Low-viscosity high-impurity slurry material washing system

Abstract

The utility model provides a low-viscosity high-impurity slurry material washing system which comprises a feeding unit, a first screening unit, a first washing unit, a second screening unit, a second washing unit, a filter pressing unit and a pre-washing tank. The first washing unit comprises a first slurrying tank and a first slurry pump, and the first slurrying tank is communicated with the first collecting hopper; the second screening unit comprises a second separating sieve and a second collecting hopper, the upper part of the second separating sieve is communicated with the first slurry pump through a pipeline, the second washing unit comprises a second slurrying tank and a second slurry pump, and the second slurrying tank is communicated with the second collecting hopper; the filter pressing unit comprises a filter press and a filter pressing pump, the filter press is communicated with the second slurry pump, and the filter pressing pump is communicated with the pre-washing tank. According to the utility model, three-stage full washing can be carried out on materials, the washing effect is ensured, large impurities in the materials can be effectively screened, and the normal and stable operation of a washing system is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydrometallurgy, particularly to a low-viscosity high-impurity slurry material washing system. BACKGROUND

[0002] In the production process of metallurgy and chemical industry, the precipitates produced by solution reaction or the residues of liquid-solid reaction usually form slurry materials. In order to remove the impurities entrained in the precipitates or recover the valuable substances entrained in the precipitates, the slurry materials obtained by liquid-solid screening of the reaction system are usually washed.

[0003] At present, the washing system for slurry materials generally sets up multiple washing tanks and uses a washing agent to dissolve soluble substances to realize the screening of solid particles and soluble substances. Specifically, the soluble substances in the slurry materials are dissolved into the washing agent by water, electrolyte solution and other washing agents, wherein the soluble substances can be impurities or valuable substances.

[0004] However, in actual application, the above washing system cannot fully wash the soluble substances in the slurry materials of low-viscosity high-impurity such as anode mud, which affects the washing effect of subsequent unit operations, and cannot effectively treat the impurities such as part of large copper residues contained in the anode mud, which easily causes the pipes in the washing system to be blocked, seriously affecting the normal operation of the water pump and the entire washing system. SUMMARY

[0005] Therefore, the utility model aims at providing a low-viscosity high-impurity slurry material washing system, which can solve the technical problem that the washing system in the prior art cannot fully wash the soluble substances in the slurry materials of low-viscosity high-impurity such as anode mud, which affects the washing effect of subsequent unit operations, and cannot effectively treat the impurities such as part of large copper residues contained in the anode mud, which easily causes the pipes in the washing system to be blocked, seriously affecting the normal operation of the water pump and the entire washing system.

[0006] The utility model discloses a low-viscosity high-impurity slurry material washing system, which comprises a feeding unit, a first screening unit, a first washing unit, a second screening unit, a second washing unit, a filter pressing unit and a pre-washing tank.

[0007] The second screening unit comprises a second separating screen and a second collecting hopper arranged below the second separating screen, the second separating screen is communicated with the first slurry pump through a pipeline at the top, and the second washing unit comprises a second pulping tank and a second slurry pump communicated with an outlet end of the second pulping tank through a pipeline, an inlet end of the second pulping tank is communicated with an outlet end of the second collecting hopper through a pipeline.

[0008] The filter pressing unit comprises a filter press, a filter pressing pump communicated with an outlet end of the filter press through a pipeline, and an inlet end of the filter press is communicated with the second slurry pump through a pipeline, and the filter pressing pump is communicated with the pre-washing tank through a pipeline.

[0009] Compared with the prior art, the low-viscosity high-impurity slurry material washing system has the advantages that: the washing system can perform secondary and sufficient screening and interception on the large copper residues in the low-viscosity high-impurity slurry material such as anode mud, has good screening impurity effect, can effectively avoid the phenomenon of copper residue blocking pipelines and wearing equipment, can guarantee the normal and stable operation of the washing system, can perform three-stage sufficient washing on the material to obtain clean mud without large copper residues, has good washing effect, and specifically, the first screening unit and the second screening unit are arranged to screen and collect the copper residues contained in the material, the first washing unit, the second washing unit and the filter pressing unit are arranged to realize three-stage sufficient washing on the material, and the pre-washing tank is arranged to collect the filtrate and the washing liquid after filter pressing, so that the recycling of the filtrate and the washing liquid is realized.

