Potassium chloride tail salt recovery system
By combining a linear dewatering screen and a stirring and dissolving device, the problems of space occupation and high water consumption in potassium chloride tailings recovery are solved, achieving efficient and low-cost potassium chloride tailings recovery.
Patent Information
- Application Number
- CN202520051931.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-09
AI Technical Summary
In existing methods for recovering potassium chloride tailings, direct stockpiling and solid-liquid separation cannot recover solid potassium chloride, which takes up space and increases transportation costs. Direct dissolution and recovery, on the other hand, consumes a lot of water and has high electricity costs.
Solid-liquid separation is achieved using a linear dewatering screen. Potassium chloride solid is dissolved by stirring and dissolving in nanofiltration water using a stirring and dissolving device. The liquid is then recovered through a salt field drying system. The dissolution process is optimized by adjusting the nanofiltration water volume using an ion content measuring instrument and controlling the stirring speed using a frequency converter.
It improves potassium chloride recovery efficiency, reduces water and electricity consumption, and has a low potassium chloride solid content in tailings, achieving efficient recovery.
Smart Images
Figure CN223846675U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to potassium chloride tail salt recovery technical field, specifically related to a kind of potassium chloride tail salt recovery system. BACKGROUND
[0002] At present, for the recovery of potassium chloride tailings (tail liquid), there are mainly two recovery methods, the first is to directly transport the tail salt from the workshop to the tail salt yard for centralized stacking by the tail salt pump, and to perform solid-liquid separation naturally, and the second is to use a tail salt recovery device to dissolve and recover potassium chloride. However, both of these two recovery methods have defects, among which, the first recovery method of centralized stacking and natural solid-liquid separation can only realize the direct recovery and utilization of the potassium chloride liquid in the tail salt in the salt field solarization system, while the potassium chloride solid cannot be directly recovered and utilized. Moreover, centralized stacking not only occupies the space of the factory area, but also increases the secondary transportation cost when it is recovered and utilized for the second time. The second recovery method of using a tail salt recovery device to dissolve and recover potassium chloride can further reduce the content of potassium chloride solid in the finally discharged tail salt. However, due to the high proportion of liquid phase in the tail salt from the workshop, which is usually close to saturation state between 60-70%, a large amount of water needs to be injected for direct dissolution, which increases the water input cost and the power operation cost of related equipment.
[0003] Therefore, there is an urgent need for a potassium chloride tail salt recovery system to solve the above problems. SUMMARY
[0004] The utility model aims at solving the problems in the above background technical field, and provides a potassium chloride tail salt recovery system.
[0005] The technical scheme of the utility model is as follows:
[0006] A potassium chloride tail salt recovery system, comprising a linear dewatering screen, for performing solid-liquid separation treatment on the tail salt from the workshop to obtain potassium chloride solid and liquid after pretreatment;
[0007] A stirring and dissolving device, for stirring and dissolving the potassium chloride solid after pretreatment under the action of nanofiltration water to obtain potassium chloride solid and liquid after deep treatment;
[0008] A salt field solarization system, for performing solarization recovery treatment on the potassium chloride liquid from the linear dewatering screen and / or the stirring and dissolving device.
[0009] Preferably, the stirring dissolving device comprises a stirring motor, a shaft coupling, a mounting base, a stirring tank, a stirring shaft and an impeller, the stirring tank is arranged below the mounting base, the stirring motor is arranged on the mounting base, a driving shaft of the stirring motor is connected with an extended end of the stirring shaft arranged axially inside the stirring tank through the shaft coupling, and a plurality of impellers are arranged on a stirring tank end of the stirring shaft.
[0010] Preferably, an ion content measuring instrument is arranged on an inner bottom of the stirring tank, and the injection amount of the nanofiltration water is adjusted according to the content of the target ion in the liquid.
