SK type pipeline mixing improvement device

Abstract

An improved SK type pipeline mixing device comprises a dynamic mixing pipeline, a mixing transition pipeline and a static mixing pipeline which are sequentially arranged, one end of the dynamic mixing pipeline is communicated with an external tailing pulp overflow pipeline, and the other end of the dynamic mixing pipeline is communicated with one end of the mixing transition pipeline. The other end of the mixing transition pipeline is communicated with one end of a static mixing pipeline, and the other end of the static mixing pipeline is communicated with a feeding pipeline of an external belt filter press; the dynamic mixing pipeline is provided with a dynamic stirring mechanism, and the dynamic mixing pipeline on one side, close to the external tailing pulp overflow pipeline, of the dynamic stirring mechanism is also provided with a dosing port for adding PAM liquid medicine; an SK mixing module is arranged in the static mixing pipeline and comprises a plurality of spiral plates which are designed in a twisted manner. Ore pulp and PAM liquid medicine can be fully mixed again, so that the flocculation effect is improved, the usage amount of the PAM liquid medicine is reduced by 15%, and the usage amount of the PAM is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ore dressing, especially a SK type pipeline mixing improved device. BACKGROUND

[0002] In the mining and processing flow of rutile, garnet and omphalite, the ore dressing link is particularly key, however, challenges are faced in the overflow pipeline system of tailing treatment of ore dressing: especially the ore pulp flow rate of the horizontal section of the front end of the pipeline is too low (lower than 0.5 m / s), which not only limits the application of the static pipeline mixer, but also causes the PAM flocculant to be insufficiently mixed with the ore pulp due to the ore pulp not filling the pipeline, secondly, the insufficient mixing not only reduces the flocculation efficiency, but also forces the use amount of PAM liquid medicine to be increased, thereby aggravating the cost burden, and the insufficiently mixed liquid medicine is easy to adhere to the filter belt of the filter press, hinders the water permeability of the filter belt and affects the overall treatment efficiency. SUMMARY

[0003] The utility model solves the technical problem in the prior art and provides an SK type pipeline mixing improved device which can sufficiently mix ore pulp and PAM liquid medicine again, thereby improving flocculation effect, reducing the use amount of PAM liquid medicine by 15% and greatly reducing the use amount of PAM.

[0004] The technical problem solved by the utility model is solved by the following technical scheme. The utility model is an SK type pipeline mixing improved device, which comprises dynamic mixing pipelines, a mixing transition pipeline and a static mixing pipeline arranged in sequence, one end of the dynamic mixing pipeline is communicated with an external tailing ore pulp overflow pipeline, the other end of the dynamic mixing pipeline is communicated with one end of the mixing transition pipeline, the other end of the mixing transition pipeline is communicated with one end of the static mixing pipeline, and the other end of the static mixing pipeline is communicated with a feeding pipeline of an external belt filter press.

[0005] A dynamic stirring mechanism is installed on the dynamic mixing pipeline, the dynamic stirring mechanism comprises a stirring shaft vertically rotatably installed on the dynamic mixing pipeline, one end of the stirring shaft is arranged in the dynamic mixing pipeline and is provided with a stirring paddle, the other end of the stirring shaft is arranged outside the dynamic mixing pipeline, a driving device for driving the stirring shaft to dynamically stir and mix the ore pulp is installed on the outer wall of the dynamic mixing pipeline, and a dosing opening for adding PAM liquid medicine is arranged on the dynamic mixing pipeline close to the side of the external tailing ore pulp overflow pipeline.

[0006] An SK mixing module is arranged in the static mixing pipeline, the SK mixing module comprises a plurality of twisted spiral plates, and a spiral mixing gap for changing the flow state of the ore pulp is left between the spiral plates and the static mixing pipeline.

[0007] The technical problems to be solved by the utility model further can be further realized through following technical scheme, for the above-mentioned SK type pipeline mixing improved device, the butt flange for mutual connection is installed at both ends of dynamic mixing pipeline, mixing transition pipeline and static mixing pipeline.