[0010] In addition, the low-viscosity high-impurity slurry material washing system can have the following additional technical features.

[0011] Further, the feeding unit comprises a feeding hopper and a conveying belt arranged at an outlet end of the feeding hopper, and a transmission end of the conveying belt is provided with the first separating screen.

[0012] Further, a cross-shaped steel plate structure is arranged in the feeding hopper to cut the material.

[0013] Further, the mesh number of the screen of the first separating screen is 2 mesh-40 mesh.

[0014] Further, the mesh number of the screen of the second separating screen is 40 mesh-80 mesh.

[0015] Further, the first separating screen and the second separating screen are both linear vibrating screens.

[0016] Further, stirring structures are respectively arranged in the first pulping tank and the second pulping tank.

[0017] Further, the filter press is a plate-and-frame filter press. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Figure 1 is a structural schematic diagram of a low-viscosity high-impurity slurry material washing system according to the present application.

[0019] In the above drawings, reference numerals 10-feeding unit; 11-feeding hopper; 111-cross steel plate structure; 12-conveying belt; 20-first screening unit; 21-first separating screen; 22-liquid inlet spraying device; 23-first collecting hopper; 30-first washing unit; 31-first slurry tank; 32-first slurry pump; 40-second screening unit; 41-second separating screen; 42-second collecting hopper; 50-second washing unit; 51-second slurry tank; 52-second slurry pump; 60-filter pressing unit; 61-filter press; 62-filter pressing pump; 70-pre-washing tank.

[0020] The following detailed description will further describe the present application in conjunction with the above drawings. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The drawings show several embodiments of the present application. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0024] Reference will now be made to Figure 1The utility model discloses a low viscosity high sundry slurry material washing system, including feed unit 10, first screening unit 20, first washing unit 30, second screening unit 40, second washing unit 50, filter pressing unit 60 and prewash tank 70, wherein, first screening unit 20 and second screening unit 40 are used to screen and intercept the copper residue of large size in the material to avoid the situation that copper residue blocks the pipeline or wears the equipment, first washing unit 30, second washing unit 50 and filter pressing unit 60 constitute three -level washing to slurry containing material to fully wash the soluble matter in low viscosity high sundry slurry material such as anode mud, and prewash tank 70 is used to collect the filtrate and washing liquid generated by filter pressing unit 60 to realize the reuse of filtrate and washing liquid.

[0025] As an example, feed unit 10 includes a feed hopper 11 and a conveyor belt 12 provided at the outlet end of the feed hopper 11, and the transmission end of the conveyor belt 12 is provided with a first separation screen 21. As a specific example, in the present embodiment, the feed hopper 11 is provided directly above the conveyor belt 12, and the feed hopper 11 is provided with a cross steel plate structure 111 for cutting the material. The material cut by the cross steel plate structure 111 in the feed hopper 11 will fall onto the conveyor belt 12 and be conveyed to the first screening unit 20 for screening operation under the action of the conveyor belt 12.

[0026] As an example, the first screening unit 20 includes a first separation screen 21, a liquid inlet spraying device 22 provided above the first separation screen 21, and a first collection hopper 23 provided below the first separation screen 21. In the present embodiment, the first separation screen 21 is a linear vibrating screen, and the mesh size of the screen of the first separation screen 21 is 2 mesh-40 mesh. In actual application, the material conveyed to the screen surface of the first separation screen 21 by the conveyor belt 12 will move away from the conveyor belt 12 under the vibration of the first separation screen 21. In the process of moving, the liquid inlet spraying device 22 located above the first separation screen 21 will spray the material to slag the material, so that the large-size copper residue in the material can be intercepted on the screen of the first separation screen 21, and the slurry is transported to the first washing unit 30 through the pipeline connected to the outlet end of the first collection hopper 23 for primary slurry washing.