[0011] Preferably, the stirring tank comprises a nanofiltration water port, a feeding port and a discharging port, the nanofiltration water port is connected with a nanofiltration water supply device, the feeding port is connected with the potassium chloride solid discharging port of the linear dehydration screen, and the discharging port is used for discharging the potassium chloride solid and liquid after deep treatment and making the potassium chloride liquid enter the salt field solarization system.
[0012] Preferably, the nanofiltration water port and the feeding port are arranged on the top of the stirring tank, and the discharging port is arranged on the bottom of the stirring tank.
[0013] Preferably, the discharging port is funnel-shaped.
[0014] Preferably, the stirring motor is further connected with a frequency conversion device, and the stirring speed is controlled.
[0015] Preferably, the impeller is fan-shaped.
[0016] Preferably, a rack is further arranged, the stirring motor is arranged on the mounting base through the rack, and the shaft coupling is arranged inside the rack.
[0017] Preferably, a plurality of supports are arranged on the outer side of the stirring tank.
[0018] According to the above technical scheme, based on the potassium chloride tail salt recovery system, the solid-liquid separation of the tail salt from the workshop can be realized through the linear dehydration screen, so that only the separated potassium chloride solid needs to be transported to the stirring dissolving device for stirring and dissolving, and the separated potassium chloride liquid can be directly transported to the salt field solarization system for recovery, thereby not only improving the recovery efficiency of the potassium chloride in the tail salt, but also avoiding the problems of high water consumption and poor dissolving effect caused by directly dissolving the tail salt from the workshop, and the potassium chloride solid content in the tail salt finally discharged from the stirring dissolving device is low, the potassium chloride tail salt recovery efficiency is high, and the water consumption and power consumption are low. BRIEF DESCRIPTION OF DRAWINGS
[0019] Fig. 1 is a structural schematic view of a potassium chloride tail salt recovery system;
[0020] Fig. 2 Figure 1 is a structural schematic diagram of a stirring dissolving device of a potassium chloride tail salt recovery system.
[0021] Legend of reference signs
[0022] 10, stirring dissolving device; 1, stirring motor; 2, coupling; 3, frame; 4, mounting bottom plate; 5, stirring tank; 6, stirring shaft; 7, impeller. DETAILED DESCRIPTION
[0023] The specific embodiments of the utility model will be described in detail below. It should be understood that the specific embodiments described herein are only used to illustrate and explain the utility model embodiments, and are not used to limit the utility model embodiments.
[0024] In the description of the present application, the term "comprising" and any variation thereof means non-exclusive inclusion, possible existence or addition of one or more other features, units, components and / or combinations thereof.
[0025] In addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0026] The utility model provides a kind of potassium chloride tail salt recovery system, as shown in Figure Figs. 1-2 The potassium chloride tail salt recovery system comprises:
[0027] Linear dehydration screen, for solid-liquid separation treatment to tail salt from workshop, to obtain potassium chloride solid and liquid after pretreatment;
[0028] Stirring dissolving device 10, for stirring and dissolving potassium chloride solid after pretreatment under the action of nanofiltration water, to obtain potassium chloride solid and liquid after deep treatment;
[0029] Salt field solarization system, for salt field solarization recovery treatment to potassium chloride liquid from the linear dehydration screen and / or the stirring dissolving device 10.
[0030] According to the technical scheme, based on the potassium chloride tail salt recovery system, the solid-liquid separation of the tail salt from the workshop is realized by the linear dehydration screen, so that only the separated potassium chloride solids need to be transported to the stirring and dissolving device for stirring and dissolving, and the separated potassium chloride liquid can be directly transported to the salt field for recovery, thereby improving the recovery efficiency of potassium chloride in the tail salt, avoiding the problems of high water consumption and poor dissolving effect caused by directly dissolving the tail salt from the workshop, and having the advantages of low potassium chloride solid content in the tail salt discharged from the stirring and dissolving device, high potassium chloride tail salt recovery efficiency, low water consumption and low power consumption.
