Novel double-anode conductive device for aluminum electrolysis cell

Abstract

A novel double-anode conductive device for an aluminum electrolysis cell is mainly applied to production of the aluminum electrolysis cell and preparation and design of technical equipment of the aluminum electrolysis cell. In order to solve the problems that when an existing anode conductive device of the double-anode aluminum electrolysis cell is used for assembling an anode, a phosphorus pig iron hot casting mode is adopted, and a double-anode steel claw and two anode carbon blocks are assembled, so that the construction cost is high; in order to solve the problems that in the electrolytic aluminum production process, consumed direct current energy is wasted, and the like, the invention discloses a novel aluminum electrolysis cell double-anode carbon block anode conductive device. The device is formed by combining a center connection conductive metal device, two side clamping anode conductive metal devices and two anode carbon blocks with anode conductive concave grooves in the tops. A plurality of anode conductive cross beams are constructed at the bottom of the anode conductive metal structure; when the anode is assembled, the anode conductive cross beam is assembled and constructed in the anode conductive concave groove at the top of the anode carbon block to form the double-anode conductive device for the aluminum electrolysis cell.

Description

[0001] Technical Field: A novel dual-anode conductive device for an aluminum electrolysis cell described in the present invention is mainly applied to the production of aluminum electrolysis cells and the preparation and design of technical equipment for aluminum electrolysis cells.

[0002] Background Art: The anode conductive device of an aluminum electrolysis cell is a conductive device that conducts the direct current of the anode busbar of the aluminum electrolysis cell to the anode carbon block and the electrolyte solution, enabling the anode carbon block to participate in the electrolytic thermal electrolysis chemical reaction. The existing anode conductive devices have two structural forms: single anode and dual anode. The structural technical features of the existing dual-anode aluminum electrolysis cell anode conductive device are as follows: The dual-anode conductive device is composed of an aluminum guide rod and a group of eight-claw anode steel claw heads or six-claw anode steel claw heads arranged in parallel in a double-row crossbeam. During anode assembly, two groups of mutually parallel anode steel claw heads are fixed in the carbon bowls of two anode carbon blocks by casting phosphorus iron rings to implement the conductive structure connection. The existing dual-anode conductive device, although having the characteristics of simple pole-changing, also has the following technical defects: First, the assembly cost of constructing the dual-anode steel claw and two anode carbon blocks together by using the method of hot-casting phosphorus cast iron is relatively high; second, using phosphorus cast iron as the conductive structure medium for the iron-carbon interface combination between the anode carbon block and the anode steel claw, the resistance value and voltage drop value of its structure are relatively high, and the direct current wasted and consumed during the production of electrolytic aluminum can be relatively high; third, the deformation amount and maintenance cost of the anode steel claw are relatively high. In order to reduce the energy consumption cost and construction production cost of electrolytic aluminum and overcome the above-mentioned problems and defects of the existing technology, the inventor of this case has developed a novel dual-anode carbon block anode conductive device for an aluminum electrolysis cell.

[0003] Summary of the Invention: In order to improve the conductive performance of the dual-anode conductive device of an aluminum electrolysis cell, reduce the construction cost of the production of the dual-anode conductive device of an aluminum electrolysis cell, and the process cost of casting phosphorus iron rings to assemble anode carbon blocks. The present invention proposes and discloses a structural technical solution for a novel dual-anode conductive device for an aluminum electrolysis cell.

[0004] A novel dual-anode conductive device for an aluminum electrolysis cell described in the present invention has the following structural technical features: The dual-anode conductive device is composed of a dual-anode central connection conductive metal device and two side clamping anode conductive metal devices to form a dual-anode conductive metal device, and two anode carbon blocks (10) with anode conductive concave grooves (9) constructed on the upper top are assembled and configured; at the bottom of the dual-anode conductive metal device, an anode conductive crossbeam (8) is constructed, and the anode conductive crossbeam (8) is correspondingly installed and configured with the anode conductive concave groove (9) at the top of the anode carbon block (10).

