Solid-liquid reaction and separation device

Abstract

The utility model discloses a solid-liquid reaction and separation device which comprises a shell, a flow guide pipe, a vertically arranged pressing rod, a filter screen and a stirring device, the filter screen and the stirring device are arranged in the shell, and the stirring device is arranged below the filter screen; one end of the pressing rod penetrates through the top wall of the shell and is in sliding connection with the top wall of the shell. The filter screen is horizontally arranged, the top of the filter screen is fixedly connected with the bottom of the pressing rod, and the side wall of the filter screen is slidably connected with the inner side wall of the shell; one end of the flow guide pipe is communicated with the filter screen, and the other end of the flow guide pipe penetrates through the top wall of the shell and extends towards the outer side of the shell; a solid feeding pipe and a liquid feeding pipe are arranged on the upper portion of the side wall of the shell, and a detachably-connected bottom plate is arranged at the bottom of the shell. The technical problem that the later filtering efficiency of a traditional gravity filtering mode is low is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal recycling, and particularly relates to a solid-liquid reaction and separation device. Background Art

[0002] Leaching reaction is one of the important processes for extracting valuable metals from solid waste (such as smelting slag). The general principle is to mix and stir the solid waste and the leaching solution. After full reaction, the valuable metals to be recovered in the solid waste are leached into the leaching solution, and the remaining components remain in the leaching residue. The solid and liquid phases are separated through a filtration process, and the leaching solution and the leaching residue are respectively subjected to subsequent treatment, so as to achieve the purpose of extracting valuable metals from the solid waste.

[0003] The Chinese utility model patent authorization announcement number CN213680825U discloses a special leaching device for recovering metals from metal slag, including a machine body. A feed pipe is arranged at the upper end of the machine body. A support plate and a rotating shaft are arranged inside the machine body. A stirring rod is arranged at the lower end of the rotating shaft, and a power device is rotatably connected to the upper end of the stirring rod. A discharge pipe is arranged on the right side of the machine body. A slot and a filter screen insertion plate in the front-back direction are arranged at the right end of the front surface of the machine body. When the filter screen insertion plate is inserted along the slot, the filter screen insertion plate separates the discharge pipe from the inside of the machine body. A control valve is arranged in the middle of the discharge pipe. The right end of the discharge pipe is connected to a filter box. A filter screen plate is arranged inside the filter box. The right end of the discharge pipe is arranged above the filter screen plate. A liquid outlet pipe is arranged at the bottom of the filter box, and the liquid outlet pipe is arranged below the filter screen plate. This utility model is convenient for cleaning the remaining metal slag in the mixer body. However, the filtering method of this device is traditional gravity filtration. When using natural gravity filtration, the filter residue sinking to the bottom will cause the problem of low filtration efficiency in the later stage. Summary of the Utility Model

[0004] Aiming at the existing technical problems, the utility model aims to provide a solid-liquid reaction and separation device, which can solve the technical problem of low filtration efficiency in the later stage of the traditional gravity filtration method.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A solid-liquid reaction and separation device, the structural characteristics of which are: including a housing, a diversion pipe, a vertically arranged pressure rod, and a filter screen and a stirring device arranged in the housing, and the stirring device is arranged below the filter screen; one end of the pressure rod penetrates through the top wall of the housing and is slidably connected to the top wall of the housing; the filter screen is horizontally arranged, the top of the filter screen is fixedly connected to the bottom of the pressure rod, and the side wall of the filter screen is slidably connected to the inner side wall of the housing; one end of the diversion pipe is communicated with the top of the filter screen, and the other end penetrates through the top wall of the housing and extends to the outside of the housing; a solid feed pipe and a liquid feed pipe are arranged on the upper part of the side wall of the housing, and a detachable bottom plate is arranged at the bottom of the housing.

