a casting pot with a high Wen Lvye from an operating electrolytic tank, taking high-temperature aluminum liquid from the casting pot by using a casting ladle, casting the high-temperature aluminum liquid to the joint in the refractory mold, and spreading and covering the high-temperature aluminum liquid to aluminum soft belts at two ends of the joint;
(3) Dividing an aluminum soft belt into a bottom aluminum soft belt, a middle aluminum soft belt and a top aluminum soft belt, and then pouring the aluminum soft belts layer by layer upwards in sequence, wherein the aluminum soft belts at the power-on end and the aluminum soft belts at the cathode steel bar end on the same layer correspond to each other during pouring; the aluminum soft belt to be poured is bent aside;
(4) When the aluminum soft belt is cast to the top layer, the high-temperature aluminum liquid fully casts the top plate of the top layer aluminum soft belt and surrounds the whole joint;
(5) After casting, cooling and molding, removing the refractory mold, checking whether an unprimed part exists at the joint, and thus completing casting and welding of the aluminum soft belt of the electrolytic tank.
The interval between the feeding end aluminum soft belt and the cathode steel bar end aluminum soft belt can be 20, 21, 22, 23, 24 or 25mm, etc. The casting device is beneficial to casting the high Wen Lvshui to the joint, can avoid the overlarge thickness of aluminum water at the joint, and reduces the influence of the casting welding part on voltage transmission.
The invention respectively layers the power-on end aluminum soft belt and the cathode steel bar end aluminum soft belt, the power-on end aluminum soft belt and the cathode steel bar end aluminum soft belt on each layer correspond to each other, and the power-on end aluminum soft belt and the cathode steel bar end aluminum soft belt on each layer have equal thickness; therefore, the quality of casting welding can be improved better, and the influence of the welding connection part on the conveying voltage is reduced.
According to the invention, after layering, the bottom layer is sequentially cast and welded to the top layer, so that the casting and welding between the power-in end aluminum soft belt and the cathode steel rod end aluminum soft belt on each layer are good, and the residual bubbles in high-temperature molten aluminum during casting can be prevented.
Example 2:
compared with example 1, the difference is that: in order to better cast the electric-feeding end aluminum soft belt and the cathode steel rod end aluminum soft belt, the electric-feeding end aluminum soft belt and the cathode steel rod end aluminum soft belt are respectively layered, namely:
the bottom aluminum soft belt is divided into a bottom electric-feeding end aluminum soft belt and a bottom cathode steel rod end aluminum soft belt; the middle layer aluminum soft belt is divided into a middle layer power-on end aluminum soft belt and a middle layer cathode steel bar end aluminum soft belt; the top layer aluminum soft belt is divided into a top layer power-on end aluminum soft belt and a top layer cathode steel bar end aluminum soft belt.
Example 3:
Compared with the embodiment 1 or 2, the difference is that: the structural form of the aluminum soft belt is given.
The aluminum soft belt is formed by welding a plurality of thin aluminum soft belts together in a pressed and spot mode. Typically, an aluminum soft belt employs a number of thin aluminum soft belts of 4,5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, etc.
And a plurality of thin aluminum soft belts are subjected to spot welding bundling, so that layering of the aluminum soft belts can be facilitated, the thin aluminum soft belts can be well fixed, and deformation caused by high temperature to the thin aluminum soft belts is reduced.
Example 4:
the difference compared to any of examples 1-3 is that: the structural form of the refractory brick mould is given.
The refractory mold comprises two refractory brick molds 1, wherein the two refractory brick molds 1 are movably spliced, a pouring groove 12 is formed at the splicing position, one end of the pouring groove 12 is sleeved with an aluminum soft belt at the power-in end, and the other end of the pouring groove 12 is sleeved with an aluminum soft belt at the end of a cathode steel rod.
Example 5:
Compared with example 4, the difference is that: in order to enable high-temperature aluminum water to flow downwards from the side surface of the aluminum soft belt in the refractory mold, an aluminum water tank is added.
The side surfaces of the splicing parts of the two refractory brick molds 1 are provided with aluminum water tanks 11. The high-temperature molten aluminum is spread and covered from the joint to the periphery, and the aluminum water tank can increase the distance between the refractory mold and the aluminum soft belt, so that the high-temperature molten aluminum can be limited at the side surface of the aluminum soft belt while flowing downwards through the side surface of the aluminum soft belt, the side surface and the bottom of the joint are packaged, and welding between the aluminum soft belt at the power-in end and the aluminum soft belt at the cathode steel rod end in an electrified state is finished.
Example 6:
Compared with example 4, the difference is that: the depth structure of the aluminum water tank is given.
The depth of the aluminum water tank 11 is 10-15 mm. The depth may typically be 10, 11, 12, 13, 14 or 15mm, etc.
Example 7:
Compared with example 4, the difference is that: the structural form of the aluminum water tank is given.
The aluminum water tank 11 has an L-shaped structure. The two refractory brick molds are correspondingly spliced on one side provided with the aluminum water tank, after the two refractory brick molds are spliced, the aluminum water tank is connected to wrap the side face and the bottom of the aluminum soft belt, so that high-temperature aluminum water poured can flow from the side face of the joint to the bottom, under the action of the aluminum water tank, the side face and the bottom of the aluminum soft belt can be accumulated to be high Wen Lvshui with a certain thickness, and further the packaging of the side face and the bottom of the aluminum soft belt can be facilitated.