[0005] According to the above technical solution, the double-anode center-connected conductive metal device described herein is composed of an aluminum conductor bar (1), an aluminum-steel composite explosion-welded sheet (2), an anode conductive column (3), an anode conductive current-dividing plate (4); an anode conductive reinforcing connecting plate (5), an anode conductive connecting side vertical plate (6), and an anode conductive cross beam (8) combined and constructed.

[0006] According to the above technical solution, for the double-anode center-connected conductive metal device described herein, the aluminum conductor bar (1), the aluminum-steel composite explosion-welded sheet (2), and the anode conductive column (3) are connected up and down by welding and constructed on the same center line.

[0007] According to the above technical solution, the anode conductive current-dividing plate (4) of the double-anode center-connected conductive metal device is constructed on both sides of the bottom of the anode conductive column (3); at the bottom sides of the anode conductive current-dividing plate (4), an anode conductive cross beam (8) is provided, and an anode conductive reinforcing connecting plate (5) is provided on the upper part of the anode conductive cross beam (8) and the side part of the anode conductive current-dividing plate (4).

[0008] According to the above technical solution, at both ends of the anode conductive current-dividing plate (4) of the double-anode center-connected conductive metal device, anode conductive connecting side vertical plates (6) are respectively constructed; on the anode conductive connecting side vertical plate (6), bolt connection holes are constructed, and through these bolt connection holes, the anode fastening connection conductive vertical plate (7) and the anode conductive cross beam (8) of the double-anode side-clamped anode conductive metal device can be installed and constructed together by using fastening bolts (11) and fastening nuts (12).

[0009] According to the above technical solution, the two side-clamped anode conductive metal devices of the anode conductive metal device described in the present invention are composed of an anode fastening connection conductive vertical plate (7) and an anode conductive cross beam (8) combined and welded.

[0010] According to the above technical solution, the double-anode conductive metal device described in the present invention is constructed by combining conductive metal materials with low resistance values and excellent conductivity; or is produced and processed by using a copper-steel composite structure.

[0011] According to the above technical solution, in order to improve the conductive connection performance of the anode metal conductive device, the fastening connection conductive vertical plate (7) and the conductive connection vertical plate (6) can be constructed of pure iron materials or configured with copper-steel composite structural parts.

[0012] According to the above technical solution, the anode carbon block configured by the double-anode conductive device described in the present invention is characterized in that: an anode conductive concave groove (9) is constructed on the top of the anode carbon block (10). The anode conductive concave groove (9) is correspondingly configured with the anode conductive cross beam (8) of the anode conductive metal device.

[0013] According to the above technical solution, when assembling the overall double-anode conductive device, first assemble the two anode conductive crossbeams (8) at the bottom of the double-anode center connecting conductive metal device into the inner anode conductive concave grooves (9) on the upper parts of the two symmetrically arranged anode carbon blocks (10), and then assemble the anode conductive crossbeam (8) arranged at the bottom of the fastening connecting conductive vertical plate (7) into the anode conductive concave groove (9) on the outer side of the upper part of the anode carbon block (10). Then, use fastening bolts (11) and fastening nuts (12) to tightly connect and construct the fastening connecting conductive vertical plate (7) and the conductive connecting vertical plate (6), so that the anode conductive crossbeam (8) constructed at the bottom of the fastening connecting conductive vertical plate (7) and the anode conductive crossbeam (8) arranged at the bottom of the anode conductive current-dividing plate generate lateral extrusion and fitting friction force on the anode conductive boss between the two conductive concave grooves on the upper part of the anode carbon block (10). Finally, combine and construct an anode conductive metal device and two anode carbon blocks together to form a double-anode conductive device for an aluminum electrolysis cell with an anode metal conductive device on the upper part and two anode carbon blocks configured on the lower part. Under the technical conditions of the electrolysis thermal working condition, by using the physical characteristic that the thermal expansion coefficient of the anode conductive crossbeam metal is greater than that of the carbon anode material, a dense and firm conductive connection and a high-strength structural connection are generated between the iron-carbon bonding contact interfaces of the anode conductive metal device and the anode carbon block.

