A large aluminum electrolytic cell cathode coke particle spreading device

Abstract

The utility model discloses a large -scale aluminum electrolytic cell cathode coke particle spreading device belongs to aluminum electrolytic cell calcination technical field, including the material placement platform frame, the symmetry of material placement platform frame's bottom is provided with a plurality of adjustable height support leg, is laid with the material placement platform unloading hole plate on the material placement platform frame, and the top of material placement platform frame is provided with the unloading trolley, the unloading trolley includes coke particle bin, and the bottom of coke particle bin is equidistant and is provided with a plurality of coke particle bin unloading port, and the symmetry of between coke particle bin unloading port is provided with the flow guide plate, the outside wall of unloading trolley is provided with a plurality of pulley of cooperation with material placement platform frame. The utility model discloses the coke particle bin unloading port of unloading trolley bottom through accurate control coke particle distribution, ensures the spreading flatness, and optimizes the anode conductivity.

Description

Technical Field

[0001] This utility model relates to the field of aluminum electrolytic cell roasting technology, and in particular to a large-scale aluminum electrolytic cell cathode coke particle spreading device. Background Technology

[0002] In the aluminum electrolysis roasting process, the coke granule roasting method requires laying a 20-25mm thick layer of coke granules on the cathode surface to form conductive channels. The quality of this laying directly affects the roasting uniformity and start-up performance of the electrolytic cell. Existing large electrolytic cells use a manual spreading method with a metal frame and perforated phenolic resin boards, which has the following drawbacks: manual operation makes it difficult to control the flatness of the coke granule spreading, easily leading to local accumulation or missed areas; when the anode falls and compresses, the coke granules cannot diffuse evenly, resulting in poor contact between the anode and the coke granules, increased conductivity, and affecting the uniform heat conduction during roasting; simultaneously, the metal frame itself occupies the effective spreading area on the cathode surface, and the coverage area of ​​a single frame is small, requiring frequent repositioning operations, resulting in low spreading efficiency and high labor intensity. Therefore, there is an urgent need to improve the quality and efficiency of coke granule spreading through structural improvements. Based on this, this utility model proposes a coke granule spreading device for the cathode of a large aluminum electrolytic cell. Utility Model Content

[0003] The purpose of this invention is to provide a large-scale aluminum electrolysis cell cathode coke particle spreading device to solve the problems mentioned above.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model discloses a large-scale aluminum electrolytic cell cathode coke particle spreading device, comprising a spreading platform frame, with several adjustable height support legs symmetrically arranged at the bottom of the spreading platform frame, a spreading platform discharge plate laid on the spreading platform frame, and a discharge trolley arranged above the spreading platform frame; the discharge trolley includes a coke particle bin, with several coke particle bin discharge ports evenly spaced at the bottom of the coke particle bin, and guide plates symmetrically arranged between the coke particle bin discharge ports; several pulleys that cooperate with the spreading platform frame are symmetrically arranged on the outer side wall of the discharge trolley.

[0006] Furthermore, the material feeding platform has several holes with a diameter of 20mm at equal intervals on its feeding hole plate.

[0007] Furthermore, the distance between adjacent holes is 50 mm.

[0008] Furthermore, the material feeding plate of the material spreading platform is made of an insulating board with a thickness of 5mm.

[0009] Furthermore, several bubble levels are symmetrically arranged on the material spreading platform frame.

[0010] Furthermore, the guide plate has a V-shaped structure.

[0011] Furthermore, scrapers are symmetrically arranged on the front and rear sides of the bottom of the unloading trolley.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0013] This utility model discloses a large-scale aluminum electrolytic cell cathode coke particle spreading device. Through the cooperation of the feeding trolley and the feeding orifice plate of the spreading platform, a mechanized spreading device is realized, which reduces the intensity of manual labor and improves the efficiency of operation. The coke particle hopper at the bottom of the feeding trolley ensures the flatness of the spreading by precisely controlling the distribution of coke particles and optimizes the conductivity of the anode. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a top view of the material laying platform;

[0016] Figure 2 This is a side view of the unloading trolley;

[0017] Figure 3 This is a structural diagram of the deflector plate;

[0018] Figure 4 This is a schematic diagram of the unloading trolley structure;

[0019] Figure 5 This is a structural diagram showing the installation location of the scraper.

[0020] Explanation of reference numerals in the attached drawings: 1. Material unloading trolley; 2. Material spreading platform frame; 3. Bubble level; 4. Material spreading platform unloading orifice plate; 5. Coke pellet hopper; 6. Pulley; 7. Scraper; 8. Adjustable height support leg; 9. Coke pellet hopper discharge port; 10. Guide plate. Detailed Implementation

[0021] like Figure 1-5As shown, a large-scale aluminum electrolytic cell cathode coke particle spreading device includes a spreading platform frame 2. The spreading platform frame 2 is composed of two rectangular frames welded from 30*30 angle iron, forming a dual-station spreading platform that can simultaneously cover the cathodes on both sides A and B of the electrolytic cell. The dual-station spreading platform operates simultaneously, significantly improving efficiency compared to traditional single-cathode spreading. Several adjustable height support legs 8 are symmetrically installed at the bottom of the spreading platform frame 2. The adjustable height support legs 8 adopt a bolt-type adjustable structure, and the height and level of the spreading platform frame 2 can be adjusted by rotating the bolts. A spreading platform discharge plate 4 is laid on the spreading platform frame 2. The spreading platform discharge plate 4 is made of a 5mm thick insulating board. Several holes with a diameter of 20mm are evenly spaced on the spreading platform discharge plate 4 to ensure uniform coke particle falling; the distance between adjacent holes is 50mm.