[0007] The filter screen can adopt a metal filter screen with a certain hardness and will not deform when encountering external forces. When the device is in use, pull up the pressure rod to drive the filter screen to move to the top of the housing. At this time, the filter screen is located above the solid feed pipe. Solid waste is put into the housing through the solid feed pipe, and the corresponding leaching solution is put into the housing from the liquid feed pipe, and the stirring device is started to carry out the leaching reaction. After the leaching reaction is completed, press down the pressure rod to drive the filter screen to move downward. During the downward movement of the filter screen, pressure filtration of the filter residue is carried out to complete the pressure filtration process of the filter residue. At the same time, after the filtrate in the housing is filtered by the filter screen, the diversion pipe can be bent outward into an inverted U shape, and the filtrate is discharged out of the housing through the diversion pipe by the siphon principle. After the filtrate is discharged, the bottom plate is disassembled, and the filter residue is removed from the bottom plate. Compared with the traditional gravity filtration method, the solid-liquid reaction and separation device of the present invention filters the leaching solution after the reaction from above, and the filter residue remains below the filter screen, and the filtration process will not be affected by the sedimentation of the filter residue, which can greatly improve the filtration efficiency. The solid-liquid reaction and separation device of the present invention realizes pressure filtration of the filter residue by arranging a filter screen that can move up and down in the housing, which can effectively improve the solid-liquid separation efficiency. The solid-liquid reaction and separation device of the present invention realizes the integration of leaching and filtration, saving time and assembly economic costs.

[0008] Preferably, the stirring device includes a stirring paddle and a first driving device, and the stirring paddle is arranged on the inner side wall of the bottom plate; the first driving device is arranged on the outer side wall of the bottom plate, and the output end of the first driving device penetrates through the bottom plate and is fixedly connected to the stirring paddle. Arranging the stirring device on the bottom plate facilitates cleaning the stirring paddle when disassembling the bottom plate.

[0009] Preferably, a limiting plate is arranged on the inner side wall of the housing, and the limiting plate is arranged above the stirring paddle. By arranging the limiting part, interference between the filter screen and the stirring paddle during the downward movement of the filter screen can be prevented.

[0010] Specifically, the first driving device is a motor.

[0011] Preferably, a diversion pipe is arranged along the length direction inside the pressure rod, and the outer end of the diversion pipe penetrates through the top of the pressure rod and extends to the outside of the housing.

[0012] Preferably, the outer end of the diversion pipe is connected to a delivery pump. The delivery pump is provided to facilitate the outward extraction of the leaching solution.

[0013] Preferably, the diversion pipe is a flexible hose that can be telescoped along its length.

[0014] Preferably, a second driving device is provided on the outer end of the pressure rod. Under the action of the second driving device, the pressure rod drives the filter screen to move towards or away from the bottom plate.

[0015] Specifically, a first valve is provided on the solid feed pipe, and a second valve is provided on the liquid feed pipe.

[0016] Specifically, an exhaust pipe is provided on the top wall and / or side wall of the housing.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. For the solid-liquid reaction and separation device of the present utility model, compared with the traditional gravity filtration method, the filter screen filters the reacted leaching solution from above, and the filter residue remains below the filter screen. The filtration process is not affected by the sedimentation of the filter residue, greatly improving the filtration efficiency.

[0019] 2. For the solid-liquid reaction and separation device of the present utility model, by providing a liquid collector and a filter screen that can move up and down in the box body, pressure filtration of the filter residue is realized, effectively improving the solid-liquid separation efficiency.

[0020] 3. The solid-liquid reaction and separation device of the present utility model realizes the integration of leaching and filtration, saving time and assembly economic costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the solid-liquid reaction and separation device of the present utility model;

[0022] Figure 2 is Figure 1 a schematic structural diagram of the filter screen moving downward in [FIGURE REFERENCE] until it abuts against the limiting plate;

[0023] Figure 3 is Figure 1 a schematic cross-sectional structural diagram of the pressure rod and the diversion pipe in [FIGURE REFERENCE].

[0024] In the figure:

[0025] 1 - housing, 2 - stirring device, 201 - stirring paddle, 202 - first driving device, 3 - pressure rod, 4 - limiting plate, 5 - solid feed pipe, 6 - liquid feed pipe, 7 - bottom plate, 8 - filter screen, 9 - diversion pipe, 10 - exhaust pipe, 11 - first valve, 12 - second valve, 13 - delivery pump. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. For the convenience of description, words such as "upper", "lower", "left", and "right" in the following text only indicate the same directions as the upper, lower, left, and right of the accompanying drawings themselves, and do not limit the structure.