[0014] During the production process of electrolytic aluminum, compared with the prior art, the double-anode conductive device for an aluminum electrolysis cell described in the present invention has the following technical advantages: the casting process of the hot-cast phosphor-iron ring is cancelled, so that a dense iron-carbon interface conductive connection is directly generated between the anode conductive crossbeam and the anode carbon block. Therefore, adopting this technical solution not only reduces the assembly and construction cost of its anode conductive device, but also can reduce the structural voltage drop resistance value of the anode conductive device, providing technical equipment support and production process support for the energy conservation and consumption reduction of electrolytic aluminum production.

[0015] Brief description of the drawings: The implementation technical solution of the double-anode conductive device for an aluminum electrolysis cell described in the present invention will be clearer about its technical features through the description of the specification drawings and specific embodiments.

[0016] Figure 1 It is the front view of the double-anode conductive metal device in the embodiment of the present invention.

[0017] Figure 2 is Figure 1 the side view of.

[0018] Figure 3 is Figure 1 the top plan view of.

[0019] Figure 4 It is the front view of the center connecting conductive metal device in the embodiment of the present invention.

[0020] Figure 5 This is the front view of the side connection clamping conductive metal device in the embodiment of the present invention.

[0021] Figure 6 This is the assembly schematic diagram of the central connection conductive metal device and the anode carbon block in the embodiment of the present invention.

[0022] Figure 7 This is the assembly schematic diagram of the side connection clamping conductive metal device, the anode carbon block and the central connection conductive metal device in the embodiment of the present invention.

[0023] Figure 8 This is the front view of the finished product after the assembly of the double anode conductive device in the embodiment of the present invention.

[0024] Figure 9 is Figure 8 side view.

[0025] Figure 10 is Figure 8 top view.

[0026] Figure 11 This is the conductive structure schematic diagram after the assembly structure of the anode metal conductive device and the anode carbon block in the embodiment of the present invention.

[0027] Figure 12 This is the front view of the 6th part conductive connection vertical plate or the 7th part fastening connection conductive plate using a copper-steel composite structure part in the embodiment of the present invention.

[0028] Figure 13 is Figure 12 side view.

[0029] Figure 14 This is the front view of the central connection conductive metal device constructed with a copper-steel composite structure in the embodiment of the present invention.

[0030] As shown in the figure: 1 aluminum busbar, 2 aluminum-steel composite explosion bonding sheet, 3 anode conductive column, 4 anode conductive current dividing plate, 5 anode conductive reinforcing connecting plate, 6 conductive connection vertical plate, 7 fastening connection conductive plate, 8 anode conductive cross beam, 9 anode conductive concave groove, 10 anode carbon block, 11 fastening bolt rod, 12 fastening nut, 13 anode conductive boss, 14 composite steel plate, 15 conductive copper composite plate, 16 conductive copper rod, 17 bolt hole.

[0031] Specific embodiments; For the double anode conductive device for aluminum electrolytic cells described in the present invention, its technical solutions and technical features can be more clearly understood by reading the specification, the specification drawings, and specific embodiments.

[0032] Such as Figure 8 , Figure 9 andFigure 10 , the dual-anode conductive device described in the embodiments of the present invention; consists of a dual-anode central connecting conductive metal device, and two dual-anode side connecting clamping conductive metal devices (such as Figure 1 Figure 2 and Figure 3 shown), and two anode carbon blocks (10) are combined and constructed as Figure 9 Figure 10 shown.

[0033] The structural feature of the dual-anode conductive metal device described in this embodiment is that it is composed of an aluminum conductor bar (1), an aluminum-steel composite explosion-bonded sheet (2), an anode conductive column (3), an anode conductive shunt plate (4), an anode conductive reinforcing connecting plate (5), an anode conductive connecting side vertical plate (6), a side-end fastening connecting conductive plate (7), an anode conductive cross beam (8), a fastening bolt rod (11) and a fastening nut (12) and other components are combined and constructed.

[0034] Such as Figure 1 Figure 2 and Figure 3 shown: The dual-anode central connecting conductive metal device described in this embodiment is composed of an aluminum conductor bar (1), an aluminum-steel composite explosion-bonded sheet (2), an anode conductive column (3), an anode conductive shunt plate (4), an anode conductive reinforcing connecting plate (5), an anode conductive connecting side vertical plate (6), and an anode conductive cross beam (8) and other components are combined and constructed.