[0008] The technical problems to be solved by the utility model further can be further realized through following technical scheme, for the above-mentioned SK type pipeline mixing improved device, the rotating dynamic seal is installed at the joint of stirring shaft and dynamic mixing pipeline, the driving equipment is speed reducer motor, and the motor shaft of speed reducer motor is in transmission connection with stirring shaft through shaft coupling.

[0009] The technical problems to be solved by the utility model further can be further realized through following technical scheme, for the above-mentioned SK type pipeline mixing improved device, the mixing transition pipeline includes horizontal section and inclined section arranged in sequence, the horizontal section is communicated with dynamic mixing pipeline, the end of inclined section with higher height is connected with horizontal section, and the end of inclined section with lower height is communicated with static mixing pipeline.

[0010] The technical problems to be solved by the utility model further can be further realized through following technical scheme, for the above-mentioned SK type pipeline mixing improved device, the inclination angle of inclined section is 10 °-25 °.

[0011] The technical problems to be solved by the utility model further can be further realized through following technical scheme, for the above-mentioned SK type pipeline mixing improved device, the spiral plate is 180 ° or 270 ° spiral plate.

[0012] The technical problems to be solved by the utility model further can be further realized through following technical scheme, for the above-mentioned SK type pipeline mixing improved device, the dynamic mixing pipeline is horizontally arranged, and the static mixing pipeline is obliquely arranged.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] 1、 the utility model combines dynamic stirring mechanism and SK mixing module in static mixing pipeline, realizes the sufficient mixing of ore pulp and PAM liquid, dynamic stirring mechanism can ensure that ore pulp is subjected to strong stirring action in flowing process, and the spiral plate in static mixing pipeline further promotes the mixing of ore pulp through its distortion design, thereby improving the overall mixing efficiency;

[0015] 2、 due to the more fully mixed pulp and PAM liquid, so can significantly improve the flocculation effect, PAM as flocculant, its role is to promote the particles in the pulp coagulation into larger lumps, easy to follow-up filtration and separation, through the device, can make the PAM flocculation effect more fully play, thereby improving the efficiency and quality of the whole process;

[0016] 3、 due to the improvement of mixing efficiency, PAM liquid dispersion in the pulp is more uniform, so can significantly reduce the use of PAM, according to the actual use, the device can reduce 15% of PAM liquid use, which is of great significance to reduce production cost and environmental protection requirements;

[0017] 4、 the device adopts modular design, dynamic mixing pipeline, mixing transition pipeline and static mixing pipeline are sequentially arranged, compact structure and easy to install and maintain, at the same time, dynamic stirring mechanism and SK mixing module are also convenient to disassemble and clean, ensure the long-term stable operation of the equipment;

[0018] 5、 the device can be applied to different concentration of pulp and different kinds of PAM liquid, has strong adaptability, at the same time, through adjusting the stirring speed of dynamic stirring mechanism and spiral plate design in SK mixing module, can realize flexible response to different processing requirements. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A structural diagram of the present application. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] Refer to Figure 1The application discloses an improved SK type pipeline mixing device which comprises a dynamic mixing pipeline 2, a mixing transition pipeline 3 and a static mixing pipeline 4 arranged in sequence to form a continuous and efficient mixing system.

[0022] The dynamic mixing pipeline 2 is used for preliminarily mixing the tailing slurry and PAM liquid, and a dynamic stirring mechanism is arranged on the dynamic mixing pipeline 2. The dynamic stirring mechanism comprises a stirring shaft 9 vertically rotatably arranged on the dynamic mixing pipeline 2, wherein one end of the stirring shaft 9 is arranged in the dynamic mixing pipeline 2 and is provided with a stirring paddle 10, and the other end of the stirring shaft 9 is arranged outside the dynamic mixing pipeline 2. A driving device 8 is arranged on the outer wall of the dynamic mixing pipeline 2 and is used for driving the stirring shaft 9 to dynamically stir and mix the slurry with the stirring paddle 10. A dosing port 7 is arranged on the dynamic mixing pipeline 2 close to the side of the dynamic stirring mechanism which is close to the external tailing slurry overflow pipeline 1, and is used for adding the PAM liquid. The stirring shaft 9 is driven by the driving device 8 to rotate in the dynamic mixing pipeline 2, so that the PAM liquid added through the dosing port 7 is dynamically stirred and mixed with the slurry, thereby improving the mixing efficiency.