When the high-temperature aluminum water is poured, the high Wen Lvshui can be injected from the aluminum water tank on one side, and the high-temperature aluminum water flows from the aluminum water tank on one side to the aluminum water tank on the other refractory brick die, so that air in the tank is conveniently pushed out outwards, and the side face and the bottom of the aluminum soft belt can be better packaged after the high-temperature aluminum water is cooled.
Example 8:
compared with example 4, the difference is that: in order to facilitate the formation of a pouring slot after the two refractory brick molds are spliced, a notch is additionally arranged.
A notch 13 is formed in one side of the refractory brick die. Can lead the two refractory brick moulds to form a pouring slot after being spliced.
Example 9:
compared with example 8, the difference is that: the structure form of the refractory brick mould splicing is given.
The two refractory brick molds are correspondingly movably spliced at one side provided with the notch 13, and the two corresponding notches 13 are spliced to form the pouring groove 12.
Example 10:
Compared with example 8 or 9, the difference is that: a structural form of the notch is given.
The notch 13 has an L-shaped structure. Can be favorable for forming a pouring slot after the two refractory brick dies are spliced. The bottom surface of the notch is inserted into the bottom of the joint of the electric-charging end aluminum soft belt and the cathode steel rod end aluminum soft belt, and the side surface of the notch props against the electric-charging end aluminum soft belt and the cathode steel rod end aluminum soft belt, so that the transverse movement and downward swinging of the electric-charging end aluminum soft belt and the cathode steel rod end aluminum soft belt can be effectively prevented.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being within the scope of the invention, obvious variations or modifications may be made thereto.
Claims (6)
1. A casting method of cathode aluminum soft belt of an electrolytic cell, which is characterized by comprising the following steps:
(1) Installing a refractory mold at the interface of the electric-feeding end aluminum soft belt and the cathode steel rod end aluminum soft belt, and enabling the interval between the electric-feeding end aluminum soft belt and the cathode steel rod end aluminum soft belt to be 20-25 mm;
(2) Filling a casting pot with a high Wen Lvye from an operating electrolytic tank, taking high-temperature aluminum liquid from the casting pot by using a casting ladle, casting the high-temperature aluminum liquid to the joint in the refractory mold, and spreading and covering the high-temperature aluminum liquid to aluminum soft belts at two ends of the joint;
(3) Dividing an aluminum soft belt into a bottom aluminum soft belt, a middle aluminum soft belt and a top aluminum soft belt, and then pouring the aluminum soft belts layer by layer upwards in sequence, wherein the aluminum soft belts at the power-on end and the aluminum soft belts at the cathode steel bar end on the same layer correspond to each other during pouring; the aluminum soft belt to be poured is bent aside;
(4) When the aluminum soft belt is cast to the top layer, the high-temperature aluminum liquid fully casts the top plate of the top layer aluminum soft belt and surrounds the whole joint;
(5) After casting, cooling and molding, removing the refractory mold, and checking whether an unprimed part exists at the joint, namely completing casting and welding of the aluminum soft belt of the electrolytic cell in an electrified state;
The refractory mold comprises two refractory brick molds (1), wherein the two refractory brick molds (1) are movably spliced, a pouring groove (12) is formed at the splicing position, one end of the pouring groove (12) is sleeved on the aluminum soft belt at the power-in end, and the other end of the pouring groove is sleeved on the aluminum soft belt at the end of the cathode steel rod;
an aluminum water tank (11) is arranged on the side surface of the splicing part of the two refractory brick molds (1);
A gap (13) is formed on one side of the refractory brick die (1);
The two refractory brick molds (1) are correspondingly movably spliced at one side provided with the notch (13), and the two corresponding notches (13) are spliced to form the pouring groove (12).
2. The electrolytic cell cathode aluminum soft belt casting method according to claim 1, characterized in that: the bottom aluminum soft belt is divided into a bottom electric-feeding end aluminum soft belt and a bottom cathode steel rod end aluminum soft belt;
the middle layer aluminum soft belt is divided into a middle layer power-on end aluminum soft belt and a middle layer cathode steel bar end aluminum soft belt;
The top layer aluminum soft belt is divided into a top layer power-on end aluminum soft belt and a top layer cathode steel bar end aluminum soft belt.
3. The electrolytic cell cathode aluminum soft belt casting method according to claim 1, characterized in that: the aluminum soft belt is formed by welding a plurality of thin aluminum soft belts together in a pressed and spot mode.
4. The electrolytic cell cathode aluminum soft belt casting method according to claim 1, characterized in that: the depth of the aluminum water tank (11) is 10-15 mm.
5. The electrolytic cell cathode aluminum soft belt casting method according to claim 1, characterized in that: the aluminum water tank (11) is of an L-shaped structure.
6. The electrolytic cell cathode aluminum soft belt casting method according to claim 1, characterized in that: the notch (13) is of an L-shaped structure.
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| CN202210268866.5A CN114540883B (en) | 2022-03-18 | 2022-03-18 | Casting method for cathode aluminum soft belt of electrolytic tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210268866.5A CN114540883B (en) | 2022-03-18 | 2022-03-18 | Casting method for cathode aluminum soft belt of electrolytic tank |
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| CN114540883B true CN114540883B (en) | 2024-05-28 |
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