Dustproof mixing device for solid powder additive in nickel electrolytic production

Abstract

The utility model discloses a dustproof mixing device of solid powder additive in nickel electrolysis production, through two -stage mixing jar design, realized the full even mixing of the dust class powder of insoluble in water and solution, prevents the flying of powder in the adding process effectively simultaneously, has improved the operating environment, has improved the use efficiency of additive. The scheme has higher technical feasibility and economic feasibility, and the operation is simple, is applicable to the adding of various easy flying solid powder additives in nickel electrolysis production.

Description

Technical Field

[0001] This utility model belongs to the field of nickel electrolysis technology and relates to an additive preparation device for nickel electrolysis production, specifically a dustproof mixing device for solid powder additives in nickel electrolysis production. Background Technology

[0002] In the nickel electrolysis industry, solid powder additives (such as charcoal powder and activated carbon) are widely used in processes such as purification, adsorption, and catalysis of liquid solutions. However, due to their small particle size, low density, and porous surface, solid powder additives easily generate dust during addition, affecting the operating environment and posing a threat to employee health. Furthermore, the addition of poorly soluble or insoluble solid particles using traditional methods often results in uneven mixing between the powder and solution, affecting the additive's effectiveness and causing waste.

[0003] Existing methods for adding powder additives typically involve direct pouring or simple stirring, which makes it difficult to achieve a thorough and uniform mixture between the powder and the solution, and also fails to effectively control dust emissions. Therefore, there is an urgent need for an addition method and device that can effectively prevent dust emissions and achieve thorough mixing between the powder and the solution. Utility Model Content

[0004] This invention aims to provide a dustproof mixing device for solid powder additives in nickel electrolysis production. Through a two-stage mixing tank design, it achieves thorough and uniform mixing of solid powder additives and solutions, while effectively preventing powder from flying during the addition process, improving the operating environment and increasing the efficiency of additive use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A dust-proof mixing device for solid powder additives in nickel electrolysis production includes a primary mixing tank and a secondary mixing tank, wherein:

[0007] The top of the primary mixing tank is equipped with an axial flow fan and a feeding port, and a detachable filter element is installed at the end of the axial flow fan;

[0008] A buffer plate is connected to the bottom of the feeding port, and a water distribution plate is connected to the bottom of the buffer plate.

[0009] The bottom of the primary mixing tank is equipped with a wave-shaped water-retaining dam;

[0010] The first-stage mixing tank is provided with a first-stage liquid outlet on one side of the bottom, and the first-stage liquid outlet is connected to the second-stage mixing tank through a pipe;

[0011] A primary liquid inlet is provided on the top of the other side of the primary mixing tank;

[0012] The secondary mixing tank is provided with a secondary liquid inlet on the side and multiple secondary liquid outlets at the bottom.

[0013] The water distribution plate is cone-shaped, with its larger end facing the inlet and its smaller end facing the outlet.

[0014] The height of the dam shall not exceed one-third of the height of the primary mixing tank.

[0015] The buffer plate has an inclination angle of 30° to 60° and a length of 1 / 3 to 1 / 2 of the height of the primary mixing tank.

[0016] The top of the secondary mixing tank is also equipped with a stirring device, which includes a motor fixed to the top of the secondary mixing tank and a stirring paddle connected to the motor drive. The stirring paddle is inserted into the interior of the secondary mixing tank.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention utilizes a two-stage mixing tank design to achieve thorough and uniform mixing of water-insoluble powders and solutions, while effectively preventing powder from becoming airborne during addition, thus improving the operating environment and increasing the efficiency of additive use. This solution is highly technically and economically feasible, easy to operate, and suitable for adding various easily airborne solid powder additives in nickel electrolysis production. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the mixing device of this utility model.

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the intermediate mixing tank.

[0021] Figure 3 for Figure 1 A schematic diagram of the secondary mixing tank.

