Anti-flying discharging device for aluminum oxide of electrolytic cell

Abstract

The utility model discloses an anti-flying blanking device for aluminum oxide of an electrolytic cell, which aims at solving the technical problems that the aluminum oxide of the existing electrolytic cell is easy to partially escape during blanking, so that raw materials cannot be used up, and the stability of the electrolytic cell is influenced. The blanking device comprises a mounting part and a blanking part, the blanking part is located at the bottom end of the mounting part, the mounting part is of a cylindrical structure matched with a blanking pipe of the electrolytic cell, a mounting opening is formed in the inner side face of the mounting part, a mounting ring is arranged on the upper portion of the mounting part and is of an annular plate-shaped structure, an upper fixing screw hole is formed in the mounting ring, and a lower fixing screw hole is formed in the lower portion of the mounting ring. The discharging part is of a funnel-shaped structure, and a discharging nozzle is arranged on the bottom face of the discharging part. The aluminum oxide discharging device has the advantages of effectively preventing aluminum oxide from flying during discharging, improving the utilization rate of raw materials and guaranteeing stable operation of the electrolytic cell.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic aluminum technology, specifically to an anti-flying feeding device for alumina in an electrolytic cell. Background Technology

[0002] Currently, during the process of adding alumina powder to the upper alumina silo of the electrolytic cell in an aluminum electrolytic plant using a constant-volume feeder, the alumina powder discharged from the silo is relatively dispersed due to the sloping flat bottom plate of the powder silo being relatively high above the flame opening on the shell surface. During its descent, firstly, some alumina powder is drawn away by the negative pressure of the flue gas purification system; secondly, the hot air discharged from the flame opening reaches temperatures exceeding 900 degrees Celsius, with high pressure and high flow rate, causing the alumina powder to be back-blown and dispersed when it falls above the flame opening, preventing it from entering the flame opening. This results in significant alumina powder being scattered above the flame opening, and a portion of the alumina powder cannot be effectively added into the molten pool of the electrolytic cell.

[0003] The aforementioned problems result in low alumina conveying and feeding efficiency in the purification system, increasing the additional costs of electrolytic aluminum production. Furthermore, since the actual amount of material added to the molten pool of the electrolytic cell is less than the theoretical amount each time, the actual yield is low, affecting the control of alumina concentration in the electrolytic cell, easily causing the anode effect, increasing the instability of the electrolytic cell operation, and increasing the energy consumption per ton of aluminum. Utility Model Content

[0004] This invention provides an anti-flying alumina feeding device for electrolytic cells, which solves the technical problem that some alumina easily escapes during feeding in existing electrolytic cells, resulting in the incomplete use of raw materials and affecting the stability of the electrolytic cell.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] Design a device for preventing alumina from flying away during electrolytic cell feeding. The device is installed at the bottom of the feeding pipe of the electrolytic cell and includes an installation part and a feeding part. The feeding part is located at the bottom of the installation part. The installation part is a cylindrical structure that matches the feeding pipe of the electrolytic cell. The inner side of the installation part is provided with an installation opening. The upper part of the installation part is provided with an installation ring. The installation ring is a ring-shaped plate structure with upper fixing screw holes. The feeding part is a funnel-shaped structure with a feeding nozzle on the bottom surface.

[0007] Furthermore, the front side of the mounting part and the unloading part is provided with a strip-shaped opening, which extends to the bottom end of the unloading part.

[0008] Furthermore, the installation part is provided with a feeding guide plate, which is located on both sides above the feeding nozzle and tilted downwards.

[0009] Furthermore, the electrolytic cell feed pipe has a tapered structure, and its front surface is provided with a discharge opening, with the feed guide plate located inside the discharge opening.

[0010] Furthermore, the lower two sides of the mounting part are provided with lower fixing screw holes, and the upper fixing screw holes and lower fixing screw holes are used to fix the mounting part to the electrolytic cell feed pipe by screws.

[0011] Furthermore, horizontal mounting tubes are provided on both sides of the top of the mounting part for lifting the feeding device for installation.

[0012] Furthermore, the mounting part and the unloading part are made of stainless steel and are integrally formed.

[0013] Furthermore, the width of the mounting part gradually increases from top to bottom, and the discharge nozzle is a cylindrical tubular structure.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] This invention can prevent alumina powder from being drawn away by the negative pressure of the flue during its fall and reduce the occurrence of material backflow from the molten pool shell of the electrolytic cell, thereby improving the alumina conveying and feeding efficiency of the purification system and saving additional costs in electrolytic aluminum production; it also enables alumina powder to be effectively added into the molten pool to participate in the reaction, reduces the anode effect, increases the life of the electrolytic cell, reduces the consumption per ton of electrolytic aluminum, and ultimately achieves the goal of energy saving and consumption reduction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the rear side structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the front side structure of this utility model.

[0018] Figure 3 This is a front view schematic diagram of the present utility model.

[0019] Figure 4 This is a right-side view of the present invention.

[0020] Figure 5 This is a top view of the present invention.

[0021] Figure 6 This is a schematic diagram of the structure of the electrolytic cell feed pipe in this utility model.

