Anti-crusting molding device for aluminum outlet of aluminum electrolysis cell

Abstract

The utility model discloses an aluminum electrolysis cell aluminum outlet anti-crusting molding device which comprises an inclined arc section and a vertical square section, the vertical square section is fixedly arranged at the front end of the inclined arc section, square supporting lugs are fixedly arranged on the two sides of the vertical square section, and through holes are formed in the square supporting lugs. The number of the square supporting lugs is two. And the square supporting lug, the inclined arc section and the vertical square section are integrally formed. In general, the anti-crusting molding device for the aluminum outlet of the aluminum electrolysis cell is ingenious in design and practical in function, and effectively solves the problems that the existing manual crust breaking operation is high in labor intensity, large in spare part consumption of crust breaking equipment, small in hole opening of the crust breaking device for the aluminum outlet of the electrolysis cell, limited in operation level of opening an old crust surface formed for a long time, and required to be manually reexpanded; and certain safety risks exist during operation.

Description

Technical Field

[0001] This utility model relates to the field of aluminum electrolysis technology, and in particular to an anti-shelling and shaping device for the aluminum outlet of an aluminum electrolysis cell. Background Technology

[0002] In aluminum electrolysis production, the aluminum outlet of the electrolytic cell plays a multifaceted role, involving multiple operations such as aluminum liquid extraction, carbon slag removal, electrolyte scooping, two-level measurement, quenching effect monitoring, and observation of cell conditions. All operations must be carried out through the aluminum outlet, and its unobstructed flow is a prerequisite for the smooth operation of all operations; therefore, it should always be kept open.

[0003] However, in actual production, due to the temperature difference between the aluminum outlet and the surrounding environment, when the added Al2O3 and material blocks enter the spark hole, the electrolyte forms a crust due to the temperature drop and continues to grow, eventually leading to the blockage of the aluminum outlet spark hole.

[0004] At this point, manual operation requires repeated hammering and widening of the outlet using drilling tools or shell-breaking equipment. However, the electrolyte and molten aluminum are fluid within the electrolytic cell, and soon a shell will form again, causing the narrowing orifice at the aluminum outlet to become completely blocked. This process is time-consuming and labor-intensive. Furthermore, the temperature at the aluminum outlet reaches approximately 900℃, posing a significant risk of burns and other safety hazards for manual operation. A shell-breaking device at the aluminum outlet of the electrolytic cell replaces manual shell-breaking, reducing labor intensity. However, this device requires frequent manual operation of the shell-breaking cylinder for hammering. Due to limitations in on-site air pressure and cylinder thrust, the hammer head size on the cylinder rod is restricted, resulting in a smaller aluminum outlet opening. This only meets the needs of aluminum tapping, quenching operations, and two-level measurements. If a long-established shell surface is encountered, the shell-breaking device cannot clear the outlet. Additionally, there is a serious problem with the wear and tear of spare parts for the shell-breaking device. When performing carbon slag retrieval and electrolyte scooping operations, due to the size and shape of the tools, it is impossible to enter the aluminum outlet of the shell-breaking device for operation, and manual operation is still required to enlarge the fire hole.

[0005] Therefore, how to develop an anti-shelling molding device for the aluminum outlet of an aluminum electrolysis cell has become an urgent problem for those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide an anti-shelling molding device for the aluminum outlet of an aluminum electrolysis cell, which solves the problem that the fire hole at the aluminum outlet of the electrolysis cell cannot always remain unobstructed.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] This utility model discloses an anti-shelling molding device for the aluminum outlet of an aluminum electrolysis cell, comprising an inclined arc segment and a vertical square segment. The vertical square segment is fixedly disposed at the front end of the inclined arc segment, and square lugs are fixedly disposed on both sides of the vertical square segment. The square lugs are provided with through holes.

[0009] Furthermore, the number of the square lugs is two.

[0010] Furthermore, the square lug, the inclined arc segment, and the vertical square segment are integrally formed.

[0011] Furthermore, the square lugs, the inclined arc segment, and the vertical square segment are made of graphite.

[0012] Furthermore, the tilt angle of the inclined arc segment is 45°.

[0013] Furthermore, the through holes on the square lugs are connected to the top of the electrolytic cell via steel wires.

[0014] Furthermore, the inclined arc segment is parallel to the aluminum suction tube, and the vertical square segment is parallel to the boundary of the electrolytic cell.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] This utility model of an anti-shelling molding device for aluminum electrolysis cell outlets is simple in structure, economical and practical, and can replace manual shelling and shelling devices. It has low production costs and is easy to promote and apply. The entire device is integrally cast from high-temperature resistant and anti-oxidation materials such as graphite, possessing characteristics such as high temperature resistance, anti-oxidation, corrosion resistance, high mechanical strength, and immunity to magnetic fields. It also has no impact on the electrolysis production process and fully meets the requirements of the on-site electrolysis cell operating environment. This device reduces the labor intensity and operational risks for operators, shortens waiting time, and provides greater convenience for production. Furthermore, it keeps the outlet flame hole in a constantly open state, promptly eliminating potential hazards affecting the cell condition and improving the lifespan of the electrolysis cell. In summary, the aluminum electrolysis cell outlet anti-shelling molding device of this utility model is ingeniously designed and practically functional. It effectively solves the problems of high labor intensity, large consumption of spare parts for shelling equipment, small opening of the aluminum electrolysis cell outlet shelling device, limited operation level for old shells formed over a long period of time, and the need for manual re-enlarging of the hole, as well as certain safety risks during operation. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1This is a schematic diagram of the anti-shelling molding device for the aluminum outlet of the aluminum electrolysis cell according to this utility model.

