CN210933918U

CN210933918U - Concentrate recovery device

Info

Publication number: CN210933918U
Application number: CN201921784894.2U
Authority: CN
Inventors: 邵守言; 赵胜利; 赵顺利; 刘航; 李梅
Original assignee: HUAIBEI XIELI HEAVY MACHINE CO Ltd
Current assignee: HUAIBEI XIELI HEAVY MACHINE CO Ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-07-07
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses a concentrate recovery unit, including concentrated pond, pan feeding mechanism fix in concentrated pond, concentrated pond upper portion is equipped with the overflow mouth, and the bottom is equipped with the discharge gate, pan feeding mechanism includes that the pan feeding manages admittedly, cup joints the stationary flow section of thick bamboo outside the solid pipe of pan feeding, and the solid intraductal top or the open sides cavity that is of pan feeding, this opening part inserts the department for the pan feeding pipe, and the cavity bottom is equipped with a plurality of discharge openings that run through with the outside, and the stationary flow section of thick bamboo sets up with the solid tub interval of pan feeding, and the turbid layer of ore pulp in the concentrated pond is arranged in to the discharge opening. The utility model has the advantages that: install at muddy layer through the discharge opening, the pan feeding point can descend, avoids becoming muddy with the clear water layer, and through the choked flow effect of a stationary flow section of thick bamboo, the discharge opening ore pulp meets a stationary flow section of thick bamboo, and speed descends, and the flow direction has also changed, has reduced the impact force of pan feeding, has improved the pan feeding effect, has improved the settling velocity of whole settlement process, improves the rate of recovery.

Description

Concentrate recovery device

Technical Field

The utility model relates to a recovery unit especially relates to a concentrate recovery unit.

Background

The metal still contains some metal particles in the ore washing water produced in the ore washing procedure, therefore, the metal is mostly recovered to avoid loss, the ore washing water obtains filter cakes after solid-liquid separation, the filter cakes are taken out, dried and crushed, then are respectively weighed and distributed with water to prepare ore pulp with certain concentration, and then are settled and recovered, and for recoverable objects, in the prior art, physical settlement or chemical settlement is usually adopted, chemical reagent is usually used for chemical settlement, so that the method is not environment-friendly, and therefore, the method is more prone to physical settlement; however, in the existing physical sedimentation mode, a thickener which is usually adopted is used for sedimentation, the thickener is a concentration cavity with a certain volume, the top of the thickener is provided with a truss, the truss is provided with a driving device, the driving device can drive a driving rod to rotate, the bottom of the driving rod is provided with a scraping mechanism, ore pulp is injected into the cavity for sedimentation, after sedimentation is carried out for a period of time, the thickener is divided into a clear water layer, a turbid layer and a sedimentation layer from top to bottom, in the sedimentation process, the clear water layer, the turbid layer and the sedimentation layer can change in height, the upper part of a concentration tank is provided with an overflow port and a feeding part, in general, the clear water layer is clarified liquid and is mostly small particles and can overflow from the overflow port, the turbid layer is a sedimentation layer which is being settled and is mostly medium particles, and the;

as in application No.: 201510608360.4A method for recovering tantalum-niobium concentrate from tantalum-niobium waste ore, which comprises the steps of taking tantalum-niobium waste ore as raw material, crushing, grinding, screening, removing strong magnetic mechanical iron substance by a spiral classifier and permanent magnet, then enriching weak magnetic tantalum-niobium-iron mineral by a high gradient magnetic separator, and obtaining high-grade tantalum-niobium-containing rough ore by spiral chute separation, and is characterized by further comprising the following steps: 1) and (2) carrying out table separation, namely carrying out remote bed separation on the high-grade tantalum-niobium coarse ore, adding an adjusting dispersant, and carrying out filter pressing to obtain ore pulp, 2) carrying out activation separation, feeding the ore pulp into a distribution groove, adding an activating agent to separate out part of tantalum-niobium concentrate and the ore pulp, 3) carrying out high-gradient magnetic separation, and carrying out fine separation on the ore pulp by using a high-gradient magnetic separator and adding a flocculating agent to obtain the tantalum-niobium concentrate. And the flocculant is used for sedimentation, so that the method is not environment-friendly.

