Aluminum electrolysis diversion trench and auxiliary device

Abstract

The utility model provides an aluminum electrolysis diversion trench and an auxiliary device. The aluminum electrolysis diversion trench comprises a trench shell and an interlayer arranged on the inner surface of the trench shell, the interlayer is lower than the trench shell, so that a step is formed between the interlayer and the trench shell, a heat preservation layer is arranged on the inner surface of the interlayer, and the step is covered with the heat preservation layer; the interlayer comprises a ceramic fiber plate, heat preservation cotton and alumina powder which are sequentially arranged, the ceramic fiber plate is arranged on the inner surface of the tank shell, and the heat preservation layer is arranged on the inner surface of the alumina powder. According to the aluminum electrolysis diversion trench, the interlayer and the heat preservation layer are sequentially arranged on the inner surface of the trench shell, the problem that the temperature of electrolyte and molten aluminum flowing into an electrolytic cell is sharply reduced is better solved through the heat preservation characteristic of the heat preservation layer, rapid starting and production of the electrolytic cell are ensured, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum electrolysis smelting, in particular to an aluminum electrolysis guide trough and an auxiliary device. Background Art

[0002] With the increasingly fierce competition in the aluminum electrolysis industry and the continuous improvement of energy consumption indicators for high-energy-consuming enterprises, rapid start-up of electrolytic cells has become an inevitable trend for aluminum electrolysis enterprises to achieve energy conservation, reduce production costs and ensure their own sustainable development.

[0003] The electrolytic cell startup operation generally involves pouring electrolyte into the electrolytic cell through a diversion trough. When starting the electrolytic cell, the process is required to be completed quickly to ensure that the temperature of the electrolyte poured in is not too low and that the fluidity is good, which is conducive to the smooth startup of the electrolytic cell.

[0004] Existing guide troughs, such as patent publication number CN218561110U, are an auxiliary device for removing a large amount of liquid electrolyte in aluminum electrolysis production. The guide trough is made of steel plates, which makes the thermal insulation effect in the trough poor, causing the temperature of the electrolyte liquid flowing into the electrolytic cell to drop sharply and the fluidity to deteriorate, which brings difficulties to production operations. Utility Model Content

[0005] The utility model aims to provide an aluminum electrolysis guide trough and an auxiliary device to ensure that the electrolytic cell is quickly started and enters production, thereby improving production efficiency.

[0006] The technical solution of the utility model is: an aluminum electrolysis guide trough, comprising a trough shell and an interlayer arranged on the inner surface of the trough shell, the height of the interlayer is lower than the height of the trough shell, so that a step is formed between the interlayer and the trough shell, and an insulation layer is arranged on the inner surface of the interlayer, and the insulation layer covers the step; the interlayer comprises a ceramic fiber board, insulation cotton and alumina powder arranged in sequence, the ceramic fiber board is arranged on the inner surface of the trough shell, and the insulation layer is arranged on the inner surface of the alumina powder.

[0007] Preferably, the tank shell includes two side plates arranged at intervals, a sealing plate connected to one end of the two side plates, and a bottom plate connected between the two side plates and the bottom of the sealing plate. A liquid flow outlet is formed at one end of the tank shell away from the sealing plate, and the ceramic fiber board is arranged on the inner surfaces of the side plates, the sealing plate and the bottom plate.

[0008] Preferably, the side plate is a trapezoidal plate, and the height of one end thereof connected to the sealing plate is higher than the height of the other end thereof forming the liquid flow outlet.

[0009] Preferably, the thermal insulation layer is a silicate refractory material layer, and the thickness of the thermal insulation layer is 35-40 mm.

[0010] Preferably, the ceramic fiberboard is a single-layer structure with a thickness of 10 mm.

[0011] Preferably, the thermal insulation cotton is aluminum silicate thermal insulation cotton, and the thickness of the thermal insulation cotton is 25-30 mm.

[0012] Preferably, the height H of the step is 30 mm.

[0013] The utility model also provides an aluminum electrolysis auxiliary device, comprising a base and the aluminum electrolysis guide trough installed on the base.

[0014] Compared with the related art, the beneficial effects of the utility model are:

[0015] 1. The aluminum electrolysis flow channel is provided with an interlayer and an insulation layer on the inner surface of the channel shell in sequence. The insulation characteristics of the insulation layer can better solve the problem of a sharp drop in the temperature of the electrolyte and aluminum liquid flowing into the electrolytic cell, ensure the rapid start-up and production of the electrolytic cell, and improve production efficiency;

[0016] Second, the interlayer is provided with heat-insulating cotton to further improve the heat-insulating performance of the guide groove, so that the electrolyte liquid and aluminum liquid in the guide groove are kept at the original temperature as much as possible, and then flow into the electrolytic cell from the liquid flow port to ensure the rapid start-up of the electrolytic cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of the aluminum electrolysis guide trough provided by the utility model;

[0018] Figure 2 A schematic diagram of the material layer structure of the aluminum electrolysis guide trough provided by the utility model;

[0019] Figure 3 A schematic cross-sectional view of an aluminum electrolysis flow guide trough provided by the utility model;

[0020] Figure 4 This is a schematic structural diagram of the aluminum electrolysis auxiliary device provided by the utility model.