[0022] In the figure, there is an installation part 1, a feeding part 2, an installation opening 3, an installation ring 4, an upper fixing screw hole 5, a feeding nozzle 6, a strip-shaped opening 7, a feeding guide plate 8, a lower fixing screw hole 9, an electrolytic cell feeding pipe 10, and a discharge opening 11. Detailed Implementation

[0023] The specific embodiments of this utility model will be described below with reference to the accompanying drawings and examples. However, the following examples are only used to illustrate this utility model in detail and do not limit the scope of this utility model in any way.

[0024] Example 1: An alumina feeding device for an electrolytic cell, see [link to example]. Figures 1 to 5 The device includes an installation section 1 and a feeding section 2. The feeding section 2 is located at the bottom of the installation section 1. The installation section 1 is a cylindrical structure that matches the feeding pipe 10 of the electrolytic cell. The inner side of the installation section 1 is removed to form an installation opening 3. An installation ring 4 is provided at the top of the installation section 1. The installation ring 4 is an annular plate structure. There are four upper fixing screw holes 5 on both sides of the installation ring 4, two on each side. The feeding section 2 is a funnel-shaped structure. A feeding nozzle 6 is provided on the bottom surface of the feeding section 2. The feeding nozzle 6 is a cylindrical tubular structure.

[0025] Vertical slots 7 are provided on the front sides of the mounting section 1 and the feeding section 2, extending to the bottom of the feeding section 2 to prevent material blockage and ensure smooth and dust-free feeding. Feeding guide plates 8 are provided inside the mounting section 1, symmetrically positioned on both sides above the feeding nozzle, and inclined downwards towards the center line. Lower fixing screw holes 9 are provided on both sides of the lower part of the mounting section 1. The upper fixing screw holes 5 and lower fixing screw holes 9 are used to fix the mounting section 1 to the electrolytic cell feeding pipe 10 using screws. Horizontal mounting pipes 11 are provided on both sides of the top of the mounting section 1 to facilitate lifting the feeding device for installation.

[0026] See Electrolytic Cell Feed Pipe 10 Figure 6 The device has a tapered structure with a discharge opening 11 on its front surface, and a discharge guide plate 8 is located inside the discharge opening 11. The mounting part 1 and the discharge part 2 are made of stainless steel and are integrally formed. During installation, the device is lifted using the mounting tube 11 and fitted onto the bottom of the electrolytic cell discharge pipe 10. Screws are installed in the upper fixing screw holes 5 and the lower fixing screw holes 9 to abut against the electrolytic cell discharge pipe 10 for fixation. To increase stability, a mounting block can be fixed to the back of the electrolytic cell discharge pipe 10, and a mounting ring 4 is tightly fastened to the mounting block. A triangular cut can be provided on the mounting ring 4 to avoid obstructions during installation. The width of the mounting part 1 gradually increases from top to bottom to ensure that all powder enters the discharge part 2 and prevents spillage.

[0027] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. However, those skilled in the art will understand that, without departing from the spirit of the present invention, various specific parameters in the above embodiments can be changed to form multiple specific embodiments, all of which are common variations of the present invention, and will not be described in detail here.

Claims

1. A device for preventing alumina from flying away during electrolytic cell feeding, installed at the bottom of the feeding pipe of the electrolytic cell, characterized in that, It includes an installation section and a feeding section. The feeding section is located at the bottom of the installation section. The installation section is a cylindrical structure that matches the feeding pipe of the electrolytic cell. The inner side of the installation section is provided with an installation opening. The upper part of the installation section is provided with an installation ring. The installation ring is a ring-shaped plate structure with an upper fixing screw hole. The feeding section is a funnel-shaped structure with a feeding nozzle on the bottom surface.

2. The anti-flying feeding device for alumina in an electrolytic cell according to claim 1, characterized in that, The front side of the mounting part and the unloading part is provided with a strip-shaped opening, which extends to the bottom end of the unloading part.

3. The electrolytic cell alumina anti-flying feeding device according to claim 1, characterized in that, The installation part is equipped with a feeding guide plate, which is located on both sides above the feeding nozzle and tilted downwards.

4. The electrolytic cell alumina anti-flying feeding device according to claim 3, characterized in that, The electrolytic cell feed pipe has a tapered structure, and its front surface is provided with a discharge opening. The feed guide plate is located inside the discharge opening.

5. The anti-flying feeding device for alumina in an electrolytic cell according to claim 1, characterized in that, The lower two sides of the mounting part are provided with lower fixing screw holes, and the upper fixing screw holes and lower fixing screw holes are used to fix the mounting part to the electrolytic cell feed pipe by screws.

6. The anti-flying feeding device for alumina in an electrolytic cell according to claim 1, characterized in that, The top two sides of the mounting section are provided with horizontal mounting tubes for lifting the feeding device for installation.

7. The electrolytic cell alumina anti-flying feeding device according to claim 1, characterized in that, The mounting section and the unloading section are made of stainless steel and are integrally formed.

8. The anti-flying feeding device for alumina in an electrolytic cell according to claim 1, characterized in that, The width of the mounting part gradually increases from top to bottom, and the feeding nozzle is a cylindrical tubular structure.

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