And, in the physical settlement process, the pan feeding structure often is reasonable inadequately, under the ordinary condition, carry out the pan feeding by the direct overlap joint of pan feeding pipe in the middle of the upper portion of concentrated pond or edge, the pan feeding in-process, the ore pulp velocity of flow in the pan feeding pipe is great, directly pours into the clear water layer, can lead to this clear water that has already clarified to become muddy once more, leads to muddy state for a longer time, and the settlement process is interrupted, prolongs the time of subsiding, is mingled with more granule that can not subside in the clear water layer and can follow the overflow mouth and flow out, leads to the loss.

Resulting in the particles collected during the actual recovery process often being inaccessible to 200 mesh.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve lies in: how to solve the problem that the recovery effect is not good that the pan feeding structure is unreasonable to cause.

The utility model discloses a following technical means realizes solving above-mentioned technical problem:

the utility model provides a concentrate recovery unit, includes that concentrated pond, pan feeding mechanism fix in concentrated pond, and concentrated pond upper portion is equipped with the overflow mouth, and the bottom is equipped with the discharge gate, pan feeding mechanism includes that the pan feeding is managed admittedly, cup joints at the solid outside stationary flow section of thick bamboo of pan feeding, is top or side open-ended cavity in the solid intraductal of pan feeding, and this opening part inserts the department for the pan feeding pipe, and the cavity bottom is equipped with a plurality of discharge openings that run through with the outside, and stationary flow section of thick bamboo sets up with the solid tub interval of pan feeding, and the turbid layer of ore pulp in the concentrated pond is arranged.

The utility model discloses a connect the pan feeding pipe into pan feeding solid pipe top, back ore pulp flows into the cavity, flow out by the discharge opening, the discharge opening is a plurality of, can realize to the pan feeding of diffusion formula all around, reduce the impact force of a pan feeding, moreover, through the choked flow effect of stationary flow section of thick bamboo, the discharge opening ore pulp meets stationary flow section of thick bamboo, the speed descends, the flow direction has also changed, the impact force of pan feeding has further been reduced, and when the ore pulp flows out, when the large granule in the muddy layer falls, can strike the falling of the small particle in the new ore pulp, make the small particle can be retrieved; and this stationary flow pan feeding device installs in the inside of concentrated machine, and under the ordinary condition, the discharge opening is installed in muddy layer, and the pan feeding point can descend, has avoided the ore pulp to get into clear water layer, becomes muddy with clear water layer, can not be in disorder once more with the ore pulp that has already settled again, consequently, has improved the pan feeding effect, has improved the settlement speed of whole settlement process, improves the rate of recovery.

Preferably, the feeding solid pipe is of a tubular structure made of cement, the bottom of the feeding solid pipe is fixed at the bottom inside the concentration tank, and the part below a discharge hole of the feeding solid pipe is of a solid structure.

The cement column has stable structure and is environment-friendly.

Preferably, still including scraping the material mechanism, scrape the material mechanism and can wind the solid tub pivoted of pan feeding and install on the solid tub of pan feeding, scrape the material mechanism and include the support, a plurality of flitchs of scraping are scraped, scrape the flitch and install in the support below.

The scraping structure can concentrate ore pulp in the settling layer at the discharge port, so that the ore pulp can be discharged conveniently.

Preferably, if the top end of the feeding solid tube is opened, the opening is higher than the top end of the thickener, and the feeding tube is connected with the top end of the feeding solid tube; if the side surface of the feeding fixed pipe is opened, the feeding pipe penetrates through the machine wall of the thickener from the outside of the thickener and then is connected with the opening.

The top end feeding or the side face feeding can be selected according to the condition, the use is flexible, and the feeding pipe can be fixed on the truss during feeding.

Preferably, the bottom end of the flow stabilizing cylinder is lower than the discharge hole.

Preferably, the discharge hole is transversely arranged or obliquely arranged downwards.

Preferably, the discharge holes are uniformly arranged.

Preferably, the vertical height between the discharge hole and the overflow port of the concentration tank and the vertical height between the lowest position in the concentration tank and the overflow port are 1/4-1/2.