[0035] Such as Figure 4 shown: The structural feature of the dual-anode central connecting conductive metal device described in this embodiment is that on both sides of the bottom center line of the anode conductive column (3), an anode conductive shunt plate (4) is constructed; on both bottom sides of the anode conductive shunt plate (4), along the length direction of the anode carbon block, that is, in the direction perpendicular to the horizontal conductive shunt connecting plate, anode conductive cross beams (8) are respectively constructed; and on the upper part of the anode conductive cross beam (8) and the side part of the anode conductive shunt plate (4), an anode conductive reinforcing connecting plate (5) is provided. The anode conductive reinforcing connecting plate (5) is welded to the upper part of the anode conductive cross beam (8) and the side part surface of the anode conductive shunt plate (4).

[0036] Such as Figure 4 and Figure 5 shown: The structural feature of the dual-anode central connecting conductive metal device described in this embodiment is further that on both side ends of the anode conductive shunt plate (4), an anode conductive connecting side vertical plate (6) is constructed; on the anode conductive connecting side vertical plate (6), bolt connection holes are provided, and through these bolt connection holes, two side-end fastening connecting conductive plates (7) with anode conductive cross beams (8) constructed at the bottom can be structurally connected by using fastening bolts (11) and fastening nuts (12).

[0037] The structural components of the dual-anode central connection conductive metal device described in this embodiment, namely the anode conductive column (3), the anode conductive shunt plate (4), the anode conductive reinforcement connection plate (5), and the anode conductive connection side plate (6), are constructed by welding using a conductive metal material with a low resistance value and excellent conductivity, such as low-carbon steel. To improve the conductive connection performance of the anode metal conductive device, between the dual-anode central metal conductive device and the two side connection clamping conductive metal devices that are symmetric left and right, that is, between the side fastening connection conductive plate (7) and the conductive connection plate (6), the two components can be configured as a copper-steel composite for structural connection. As Figure 11 Figure 12 shown.

[0038] As Figure 4 shown, in the embodiment of the present invention, two anode conductive crossbeams (8) are constructed along the length direction of the anode carbon block (10) at the bottom of the left and right sides of the anode conductive shunt plate (4) of the dual-anode central connection conductive metal device. When assembling the anode conductive device, the two symmetric left and right anode conductive crossbeams (8) are respectively assembled and constructed in the anode conductive concave grooves (9) on the inner sides of the tops of the two symmetric left and right anode carbon blocks (10), and are tightly connected with the two anode carbon blocks (10) by means of an inserted and embedded conductive structure.

[0039] The two side connection clamping conductive metal devices constructed on the left and right sides of the anode conductive shunt plate (4) of the dual-anode central connection conductive metal device described in this embodiment are welded and combined by the side fastening connection conductive plate (7) and the anode conductive crossbeam (8). Its structural feature is that on the bottoms of the two symmetric left and right fastening connection electric plates (7), along the length direction of the anode carbon block (10), the upper anode conductive crossbeams (8) are respectively welded symmetrically in parallel. When assembling, the two symmetric left and right anode conductive crossbeams (8) are respectively assembled and constructed in the anode conductive concave grooves (9) on the outer sides of the tops of the two symmetric left and right anode carbon blocks (10), and are tightly connected with the two anode carbon blocks (1) by means of a conductive structure.

[0040] As Figure 9 and Figure 10 shown: The dual-anode conductive device described in this embodiment is equipped with two left and right anode carbon blocks (10). On the upper part of each anode carbon block (10), along the length direction of the center line of the anode carbon block (10), two rectangular anode conductive concave grooves (9) are provided. The structural contour dimensions of the anode conductive concave grooves (9) provided on the upper part of the anode carbon block (10) correspond to the structural contour dimensions of the anode conductive crossbeams (8) at the bottom of the anode conductive metal device.