[0027] As Figure 1 shown, a solid-liquid reaction and separation device provided in this embodiment includes a housing 1, a vertically arranged pressing rod 3, a filter screen 8 and a stirring device 2 arranged in the housing 1. A detachable bottom plate 7 is provided at the bottom of the housing 1, and the stirring device 2 is arranged on the bottom plate 7. Solid feed pipes 5 and liquid feed pipes 6 are respectively provided on the upper parts of the opposite side walls of the housing 1. A first valve 11 is provided on the solid feed pipe 5, and a second valve 12 is provided on the liquid feed pipe 6. An exhaust pipe 10 is provided on the top wall of the housing 1. One end of the pressing rod 3 penetrates through the top wall of the housing 1, and the other end is arranged above the housing 1. The pressing rod 3 is slidably connected to the top wall of the housing 1. The filter screen 8 is horizontally arranged in the housing, the top of the filter screen 8 is fixedly connected to the bottom of the pressing rod 3, and the side wall of the filter screen 8 is slidably connected to the inner side wall of the housing 1. As Figure 3 shown, a diversion pipe 9 is arranged along the length direction inside the pressing rod 3, and this diversion pipe 9 is a flexible hose that can be telescoped along the length direction. One end of the diversion pipe 9 is communicated with the filter screen 8, and the other end penetrates through the top of the pressing rod 3 and is connected to a delivery pump 13. The stirring device 2 includes a stirring paddle 201 and a first driving device 202. The stirring paddle 201 is arranged on the inner side wall of the bottom plate 7. The first driving device 202 is arranged on the outer side wall of the bottom plate 7. The output end of the first driving device 202 penetrates through the bottom plate 7 and is fixedly connected to the stirring paddle 201. The first driving device 202 is a motor. A limiting plate 4 is arranged on the inner side wall of the housing 1, and this limiting plate 4 is arranged above the stirring paddle 201.

[0028] Test Example 1:

[0029] The solid-liquid reaction and separation device of this embodiment is applied to the first-step leaching recovery of the metal element Mn in the primary smelting waste residue of a certain smelting enterprise. The primary smelting waste residue of this enterprise contains approximately 11.12% of the target element Mn, and the main existing forms are compounds such as Mn3O4, MnO2, and MnFe2O4. 20% (mass fraction) H2SO4 is used as the leaching solution, the liquid-solid ratio is 1:5, and the leaching reaction is carried out under normal temperature and pressure conditions.

[0030] Pull up the pressing rod 3, as Figure 1As shown in the figure, the pressing rod 3 drives the filter screen 8 to move to the top of the housing 1. At this time, the filter screen 8 is located above the solid feed pipe 5. The primary waste residue is conveyed from the solid waste feed pipe 5 into the housing 1, and sulfuric acid is pumped from the liquid feed pipe 6 into the housing 1. The first driving device 202 is turned on to make the stirring paddle 201 rotate in the housing 1, and the gas generated during the leaching process is discharged from the exhaust pipe 10 for subsequent treatment. After 2 hours of leaching time, the leaching process is completed. After standing for a period of time, as Figure 2 shown in the figure, the pressing rod 3 is pressed downward. The pressing rod 3 drives the filter screen 8 to move downward along the height direction of the housing 1 and squeeze the reaction liquid. The filter screen 8 moves to abut against the limiting plate 4, and the pressure filtration process is completed. After the filtrate is filtered by the filter screen 8, it is discharged through the diversion pipe 9 under the action of the delivery pump 13. The bottom plate 7 is removed, the filter residue is discharged from the bottom plate 7, and the bottom plate and the stirring paddle are cleaned. Through this device, the leaching rate of Mn element in the leaching solution is about 67%.

[0031] Test Example 2:

[0032] The solid-liquid reaction and separation device of this embodiment is applied to the leaching and recovery of metal element Fe in the primary smelting waste residue of a smelting enterprise. The primary smelting waste residue of this enterprise contains about 15.34% of the target element Fe, and the main existing form is in the form of Fe3O4 and ferrite. 20% (mass fraction) H2SO4 is used as the leaching solution, and the liquid-solid ratio is 1:5. The leaching reaction is carried out under normal temperature and pressure conditions.