Preferably, the device also comprises a flow guide mechanism, wherein the flow guide mechanism is fixed on the feeding fixed pipe and is positioned below the flow stabilizing cylinder.

Preferably, the cross section of the flow guide mechanism is a trapezoidal round table structure and/or a trumpet-shaped structure, the inside of the flow guide mechanism is hollow or solid, and one end close to the flow stabilizing cylinder is the end with a small diameter.

The flow direction of ore pulp is changed through the stationary flow cylinder, the flow direction is mostly downward direction, still can produce certain impact, and the flow rate and the direction of the ore pulp that the guiding mechanism can impact on the stationary flow cylinder are changed again for the flow direction of ore pulp is changed into the direction of roughly the horizontally, gets into the turbid layer with more gentle mode.

The action face for realizing the flow guiding is the surface of the slurry guiding device, so that the slurry guiding device is not limited to the internal structure of the slurry guiding device, and the tangential direction at the edge of the arc can be horizontal, so that the slurry enters horizontally, and the impact is reduced.

The utility model has the advantages that:

(1) the utility model discloses a connect the pan feeding pipe into pan feeding solid pipe top, back ore pulp flows into the cavity, flow out by the discharge opening, the discharge opening is a plurality of, can realize to the pan feeding of diffusion formula all around, reduce the impact force of a pan feeding, moreover, through the choked flow effect of stationary flow section of thick bamboo, the discharge opening ore pulp meets stationary flow section of thick bamboo, the speed descends, the flow direction has also changed, the impact force of pan feeding has further been reduced, and when the ore pulp flows out, when the large granule in the muddy layer falls, can strike the falling of the small particle in the new ore pulp, make the small particle can be retrieved; the steady flow feeding device is arranged in the thickener, and under the normal condition, the discharge hole is arranged in the turbid layer, so that the feeding point can be lowered, the phenomenon that ore pulp enters a clear water layer to turn the clear water layer into turbid is avoided, and the settled ore pulp is not disturbed again, therefore, the feeding effect is improved, the settling speed in the whole settling process is improved, and the recovery rate is improved;

(2) the cement column has stable structure and is environment-friendly;

(3) the scraping structure can concentrate ore pulp in the settling layer at the discharge port, so that the ore pulp is convenient to discharge;

(4) top feeding or side feeding can be selected according to the situation, the use is flexible, and the feeding pipe can be fixed on the truss during feeding;

(5) the bottom end of the steady flow cylinder is lower than the discharge hole, so that the ore pulp discharged from the discharge hole can be sprayed onto the steady flow cylinder, and the deceleration effect is obtained;

(6) the discharge holes are uniformly arranged, so that uniform discharge is ensured, the sedimentation speeds at all positions are approximately the same, and the sedimentation speed is ensured under the condition of ensuring the sedimentation effect;

(7) the flow direction of ore pulp is changed through the stationary flow section of thick bamboo, the flow direction is mostly downward direction, still can produce certain impact, the velocity of flow and the direction that water conservancy diversion mechanism can will strike the ore pulp on the stationary flow section of thick bamboo are changed once more, make the flow direction of ore pulp change into roughly horizontally direction, get into turbid layer with more gentle mode, the effect face that realizes the water conservancy diversion is its surface, therefore, be not limited to its inner structure, the tangential direction of curved extreme edge can be the horizontally, make the horizontally entering of ore pulp, reduce and strike.

(8) Particles of 400 mesh or less can be recovered.

Drawings

FIG. 1 is a schematic structural diagram of a concentrate recovery device according to an embodiment of the present invention

FIG. 2 is a schematic structural diagram of a feeding mechanism in the first embodiment;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic structural view of the feeding mechanism in the second embodiment;

FIG. 5 is a schematic view showing the construction of a recycling apparatus using the feeding mechanism in the second embodiment;

FIG. 6 is a schematic structural view of a feeding mechanism in the third embodiment;

FIG. 7 is a schematic structural diagram of a feeding mechanism in the fourth embodiment:

FIG. 8 is a schematic structural view of a feeding mechanism in the fifth embodiment;

FIG. 9 is a schematic structural view of a feeding mechanism in the sixth embodiment;

FIG. 10 is a schematic structural diagram of a feeding mechanism in the seventh embodiment.

