Device for efficiently mixing ore pulp and flocculating agent in zinc hydrometallurgy production process
By designing a high-efficiency mixing device for wet zinc smelting production, including slurry chutes, flocculant dispensers, grid plates and stirring devices, the problem of poor mixing of slurry and flocculant is solved, and the full mixing of flocculant and the improvement of the overflow clarification effect of the denser machine is achieved.
Patent Information
- Application Number
- CN202420861173.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-04-24
AI Technical Summary
During the wet zinc smelting production process, the mixing effect of the ore slurry and flocculant is poor, resulting in unsatisfactory clarification effect or the amount of flocculant is required to improve the clarification effect.
Design an efficient mixing device, including a slurry chute, a flocculant dispenser, a grid plate and a stirring device. The flocculant is initially mixed with the ore slurry evenly through the dispenser, then rolls through the grid plate, and then mixes and stirs by the agitator, and finally enters the thickener for liquid-solid separation.
The full mixing of ore slurry and flocculant is achieved, the single consumption of flocculant is reduced, and the overflow clarification effect of the denser machine is improved.
Smart Images
Figure CN222677864U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of zinc smelting reaction equipment, and in particular relates to a high-efficiency mixing device for ore pulp and flocculant in the production process of hydrometallurgical zinc smelting. Background Art
[0002] In the process of hydrometallurgical zinc smelting, flocculants must be added to the produced slurry before entering the thickener to achieve the purpose of liquid-solid separation.
[0003] At present, the traditional flocculant addition method is as follows Figure 1 As shown, it mainly includes a slurry conveying pipeline 1-1, a flocculant conveying pipeline 1-2, a slurry chute 1-3, and a thickener liquid inlet pipe 1-4; its working principle is as follows: the liquids in the slurry conveying pipeline 1-1 and the flocculant conveying pipeline 1-2 are mixed in the slurry chute 1-3 at the same time, and enter the thickener through the thickener liquid inlet pipe 1-4 for liquid-solid separation operation; the above method has the problem that during the slurry liquid-solid separation operation, the clarification effect is not ideal due to the poor mixing effect of the flocculant and the slurry, or the clarification effect can only be improved by increasing the amount of flocculant (the increase in the organic matter content of the zinc system will affect the zinc electrowinning production). The main reason is that when the flocculant and the slurry are mixed in the chute, due to the short chute stroke, the mixing effect of the two fluids is poor, the flocculant cannot be fully mixed with the slurry, and the slurry particles are not fully agglomerated.
[0004] Therefore, how to provide an efficient mixing device that can fully mix the flocculant with the slurry, reduce the unit consumption of the flocculant, and improve the overflow clarification effect of the thickener is a problem that needs to be solved urgently. Utility Model Content
[0005] In view of this, the purpose of the utility model is to provide a high-efficiency mixing device for slurry and flocculant in the process of wet zinc smelting, so that the flocculant and slurry are fully mixed, the unit consumption of flocculant is reduced, and the overflow clarification effect of the thickener is improved.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A high-efficiency mixing device for slurry and flocculant in a hydrometallurgical zinc production process, comprising a slurry chute, one end of which is connected to a slurry delivery pipeline, and the other end is connected to a stirring device, and the stirring device is connected to a thickener through a liquid supply chute;
[0008] Wherein, the slurry chute is provided with a flocculant distributor at one end connected to the slurry delivery pipeline, and is connected to the flocculant delivery pipeline;
[0009] A grid plate is provided in the slurry chute and is located between the flocculant distributor and the stirring device.
[0010] Preferably, the stirring device comprises a shell and a stirring structure, the height of the shell is higher than the heights of the liquid supply chute and the slurry chute, so that the bottom of the shell is lower than the bottom of the liquid supply chute and the slurry chute.
[0011] Preferably, the rotation speed of the stirring structure is 45-65 r / min, and the blade angle is greater than 15.3°.
[0012] Preferably, a baffle is provided inside the shell.
[0013] Preferably, the shell is cylindrical, and the angle between the liquid supply chute and the slurry chute is 90 degrees.
[0014] Preferably, the height difference between the shell and the liquid supply chute and the slurry chute is 250 mm.
[0015] Preferably, the mixing time of the slurry and the flocculant in the stirring device is 15-20 seconds.