[0022] A material feeding trolley 1 is installed above the material spreading platform frame 2. The material feeding trolley 1 includes a coke particle bin 5, which stores coke particles for spreading. Several coke particle discharge ports 9 are equidistantly spaced at the bottom of the coke particle bin 5. Guide plates 10 are symmetrically installed between the discharge ports 9. The guide plates 10 are located at the bottom of the coke particle bin 5 and have a V-shaped structure, with their tips pointing towards the trolley's forward direction, guiding the coke particles precisely into the discharge ports to reduce material accumulation on the board. Several pulleys 6 are symmetrically installed on the outer wall of the material spreading platform frame 2, cooperating with it. The pulleys 6 can travel along the track on the top surface of the material spreading platform frame 2.

[0023] Several bubble levels 3 are symmetrically installed on the material spreading platform frame 2. The bubble levels 3 are installed at four positions on the material spreading platform frame 2 to monitor the levelness of the platform in real time.

[0024] Scrapers 7 are symmetrically installed on the front and rear sides of the bottom of the feeding trolley 1. The scrapers 7 are installed below the coke granule hopper 5 in the feeding trolley 1, and the installation position is as follows: Figure 5 As shown, the scraper 7 is made of flexible felt and is in contact with the material spreading platform frame 2. When the material spreading trolley moves and spreads the material, the excess or missed coke particles on the material spreading platform frame 2 will be scraped into the material spreading platform discharge hole 4 by the scraper 7.

[0025] The operation process of this utility model is as follows:

[0026] First, place the material spreading platform frame 2 above the cathode of the electrolytic cell, adjust the adjustable height support legs 8, and ensure that the platform is level (level error ≤ 1mm) using the bubble level 3;

[0027] Then, apply lubricant to the pulleys 6 of the unloading trolley 1, place it on the track at the top of the platform frame 2, and check the smoothness of movement.

[0028] Finally, the coke particle laying operation begins:

[0029] (1) Fill the coke pellet bin 5 with coke pellets, so that its height does not exceed 2 / 3 of the depth of the coke pellet bin 5;

[0030] (2) The operator pushes the feeding trolley 1 to move back and forth along the feeding platform frame 2 at a speed of 0.5-1m / s. The coke particles fall into the feeding plate 4 of the feeding platform through the feeding port 9 of the coke particle bin, and are guided into the holes of the feeding plate 4 of the feeding platform under the action of the guide plate 10. Excess or missed coke particles on the feeding platform frame 2 will be scraped into the feeding holes 4 of the feeding platform by the scraper 7, forming a uniform spread. This process is mechanized to reduce manual intervention and labor intensity. At the same time, it can achieve a uniform coke particle layer thickness (20-25mm) and a flatness error ≤2mm. When the anode contacts, the coke particles are evenly diffused, and the conductivity is more uniform.

[0031] (3) When the height of coke particles in the coke particle bin 5 is lower than the upper surface of the coke particle bin discharge port 9, paving is suspended and materials are replenished.

[0032] 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 large-scale aluminum electrolytic cell cathode coke particle spreading device, characterized in that: The system includes a material spreading platform frame (2), with several adjustable height support legs (8) symmetrically arranged at the bottom of the material spreading platform frame (2), a material spreading platform discharge hole plate (4) laid on the material spreading platform frame (2), and a discharge trolley (1) arranged above the material spreading platform frame (2); the discharge trolley (1) includes a coke pellet hopper (5), with several coke pellet hopper discharge ports (9) equidistantly opened at the bottom of the coke pellet hopper (5), and guide plates (10) symmetrically arranged between the coke pellet hopper discharge ports (9); and several pulleys (6) symmetrically arranged on the outer side wall of the discharge trolley (1) to cooperate with the material spreading platform frame (2).

2. The large-scale aluminum electrolytic cell cathode coke particle spreading device according to claim 1, characterized in that: The material feeding platform has several holes with a diameter of 20mm at equal intervals on the feeding hole plate (4).

3. The large-scale aluminum electrolytic cell cathode coke particle spreading device according to claim 2, characterized in that: The distance between adjacent holes is 50 mm.

4. The large-scale aluminum electrolytic cell cathode coke particle spreading device according to claim 1, characterized in that: The material feeding plate (4) of the material spreading platform is made of an insulating plate with a thickness of 5mm.

5. The large-scale aluminum electrolytic cell cathode coke particle spreading device according to claim 1, characterized in that: Several bubble levels (3) are symmetrically arranged on the material spreading platform frame (2).

6. The large-scale aluminum electrolytic cell cathode coke particle spreading device according to claim 1, characterized in that: The guide plate (10) has a V-shaped structure.

7. The large-scale aluminum electrolytic cell cathode coke particle spreading device according to claim 1, characterized in that: The bottom of the unloading trolley (1) is symmetrically equipped with scrapers (7) on both the front and rear sides.

Images