[0023] Preferably, a rotary dynamic seal is arranged at the joint between the stirring shaft 9 and the dynamic mixing pipeline 2, so as to ensure the sealing of the dynamic mixing pipeline 2 and not to affect the rotation of the stirring shaft 9. The driving device 8 is a speed reducer, and the motor shaft of the speed reducer is in transmission connection with the stirring shaft 9 through a shaft coupling. The dynamic stirring mechanism is installed in the following manner: firstly, an opening is formed at the top of the dynamic mixing pipeline 2, then the stirring shaft 9 and the rotary dynamic seal are installed at the opening, then the speed reducer is installed and is in butt joint with the stirring shaft 9, and finally the stirring paddle 10 is inserted into the dynamic mixing pipeline 2 from one side of the dynamic mixing pipeline 2 and is clamped to the stirring shaft 9. In order to facilitate the installation of the stirring paddle 10, the dynamic mixing pipeline 2 is short, or the stirring shaft 9 is arranged close to one side of the dynamic mixing pipeline 2.

[0024] The mixing transition pipe 3 is used as a transition between dynamic mixing and static mixing, and gradually transitions the ore slurry from a dynamic stirring state to a static mixing state; the mixing transition pipe 3 comprises a horizontal section and an inclined section arranged in sequence, the horizontal section is in communication with the dynamic mixing pipe 2, the inclined section is connected with the horizontal section at a high end, and the inclined section is in communication with the static mixing pipe 4 at a low end, which helps to generate turbulent flow of the ore slurry in the flowing process, further promotes mixing, and avoids sudden decline of the mixing effect; preferably, the inclined angle of the inclined section is 10°-25°, and the specific inclined angle is determined according to the actual situation, and the ore slurry flow rate can be ensured to be more than 1.5 m / s.

[0025] The static mixing pipe 4 is used for further static mixing of the ore slurry, and improves the mixing uniformity; the SK mixing module is arranged in the static mixing pipe 4, the SK mixing module comprises a plurality of twisted spiral plates 11, a spiral mixing gap 12 for changing the flow state of the ore slurry is left between the spiral plates 11 and the static mixing pipe 4, and the PAM liquid and the ore slurry are further mixed; preferably, the spiral plate 11 is a 180° or 270° spiral plate 11.

[0026] In actual use, the dynamic mixing pipe 2 is horizontally arranged, which is convenient for stable flow and mixing of the ore slurry, and the static mixing pipe 4 is arranged in an inclined manner, which is helpful for smooth flow of the ore slurry under the action of gravity, and improves the mixing effect.

[0027] The actual use process of the device is as follows:

[0028] I. preliminary mixing stage

[0029] The tailing ore slurry enters the dynamic mixing pipe 2 through the external tailing ore slurry overflow pipe 1;

[0030] The PAM liquid is added into the dynamic mixing pipe 2 through the dosing port 7, and preliminarily contacts with the ore slurry;

[0031] The stirring shaft 9 is vertically rotated under the driving of the speed reducer, and drives the stirring paddle 10 to stir the ore slurry and the PAM liquid;

[0032] The rotation of the stirring paddle 10 generates strong shearing force and impact force, so that the ore slurry and the PAM liquid are fully mixed in the dynamic mixing pipe 2;

[0033] During the stirring process, the contact area between the ore slurry and the PAM liquid is increased, and the mixing uniformity is improved.

[0034] II. transition mixing stage

[0035] The mixed fluid enters the horizontal section of the mixing transition pipe 3 from the dynamic mixing pipe 2;

[0036] In the horizontal section, the fluid continues to flow and maintain a certain mixing state;

[0037] The inclined section promotes mixing:

[0038] The fluid enters the inclined section from the horizontal section, and the design of the inclined section causes turbulence in the fluid during flow;

[0039] Turbulence helps to further break up particles and bubbles in the fluid, promoting mixing of the ore slurry and PAM solution;

[0040] At the same time, the design of the inclined section also helps the fluid to flow smoothly under the action of gravity, avoiding sudden decline in mixing effect.

