Continuous feeding device for aluminum electrolysis cell and electrolysis cell with same

An aluminum electrolytic cell and electrolytic cell technology, which is applied to the continuous feeding device and field of aluminum electrolytic cell, can solve the problems of alumina concentration fluctuation, flow rate control and large measurement error, and achieve the effect of improving accuracy

Inactive Publication Date: 2013-05-22
HUNAN CHUANGYUAN ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The feeding method has the following disadvantages: a. The feeding method is intermittent feeding, and the concentration of alumina fluctuates significantly.
The disadvantage of this invention is that when the alumina particle size changes, the alumina flow rate and the annular hole
[0028] The linear relationship of dimensions changes, and the flow rate control and metering errors are large

Method used

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  • Continuous feeding device for aluminum electrolysis cell and electrolysis cell with same
  • Continuous feeding device for aluminum electrolysis cell and electrolysis cell with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] A continuous feeding device for an aluminum electrolytic cell, comprising a sleeve 1, a funnel 4 and an upper conveying pipe, the

[0095] The open end of the funnel is fixedly connected to the bottom of the sleeve 1, and the outlet end of the funnel is fixed to one end of the upper delivery pipe 3.

[0096] connect. After the funnel is installed at the bottom of the sleeve, the flow rate of the material to be lowered can be reduced, thereby realizing continuous lowering

[0097] material. The existing feeding method is a large amount of feeding at one time, and because the dissolution rate of the electrolyte to the alumina is not

[0098] Unhappy, the aluminum oxide is not completely dissolved in the electrolyte layer and sinks into the aluminum liquid, but the aluminum liquid cannot dissolve the aluminum oxide,

[0099] This causes a large amount of alumina precipitation to accumulate in the aluminum liquid layer directly below the feeding port, resulting in an inc...

Embodiment 2

[0105] On the basis of Example 1, the delivery pipe 1 can also be improved, and the upper delivery pipe is U

[0106] U-shaped delivery pipe, or V-shaped delivery pipe, there is a feed inlet in the middle of the U-shaped delivery pipe and V-shaped delivery pipe, and the drain

[0107] Open connection at the bottom of the bucket, the two outlets of the U-shaped delivery pipe and the V-shaped delivery pipe can be two discharge outlets at the same time

[0108] Unloading, not only reduces the cost, but also increases the space in the tank, U-shaped delivery pipe and V-shaped delivery pipe can also ensure

[0109] The material is unobstructed. Alumina continuously enters the electrolyte, reducing the fluctuation of alumina concentration in the electrolytic cell,

[0110] Improve current efficiency by 0.4%. At the same time, it can reduce the sedimentation at the bottom of the furnace caused by a large amount of material cutting at one time, and reduce the

[0111] The bottom p...

Embodiment 3

[0113] On the basis of implementing 1 or 2, make the following improvements, the continuous feeding device also includes

[0114] The lower delivery tube is a U-shaped delivery tube, or a V-shaped delivery tube, which is fixedly connected to one end of the upper delivery tube.

[0115] catch. If a U-shaped delivery pipe or V-shaped delivery pipe is installed at the bottom of the funnel, there are two alumina outlets, and then the U-shaped

[0116] 1 or 2 U-shaped delivery tubes and / or V-shaped delivery tubes are installed at the outlet end of the V-shaped delivery tube, i.e.

[0117] It can feed 3 or 4 feeding ports at the same time, which not only reduces the cost, but also increases the space in the tank. The U-shaped conveying

[0118] Delivery pipe and V-shaped delivery pipe can also ensure smooth discharge. Alumina continuously enters the electrolyte, reducing

[0119] Reduce the fluctuation of alumina concentration in the electrolytic cell and increase the current ef...

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Abstract

The invention belongs to the technical field of aluminum electrolysis cells, and particularly relates to a continuous feeding device for an aluminum electrolysis cell and an electrolysis cell with the same. The continuous feeding device for the aluminum electrolysis cell is capable of improving the stability of the electrolysis cell, lowering energy consumption, reducing sediment and pressure drop at the furnace bottom and prolonging the service life of the cell. According to the technical scheme, the continuous feeding device for the aluminum electrolysis cell comprises a sleeve, a funnel and an upper delivery pipe, wherein the open end of the funnel is fixedly connected with the bottom of the sleeve; and the outlet end of the funnel is fixedly connected with one end of the upper delivery pipe. Since the funnel is arranged at the bottom of the sleeve, so that the flow velocity of fed materials can be reduced, continuous feeding is realized, and the problem caused when alumina powder which is not completely dissolved sinks into the aluminum liquid is avoided.

Description

technical field [0001] The invention belongs to the technical field of aluminum electrolytic cells, in particular to a continuous feeding device for aluminum electrolytic cells and [0002] An electrolytic cell including the feeding device. Background technique [0003] The point blanking technology was formed in the 1980s. Compared with the traditional side blanking technology, the point blanking technology [0004] Blanking technology has many advantages. However, with the emergence of low pole distance technology and to suppress the aluminum liquid wave in the electrolytic cell [0005] The emergence of the electrolytic cell for the purpose of movement makes it more and more difficult for the alumina under the point-type feeding technology to be discharged in the cell. [0006] transportation and dispersion; at the same time, the process route of low superheat also makes the dissolution process of alumina more difficult, [0007] As a result, the spatial distribution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/14
Inventor 不公告发明人
Owner HUNAN CHUANGYUAN ALUMINUM IND
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