Aluminum absorption structure capable of reducing electrolyte entering aluminum discharging two-man ladle

Abstract

The aluminum suction structure capable of reducing the electrolyte entering the aluminum discharge ladle comprises a first aluminum discharge ladle straight pipe, the bottom face of the first aluminum discharge ladle straight pipe is fixedly connected with a second aluminum discharge ladle straight pipe through a connecting flange, the connecting flange is fixed through a connecting bolt, and the bottom end of the second aluminum discharge ladle straight pipe is connected with a protective sleeve in a sleeved mode. And the pipe diameter of the second aluminum discharging two-man ladle straight pipe is kept consistent or is gradually reduced from top to bottom. The device has the advantages of being reasonable in structural design, convenient and fast to operate, easy to machine and manufacture, low in machining and manufacturing cost and capable of effectively reducing electrolyte entering the aluminum discharging ladle, reducing ladle cleaning frequency, reducing primary aluminum inclusion, improving primary aluminum purity and reducing labor intensity of workers.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum liquid extraction equipment in aluminum electrolysis production, specifically an aluminum extraction structure that reduces the entry of electrolyte into the aluminum extraction ladle. Background Technology

[0002] The aluminum tapping ladle is a crucial piece of equipment used in aluminum electrolysis workshops. Its main function is to extract molten aluminum from the electrolytic cell and transfer it to the foundry or other locations. The principle is as follows: through vacuum and the action of an ejector, the molten aluminum from the electrolytic cell is drawn into the ladle, and then transferred to the other location. This process involves the coordinated operation of several key components, including the aluminum suction pipe, the ejector, and the transmission mechanism. During operation, it is also necessary to carefully determine the aluminum extraction rate and the extraction cycle to ensure smooth production.

[0003] In the existing 240kA series electrolysis operation area, due to the low electrolyte temperature and high electrolyte viscosity, some electrolyte enters the aluminum outlet tube when it enters the lower end of the straight tube of the aluminum outlet lifting ladle. When the ladle is lifting aluminum, the electrolyte enters the ladle through the aluminum outlet tube. Some electrolyte is adsorbed on the tube wall and ladle wall, which can easily cause blockage of the aluminum outlet tube and increase the difficulty of cleaning the ladle, increase labor intensity, and have a significant impact on production efficiency. Some electrolyte enters the aluminum liquid, affecting the purity of the aluminum liquid and increasing the secondary oxidation of aluminum.

[0004] To address the aforementioned technical problems, a structure needs to be designed to solve the technical issues encountered during the aluminum unloading and lifting process. Utility Model Content

[0005] The purpose of this utility model is to provide an aluminum absorption structure that has a reasonable structural design, is easy to operate, is easy to process and manufacture, has low processing and manufacturing costs, can effectively reduce the entry of electrolyte into the aluminum ladle, reduce the frequency of ladle cleaning, reduce primary aluminum inclusions, improve the purity of primary aluminum, and reduce the labor intensity of employees.

[0006] This utility model discloses an aluminum suction structure that reduces the entry of electrolyte into the aluminum outlet lifting package. It includes a first aluminum outlet lifting package straight pipe, and a second aluminum outlet lifting package straight pipe is fixedly connected to the bottom surface of the first aluminum outlet lifting package straight pipe through a connecting flange. The connecting flange is fixed by connecting bolts, and a protective sleeve is sleeved on the bottom end of the second aluminum outlet lifting package straight pipe.

[0007] The first and second aluminum ladle straight pipes are fixed together by connecting flanges and bolts, providing high fixing strength and extending their service life. A protective sleeve is fitted to the bottom of the second aluminum ladle straight pipe to protect and seal its end. When the second aluminum ladle straight pipe is inserted into the electrolytic cell to draw molten aluminum, it prevents electrolyte from entering the pipe and subsequently the ladle, reducing the frequency of pipe blockage, improving production efficiency, reducing ladle cleaning frequency, increasing molten aluminum purity, and reducing secondary oxidation during aluminum transportation and casting, thus reducing burn-off. The protective sleeve, made of aluminum, melts within minutes in the electrolyte, preventing electrolyte from entering the second aluminum ladle straight pipe while protecting its end, reducing inclusions in the primary aluminum and improving its purity.