[0031] In the potassium chloride tail salt recovery system, preferably, as shown in Fig. 2 The stirring and dissolving device 10 comprises a stirring motor 1, a shaft coupling 2, a mounting bottom plate 4, a stirring tank 5, a stirring shaft 6 and impellers 7, the stirring tank 5 is arranged below the mounting bottom plate 4, the stirring motor 1 is arranged on the mounting bottom plate 4, the driving shaft of the stirring motor 1 is connected with the outer extension end of the stirring shaft 6 arranged in the stirring tank 5 through the shaft coupling 2, and the stirring tank end of the stirring shaft 6 is provided with a plurality of impellers 7. In actual application, the potassium chloride solids after the solid-liquid separation of the linear dehydration screen enter the stirring tank 5, the water molecules in the stirring tank 5 continuously make irregular thermal motion, on the surface of the solid particles, the water molecules interact with the ions on the surface of the potassium chloride solid crystal, due to the thermal motion of the water molecules, they gradually diffuse to the surface of the solid particles, and at the same time, the potassium chloride ions on the surface of the solid particles also diffuse into the solvent. + and Cl - ions form hydrated ions in the way of water molecules and K + and Cl -The ions hydrate with water molecules. Hydration is an exothermic process that releases energy that helps to overcome the ionic bond energy in the potassium chloride crystals, allowing the ions to break free from the crystal structure and enter the solution. This chemical process works in conjunction with the physical processes of diffusion and convection to improve the dissolution of the potassium chloride tail salt solids in the stirred tank 5.
[0032] In the potassium chloride tail salt recovery system, preferably, the inner bottom of the stirring tank 5 is provided with an ion content measuring instrument, which is used to adjust the injection amount of nanofiltration water according to the content of the target ion in the liquid, so as to further improve the dissolution efficiency and effect of potassium chloride solids and reduce the water consumption. Specifically, the target ion may be potassium ion.
[0033] In the potassium chloride tail salt recovery system, in a specific embodiment, the stirring tank 5 includes a nanofiltration water inlet, a feed inlet and a discharge outlet, the nanofiltration water inlet is connected with a nanofiltration water supply device, the feed inlet is connected with the potassium chloride solid discharge outlet of the linear dewatering screen, and the discharge outlet is used to discharge the potassium chloride solids and liquid after deep treatment, and the potassium chloride liquid therein enters the salt field solarization system. More specifically, the nanofiltration water inlet and the feed inlet are both arranged at the top of the stirring tank 5, and the discharge outlet is arranged at the bottom of the stirring tank 5, so as to facilitate feeding and discharging.
[0034] In another specific embodiment, the discharge outlet is funnel-shaped, so as to further facilitate the discharge of the potassium chloride solids and liquid after deep treatment. Specifically, a solid-liquid separation structure similar to a screen can be further arranged at the discharge outlet, so that the potassium chloride liquid after deep treatment can better enter the salt field solarization system for direct recycling. Compared with the content of potassium chloride solids in the tail salt discharged from the workshop under the initial condition, the content of potassium chloride solids in the tail salt after deep treatment by the stirring and dissolving device 10 has been reduced from 30-40% to less than 10%.
[0035] In the potassium chloride tail salt recovery system, preferably, the stirring motor 1 is further connected with a frequency conversion device, which is used to control the stirring speed, so as to further improve the stirring and dissolving effect of the tail salt.
[0036] In another preferred embodiment, the impeller 7 is fan-shaped, so as to better form a circulating flow and improve the stirring and dissolving effect of the tail salt.
[0037] In the potassium chloride tail salt recovery system, in a specific embodiment, a rack 3 is further included, the stirring motor 1 is arranged on the mounting bottom plate 4 through the rack 3, and the shaft coupling 2 is arranged in the interior of the rack 3. In another specific embodiment, a plurality of supports are mounted on the outer side of the stirring tank 5.
[0038] The utility model will be described in detail through examples below, but the protection scope of the utility model is not limited to this.