[0041] As Figure 6Figure 7 As shown: When the novel dual-anode conductive device of the aluminum electrolytic cell described in the embodiments of the present invention is assembled as a whole, the technological sequence is as follows: First, the two anode conductive crossbeams (8) at the bottom of the dual-anode center connection conductive metal device are assembled into the inner anode conductive concave grooves (9) on the upper parts of two symmetrically arranged anode carbon blocks (10). Second, the anode conductive crossbeams (8) arranged at the bottom of the fastening connection conductive vertical plate (7) are assembled into the anode conductive concave grooves (9) on the outer sides of the upper parts of the anode carbon blocks (10). Third, the fastening connection conductive vertical plate (7) and the conductive connection vertical plate (6) are tightened and structurally connected with fastening bolts (11) and fastening nuts (12); so that the anode conductive crossbeams (8) structured at the bottom of the fastening connection conductive vertical plate (7) and the anode conductive crossbeams (8) arranged on the left and right sides at the bottom of the anode conductive shunt plate generate a lateral horizontal extrusion and clamping structural force on the anode conductive boss (13) between the two conductive concave grooves (9) on the upper part of the anode carbon block (10), as Figure 11 shown; Finally, an anode conductive metal device is used to combine the two anode carbon blocks (10) together to form a dual-anode conductive device of the aluminum electrolytic cell with an anode metal conductive device on the upper part and two anode carbon blocks configured on the lower part. As Figure 8 , Figure 9 and Figure 10 shown. As shown, during the production process of electrolytic aluminum, for the dual-anode conductive device of the aluminum electrolytic cell described in the above embodiments of the present invention,

[0042] In the initial stage after the assembly of the anode conductive device described in the present invention, the anode carbon block and the anode conductive metal device rely on the clamping force formed by the two anode conductive crossbeams on the anode conductive boss (13) to structure the anode carbon block and the anode conductive arrest device together to form a conductive connection structure. Subsequently, under the thermal working conditions of the aluminum electrolytic cell, the physical characteristic that the thermal expansion rate of the metal material of the anode conductive crossbeam is greater than that of the carbon anode material can be utilized to make the anode conductive crossbeam (8) and the anode carbon block (10) generate a tighter and firmer conductive connection, thereby optimizing and improving the conductive structure performance of the conditional conductive device.

[0043] In order to improve the conductive performance of the anode conductive device of the present invention and reduce its structural resistance value voltage drop, the conductive connection vertical plate (6) and the fastening connection conductive plate (7) can be structured with a copper-steel composite plate during the structuring of the anode conductive device. As Figure 12 and Figure 13 shown.

[0044] As Figure 14As shown, in the embodiments of the present invention, in order to improve the electrical conductivity of the dual-anode conductive device of the present invention and reduce the voltage drop of its structural resistance value, during the processing and construction, the conductive connection components of the dual anodes, namely the anode conductive column (3), the anode conductive shunt plate (4), and the anode conductive cross beam (8), can be processed and configured using copper-steel composite structural components. That is, the conductive columns (3), the anode conductive shunt plates (4), and the conductive cross beams (8) of the anode metal conductive device are constructed using a copper-steel composite structure. For example, on the steel structural components, conductive copper plates or conductive copper rods (16) are added during construction, and a composite structure design of steel-clad copper or copper-clad steel is adopted.

Claims

1. A novel double anode conductive device for aluminum electrolytic cell, characterized in that: The dual anode conductive device is assembled and configured by a central connecting conductive metal device with an anode conductive cross beam (8) at the bottom, two side clamping anode conductive metal devices, and two anode carbon blocks (10) with anode conductive concave grooves (9) at the top; the anode conductive cross beam (8) is configured and configured correspondingly to the anode conductive concave grooves (9) at the top of the anode carbon block (10).

2. A novel double anode conductive device for an aluminum electrolytic cell according to claim 1, characterized in that: The central connecting conductive metal device of the anode conductive device is composed of an aluminum guide rod (1), an aluminum-steel composite connecting welding piece (2), an anode conductive column (3), an anode conductive shunt plate (4); an anode conductive reinforcing connecting plate (5), an anode conductive connecting side vertical plate (6) and an anode conductive crossbeam (8); the aluminum guide rod (1), the aluminum-steel composite explosion welding piece (2) and the anode conductive column (3) are welded, and the upper and lower connection structures are on a central line.

