Stirring and mixing device for ammonia-process electrolytic zinc electrolytic bath solution

Abstract

The utility model discloses a stirring and mixing device for an ammonia-process electrolytic zinc electrolytic bath solution. The stirring and mixing device comprises a main pipeline with one closed end, the air outlet pipeline assembly comprises a connecting pipeline, two short pipelines and a plurality of long pipelines, the connecting pipeline is connected with the main pipeline and one of the short pipelines, the two long pipelines are connected with the two short pipelines respectively, and a plurality of air holes are formed in the long pipelines; and the air supply device is used for supplying air to the main pipeline. According to the ammonia-process electric zinc electrolytic bath, the temperature is high, molecular thermal motion is violent, impurity elements are separated out at a cathode more easily, the electric zinc quality is affected, heat is brought out by introducing air into the bath, separation of impurities is reduced, the electric zinc quality is improved, electrolyte is evenly mixed through continuous stirring of the air, and the electric zinc quality is improved. And the phenomena of zinc local dilution and concentration polarization in the electrolysis process are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic zinc, in particular to a stirring and mixing device for ammonia-process electrolytic zinc electrolytic tank solution. Background Art

[0002] Unlike the common acid electrolytic zinc process, the ammonia electrolytic zinc process requires controlling the electrolyte zinc concentration at a lower level and adding a large amount of additives to reduce or hinder the solution mass transfer rate. However, low zinc concentration is prone to local zinc depletion, making industrial control difficult. In addition, excessive residual additives will increase the electrolyte resistance, deteriorate the electrolytic purification index, and increase production costs. Local zinc depletion and a large amount of residual additives are defects of the ammonia electrolytic process itself, and a device suitable for preventing concentration polarization is urgently needed. Utility Model Content

[0003] The utility model aims to solve the above technical problems and provides a stirring and mixing device for ammonia-process zinc electrolysis bath solution.

[0004] The technical solution of the utility model is: a stirring and mixing device for ammonia electrolysis of zinc electrolytic cell solution, comprising:

[0005] A main pipe closed at one end;

[0006] An air outlet pipe assembly, comprising a connecting pipe, two short pipes and a plurality of long pipes, wherein the connecting pipe connects the main pipe and one of the short pipes, the two long pipes are respectively connected to two of the short pipes, and the long pipes are provided with a plurality of air holes;

[0007] An air supply device is used to supply air to the main pipeline.

[0008] Preferably, the pipe assembly is a titanium metal pipe assembly.

[0009] Preferably, there are several air outlet pipe assemblies, which are respectively connected to the main pipe, and there is at least one air supply device.

[0010] Preferably, it further comprises a plurality of valves, each of which is arranged on the connecting pipe.

[0011] Preferably, one of the short pipes includes a first short pipe, a hose and a second short pipe, and the hose is detachably connected to the first short pipe and the second short pipe.

[0012] Preferably, inner walls of one end of the first short tube and the second short tube are both provided with threads, and both ends of the hose are provided with connectors, which are threadedly connected to the first short tube and the second short tube.

[0013] The beneficial effects of the utility model are as follows: in the utility model, the temperature in the ammonia zinc electrolytic cell is relatively high, the molecular thermal motion is intense, and the impurity elements are more likely to precipitate at the cathode, affecting the quality of the electrolytic zinc. By introducing air into the cell to remove heat, it is beneficial to reduce the precipitation of impurities and improve the quality of the electrolytic zinc. Moreover, by continuous stirring of the air, the electrolyte is evenly mixed, preventing the occurrence of local zinc depletion and concentration polarization during the electrolysis process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the preferred embodiment of the utility model being applied in an electrolytic cell;

[0015] Figure 2 It is a top view of the connection between the connecting pipe and the short pipe in the preferred embodiment of the utility model;

[0016] Figure 3 It is a schematic diagram of a hose in a preferred embodiment of the utility model.

[0017] Reference numerals: main pipeline 10 , connecting pipeline 2 , short pipeline 3 , first short pipe 301 , hose 302 , second short pipe 303 , long pipeline 4 , air hole 401 , air supply device 5 , valve 6 . DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Reference Figures 1 to 3 , a stirring and mixing device for ammonia-based zinc electrolysis bath solution, comprising:

[0020] A main pipe 10 with one end closed;

[0021] An air outlet pipe assembly, comprising a connecting pipe 2, two short pipes 3 and a plurality of long pipes 4, wherein the connecting pipe 2 connects the main pipe 10 and one of the short pipes 3, the two long pipes 4 are respectively connected to the two short pipes 3, and the long pipes 4 are provided with a plurality of air holes 401;