[0008] The diameter of the second aluminum outlet straight pipe remains the same or gradually decreases from top to bottom.

[0009] The second aluminum outlet straight pipe is designed with a uniform diameter and a variable diameter structure, offering two different specifications that operators can choose from based on different working conditions and their personal operating habits.

[0010] The protective sleeve includes a first protective tube, the first protective tube having an isosceles trapezoidal cross-section, and a baffle plate fixedly connected to the bottom surface of the first protective tube.

[0011] The protective sleeve includes a second protective tube, which has a rectangular cross-section and a baffle plate fixedly connected to its bottom surface.

[0012] The baffle has a semi-circular structure.

[0013] Two protective sleeves are provided, allowing selection based on the diameter requirements of the second aluminum outlet straight tube, thus offering wide applicability. The first and second protective sleeves can be fitted together according to different tube diameters. The first or second protective sleeve is fitted onto the bottom end of the second aluminum outlet straight tube. A baffle plate located at the bottom of the first and second protective sleeves can be fixedly connected to the bottom of the second aluminum outlet straight tube, ensuring a sealed end and preventing electrolyte from entering. The electrolyte enters the second aluminum outlet straight pipe and then the aluminum outlet ladle, making operation more convenient. The protective sleeve is made of aluminum, and by utilizing the low melting point of aluminum, the inlet at the bottom of the second aluminum outlet straight pipe is kept closed during the electrolyte layer entry stage. The electrolyte melts within 1 minute after entering the aluminum liquid layer, solving the problems of electrolyte entering the second aluminum outlet straight pipe and the aluminum outlet ladle, and reducing slag inclusions in the aluminum liquid. Each tank reduces electrolyte loss by about 10 kg per day; it can reduce the use of one aluminum outlet straight pipe and one bend pipe per day; and it reduces the frequency and number of cleaning operations.

[0014] The thickness of the protective sleeve is 0.18-0.25cm.

[0015] The beneficial effects of this utility model are:

[0016] 1) The first and second aluminum ladle straight pipes are fixed together by connecting flanges and bolts, ensuring high fixing strength and extending their service life. A protective sleeve is fitted to the bottom of the second aluminum ladle straight pipe to protect and seal its end. When the second aluminum ladle straight pipe is inserted into the electrolytic cell to draw molten aluminum, it prevents electrolyte from entering the pipe and subsequently the ladle, reducing the frequency of pipe blockage, improving production efficiency, reducing ladle cleaning frequency, increasing molten aluminum purity, and reducing secondary oxidation during aluminum transportation and casting, thus reducing burn-off. The protective sleeve, made of aluminum, melts within minutes in the electrolyte, preventing electrolyte from entering the second aluminum ladle straight pipe while protecting its end, reducing inclusions in the primary aluminum and improving its purity.

[0017] 2) The diameter of the second aluminum outlet straight pipe is set to a structure with both a uniform diameter and a variable diameter, with two different specifications that can be selected by the operator according to different working conditions and personal operating habits.

[0018] 3) The protective sleeve is available in two specifications, allowing selection based on the diameter requirements of the second aluminum outlet straight tube, thus offering wide applicability. The first and second protective sleeves can be fitted together according to different tube diameters. The first or second protective sleeve is fitted onto the bottom end of the second aluminum outlet straight tube. A baffle plate located at the bottom of the first and second protective sleeves can be fixedly connected to the bottom of the second aluminum outlet straight tube, ensuring a closed end and preventing electrolyte ingress. The electrolyte enters the second aluminum outlet straight pipe and then into the aluminum outlet ladle, making operation more convenient. The protective sleeve is made of aluminum, and by utilizing the low melting point of aluminum, the inlet at the bottom of the second aluminum outlet straight pipe is kept closed during the electrolyte layer entry stage. It melts within 1 minute upon entering the aluminum liquid layer, solving the problems of electrolyte entering the second aluminum outlet straight pipe and the aluminum outlet ladle, and reducing slag inclusions in the aluminum liquid. Each tank reduces electrolyte loss by approximately 10 kg per day; it reduces the use of one aluminum outlet straight pipe and one bend pipe per day; and it reduces the frequency and number of cleaning operations.