[0022] In the diagram: 1- Primary mixing tank, 2- Axial flow fan, 3- Removable filter element, 4- Feed port, 5- Buffer plate, 6- Dam, 7- Divider plate, 8- Primary liquid inlet, 9- Primary liquid outlet, 10- Secondary mixing tank, 11- Secondary liquid inlet, 12- Secondary liquid outlet, 13- Agitator. Detailed Implementation

[0023] The present invention will be further explained below with reference to the accompanying drawings.

[0024] like Figure 1-3 As shown, a dust-proof mixing device for solid powder additives in nickel electrolysis production includes a primary mixing tank 1 and a secondary mixing tank 10, wherein:

[0025] The top of the primary mixing tank 1 is equipped with an axial flow fan 2 and a feed port 4. A removable filter element 3 is installed in the connecting pipe at the end of the axial flow fan 2. A buffer plate 5 is connected to the bottom of the feed port 4, and a water distribution plate 7 is connected to the bottom of the buffer plate 5.

[0026] The bottom of the primary mixing tank 1 is equipped with a wave-shaped water-retaining dam 6;

[0027] A primary outlet 9 is provided at the bottom of one side of the primary mixing tank 1, and the primary outlet 9 is connected to the secondary mixing tank 10 through a pipe; a primary inlet 8 is provided at the top of the other side of the primary mixing tank 1.

[0028] The secondary mixing tank 10 is provided with a secondary liquid inlet 11 on the side and multiple secondary liquid outlets 12 at the bottom.

[0029] In the above-mentioned device structure, the primary mixing tank 1 is used for the initial mixing of solid powder additives and a small amount of solution;

[0030] The top of the primary mixing tank is equipped with a variable frequency axial flow fan and a removable filter element, providing a slight negative pressure inside the mixing tank to facilitate powder addition and ensure the stability of the mixing process. The removable filter element has an outer layer of stainless steel wire mesh and an inner layer of polymer microporous filter membrane. The pore sizes of the inner and outer layers are selected according to the size of the additives, which is used to isolate the powder from the outside air and prevent the powder from being drawn out by the axial flow fan, effectively playing a dust prevention role.

[0031] The top-opening feed port 4 of the primary mixing tank 1 facilitates the addition of powder. The bottom of the feed port 4 is equipped with a buffer plate 5 with an inclination angle of 30°~60° and a length of 1 / 3~1 / 2 of the tank height. The surface is treated with an anti-static coating to allow the powder to fall slowly and prevent the powder from splashing when added vertically.

[0032] The bottom of the primary mixing tank 1 is equipped with a wave-shaped water-blocking dam 6. The height of the water-blocking dam 6 does not exceed one-third of the height of the primary mixing tank 1. The water-blocking dam creates turbulence at the bottom of the solution, which promotes the rapid mixing of solids and solution. While changing the liquid level difference, it can effectively prevent impurities from clogging the liquid and send the powder floating on the liquid surface to the liquid outlet.

[0033] A water-dividing plate 7 is installed at the bottom of the buffer plate 5. The water-dividing plate 7 is conical, with its larger end facing the primary inlet 8 and its smaller end facing the secondary outlet 9. Its functions are twofold: firstly, to work with the water-blocking dam 6 to create turbulence and accelerate mixing; and secondly, to use the impact force of the solution to drive the buffer plate to generate moderate vibration, promoting the uniform falling of charcoal powder and achieving thorough solid-liquid mixing in the mixing zone.

[0034] The secondary mixing tank 10 is used for thorough and uniform mixing of the primary mixture and a large quantity of solution. The primary mixture enters the secondary mixing tank from the outlet of the primary mixing tank, while a large quantity of nickel electrolyte enters from the secondary inlet and mixes with it. By setting multiple outlets, the mixture is directionally distributed to ensure uniform distribution. The top of the secondary mixing tank 10 is also equipped with a stirring device 13, which includes a motor fixed to the top of the secondary mixing tank 10 and a stirring paddle connected to the motor drive. The stirring paddle is inserted into the interior of the secondary mixing tank.