[0027] Further, the first washing unit 30 includes a first slurry tank 31 and a first slurry pump 32 in communication with the outlet end of the first slurry tank 31 through a pipeline. The inlet end of the first slurry tank 31 is in communication with the outlet end of the first collection hopper 23 through a pipeline, and the first slurry pump 32 is used to transport the slurry after primary slurry washing to the second screening unit 40 for secondary screening.

[0028] As an example, the second screening unit 40 comprises a second separation screen 41 and a second collection hopper 42 arranged below the second separation screen 41, the upper side of the second separation screen 41 is communicated with the first slurry pump 32 through a pipeline, in other words, a liquid inlet pipeline is arranged above the second separation screen 41, and the end of the liquid inlet pipeline away from the second separation screen 41 is communicated with the first slurry pump 32. In the embodiment, the second separation screen 41 is a linear vibrating screen, the mesh number of the screen of the second separation screen 41 is 40-80 meshes, the second separation screen 41 is used for screening and intercepting the copper residue with a smaller size in the slurry after the first slurry washing tank 31 is washed, and the screened slurry is transported to the second washing unit 50 through the pipeline connected with the outlet end of the second collection hopper 42 to be subjected to secondary slurry washing. It should be noted that the types of the first separation screen 21 and the second separation screen 41 in the present application are not limited to the linear vibrating screen in the embodiment, and can also be other screening devices that can achieve the purpose of the present application.

[0029] Further, the second washing unit 50 comprises a second slurry tank 51 and a second slurry pump 52 communicated with the outlet end of the second slurry tank 51 through a pipeline, the inlet end of the second slurry tank 51 is communicated with the outlet end of the second collection hopper 42 through a pipeline, and the second slurry pump 52 is used for transporting the slurry after the secondary slurry washing to the filter pressing unit 60 for filter pressing washing.

[0030] Further, the first slurry tank 31 and the second slurry tank 51 are respectively provided with a stirring structure, the stirring structure is used for fully stirring the slurry entering the first slurry tank 31 or the second slurry tank 51, so as to improve the washing effect of the slurry in the first slurry tank 31 or the second slurry tank 51.

[0031] Further, the slurry washing time of the first slurry tank 31 and the second slurry tank 51 to the slurry is 0.5h-3h, so as to ensure that the slurry can be fully washed in the first slurry tank 31 or the second slurry tank 51.

[0032] As an example, the filter pressing unit 60 comprises a filter press 61, a filter pressing pump 62 communicated with the outlet end of the filter press 61 through a pipeline, the inlet end of the filter press 61 is communicated with the second slurry pump 52 through a pipeline, and the filter pressing pump 62 is communicated with the pre-washing tank 70 through a pipeline. As a specific example, in the embodiment, the filter press 61 is a plate-and-frame filter press. It should be noted that the type of the filter press 61 in the present application is not limited to the plate-and-frame filter press in the embodiment, and can also be other filter pressing devices that can achieve the purpose of the present application.

[0033] In actual use, the working steps of the low-viscosity high-impurity slurry material washing system can be: using a crane to hoist a ton bag containing material, and pouring the material in the ton bag into the feed hopper 11, the material will be cut by the cross steel plate structure 111 in the feed hopper 11 first, and then fall on the conveying belt 12 from the lower outlet of the feed hopper 11, under the action of the conveying belt 12, the material will be conveyed to the screen of the first separating screen 21, and the material will be walked away from the conveying belt 12 under the vibration of the first separating screen 21, in the walking process, the liquid inlet spraying device 22 located above the first separating screen 21 will spray the material to slag the material, so that the large-size copper slag in the material can be intercepted on the screen surface of the first separating screen 21 and collected from the side of the first separating screen 21 away from the conveying belt 12, and the slurry obtained by spraying falls into the first collecting hopper 23 located below the first separating screen 21, and is transported to the first slurry tank 31 through the pipeline connected with the outlet end of the first collecting hopper 23 for primary slurry washing.

