Zinc sulfate solution detinning device

Abstract

The utility model discloses a zinc sulfate solution detinning device which comprises a wet precipitation tank, a solution adding opening is formed in the top of the wet precipitation tank, a liquid inlet pipe is arranged on one side of the solution adding opening, a metering barrel is installed on one side of the liquid inlet pipe, a connecting pipe is connected between the metering barrel and the upper end of the liquid inlet pipe, and the connecting pipe is connected with the lower end of the liquid inlet pipe. The lower end of the liquid inlet pipe is connected with an extension pipe, and a liquid storage pipe is installed below the metering barrel. A solution adding opening is formed in the upper portion of the wet precipitation tank, a flocculating agent is added into the wet precipitation tank through the solution adding opening, meanwhile, a liquid inlet pipe is arranged on one side of the solution adding opening, potassium permanganate is added into the wet precipitation tank through the liquid inlet pipe, and potassium permanganate and the flocculating agent are added. Potassium permanganate is used as a strong oxidant to help the valence state of tin in a zinc sulfate solution to change, and tin metal is hydrolyzed and precipitated into leaching residues by changing the valence state of tin, so that the tin content of liquid is controlled within a normal value range.

Description

Technical Field

[0001] The utility model relates to the technical field of zinc smelting, in particular to a stannum removal device for zinc sulfate solution. Background Technique

[0002] In the process of hydrometallurgical zinc smelting, the zinc sulfate solution contains a certain amount of stannum. Since its electrode potential is more positive than that of zinc, it is very harmful to the electrolytic deposition process of hydrometallurgical zinc smelting, easily causing serious "burning of plates", and inducing other impurities to "burn plates", which has an adverse impact on the product output and technical and economic indicators. Therefore, it is necessary to remove stannum ions from the zinc sulfate solution.

[0003] In the existing stannum removal device for zinc sulfate solution, during the stannum removal process, the operation of introducing air is mostly used to reduce the stannum ions in the zinc sulfate solution, and the stannum content in the leaching solution is reduced by air. However, introducing air to reduce stannum ions is only applicable to the case of removing a large amount of stannum ions from a high-concentration stannum-containing solution, and is not applicable to reducing the stannum content in a low-concentration stannum-containing solution, making it difficult to remove stannum from a low-concentration stannum-containing solution.

[0004] Therefore, those skilled in the art have provided a stannum removal device for zinc sulfate solution to solve the problems raised in the above background technique. Content of the Utility Model

[0005] The purpose of the utility model is to provide a stannum removal device for zinc sulfate solution to solve the problem that the existing stannum removal device for zinc sulfate solution is not applicable to reducing the stannum content in a low-concentration stannum-containing solution raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A stannum removal device for zinc sulfate solution includes: a wet precipitation tank, a solution addition port is installed at the top of the wet precipitation tank, a liquid inlet pipe is arranged on one side of the solution addition port, a metering barrel is installed on one side of the liquid inlet pipe, a connecting pipe is connected between the upper end of the metering barrel and the liquid inlet pipe, the lower end of the liquid inlet pipe is connected with an extension pipe, a liquid storage pipe is installed below the metering barrel, a liquid infusion port is opened on the surface of the liquid storage pipe, an interface is installed inside the liquid infusion port by means of threading, an installation column is installed at the bottom of the liquid storage pipe, a conveying pipe is installed on the front side of the installation column, a communicating pipe is connected to the surface of the conveying pipe, and a valve is installed on the surface of the communicating pipe.

[0008] As a further scheme in the utility model, a stirring rod is installed inside the wet precipitation tank, and a motor for driving is installed at the upper end of the stirring rod.

[0009] As a further solution in the present utility model, a rotating shaft is installed inside the metering barrel, and a spiral blade is integrally connected to the surface of the rotating shaft. A motor is installed at the top of the rotating shaft.

[0010] As a further solution in the present utility model, a hose is connected to one inner wall of the metering barrel. The input end of the hose is connected to a suction pump, and an observable transparent viewing window is installed on the surface of the metering barrel.

[0011] As a further solution in the present utility model, the metering barrel is interconnected with the upper end of the liquid inlet pipe through a connecting pipe, and the inside of the metering barrel is connected to the lower liquid storage pipe through a hose.

[0012] As a further solution in the present utility model, a base is fixedly installed below the wet precipitation tank, and a liquid extraction port is opened on the upper surface of the wet precipitation tank.

[0013] As a further solution in the present utility model, a valve disc is installed on the surface of the solution addition port, and the bottom of the wet precipitation tank is interconnected with a delivery pipe through a communicating pipe.