[0016] Preferably, the flocculant distributor is cylindrical, with circular holes evenly distributed on the cylindrical surface, and the distance between the circular holes is not less than 120 mm.
[0017] Preferably, the grid is evenly distributed circular holes.
[0018] Preferably, the size of the grid plate is the same as the cross-section of the liquid supply chute.
[0019] Preferably, the mixing time of the slurry and the flocculant in the slurry chute is 6-9s.
[0020] Preferably, the mesh plate is made of 316L.
[0021] The working principle of the device of the utility model is as follows: by designing a flocculant distributor in the flocculant adding mode, the flocculant solution added into the flocculant delivery pipeline is uniformly discharged through the flocculant distributor, and preliminarily mixed with the slurry in the slurry chute, and then the slurry is tumbled through the pores of the mesh plate during the flow process, and when the preliminarily mixed liquid flows to the stirring device, the liquid is mixed and stirred by the stirring structure, and after stirring, the liquid continues to flow into the thickener for liquid-solid separation operation.
[0022] Compared with the prior art, the utility model has the following beneficial effects:
[0023] The utility model provides a high-efficiency mixing device for pulp and flocculant in the production process of wet zinc smelting. By arranging a grid plate and making the flocculant in a stirring device fully mixed with the pulp, the unit consumption of flocculant is reduced and the overflow clarification effect of the thickener is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0025] Figure 1 A three-dimensional diagram of a mixing device for slurry and flocculant in a conventional hydrometallurgical zinc production process;
[0026] Among them, the slurry delivery pipeline 1-1, the flocculant delivery pipeline 1-2, the slurry chute 1-3, and the thickener liquid inlet pipe 1-4;
[0027] Figure 2 This is a three-dimensional diagram of a high-efficiency mixing device for slurry and flocculant used in the production process of hydrometallurgical zinc smelting according to the utility model;
[0028] Figure 3 This is an enlarged view of a flocculant distributor of a high-efficiency mixing device for slurry and flocculant in a hydrometallurgical zinc production process of the utility model;
[0029] Figure 4 This is an enlarged view of a grid plate of a high-efficiency mixing device for slurry and flocculant in a hydrometallurgical zinc production process of the utility model;
[0030] Figure 5 This is an enlarged view of a stirring device for a high-efficiency mixing device of slurry and flocculant in a production process of hydrometallurgical zinc smelting according to the utility model;
[0031] Among them, there are a slurry conveying pipeline 1, a flocculant conveying pipeline 2, a flocculant distributor 3, a slurry chute 4, a grid plate 5, a shell 6, a stirring structure 7, a liquid inlet pipe 8, a liquid supply chute 9, and a paddle 10. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0033] Example 1
[0034] like Figure 2The utility model provides a high-efficiency mixing device for slurry and flocculant in the production process of hydrometallurgical zinc smelting, comprising a slurry chute 4, one end of the slurry chute 4 is connected to a slurry conveying pipeline 1, and the other end is connected to a stirring device, the stirring device is connected to a liquid inlet pipe 8 of a thickener through a liquid supply chute 9, and the angle between the liquid supply chute and the slurry chute is 90° (or other angles);
[0035] Among them, the slurry chute 4 is provided with a flocculant distributor 3 at one end connected to the slurry delivery pipeline 1, and is connected to the flocculant delivery pipeline 2. The flocculant distributor 3 is cylindrical, and circular holes (such as Figure 3 ), the pipe diameter is not greater than DN120, the hole spacing is not less than 120mm, the number of round holes is 18, and the liquid flow rate is about 2-5m under the condition of a diameter of 20mm 3 / h;
[0036] A mesh plate 5 (such as Figure 4 ), with evenly distributed circular holes on it, located between the flocculant distributor 3 and the stirring device, the distance between the grid plate 5 and the flocculant distributor 3 is 2-3m (to ensure the slurry flow time of 6-9s), the grid plate 5 is made of 316L, and the working area is the same as the slurry flow cross-sectional area in the chute;
[0037] Stirring device (such as Figure 5 ) includes a shell 6 and a stirring structure 7. The shell 6 is cylindrical. The height of the shell 6 is higher than the height of the liquid supply chute 9 and the slurry chute 4, so that the bottom of the shell 6 is lower than the bottom of the liquid supply chute 9 and the slurry chute 4. The volume of the shell 6 is about 1.25-1.67m 3 The height difference between the shell 6 and the liquid supply chute 9 is 250mm, and there is an overflow space of 250mm at the bottom. The overall volume should not be too large or too small. The rotation speed of the stirring structure 7 is 45-65r / min, and the angle of the blade 10 is greater than 15.3°. A baffle is provided inside the shell 6 to make the slurry tumble and achieve a uniform mixing effect. The mixing time of the slurry and the flocculant in the stirring device is 15-20s;
[0038] General slurry flow rate Q = 300m 3 / h, slurry chute cross-sectional area A = 0.25m 2 According to the formula Q = V * A, the solution flow rate V = Q / (A * 3600) = 0.33m / s, and the initial mixing time of flocculant and slurry in the slurry chute is the best between 6-9s, and the mixing time of flocculant and slurry in the stirring device is the best between 15-20s. Therefore, the distance between the grid plate and the distributor is 2-3m, and the volume solution of the stirring device is about 1.25-1.67m 3 If the shell volume is too small, the flocculant and the slurry will not be completely mixed before entering the liquid supply chute, resulting in insufficient mixing of the flocculant and the slurry.