[0035] The working process of this utility model is as follows:

[0036] (1) Operation of a primary mixing tank

[0037] A small amount of solution enters the primary mixing tank 1 through the primary inlet 8, with the flow rate determined according to actual production conditions. An axial flow fan 2 provides a pressure differential to promote mixing. Solid powder additives are added to the primary mixing tank 1 through the feed port 4, with the addition rate determined according to actual production conditions, and are initially mixed with the solution. A buffer plate 5 ensures the powder falls slowly, preventing splashing. A water-blocking dam 6 is designed at the bottom of the tank 1, increasing bottom roughness to promote rapid mixing of powder and solution, while effectively preventing impurities from clogging the liquid surface, and sending solid powder floating on the liquid surface to the primary outlet 9. The water-separating plate 7 not only achieves effective mixing of the solution but also ensures the efficient and stable operation of the system through the dual effects of mechanical vibration and impact mixing.

[0038] (2) Operation of the secondary mixing tank

[0039] The primary mixture enters the secondary mixing tank 10 through the primary outlet 9, with the flow rate determined according to actual production conditions. A large amount of solution enters through the secondary inlet 11, ensuring thorough mixing. The stirring device 13 adjusts the stirring speed according to the concentration of the mixture. By setting multiple outlets 12, it achieves directional diversion of the mixture, ensuring uniform distribution.

[0040] (3) Operating Precautions

[0041] Add solid powder additives at regular intervals and in measured amounts to avoid adding too much at once, which could lead to excessively high local concentrations.

[0042] Regularly check the filter cartridge to ensure it is effective at preventing dust, and replace it as needed.

[0043] Regularly clean the dams and buffer plates to ensure stable mixing.

Claims

1. A dust-proof mixing device for solid powder additives in nickel electrolysis production, characterized in that, It includes a primary mixing tank (1) and a secondary mixing tank (10), wherein: The top of the primary mixing tank (1) is equipped with an axial flow fan (2) and a feeding port (4), and a detachable filter element (3) is installed at the end of the axial flow fan (2). The bottom of the feeding port (4) is connected to a buffer plate (5), and the bottom of the buffer plate (5) is connected to a water distribution plate (7). The bottom of the primary mixing tank (1) is provided with a wave-shaped water-retaining dam (6). The first-stage mixing tank (1) is provided with a first-stage liquid outlet (9) at the bottom of one side, and the first-stage liquid outlet (9) is connected to the second-stage mixing tank (10) through a pipe. A primary liquid inlet (8) is provided on the top of the other side of the primary mixing tank (1). The secondary mixing tank (10) is provided with a secondary liquid inlet (11) on the side and multiple secondary liquid outlets (12) at the bottom.

2. The dust-proof mixing device for solid powder additives in nickel electrolysis production as described in claim 1, characterized in that, The water distribution plate (7) is cone-shaped, with its large end facing the primary inlet (8) and its small end facing the primary outlet (9).

3. The dust-proof mixing device for solid powder additives in nickel electrolysis production as described in claim 1, characterized in that, The height of the dam (6) shall not exceed one-third of the height of the primary mixing tank (1).

4. The dust-proof mixing device for solid powder additives in nickel electrolysis production as described in claim 1, characterized in that, The buffer plate (5) has an inclination angle of 30°~60° and a length of 1 / 3~1 / 2 of the height of the primary mixing tank (1).

5. The dust-proof mixing device for solid powder additives in nickel electrolysis production as described in claim 1, characterized in that, The top of the secondary mixing tank (10) is also provided with a stirring device (13), which includes a motor fixed to the top of the secondary mixing tank (10) and a stirring paddle connected to the motor drive. The stirring paddle is inserted into the interior of the secondary mixing tank.

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