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

[0015] 1. A solution addition port is arranged behind the wet precipitation tank. The flocculant is added into the wet precipitation tank through the solution addition port. At the same time, a liquid inlet pipe is arranged on one side of the solution addition port, and potassium permanganate is added into the wet precipitation tank through the liquid inlet pipe. The addition of potassium permanganate and the flocculant uses potassium permanganate as a strong oxidant to help change the valence state of tin in the zinc sulfate solution. By changing the valence state of tin, tin metal is hydrolyzed and precipitated into the leaching residue, so that the tin content in the liquid is controlled within the normal value range. At the same time, the flocculant is supplemented to help the tin metal change its valence state, so that the tin metal precipitates inside the wet precipitation tank, which is beneficial to the desnification operation of the zinc sulfate solution, controls the tin content in the zinc sulfate solution, and is beneficial to the reduction of the tin content in the low-concentration tin-containing solution.

[0016] 2. A communicating pipe is connected to the bottom of the wet precipitation tank. After the valve is opened and the solution is pumped out, the tin metal precipitate is output through the communicating pipe and the delivery pipe, which is convenient for the stannous hydroxide in the leaching residue of the zinc sulfate solution in the wet precipitation tank to be discharged after precipitation. The discharged precipitate can be roasted at high temperature in a volatilization kiln, and with the open circuit of the roasted kiln slag, it is beneficial to realize the recycling of the tin metal precipitate. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a device for desnifying zinc sulfate solution.

[0018] Figure 2It is a schematic structural diagram of the second perspective of a stannum removal device for zinc sulfate solution.

[0019] Figure 3 It is a schematic structural diagram of the installation structure between the installation column, the liquid storage pipe and the conveying pipe in a stannum removal device for zinc sulfate solution.

[0020] Figure 4 It is a schematic structural diagram of the metering barrel in a stannum removal device for zinc sulfate solution.

[0021] In the figure: 1, wet precipitation tank; 2, solution addition port; 3, valve disc; 4, base; 5, liquid inlet pipe; 6, metering barrel; 601, rotating shaft; 602, motor; 603, spiral blade; 604, observation window; 605, pump; 606, hose; 7, liquid storage pipe; 8, installation column; 9, liquid outlet; 10, liquid extraction port; 11, connecting pipe; 12, interface; 13, motor; 14, stirring rod; 15, conveying pipe; 16, communicating pipe; 17, valve; 18, extension pipe. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 to 4 , the embodiments of the present invention provide a stannum removal device for zinc sulfate solution, including: a wet precipitation tank 1, a solution addition port 2 is installed on the top of the wet precipitation tank 1, a valve disc 3 is installed on the surface of the solution addition port 2, a liquid inlet pipe 5 is arranged on one side of the solution addition port 2, a stirring rod 14 is installed inside the wet precipitation tank 1, and a motor 13 for driving is installed at the upper end of the stirring rod 1, a base 4 is fixedly installed below the wet precipitation tank 1, and a liquid extraction port 10 is opened on the upper surface of the wet precipitation tank 1;

[0024] Specifically, since the top of the wet precipitation tank 1 is provided with a solution addition port 2, a liquid inlet pipe 5 and a liquid extraction port 10 at the same time, potassium permanganate and a flocculant can be added to the inside of the wet precipitation tank 1 through the solution addition port 2 and the liquid inlet pipe 5. By using potassium permanganate and the flocculant, the tin in the zinc sulfate solution can change its valence state and precipitate in the solution. By changing the valence state of tin, the tin metal can be removed. The setting of the liquid extraction port 10 facilitates the extraction of the solution through the liquid extraction port 10, thereby facilitating the recovery of the precipitate in the wet precipitation tank 1.

[0025] On one side of the liquid inlet pipe 5, a metering barrel 6 is installed. A connecting pipe 11 is connected between the upper end of the metering barrel 6 and the liquid inlet pipe 5. The lower end of the liquid inlet pipe 5 is connected with an extension pipe 18. A liquid storage pipe 7 is installed below the metering barrel 6. A liquid infusion port 9 is provided on the surface of the liquid storage pipe 7. An interface 12 is installed inside the liquid infusion port 9 by means of internal threads. A rotating shaft 601 is installed inside the metering barrel 6. And a spiral blade 603 is integrally connected to the surface of the rotating shaft 601. A motor 602 is installed at the top of the rotating shaft 601. One inner wall of the metering barrel 6 is connected with a flexible pipe 606. The input end of the flexible pipe 606 is connected with a suction pump 605. An observable transparent observation window 604 is installed on the surface of the metering barrel 6. The metering barrel 6 is communicated with the upper end of the liquid inlet pipe 5 through the connecting pipe 11. And the inside of the metering barrel 6 is connected with the liquid storage pipe 7 below through the flexible pipe 606;

[0026] Specifically, a rotating shaft 601 and a spiral blade 603 are arranged inside the metering barrel 6. The spiral blade 603 is used to push and convey the potassium permanganate liquid agent upwards, and is added into the wet precipitation tank 1 from the liquid inlet pipe 5 through the connecting pipe 11. Potassium permanganate is stored inside the liquid storage pipe 7. The potassium permanganate liquid is pumped into the metering barrel 6 through the suction pump 605 and the flexible pipe 606. The metering barrel 6 is used to control the added milliliter amount of potassium permanganate.