[0019] 4) This aluminum suction structure has a reasonable structural design, is easy to operate, easy to process and manufacture, and has low processing and manufacturing costs. It can effectively reduce the amount of electrolyte entering the aluminum lifting bag, reduce the frequency of bag cleaning, reduce the inclusion of primary aluminum, improve the purity of primary aluminum, and improve the utilization rate of suction tube and lifting bag. It has been put into use and the effect is good. After use, it can reduce the labor intensity of employees and the safety risks of bag cleaning operations. It is safe and reliable, and the effect in practical operation is excellent. It is highly feasible and has long-term economic benefits. It is worth promoting and applying it on a large scale. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the first embodiment of the protective sleeve in this utility model;

[0022] Figure 3 for Figure 2 Side view;

[0023] Figure 4 for Figure 2 Top view;

[0024] Figure 5 This is a schematic diagram of the second embodiment of the protective sleeve in this utility model;

[0025] Figure 6 for Figure 5 Side view;

[0026] Figure 7 for Figure 5 Top view.

[0027] In the diagram: 1. First aluminum outlet straight pipe; 2. Connecting flange; 3. Connecting bolt; 4. Second aluminum outlet straight pipe; 5. Protective sleeve; 501. First protective sleeve; 502. Baffle plate; 503. Second protective sleeve. Detailed Implementation

[0028] Example 1.

[0029] The following will be combined with the appendix Figure 1-4 The present invention will be further described below.

[0030] This utility model includes a first aluminum outlet straight tube 1, a connecting flange 2, a connecting bolt 3, a second aluminum outlet straight tube 4, a protective sleeve 5, a first protective sleeve 501, and a baffle 502. The specific structure includes the first aluminum outlet straight tube 1, the bottom surface of which is fixedly connected to the second aluminum outlet straight tube 4 via the connecting flange 2, the connecting flange 2 being fixed by the connecting bolt 3, and the bottom end of the second aluminum outlet straight tube 4 being fitted with the protective sleeve 5.

[0031] The diameter of the second aluminum outlet straight pipe 4 gradually decreases from top to bottom.

[0032] The protective sleeve 5 includes a first protective sleeve 501, the cross-section of which is an isosceles trapezoidal structure, and a baffle 502 is fixedly connected to the bottom surface of the first protective sleeve 501.

[0033] The baffle 502 has a semi-circular structure.

[0034] The thickness of the protective sleeve 5 is 0.18-0.25cm.

[0035] The protective sleeve 5 has a thickness of 0.18 cm and the aluminum content is required to be ≥99.70%; the height of the first protective sleeve 501 is 300 mm and the height of the baffle 502 is 210 mm.

[0036] Instructions for use: The first aluminum outlet straight pipe 1 and the second aluminum outlet straight pipe 4 are fixed together by the cooperation of the connecting flange 2 and the connecting bolt 3. The first protective sleeve 501 of the protective sleeve 5 is sleeved onto the bottom end of the second aluminum outlet straight pipe 4. The baffle 502 connected to the bottom surface of the first protective sleeve 501 can be fixedly connected to the bottom surface of the second aluminum outlet straight pipe 4, covering the bottom surface of the second aluminum outlet straight pipe 4, so that the end of the second aluminum outlet straight pipe 4 is in a closed state. Then, the second aluminum outlet straight pipe 4 is inserted into the electrolytic cell to draw in the aluminum liquid, preventing the electrolyte from entering the second aluminum outlet straight pipe 4 and then into the aluminum outlet straight pipe. The electrolyte melts within 1 minute after entering the aluminum liquid layer, solving the problem of electrolyte entering the second aluminum outlet straight pipe 4 and the aluminum outlet straight pipe, and reducing slag inclusions in the aluminum liquid.

[0037] Example 2.