[0022] The air supply device 5 is used to supply air to the main pipeline 10. In the utility model, the air supply device 5 is a Roots blower or an air compressor. The air supply device 5 compresses the air. The compressed air passes through the main pipeline 10 to pass a large flow of air into the connecting pipeline 2, and finally sprays out from the air hole 401 through the short pipeline 3 and the long pipeline 4. The gas moves from bottom to top, and the bubbles drive the bottom solution to roll upward to make the solution mix more evenly and prevent concentration polarization. Secondly, the compressed air has pressure, which blows the anode mud at the bottom of the electrolytic cell and floats it, and it is discharged with the electrolytic waste liquid. In addition, the bubbles can also take away part of the heat in the electrolyte, so that the temperature of the electrolytic cell is reduced. Specifically, the outermost long pipeline 4 is respectively connected to the end of the short pipeline 3 through a two-way pipe; the air outlet end of the air supply device 5 is connected to the main pipeline 10.

[0023] As a preferred embodiment of the utility model, it may also have the following additional technical features:

[0024] In this embodiment, the pipeline assembly is a titanium metal pipeline assembly, which increases the service life of the connecting pipeline 2, the short pipeline 3 and the long pipeline 4.

[0025] In this embodiment, the number of the outlet pipe assemblies is several, which are respectively connected to the main pipe 10, the number of the gas supply device 5 is at least one, and the main pipe 10 can supply gas to multiple outlet pipe assemblies, and then can stir and mix multiple electrolytic cells or electrolyte circulation tanks. Specifically, the gas supply device 5 can supply gas to four outlet pipe assemblies at the same time, and the number of gas supply devices 5 depends on the number of outlet pipe assemblies.

[0026] In this embodiment, a plurality of valves 6 are further included, each of which is arranged on the connecting pipe 2. When some electrolytic cells or electrolyte circulation tanks are not working and other electrolytic cells or electrolyte circulation tanks are working, the valve 6 is closed to prevent gas from being supplied to the gas outlet pipe assembly in the tank.

[0027] In this embodiment, one of the short pipes 3 includes a first short pipe 301, a hose 302 and a second short pipe 303, and the hose 302 is detachably connected to the first short pipe 301 and the second short pipe 303. Specifically, when the long pipe 4 is used for a long time, fine impurities will enter the long pipe 4 from the air hole 401, and the impurities in the long pipe 4 will be blown into a short pipe 3 by the gas, and the impurities will accumulate in the short pipe 3. After there is no electrolyte in the electrolytic cell or the electrolyte circulation tank, the first short pipe 301 and the second short pipe 303 are disconnected by removing the hose 302, and when gas is supplied to the long pipe 4, the impurities in the short pipe 3 will be blown out; the hose 302 is a hose made of corrosion-resistant material, such as a polytetrafluoroethylene hose, a silicone hose, a fluororubber hose, etc.

[0028] In this embodiment, the inner walls of one end of the first short tube 301 and the second short tube 303 are both provided with threads, and both ends of the hose 302 are provided with connectors, which are threadedly connected to the first short tube 301 and the second short tube 303. The hose 302 can be removed by rotating the connector.

[0029] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stirring and mixing device for ammonia electrolysis of zinc electrolytic cell solution, characterized in that: include: A main pipe (10) with one end closed; An air outlet pipe assembly, comprising a connecting pipe (2), two short pipes (3) and a plurality of long pipes (4), wherein the connecting pipe (2) is connected to the main pipe (10) and one of the short pipes (3), the two long pipes (4) are respectively connected to the two short pipes (3), and the long pipes (4) are provided with a plurality of air holes (401); An air supply device (5) is used to supply air to the main pipeline (10).

2. The stirring and mixing device for ammonia electrolysis of zinc electrolytic cell solution according to claim 1, characterized in that: The pipeline component is a titanium metal pipeline component.

3. The stirring and mixing device for ammonia electrolysis of zinc electrolytic cell solution according to claim 1, characterized in that: The number of the air outlet pipe assemblies is several and they are respectively connected to the main pipe (10), and the number of the air supply device (5) is at least one.

4. The stirring and mixing device for ammonia electrolysis of zinc electrolytic cell solution according to claim 1, characterized in that: It also comprises a plurality of valves (6), each of which is arranged on the connecting pipe (2).

5. The stirring and mixing device for ammonia electrolysis of zinc electrolytic cell solution according to claim 1, characterized in that: One of the short pipes (3) comprises a first short pipe (301), a hose (302) and a second short pipe (303), wherein the hose (302) is detachably connected to the first short pipe (301) and the second short pipe (303).

6. The stirring and mixing device for ammonia-based zinc electrolysis bath solution according to claim 5, characterized in that: The inner walls of one end of the first short tube (301) and the second short tube (303) are both provided with threads, and both ends of the hose (302) are provided with connectors, which are threadedly connected to the first short tube (301) and the second short tube (303).

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