[0019] Explanation of reference numerals in the attached diagram: 1. Inclined arc segment; 2. Vertical square segment; 3. Square lug; 4. Through hole. Detailed Implementation

[0020] like Figure 1 As shown, an anti-shelling molding device for the aluminum outlet of an aluminum electrolysis cell includes an inclined arc segment 1 and a vertical square segment 2. The vertical square segment 2 is fixedly disposed at the front end of the inclined arc segment 1. Square lugs 3 are fixedly disposed on both sides of the vertical square segment 2, and through holes 4 are formed on the square lugs 3. There are two square lugs 3. The square lugs 3, the inclined arc segment 1, and the vertical square segment 2 are integrally formed.

[0021] The square lug 3, the inclined arc segment 1, and the vertical square segment 2 are made of graphite. The inclined angle of the inclined arc segment 1 is 45°. The through hole 4 on the square lug 3 is connected to the top of the electrolytic cell via a steel wire. The inclined arc segment 1 is parallel to the aluminum suction tube, and the vertical square segment 2 is parallel to the boundary of the electrolytic cell.

[0022] This utility model of an anti-shelling molding device for the aluminum outlet of an aluminum electrolysis cell includes an inclined arc section 1, a vertical square section 2, a square lug 3, and a through hole 4. The entire structure is integrally cast from high-temperature resistant and anti-oxidation materials such as graphite. The wall thickness is 15-30mm, the height is 100-120mm, and it is wider at the bottom than at the top. The upper opening allows tools with a diameter of φ<280mm to pass through freely, accommodating the free entry and exit of various operating tools.

[0023] The inclined arc section 1 has an inclination angle of 45°, which is the same as the inclination angle of the aluminum suction pipe on the trolley. During aluminum suction operations, the suction pipe is inserted parallel to the surface, which does not affect the extraction of molten aluminum and does not damage the device. The inclined arc design makes better use of the limited space between the anode carbon blocks, allowing for a larger fixed aluminum outlet flame hole, thus meeting more operational needs.

[0024] The vertical square section 2 is parallel to the boundary of the electrolytic cell, facilitating installation without occupying extra space or interfering with operations. The support lug 3, 50-100mm long, 30-50mm wide, and 15-30mm high, increases the stress area of ​​the anti-crusting device, preventing it from falling into the electrolyte during use. The support lug has an 8mm through-hole 4 in the center, through which a steel wire is threaded to suspend the device and maintain its balance. During initial installation, the aluminum outlet flame hole of the electrolytic cell is relatively large. The steel wire passing through the support lug 3 is connected to the top of the electrolytic cell, suspending the device in a suitable position. As crusts begin to form around the device and grow inwards, the anti-crusting device is firmly fixed, simultaneously blocking crust growth and keeping the aluminum outlet flame hole open.

[0025] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A device for preventing shell formation at the aluminum outlet of an aluminum electrolysis cell, characterized in that: It includes an inclined arc segment (1) and a vertical square segment (2). The vertical square segment (2) is fixedly installed at the front end of the inclined arc segment (1). Square lugs (3) are fixedly installed on both sides of the vertical square segment (2). Through holes (4) are opened on the square lugs (3).

2. The aluminum electrolysis cell outlet anti-shelling molding device according to claim 1, characterized in that: The number of the square lugs (3) is two.

3. The aluminum electrolysis cell outlet anti-shelling molding device according to claim 1, characterized in that: The square lug (3), the inclined arc segment (1), and the vertical square segment (2) are integrally formed.

4. The aluminum electrolysis cell outlet anti-shelling molding device according to claim 1, characterized in that: The square lug (3), the inclined arc segment (1), and the vertical square segment (2) are made of graphite.

5. The aluminum electrolysis cell outlet anti-shelling molding device according to claim 1, characterized in that: The tilt angle of the inclined arc segment (1) is 45°.

6. The aluminum electrolysis cell outlet anti-shelling molding device according to claim 1, characterized in that: The through hole (4) on the square lug (3) is connected to the top of the electrolytic cell by a steel wire.

7. The aluminum electrolysis cell outlet anti-shelling molding device according to claim 5, characterized in that: The inclined arc segment (1) is parallel to the aluminum suction tube, and the vertical square segment (2) is parallel to the boundary of the electrolytic cell.

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