[0038] This utility model includes a first aluminum outlet straight tube 1, a connecting flange 2, a connecting bolt 3, a second aluminum outlet straight tube 4, a protective sleeve 5, a baffle 502, and a second protective sleeve 503. The specific structure includes a first aluminum outlet straight tube 1, the bottom surface of which is fixedly connected to a second aluminum outlet straight tube 4 via a connecting flange 2, the connecting flange 2 being fixed by connecting bolts 3, and a protective sleeve 5 fitted onto the bottom end of the second aluminum outlet straight tube 4.

[0039] The diameter of the second aluminum outlet straight pipe 4 remains consistent.

[0040] The protective sleeve 5 includes a second protective sleeve 503, the cross-section of which is rectangular, and a baffle 502 is fixedly connected to the bottom surface of the second protective sleeve 503.

[0041] The baffle 502 has a semi-circular structure.

[0042] The thickness of the protective sleeve 5 is 0.18-0.25cm.

[0043] The protective sleeve 5 has a thickness of 0.18 cm and the aluminum content is required to be ≥99.70%; the height of the first protective sleeve 501 is 300 mm and the height of the baffle 502 is 210 mm.

[0044] Instructions for use: The first aluminum outlet straight pipe 1 and the second aluminum outlet straight pipe 4 are fixed together by the cooperation of the connecting flange 2 and the connecting bolt 3. The first protective sleeve 501 of the protective sleeve 5 is sleeved onto the bottom end of the second aluminum outlet straight pipe 4. The baffle 502 connected to the bottom surface of the first protective sleeve 501 can be fixedly connected to the bottom surface of the second aluminum outlet straight pipe 4, covering the bottom surface of the second aluminum outlet straight pipe 4, so that the end of the second aluminum outlet straight pipe 4 is in a closed state. Then, the second aluminum outlet straight pipe 4 is inserted into the electrolytic cell to draw in the aluminum liquid, preventing the electrolyte from entering the second aluminum outlet straight pipe 4 and then into the aluminum outlet straight pipe. The electrolyte melts within 1 minute after entering the aluminum liquid layer, solving the problem of electrolyte entering the second aluminum outlet straight pipe 4 and the aluminum outlet straight pipe, and reducing slag inclusions in the aluminum liquid.

[0045] The protective sleeve 5 is available in two specifications, which can be selected according to the pipe diameter requirements of the second aluminum lifting straight pipe 4 of the two specifications, making it widely applicable.

Claims

1. An aluminum-absorbing structure that reduces the entry of electrolyte into the aluminum outlet bag, characterized in that: It includes a first aluminum lifting tube (1), and a second aluminum lifting tube (4) is fixedly connected to the bottom surface of the first aluminum lifting tube (1) by a connecting flange (2). The connecting flange (2) is fixed by a connecting bolt (3), and a protective sleeve (5) is fitted to the bottom end of the second aluminum lifting tube (4).

2. The aluminum-absorbing structure for reducing electrolyte entry into the aluminum outlet bag as described in claim 1, characterized in that: The diameter of the second aluminum outlet straight pipe (4) is kept consistent or gradually decreases from top to bottom.

3. The aluminum-absorbing structure for reducing electrolyte entry into the aluminum-lifting package as described in claim 2, characterized in that: The protective sleeve (5) includes a first protective sleeve (501), the cross-section of which is an isosceles trapezoidal structure, and a baffle (502) is fixedly connected to the bottom surface of the first protective sleeve (501).

4. The aluminum-absorbing structure for reducing electrolyte entry into the aluminum outlet bag as described in claim 3, characterized in that: The protective sleeve (5) includes a second protective sleeve (503), the cross-section of which is rectangular, and a baffle (502) is fixedly connected to the bottom surface of which.

5. The aluminum-absorbing structure for reducing electrolyte entry into the aluminum outlet bag as described in claim 4, characterized in that: The baffle (502) has a semi-circular structure.

6. The aluminum-absorbing structure for reducing electrolyte entry into the aluminum-lifting package as described in claim 5, characterized in that: The thickness of the protective sleeve (5) is 0.18-0.25cm.

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