[0039] Example 1
[0040] The potassium chloride tail salt recovery system as shown in Figs. 1-2 is used for recovering potassium chloride tail salt in a workshop, and specifically, the potassium chloride tail salt recovery system comprises:
[0041] A linear dewatering screen is used for solid-liquid separation treatment of tail salt from the workshop to obtain potassium chloride solids and liquid after pretreatment.
[0042] A stirring and dissolving device 10 is used for stirring and dissolving the potassium chloride solids after pretreatment under the action of nanofiltration water to obtain potassium chloride solids and liquid after deep treatment.
[0043] A salt field solarization system is used for solarization recovery treatment of potassium chloride liquid from the linear dewatering screen and / or the stirring and dissolving device.
[0044] Specifically, the stirring and dissolving device 10 comprises a stirring motor 1, a coupling 2, a mounting bottom plate 4, a stirring tank 5, a stirring shaft 6 and impellers 7, the stirring tank 5 is arranged below the mounting bottom plate 4, the stirring motor 1 is arranged on the mounting bottom plate 4, a driving shaft thereof is connected with an outward extending end of the stirring shaft 6 arranged axially inside the stirring tank 5 through the coupling 2, and a plurality of impellers 7 are arranged on the stirring tank end of the stirring shaft 6; a rack 3 is further arranged, the stirring motor 1 is arranged on the mounting bottom plate 4 through the rack 3, and the coupling 2 is arranged inside the rack 3; a plurality of supports are arranged on the outer side of the stirring tank 5; the stirring tank 5 comprises a nanofiltration water inlet, a feeding inlet and a discharging outlet, the nanofiltration water inlet is connected with a nanofiltration water supply device, the feeding inlet is connected with a potassium chloride solid discharging outlet of the linear dewatering screen, the discharging outlet is used for discharging potassium chloride solids and liquid after deep treatment and making potassium chloride liquid therein enter the salt field solarization system; the nanofiltration water inlet and the feeding inlet are arranged at the top of the stirring tank 5, and the discharging outlet is arranged at the bottom of the stirring tank 5; and the discharging outlet is funnel-shaped.
[0045] In actual application, tail salt from the workshop is subjected to solid-liquid separation treatment through the linear dehydration screen, the obtained potassium chloride solid after pretreatment enters the stirring tank 5 of the stirring and dissolving device 10, the potassium chloride solid is subjected to deep dissolving treatment under the action of the stirring motor 1, the impeller 7 and the nanofiltration water, the obtained potassium chloride liquid after pretreatment is directly delivered to the salt field solarization system for solarization recovery treatment, and finally the potassium chloride liquid subjected to deep dissolving treatment through the stirring and dissolving device 10 is also delivered to the salt field solarization system for solarization recovery treatment.
[0046] Through detection, compared with the recovery mode of directly centralized stacking and natural solid-liquid separation and the recovery mode of directly adding water for dissolving in the prior art, the potassium chloride tail salt recovery system has the advantages that the recovery efficiency of potassium chloride in the tail salt is improved, the problem of high water consumption and poor dissolving effect caused by directly dissolving the tail salt from the workshop is avoided, the content of potassium chloride solid in the tail salt finally discharged through the stirring and dissolving device is low, the recovery efficiency of potassium chloride tail salt is high, and the amount of water consumption and power consumption is small.
[0047] Embodiment 2
[0048] With reference to embodiment 1, different from embodiment 1 is that the inner bottom of the stirring tank 5 is provided with an ion content measuring instrument for adjusting the injection amount of the nanofiltration water according to the content of the target ion in the liquid, the stirring motor 1 is further connected with a frequency conversion device for controlling the stirring speed, and the impeller 7 is a fan shape.
[0049] Through detection, compared with the scheme in embodiment 1, by optimizing the injection amount of the nanofiltration water, the stirring speed of the stirring motor 1 and the shape of the impeller 7 in the process of dissolving the potassium chloride solid, the dissolving effect and efficiency of the potassium chloride solid can be further effectively improved.