3. A novel double anode conductive device for aluminum electrolytic cell according to claim 1, characterized in that: The anode conductive shunt plate (4) of the centrally connected conductive metal device of the anode conductive device is constructed on both sides of the bottom of the anode conductive column (3); an anode conductive cross beam (8) is arranged at the bottom of both sides of the anode conductive shunt plate (4), and an anode conductive reinforcing connecting plate (5) is arranged on the upper part of the anode conductive cross beam (8) and the side of the anode conductive shunt plate (4).

4. A novel double anode conductive device for aluminum electrolytic cell according to claim 1, characterized in that: Anode conductive connection side vertical plates (6) are respectively arranged at the two ends of the anode conductive shunt plate (4) of the central connecting conductive metal device of the anode conductive device; the anode conductive connection side vertical plates (6) are provided with bolt connection holes, through which the anode fastening conductive vertical plates (7) and the anode conductive cross beam (8) of the double anode side clamping type anode conductive metal device can be installed together by fastening bolts (11) and fastening nuts (12).

5. A novel double anode conductive device for aluminum electrolytic cell according to claim 1, characterized in that: Two side clamping anode conductive metal devices are constructed at both ends of a centrally connected conductive metal device and are formed by welding an anode fastening conductive vertical plate (7) and an anode conductive crossbeam (8).

6. A novel double anode conductive device for aluminum electrolytic cell according to claim 1, characterized in that: The anode conductive metal device is constructed by combining conductive metal materials with low resistance and excellent conductive performance; or is produced and processed by a copper-steel composite structure.

7. A novel double anode conductive device for aluminum electrolytic cell according to claim 1, characterized in that: The fastening connection conductive upright plate (7) and the conductive connection upright plate (6) of the anode metal conductive device are constructed using low-carbon steel materials or copper-steel composite structural members.

8. A novel double anode conductive device for aluminum electrolytic cell according to claim 1, characterized in that: An anode conductive concave groove (9) is arranged on the top of the anode carbon block (10); and is configured correspondingly to an anode conductive cross beam (8) at the bottom of the anode conductive metal device.

9. A novel double anode conductive device for aluminum electrolytic cell according to claim 1, characterized in that: When the anode conductive device is assembled as a whole, firstly, the two anode conductive cross beams (8) at the bottom of the double anode central connection conductive metal device are assembled into the inner anode conductive concave grooves (9) on the upper parts of the two anode carbon blocks (10) arranged symmetrically on the left and right, and then the anode conductive cross beams (8) arranged at the bottom of the fastening conductive vertical plate (7) are assembled into the anode conductive concave grooves (9) on the outer sides of the upper parts of the anode carbon blocks (10), and then the fastening conductive vertical plate (7) and the conductive vertical plate (7) are fastened with fastening bolts (11) and fastening nuts (12). The connecting upright plate (6) is screwed together to form a structural connection, so that the anode conductive cross beam (8) constructed at the bottom of the fastened conductive upright plate (7) and the anode conductive cross beam (8) arranged at the bottom of the anode conductive shunt plate generate a lateral extrusion and fit friction force on the anode conductive boss between the two conductive concave grooves on the upper part of the anode carbon block (10), and finally an anode conductive metal device and two anode carbon blocks are combined and constructed together to form an aluminum electrolytic cell double anode conductive device with an anode metal conductive device on the upper part and two anode carbon blocks on the lower part.

10. A novel double anode conductive device for aluminum electrolytic cell according to claim 1, characterized in that: Under the technical conditions of electrolytic thermal working conditions, the anode conductive device can utilize the physical characteristic that the thermal expansion coefficient of the anode conductive cross beam metal is greater than the thermal expansion coefficient of the carbon anode material, so that the iron-carbon bonding contact interface between the anode conductive cross beam (8) and the anode carbon block (10) of the anode conductive metal device produces a dense and firm conductive connection and a high-strength structural connection, that is, the width deviation value of the assembly gap between the anode conductive cross beam (8) and the anode conductive concave groove (9) is smaller than the width value of the linear thermal expansion of the anode conductive cross beam (8) under electrolytic thermal working conditions.

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