Reference numbers in the figures: the device comprises a feeding fixed pipe 1, a cavity 11, a discharge hole 12, a flow stabilizing cylinder 2, a flow guide mechanism 3, a feeding pipe 4, a concentration tank 5, a truss 51, a scraping mechanism 6, a support 61 and a scraping plate 62.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1, a concentrate recovery device, including concentrated pond 5, pan feeding mechanism fix in concentrated pond 5, concentrated pond 5 upper portion is equipped with the overflow mouth, and the bottom is equipped with the discharge gate, pan feeding mechanism includes pan feeding solid tube 1, cup joints steady flow cylinder 2, guiding mechanism 3 outside the solid tube 1 of pan feeding, is open-ended cavity 11 in the solid tube 1 of pan feeding, and this opening part is pan feeding pipe 4 access department, and the cavity bottom is equipped with a plurality of discharge openings 12 that run through with the outside, and steady flow cylinder 2 sets up with the solid tube 1 interval of pan feeding, and guiding mechanism 3 fixes on the solid tube 1 of pan feeding to be in steady flow cylinder 2 below, the turbid layer of ore pulp in the concentrated pond is arranged in to the discharge opening.

In this embodiment, the solid pipe 1 of pan feeding is the tubular structure of cement preparation, and the bottom of the solid pipe of pan feeding is fixed in the inside bottom of concentrated pond 5, and the top is higher than the overflow mouth, and the part below the discharge opening 12 of the solid pipe 1 of pan feeding is solid structure for the pan feeding is all gone on by pan feeding hole 12. The cement column has stable structure and is environment-friendly.

Still include scraping mechanism 6 in this embodiment, scraping mechanism 6 can wind the solid tub pivoted installation of pan feeding on the solid tub of pan feeding 1, and is specific, scraping mechanism 6 includes support 61, a plurality of scraping boards 62, and what scraping boards 62 can reciprocate hangs in the support 61 below. Specifically, one end of the bracket 61 is connected with the feeding fixed pipe 1 through a bearing, and the other end of the bracket can realize the circumferential rotation of the bracket around a central cement column through four-bar linkage driving rotation, crank slider driving and other modes, or other mechanisms capable of realizing the circumferential motion of the bracket; the up-and-down movement of the scraping plate can be realized by the modes of gear and rack meshing, screw rod nuts and the like, or other mechanisms or modes which can realize the up-and-down movement in the prior art can be applied to the scraping plate. Scrape material structure 6 and can concentrate the ore pulp in the settlement layer in the discharge gate, the ejection of compact of being convenient for.

The feeding fixed pipe 1 is of a cylindrical structure, the inner cavity is a round hole, the diameter of the round hole is equal to or slightly larger than that of the feeding pipe 4, and cement casting can be adopted in the practical use process, so that the cement performance is stable;

the top end of the feeding solid tube 1 is opened, the opening is higher than the top end of the thickener, and the feeding tube 4 is connected with the top end of the feeding solid tube 1.

As shown in fig. 2 and 3, the flow stabilizing cylinder 2 is a cylindrical structure, the inner diameter of the flow stabilizing cylinder is larger than the outer diameter of the feeding fixing pipe 1, and the bottom end of the flow stabilizing cylinder 2 is lower than the discharge hole. The top end of the flow stabilizing cylinder 2 can be of a closed structure or an open structure and can be hung on a truss in a fixed mode.

The discharge hole 12 is arranged transversely or obliquely downwards. The ore pulp discharged from the discharge hole 12 can be sprayed on the flow stabilizing cylinder 2, and the effects of speed reduction and flow direction change are achieved.

The discharge holes 12 are uniformly arranged. The uniform discharge is ensured, and the sedimentation velocity at each position is approximately the same.