[0039] The working principle of the device of the utility model is as follows: by designing a distributor in the flocculant adding mode, the flocculant solution added into the flocculant delivery pipeline is uniformly discharged through the distributor, and preliminarily mixed with the slurry in the slurry chute, and then the slurry is tumbled through the pores of the mesh plate during the flow, and when the preliminarily mixed liquid flows to the stirring device, the liquid is mixed and stirred by the stirring structure, and after stirring, the liquid continues to flow into the thickener for liquid-solid separation operation, and the device reduces the unit consumption of flocculant and improves the overflow clarification effect of the thickener.
[0040] The various embodiments are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to in detail.
[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A highly efficient mixing device for slurry and flocculant in the production process of hydrometallurgical zinc smelting, characterized in that: It includes a slurry chute, one end of which is connected to a slurry delivery pipeline, and the other end is connected to a stirring device, and the stirring device is connected to a thickener through a liquid supply chute; Wherein, the slurry chute is provided with a flocculant distributor at one end connected to the slurry delivery pipeline, and is connected to the flocculant delivery pipeline; A grid plate is provided in the slurry chute and is located between the flocculant distributor and the stirring device.
2. The device for efficiently mixing slurry and flocculant in the production process of hydrometallurgical zinc smelting according to claim 1, characterized in that: The stirring device comprises a shell and a stirring structure. The height of the shell is higher than the heights of the liquid supply chute and the slurry chute, so that the bottom of the shell is lower than the bottom of the liquid supply chute and the slurry chute.
3. The device for efficiently mixing slurry and flocculant in the process of hydrometallurgical zinc smelting according to claim 2, characterized in that: The blade angle of the stirring structure is greater than 15.3°.
4. The device for efficiently mixing slurry and flocculant in the production process of hydrometallurgical zinc smelting according to claim 2, characterized in that: A baffle is arranged inside the shell.
5. The device for efficiently mixing slurry and flocculant in the process of hydrometallurgical zinc smelting according to claim 2, characterized in that: The height difference between the shell and the liquid supply chute and the slurry chute is 250 mm.
6. The device for efficiently mixing slurry and flocculant in the production process of hydrometallurgical zinc smelting according to claim 2, characterized in that: The shell is cylindrical, and the angle between the liquid supply chute and the slurry chute is 90 degrees.
7. The device for efficiently mixing slurry and flocculant in the production process of hydrometallurgical zinc smelting according to claim 1, characterized in that: The flocculant distributor is cylindrical, and circular holes are evenly distributed on the cylindrical surface.
8. The device for efficiently mixing slurry and flocculant in the production process of hydrometallurgical zinc smelting according to claim 7, characterized in that: The distance between the circular holes is not less than 120 mm.
9. The device for efficiently mixing slurry and flocculant in the production process of hydrometallurgical zinc smelting according to claim 1, characterized in that: The size of the grid plate is the same as the cross section of the liquid supply chute.
10. The device for efficiently mixing slurry and flocculant in the production process of hydrometallurgical zinc smelting according to claim 1, characterized in that: The material of the grid plate is 316L.