[0034] When the slurry is washed in the first slurry tank 31, the slurry will be conveyed to the upper side of the second separating screen 41 through the pipeline under the action of the first slurry pump 32, so as to perform secondary screening on the small-size copper slag contained in the slurry, the copper slag obtained by secondary screening will be walked to the side of the second separating screen 41 away from the first slurry pump 32 under the vibration of the second separating screen 41, and the screened slurry falls into the second collecting hopper 42 located below the second separating screen 41, and is transported to the second slurry tank 51 through the pipeline connected with the outlet end of the second collecting hopper 42 for secondary slurry washing.

[0035] When the slurry is washed in the second slurry tank 51, the slurry will be conveyed to the filter press 61 through the pipeline under the action of the second slurry pump 52 for pressure filtration, after the pressure filtration operation is completed, washing water is poured into the filter press 61 to perform tertiary washing on the slurry, and the filtrate and washing liquid generated by the pressure filtration are collected into the pre-washing tank 70 through the pressure filtration pump 62, so as to realize the purpose of recycling.

[0036] The low-viscosity high-impurity slurry material washing system has the advantages that the washing system can perform secondary and sufficient screening and interception on part of the large copper residues in the slurry material of the low-viscosity high-impurity material such as anode mud, has good screening impurity effect, can effectively avoid the phenomenon of copper residue blocking pipelines and wearing equipment, can guarantee normal and stable operation of the washing system, can perform three-stage sufficient washing on the material to obtain clean mud without large copper residues, has good washing effect, and the first screening unit and the second screening unit are arranged to screen and collect the copper residues contained in the material, the first washing unit, the second washing unit and the pressure filtration unit are arranged to realize three-stage sufficient washing on the material, and the pre-washing tank is arranged to collect the filtrate and the washing liquid after pressure filtration, so that the recycling of the filtrate and the washing liquid is realized.

[0037] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The above-described embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it cannot be understood as the limitation of the application scope of the present application. It should be noted that, for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A low-viscosity high-solids slurry material washing system, characterized by, The device comprises a feeding unit, a first screening unit, a first washing unit, a second screening unit, a second washing unit, a filter pressing unit and a pre-washing tank, the first screening unit comprises a first separating screen, a liquid inlet spraying device arranged above the first separating screen and a first collecting hopper arranged below the first separating screen, the first washing unit comprises a first pulping tank and a first slurry pump communicated with an outlet end of the first pulping tank through a pipeline, an inlet end of the first pulping tank is communicated with an outlet end of the first collecting hopper through a pipeline; the second screening unit comprises a second separating screen and a second collecting hopper arranged below the second separating screen, an upper portion of the second separating screen is communicated with the first slurry pump through a pipeline, the second washing unit comprises a second pulping tank and a second slurry pump communicated with an outlet end of the second pulping tank through a pipeline, an inlet end of the second pulping tank is communicated with an outlet end of the second collecting hopper through a pipeline; the filter pressing unit comprises a filter press, a filter pressing pump communicated with an outlet end of the filter press through a pipeline, an inlet end of the filter press is communicated with the second slurry pump through a pipeline, the filter pressing pump is communicated with the pre-washing tank through a pipeline.

2. The low viscosity high solids slurry material washing system according to claim 1, wherein, The feeding unit comprises a feeding hopper and a conveying belt arranged at an outlet end of the feeding hopper, a transmission end of the conveying belt is provided with the first separating screen.

3. The low viscosity high solids slurry washing system of claim 2, wherein, A cross-shaped steel plate structure for cutting the material is arranged in the feeding hopper.

4. The low viscosity high solids slurry washing system of claim 1, wherein, The first separating screen has a mesh number of 2-40 meshes.

5. The low viscosity high solids slurry washing system of claim 1, wherein, The second separating screen has a mesh number of 40-80 meshes.

6. The low viscosity high solids slurry washing system of claim 1, wherein, The first separating screen and the second separating screen are both linear vibrating screens.

7. The low viscosity high solids slurry washing system of claim 1, wherein, A stirring structure is arranged in each of the first pulping tank and the second pulping tank.

8. The low viscosity high solids slurry washing system of claim 1, wherein, The filter press is a plate-and-frame filter press.

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