[0041] Three, static mixing stage

[0042] The fluid enters the static mixing pipe 4 from the mixing transition pipe 3, and the SK mixing module is arranged in the static mixing pipe 4;

[0043] The SK mixing module includes a plurality of twisted spiral plates 11, and a spiral mixing gap 12 is left between the spiral plates 11 and the static mixing pipe 4;

[0044] When the fluid passes through the spiral plates 11, it will be guided and extruded by the spiral plates 11, generating rotation and turbulence;

[0045] The twisted design of the spiral plates 11 and the existence of the spiral mixing gap 12 cause the fluid to produce a complex flow pattern in the static mixing pipe 4.

[0046] This complex flow pattern helps to further improve the uniformity of the mixing of the ore slurry and the PAM solution,

[0047] At the same time, the design of the static mixing pipe 4 also avoids excessive pressure loss and energy consumption of the fluid during mixing.

[0048] Four, final mixing effect

[0049] After the continuous mixing effect of the dynamic mixing pipe 2, the mixing transition pipe 3 and the static mixing pipe 4, the ore slurry and the PAM solution reach a fully mixed state;

[0050] The mixed fluid has high uniformity and stability, providing good conditions for subsequent belt filter treatment;

[0051] Due to high mixing efficiency and good mixing uniformity, the device can significantly reduce the use of PAM solution, reduce production cost and environmental burden.

[0052] In summary, the SK type pipeline mixing improved device realizes the full mixing of the ore pulp and the PAM liquid medicine, improves the flocculation effect, and reduces the use amount of the PAM liquid medicine. Meanwhile, the device also has the advantages of simple structure, easy maintenance, strong adaptability and the like, and is suitable for the mixing treatment of various tailing ore pulps.

Claims

1. An improved SK type pipe mixing device, characterized by: The dynamic mixing pipe, the mixing transition pipe and the static mixing pipe are sequentially arranged, one end of the dynamic mixing pipe is communicated with the external tailing slurry overflow pipe, the other end of the dynamic mixing pipe is communicated with one end of the mixing transition pipe, the other end of the mixing transition pipe is communicated with one end of the static mixing pipe, and the other end of the static mixing pipe is communicated with the feeding pipe of the external belt filter. The dynamic mixing pipe is provided with a dynamic stirring mechanism, the dynamic stirring mechanism comprises a stirring shaft vertically rotatably arranged on the dynamic mixing pipe, one end of the stirring shaft is arranged in the dynamic mixing pipe and is provided with a stirring paddle, the other end of the stirring shaft is arranged outside the dynamic mixing pipe, a driving device for driving the stirring shaft to drive the stirring paddle to dynamically stir and mix the slurry is arranged on the outer wall of the dynamic mixing pipe, and a dosing port for adding PAM liquid medicine is arranged on the dynamic mixing pipe close to the side of the external tailing slurry overflow pipe. The SK mixing module is arranged in the static mixing pipe, the SK mixing module comprises a plurality of twisted spiral plates, and a spiral mixing gap for changing the flow state of the slurry is left between the spiral plates and the static mixing pipe.

2. The SK pipe mixing improvement device of claim 1, wherein: The dynamic mixing pipe, the mixing transition pipe and the static mixing pipe are provided with butt flanges for mutual connection at both ends.

3. The SK pipe mixing improvement device of claim 1, wherein: A rotary dynamic seal is arranged at the joint of the stirring shaft and the dynamic mixing pipe, the driving device is a speed reducer, and the motor shaft of the speed reducer is in transmission connection with the stirring shaft through a shaft coupling.

4. The SK pipe mixing improvement device of claim 1, wherein: The mixing transition pipe comprises a horizontal section and an inclined section which are sequentially arranged, the horizontal section is communicated with the dynamic mixing pipe, one end of the inclined section with a higher height is connected with the horizontal section, and the other end of the inclined section with a lower height is communicated with the static mixing pipe.

5. The SK pipe mixing improvement device of claim 4, wherein: The inclination angle of the inclined section is 10°-25°.

6. The SK pipe mixing improvement device of claim 1, wherein: The spiral plate is a 180° or 270° spiral plate.

7. The SK pipe mixing improvement device of claim 1, wherein: The dynamic mixing pipe is horizontally arranged, and the static mixing pipe is obliquely arranged.

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