[0027] An installation column 8 is installed at the bottom of the liquid storage pipe 7. A conveying pipe 15 is installed on the front side of the installation column 8. A communicating pipe 16 is connected to the surface of the conveying pipe 15. A valve 17 is installed on the surface of the communicating pipe 16. The bottom of the wet precipitation tank 1 is connected to the conveying pipe 15 through the communicating pipe 16;

[0028] Specifically, a liquid infusion port 9 is arranged on one side of the liquid storage pipe 7, and an installation interface 12 is installed. The external pipeline is communicated with the liquid infusion port 9 through the interface 12, so as to supplement and add the liquid in the liquid storage pipe 7. The communicating pipe 16 and the conveying pipe 15 are used to discharge and recycle the tin metal precipitate in the wet precipitation tank 1.

[0029] The working principle of the present utility model is:

[0030] When using the present utility model, first, zinc sulfate solution is added into the wet precipitation tank 1, potassium permanganate solution is added into the liquid storage tube 7 through the liquid infusion port 9, the potassium permanganate solution is pumped into the metering barrel 6 through the pump 605 and the hose 606, the motor 602 drives the rotating shaft 601 to rotate, and the spiral structure of the spiral blades 603 on the surface of the rotating shaft 601 will push the potassium permanganate solution stored in the metering barrel 6 upward. Then, it is sent into the liquid inlet pipe 5 through the connecting pipe 11 and flows into the inside of the wet precipitation tank 1 through the liquid inlet pipe 5 and the extension pipe 18. The motor 13 drives the stirring rod 14 to rotate to help the solution mix with potassium permanganate. Subsequently, a flocculant is added into the wet precipitation tank 1 through the solution addition port 2. Potassium permanganate is used as a strong oxidant to help change the valence state of tin in the zinc sulfate solution. By changing the valence state of tin, the tin metal is hydrolyzed and precipitated into the leaching residue, so that the tin content in the liquid is controlled within the normal value range. At the same time, the flocculant is supplemented to help the tin metal change its valence state, so that the tin metal precipitates inside the wet precipitation tank 1. Then, the tin-removed zinc sulfate solution is pumped out through the liquid extraction port 10. Finally, the valve 17 is opened, and the tin metal precipitate is discharged through the communicating pipe 16 and the conveying pipe 15.

[0031] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A stannum removal device for zinc sulfate solution, characterized in that, Including: A wet precipitation tank (1), on the top of the wet precipitation tank (1) is installed a solution addition port (2), on one side of the solution addition port (2) is arranged a liquid inlet pipe (5), on one side of the liquid inlet pipe (5) is installed a metering barrel (6), between the upper end of the metering barrel (6) and the liquid inlet pipe (5) is connected a connecting pipe (11), the lower end of the liquid inlet pipe (5) is connected with an extension pipe (18), below the metering barrel (6) is installed a liquid storage pipe (7), on the surface of the liquid storage pipe (7) is provided an infusion port (9), inside the infusion port (9) is threadedly installed an interface (12), at the bottom of the liquid storage pipe (7) is installed a mounting column (8), on the front side of the mounting column (8) is installed a delivery pipe (15), on the surface of the delivery pipe (15) is connected a communicating pipe (16), on the surface of the communicating pipe (16) is installed a valve (17).

2. The stannum removal device for zinc sulfate solution according to claim 1, characterized in that, Inside the wet precipitation tank (1) is installed a stirring rod (14), and at the upper end of the stirring rod (14) is installed a motor (13) for driving.

3. A stannum removal device for zinc sulfate solution according to claim 1, characterized in that, Inside the metering barrel (6) is installed a rotating shaft (601), and on the surface of the rotating shaft (601) is integrally connected a spiral blade (603), at the top of the rotating shaft (601) is installed a motor (602).

4. A stannum removal device for zinc sulfate solution according to claim 1, characterized in that, On one inner wall of the metering barrel (6) is connected a flexible pipe (606), the input end of the flexible pipe (606) is connected with a suction pump (605), on the surface of the metering barrel (6) is installed a transparent and observable observation window (604).

5. A stannum removal device for zinc sulfate solution according to claim 1, characterized in that, The metering barrel (6) is interconnected with the upper end of the liquid inlet pipe (5) through the connecting pipe (11), and the inside of the metering barrel (6) is connected with the lower liquid storage pipe (7) through the flexible pipe (606).

6. The tin removal device for zinc sulfate solution according to claim 1, characterized in that, Below the wet precipitation tank (1) is fixedly installed a base (4), on the upper surface of the wet precipitation tank (1) is provided a liquid extraction port (10).

7. The stannum removal device for zinc sulfate solution according to claim 1, characterized in that, On the surface of the solution addition port (2) is installed a valve disc (3), the bottom of the wet precipitation tank (1) is interconnected with the delivery pipe (15) through the communicating pipe (16).

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