[0021] In the attached drawings: 1. tank shell; 11. side plate; 12. sealing plate; 13. bottom plate; 14. liquid flow port; 2. interlayer; 21. ceramic fiber board; 22. thermal insulation cotton; 23. alumina powder; 3. step; 4. thermal insulation layer; 5. base; 6. aluminum electrolysis guide trough. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following text, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0023] like Figure 1-Figure 3 As shown, an aluminum electrolysis guide trough 6 provided in this embodiment includes a trough shell 1, an interlayer 2, a step 3, an insulation layer 4 and a base 5.

[0024] The tank shell 1 includes two spaced-apart side plates 11, a sealing plate 12 connected to one end of the two side plates 11, and a bottom plate 13 connected between the two side plates 11 and the bottom of the sealing plate 12. The end of the tank shell 1 away from the sealing plate 12 forms a liquid flow port 14. The side plate 11 is a trapezoidal plate, and the height of one end connected to the sealing plate 12 is higher than the height of the other end forming the liquid flow port 14.

[0025] like Figure 2 As shown, the tank shell 1 is a trapezoid with a larger upper part and a smaller lower part in a top projection plane, that is, the length of the sealing plate 11 is greater than the horizontal diameter of the liquid flow port 14, so that the liquid inside the guide tank 1 flows out to the liquid flow port 14 in a concentrated manner.

[0026] like Figure 3 As shown, the height of the interlayer 2 is lower than that of the tank shell 1, so that a step 3 is formed between the interlayer 2 and the tank shell 1, and the height of the step 3 is H=30mm. An insulation layer 4 is provided on the inner surface of the interlayer 2, and the insulation layer 4 covers the step 3.

[0027] like Figure 2 As shown, the interlayer 2 includes a ceramic fiber board 21, a thermal insulation cotton 22 and an alumina powder 23 arranged in sequence. The ceramic fiber board 21 is arranged on the inner surface of the side plate 11, the sealing plate 12 and the bottom plate 13. The thermal insulation layer 4 is arranged on the inner surface of the alumina powder 23.

[0028] The insulation layer 4 can be made of HF2 high-strength anti-seepage castable produced by Zhengzhou Xinxing Thermal Furnace Design and Installation Co., Ltd., and integrally cast on the inner surface of the step 3 and the alumina powder 23. Alternatively, the insulation layer 4 can be made of silicate refractory material. The thickness of the insulation layer 4 is 35-40 mm.

[0029] The ceramic fiber board 21 is a single-layer structure with a thickness of 10 mm. The thermal insulation cotton 22 is aluminum silicate thermal insulation cotton with a thickness of 25-30 mm.

[0030] like Figure 4As shown, the utility model also provides an aluminum electrolysis auxiliary device, including a base 5 and the aluminum electrolysis guide trough 6 installed on the base 5. The aluminum electrolysis guide trough 6 installed on the base 5 is an inclined structure, that is, one end of the liquid flow port 14 is lower than one end of the sealing plate 12, so as to facilitate the liquid to flow into the electrolytic cell.

[0031] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An aluminum electrolysis flow channel, comprising a channel shell (1), characterized in that: It also includes an interlayer (2) arranged on the inner surface of the tank shell (1), the height of the interlayer (2) is lower than the height of the tank shell (1), so that a step (3) is formed between the interlayer (2) and the tank shell (1), and a thermal insulation layer (4) is arranged on the inner surface of the interlayer (2), and the thermal insulation layer (4) covers the step (3); the interlayer (2) includes a ceramic fiber board (21), thermal insulation cotton (22) and aluminum oxide powder (23) arranged in sequence, the ceramic fiber board (21) is arranged on the inner surface of the tank shell (1), and the thermal insulation layer (4) is arranged on the inner surface of the aluminum oxide powder (23).

2. The aluminum electrolysis flow channel according to claim 1, characterized in that: The tank shell (1) comprises two side plates (11) arranged at intervals, a sealing plate (12) connected to one end of the two side plates (11), and a bottom plate (13) connected between the two side plates (11) and the bottom of the sealing plate (12); a liquid flow outlet (14) is formed at one end of the tank shell (1) away from the sealing plate (12); and the ceramic fiber board (21) is arranged on the inner surfaces of the side plates (11), the sealing plate (12) and the bottom plate (13).

3. The aluminum electrolysis flow channel according to claim 2, characterized in that: The side plate (11) is a trapezoidal plate, and the height of one end thereof connected to the sealing plate (12) is higher than the height of the other end thereof forming the liquid flow outlet (14).

4. The aluminum electrolysis flow channel according to claim 1, characterized in that: The thermal insulation layer (4) is a silicate refractory material layer, and the thickness of the thermal insulation layer (4) is 35-40 mm.

5. The aluminum electrolysis flow channel according to claim 1, characterized in that: The ceramic fiber board (21) is a single-layer structure with a thickness of 10 mm.

6. The aluminum electrolysis flow channel according to claim 1, characterized in that: The thermal insulation cotton (22) is aluminum silicate thermal insulation cotton, and the thickness of the thermal insulation cotton (22) is 25-30 mm.

7. The aluminum electrolysis flow channel according to claim 1, characterized in that: The height H of the step (3) is 30 mm.

8. An aluminum electrolysis auxiliary device, comprising a base (5), characterized in that: It also includes an aluminum electrolysis guide trough as described in any one of claims 1 to 7 mounted on the base (5).

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