[0050] The potassium chloride tail salt recovery system provided by the utility model can realize solid-liquid separation of the tail salt from the workshop through the linear dehydration screen, so that only the separated potassium chloride solid needs to be delivered to the stirring and dissolving device for stirring and dissolving, and the separated potassium chloride liquid can be directly delivered to the salt field solarization system for recovery, thereby improving the recovery efficiency of potassium chloride in the tail salt, avoiding the problem of high water consumption and poor dissolving effect caused by directly dissolving the tail salt from the workshop, and having the advantages that the content of potassium chloride solid in the tail salt finally discharged through the stirring and dissolving device is low, the recovery efficiency of potassium chloride tail salt is high, and the amount of water consumption and power consumption is small.
[0051] The preferred embodiments of the present application are described in detail above, but the present application is not limited thereto. Within the technical concept of the present application, various simple modifications can be made to the technical solution of the present application. In order to avoid unnecessary repetition, the present application will not further describe various possible combination manners. However, these simple modifications and combinations should also be considered as the disclosed content of the present application, and all belong to the protection scope of the present application.
Claims
1. A potassium chloride tail salt recovery system characterized by, The potassium chloride tail salt recovery system comprises: a linear dewatering screen for performing solid-liquid separation treatment on tail salt from a workshop to obtain potassium chloride solids after pretreatment and liquid; a stirring and dissolving device (10) for stirring and dissolving the potassium chloride solids after pretreatment under the action of nanofiltration water to obtain potassium chloride solids after deep treatment and liquid; a salt field solarization system for performing solarization recovery treatment on potassium chloride liquid from the linear dewatering screen and / or the stirring and dissolving device (10).
2. The potassium chloride tail salts recovery system of claim 1, wherein, The stirring and dissolving device (10) comprises a stirring motor (1), a coupling (2), a mounting bottom plate (4), a stirring tank (5), a stirring shaft (6) and an impeller (7), the stirring tank (5) is arranged below the mounting bottom plate (4), the stirring motor (1) is arranged on the mounting bottom plate (4), the driving shaft of the stirring motor (1) is connected with the outer end of the stirring shaft (6) arranged axially inside the stirring tank (5) through the coupling (2), and a plurality of impellers (7) are arranged on the stirring tank end of the stirring shaft (6).
3. The potassium chloride tail salts recovery system of claim 2, wherein, An ion content measuring instrument is arranged on the inner bottom of the stirring tank (5) to adjust the injection amount of nanofiltration water according to the content of target ions in the liquid.
4. The potassium chloride tail salts recovery system of claim 2, wherein, The stirring tank (5) comprises a nanofiltration water port, a feed port and a discharge port, the nanofiltration water port is connected with a nanofiltration water supply device, the feed port is connected with the potassium chloride solid discharge port of the linear dewatering screen, the discharge port is used for discharging potassium chloride solids and liquid after deep treatment, and the potassium chloride liquid therein enters the salt field solarization system.
5. The potassium chloride tail salts recovery system of claim 4, wherein, The nanofiltration water port and the feed port are arranged on the top of the stirring tank (5), and the discharge port is arranged on the bottom of the stirring tank (5).
6. The potassium chloride tail salts recovery system of claim 4 or 5, wherein, The discharge port is funnel-shaped.
7. The potassium chloride tail salts recovery system of claim 2, wherein, The stirring motor (1) is also connected with a frequency conversion device to control the stirring speed.
8. The potassium chloride tail salts recovery system of claim 2, wherein, The impeller (7) is fan-shaped.
9. The potassium chloride tail salts recovery system of claim 2, wherein, A rack (3) is further arranged, the stirring motor (1) is arranged on the mounting bottom plate (4) through the rack (3), and the coupling (2) is arranged inside the rack (3).
10. The potassium chloride tail salts recovery system of claim 2, wherein, A plurality of supports are arranged on the outer side of the stirring tank (5).