It should be noted that the discharge hole 12 is located in the turbid layer, and a person skilled in the art can design reasonable adaptability according to the volume of the concentration tank and the concentration of the ore pulp because each layer changes in the sedimentation process;

as in the following experiment:

the raw materials are ore pulp (filter cake) of a fine processing plant: the pulping concentration is 8-10%; the target concentration is more than or equal to 15 percent after sedimentation; no medicament is added in the sedimentation process;

①, drying and crushing the filter cake, and then weighing and distributing water to prepare ore pulp with the concentration of 8% and 10% for later use;

② putting the proportioned ore pulp into a 500ml glass measuring cylinder;

③ the position is lowered every 15 minutes by a stopwatch until the target concentration is 15% or more.

Finally, the following table I is obtained:

it can be seen that the tap hole height should be approximately above 1/3, the preferred overall height of 1/2. Can achieve better feeding effect.

In this embodiment, the number of the discharge holes 12 is 6. The discharge hole 12 may be circular or square.

The utility model discloses a through with pan feeding pipe 4 connect into pan feeding solid pipe 1 top, back ore pulp flows into the cavity, flow out by discharge opening 12, discharge opening 12 is a plurality of, can realize to the pan feeding of diffusion formula all around, reduce the impact force of a pan feeding, moreover, through the choked flow effect of stationary flow section of thick bamboo 2, the speed drops after the ore pulp that discharge opening 12 flows meets stationary flow section of thick bamboo 2, the flow direction has also changed, the impact force of pan feeding has further been reduced, and when the ore pulp flows out, when the large granule in the turbid layer falls, can strike the falling of the small particle in the new ore pulp, make the small particle can be retrieved; and this stationary flow pan feeding device installs in the inside of concentrated machine, and under the ordinary condition, discharge opening 12 is installed in muddy layer, and the pan feeding point can descend, has avoided the ore pulp to get into the clear water layer, becomes muddy with the clear water layer, can not be in disorder once more with the ore pulp that has already settled again, consequently, has improved the pan feeding effect, has improved the settlement speed of whole settlement process, has reduced the loss that leads to after the well granule gets into the clear water layer, improves the rate of recovery.

Example two:

as shown in fig. 4 and 5, the difference between the second embodiment and the first embodiment is: and also comprises a flow guide mechanism 3.

In this embodiment, the flow guiding mechanism 3 is a circular truncated cone structure, the inside of the flow guiding mechanism is hollow or solid, the flow guiding mechanism is not limited to an internal structure, the acting surface of the flow guiding mechanism is an inclined surface on the surface, and one end close to the flow stabilizing cylinder 2 is a small-diameter end.

The flow direction of ore pulp is changed through the flow stabilizing cylinder 2, the flow direction is mostly downward, certain impact can still be generated, the flow rate and the direction of the ore pulp impacting on the flow stabilizing cylinder 2 can be changed again by the flow guide mechanism 3, so that the flow direction of the ore pulp is changed into the approximately horizontal direction, and the ore pulp enters the turbid layer in a more gentle mode.

Example three:

as shown in fig. 6, the difference between the third embodiment and the second embodiment is: the feeding ports are arranged at different positions.

The side surface of the feeding fixed pipe 1 is provided with an opening, and the feeding pipe 4 penetrates through the machine wall of the thickener from the outside of the thickener and then is connected with the opening.

When feeding, the feeding pipe 4 can be fixed on the truss.

Example four:

as shown in fig. 7, the difference between the fourth embodiment and the second embodiment is that: the shapes of the flow guide mechanisms are different.

The flow guide mechanism 3 is of an arc-shaped horn-shaped structure, the inside of the flow guide mechanism is hollow or solid, and one end close to the flow stabilizing cylinder is the end with a small diameter.

Example five:

as shown in fig. 8, the difference between the fifth embodiment and the fourth embodiment is that: the feeding ports are arranged at different positions.

At this time, the diversion mechanism 3 is of a horn-shaped structure with an arc-shaped outer surface.

Example six:

as shown in fig. 9, the difference between the sixth embodiment and the second embodiment is: the shapes of the flow guide mechanisms are different.

The cross section of the flow guide mechanism 3 is of a variable cross section structure, the upper part of the flow guide mechanism is of a round table structure, the outer surface of the lower part of the flow guide mechanism is of an arc horn-shaped structure, the inner part of the flow guide mechanism is hollow or solid, and one end, close to the flow stabilizing cylinder, of the flow guide mechanism is the end with a small diameter.