[0033] Pull the pressing rod 3 upward. As Figure 1 shown in the figure, the pressing rod 3 drives the filter screen 8 to move to the top of the housing 1. At this time, the filter screen 8 is located above the solid feed pipe 5. The primary waste residue is conveyed from the solid waste feed pipe 5 into the housing 1, and sulfuric acid is pumped from the liquid feed pipe 6 into the housing 1. The first driving device 202 is turned on to make the stirring paddle 201 rotate in the housing 1, and the gas generated during the leaching process is discharged from the exhaust pipe 10 for subsequent treatment. After 2 hours of leaching time, the leaching process is completed. After standing for a period of time, as Figure 2 shown in the figure, the pressing rod 3 is pressed downward. The pressing rod 3 drives the filter screen 8 to move downward along the height direction of the housing 1 and squeeze the reaction liquid. The filter screen 8 moves to abut against the limiting plate 4, and the pressure filtration process is completed. After the filtrate is filtered by the filter screen 8, it is discharged through the diversion pipe 9 under the action of the delivery pump 13. The bottom plate 7 is removed, the filter residue is discharged from the bottom plate 7, and the bottom plate and the stirring paddle are cleaned. Through this device, the leaching rate of Fe element in the leaching solution is about 54%.

[0034] The content clarified in the above embodiments should be understood that these embodiments are only used to illustrate the present invention more clearly, rather than to limit the scope of the present invention. After reading the present invention, various equivalent forms of modification of these embodiments by those skilled in the art all fall within the scope defined by the appended claims of the present invention.

Claims

1. A solid-liquid reaction and separation device, characterized in that: It includes a housing (1), a diversion pipe (9), a vertically arranged pressure rod (3), a filter screen (8) and a stirring device (2) arranged inside the housing (1), and the stirring device (2) is arranged below the filter screen (8); One end of the pressure rod (3) penetrates the top wall of the housing (1) and is slidably connected to the top wall of the housing (1); the filter screen (8) is horizontally arranged, the top of the filter screen (8) is fixedly connected to the bottom of the pressure rod (3), and the side wall of the filter screen (8) is slidably connected to the inner side wall of the housing (1); One end of the diversion pipe (9) is connected to the top of the filter screen (8) and the other end penetrates the top wall of the housing (1) and extends to the outside of the housing (1); The upper part of the side wall of the housing (1) is provided with a solid feed pipe (5) and a liquid feed pipe (6), and the bottom of the housing (1) is provided with a detachable bottom plate (7).

2. The solid-liquid reaction and separation device according to claim 1, wherein: The stirring device (2) includes a stirring paddle (201) and a first driving device (202), and the stirring paddle (201) is arranged on the inner side wall of the bottom plate (7); the first driving device (202) is arranged on the outer side wall of the bottom plate (7), and the output end of the first driving device (202) penetrates the bottom plate (7) and is fixedly connected to the stirring paddle (201).

3. The solid-liquid reaction and separation device according to claim 2, characterized in that: A limiting plate (4) is arranged on the inner side wall of the housing (1), and the limiting plate (4) is arranged above the stirring paddle (201).

4. The solid-liquid reaction and separation device according to claim 2, wherein: The first driving device (202) is a motor.

5. The solid-liquid reaction and separation device according to claim 1, characterized in that: A diversion pipe (9) is arranged along the length direction inside the pressure rod (3), and the outer end of the diversion pipe (9) penetrates the top of the pressure rod (3) and extends to the outside of the housing (1).

6. The solid-liquid reaction and separation device according to claim 5, wherein: The outer end of the diversion pipe (9) is connected to a delivery pump (13).

7. The solid-liquid reaction and separation device according to claim 6, characterized in that: The diversion pipe (9) is a flexible hose that can be telescoped along the length direction.

8. The solid-liquid reaction and separation device according to claim 1, wherein: A second driving device is arranged on the outer end of the pressure rod (3), and under the action of the second driving device, the pressure rod (3) drives the filter screen (8) to move in a direction close to or away from the bottom plate (7).

9. The solid-liquid reaction and separation device according to claim 1, wherein: A first valve (11) is arranged on the solid feed pipe (5), and a second valve (12) is arranged on the liquid feed pipe (6).

10. The solid-liquid reaction and separation device according to claim 1, characterized in that: An exhaust pipe (10) is arranged on the top wall and / or side wall of the housing (1).

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