Example seven:

as shown in fig. 10, the seventh embodiment is different from the first embodiment in that: the feeding solid tube 1 is arranged in different modes, and the scraping mechanism 6 is arranged in different modes.

The top in concentrated pond 5 is equipped with truss 51, drive arrangement installs on truss 51, the top of the solid pipe 1 of pan feeding can rotate under drive arrangement's drive, scrape the bottom of the solid pipe 1 of material mechanism 6 fixed mounting in pan feeding, the solid pipe 1 of pan feeding is equivalent to the actuating lever of scraping material mechanism 6 this moment, the upper portion of the solid pipe 1 of pan feeding is hollow, the lower part is solid, a stationary flow section of thick bamboo 2 cup joints at the actuating lever outside, can connect or direct fixed connection through the bearing between, when the bearing is connected, when the actuating lever rotates, a stationary flow section of thick bamboo 2 does not rotate, during fixed connection, the two rotates jointly.

The scraping mechanism 6 comprises a support 61 and a plurality of scraping plates 62, the support 61 is fixed at the middle lower part of the feeding solid pipe 1 and can be driven by a driving device to rotate, the scraping plates 62 are installed on the support 61, the bottom in the concentration tank 5 is of an inclined structure, an included angle between each scraping plate 62 and an inclined plane bus is 8-10 degrees, ore pulp can be concentrated towards the center when the scraping mechanism is rotated, and the collection is facilitated.

Of course, the air guide mechanism 3 is further included, and the air guide mechanism 3 may be any one of the second, fourth and sixth embodiments.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a concentrate recovery unit, its characterized in that, fixes in concentrated pond including concentrated pond, pan feeding mechanism, and concentrated pond upper portion is equipped with the overflow mouth, and the bottom is equipped with the discharge gate, pan feeding mechanism includes the solid pipe of pan feeding, cup joints the stationary flow section of thick bamboo outside the solid pipe of pan feeding, and the solid intraductal top or the open-sided cavity that is of pan feeding, this opening part are pan feeding pipe access department, and the cavity bottom is equipped with a plurality of discharge openings that run through with the outside, and the stationary flow section of thick bamboo sets up with the solid tub interval of pan feeding, and the turbid layer of ore pulp in the concentrated pond is arranged in to.

2. The concentrate recovery device according to claim 1, wherein the feeding solid pipe is of a tubular structure made of cement, the bottom of the feeding solid pipe is fixed at the bottom of the interior of the concentration tank, and the part below the discharge hole of the feeding solid pipe is of a solid structure.

3. The concentrate recovery device according to claim 2, further comprising a scraping mechanism, wherein the scraping mechanism is rotatably mounted on the feeding fixing pipe around the feeding fixing pipe, the scraping mechanism comprises a bracket, and a plurality of scraping plates are mounted below the bracket.

4. The concentrate recovery device according to claim 1, wherein if the top end of the feeding solid pipe is open, the opening is higher than the top end of the thickener, and the feeding pipe is connected with the top end of the feeding solid pipe; if the side surface of the feeding fixed pipe is opened, the feeding pipe penetrates through the machine wall of the thickener from the outside of the thickener and then is connected with the opening.

5. The concentrate recovery device according to claim 1, wherein the bottom end of the flow stabilizing cylinder is lower than the discharge hole.

6. The concentrate recovery device according to claim 1, characterized in that the discharge opening is arranged transversely or obliquely downwards.

7. The concentrate recovery device according to claim 1, wherein the discharge holes are uniformly arranged.

8. The concentrate recovery unit according to claim 1, wherein the vertical height of the discharge hole from the overflow outlet to the thickening tank and the vertical height from the overflow outlet to the lowest position in the thickening tank are 1/4-1/2.

9. The concentrate recovery device according to claim 1, further comprising a flow guide mechanism fixed on the feeding fixed pipe and located below the flow stabilizing cylinder.

10. The concentrate recovery device according to claim 9, wherein the cross section of the flow guiding mechanism is a trapezoidal truncated cone structure and/or a trumpet structure, the interior of the flow guiding mechanism is hollow or solid, and the end close to the flow stabilizing cylinder is a small-diameter end.