CN220371260U - Tailing cleaning system - Google Patents

Abstract

The utility model relates to a tailing cleaning system, which belongs to the technical field of tailing treatment and comprises a sand washing device and a elutriation device, wherein the sand washing device comprises a tailing feeding pipe, a sand washing tank and a high-pressure water pipe, and the sand washing tank comprises a tank body and a sand washing inner cylinder arranged in the tank body; the lower part of the tank body is conical, and the bottom of the cone is provided with a sand discharge pipe; a mud discharging pipe is arranged on the side surface of the upper part of the tank body; the sand washing inner cylinder is fixed in the tank body; the tailing feeding pipe is inserted into the sand washing inner cylinder from the upper part; the high-pressure water pipe is inserted into the sand washing inner cylinder from the bottom, tailings are washed by high-pressure water, so that mud and sand are separated, and the obtained fine sand enters a elutriation device for further elutriation; the utility model can realize the thorough separation of organic matters, fine viscous mud matters and fine sand in tailings, and the separated fine sand does not need to be dried and is only stored naturally, the maximum water content of the fine sand does not exceed 7 percent, when the fine sand is used as a concrete raw material, the consumption of cement can be reduced, and the alkali aggregate reaction value is lower than 0.02 percent, and the fine sand can be used as the concrete raw material.

Description

Tailing cleaning system

Technical Field

The utility model belongs to the technical field of tailing treatment, and particularly relates to a tailing cleaning system.

Background

The tailings are waste residues discharged by mine enterprises after ore dressing is finished, the waste residues are discharged in a slurry form, the yield is extremely high, the existing tailings treatment method mainly comprises landfill, ground stockpiling, dam construction stockpiling, treatment and the like, the treated tailings are used as building materials, the landfill and the stockpiling are still the most main treatment methods of the existing tailings, and the utilization rate of the tailings is extremely low.

Tailings not only contain residual flotation agents, but also are mixed with large amounts of organics, fine viscous sludge, etc. These fine sticky substances are adhered to fine sand in tailings, so that the fine sand and the sticky substances are difficult to separate, and the conventional tailings cleaning device is difficult to effectively separate the fine sand from the sticky substances. In the existing tailing cleaning technology, because the fine sand is difficult to separate from the fine viscous substances, a drying device is needed to be additionally arranged after cleaning and separation, or the fine sand is calcined before or after cleaning, or an additive is added into cleaning water. If the cleaning is not thorough, the fine sand can be agglomerated, even if the agglomeration problem is solved, in the prior art, the fine sand obtained by cleaning the tailings can be used as common building materials, but the alkali aggregate reaction value of the concrete is too high when the fine sand is used as a concrete raw material. The alkali aggregate reaction value refers to a phenomenon that an alkali substance in a concrete raw material chemically reacts with an active ingredient to generate an expansion substance (or a water-absorbing expansion substance) to cause internal self-expansion stress of concrete to crack. Since alkali aggregate reaction generally occurs gradually after several years after concrete is formed, the durability of the concrete is reduced, and the concrete is lost in use when serious, and since the reaction occurs in the whole concrete, the damage caused by the reaction is difficult to prevent, repair and rescue, and is called as cancer of the concrete. Therefore, the reaction value of the alkali aggregate with the coagulation must satisfy the 14d expansion ratio of not more than 0.10%. The 14d expansion rate of alkali aggregate reaction of the fine sand obtained after the tailing is cleaned exceeds 2.0%, and the fine sand cannot be safely used as a concrete raw material, so that reports that the tailing treated fine sand is used as the concrete raw material and the basic degree reaction value still reaches the standard are not yet seen at present, and many reports that the tailings treated fine sand is used for concrete are in a multi-flow form and cannot be practically used at all, and even if the tailings treated fine sand is used, the use safety cannot be guaranteed due to the fact that the basic degree reaction value exceeds the standard.

Disclosure of Invention

In order to overcome the problems in the background art, the utility model provides the tailing cleaning system, which can thoroughly separate organic matters, fine viscous impurities and fine sand in tailings, the separated fine sand does not need to be additionally dried, the maximum water content of the separated fine sand is not more than 7 percent, when the separated fine sand is used as a concrete raw material, the consumption of cement can be reduced, and the alkali aggregate reaction value is lower than 0.1 percent, and the separated fine sand can be used as the concrete raw material.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the tailing cleaning system comprises a sand washing device; the sand washing device comprises a tailing feeding pipe, a sand washing tank and a high-pressure water pipe, wherein the sand washing tank comprises a tank body and a sand washing inner cylinder arranged in the tank body; the lower part of the tank body is conical, and the bottom of the cone is provided with a sand discharge pipe; a mud discharging pipe is arranged on the side surface of the upper part of the tank body; the sand washing inner cylinder is fixed in the tank body through a bracket; the tailing feeding pipe is inserted into the sand washing inner cylinder from the upper part; the high-pressure water pipe penetrates through the tank body, the sand washing inner cylinder is inserted from the bottom, and a spray head is arranged at an outlet of the high-pressure water pipe.

Preferably, the sand washing inner cylinder 4 has any cavity structure with openings at the upper and lower parts.

Preferably, the sand washing inner cylinder is provided with more than one; the tailing feeding pipe comprises a feeding main pipe and a feeding branch pipe; one end of the feeding branch pipe is connected with the feeding main pipe, and the other end of the feeding branch pipe is inserted into the sand washing inner cylinder from an upper opening; each sand washing inner cylinder is correspondingly provided with a feeding branch pipe.

Preferably, a scraping opening is formed in the top of the tank body, a floating foam scraper is arranged at the scraping opening, and a floating foam collecting tank is arranged beside the scraping opening; the foam scraping plate comprises a rotating shaft A and a foam scraping frame fixed around the rotating shaft A; the rotating shaft A is driven by a scraper motor.

Preferably, the sand washing inner cylinder is provided with more than one; the high-pressure water pipe comprises a water inlet main pipe and a water inlet branch pipe; the water inlet main pipe penetrates through the side wall of the tank body and is inserted into the tank body, and the water inlet branch pipes are communicated with the sand washing inner cylinder from the water inlet main pipe; each sand washing inner cylinder corresponds to one water inlet branch pipe, the water inlet branch pipe is inserted into the sand washing inner cylinder from the opening below, and a spray head is arranged at the outlet of the water inlet branch pipe.

Preferably, the sand washing inner cylinder is provided with more than one; each sand washing inner cylinder is provided with an independent high-pressure water pipe, and the high-pressure water pipe is inserted into the sand washing inner cylinder from the lower opening.

Preferably, the tailing washing system further comprises a washing roller; the elutriation roller comprises a framework, a cylindrical filter screen fixed by the framework and a roller motor; the roller motor is in transmission connection with the framework; the sand discharge pipe is connected to the feeding end of the elutriation roller; the discharge end of the roller is provided with a sand discharge channel.

Preferably, the washing drum further comprises a rotating shaft B; the rotating shaft B is in transmission connection with the roller motor; the framework comprises a circular framework and an axial framework; the annular frameworks are concentrically and alternately fixed through the axial frameworks; the rotating shaft B passes through the center of the framework and is fixedly connected with the framework; the sand discharge channel is a sand discharge pipe or a sand discharge plate.

Preferably, the washing drum is provided with a washing pipe on both sides, and the washing pipe is provided with a nozzle facing the washing drum.

Preferably, the cylindrical filter screen and the framework are made of stainless steel.

Preferably, a baffle plate for prolonging the travelling path of the materials in the cylindrical material is arranged in the cylindrical filter screen.

Preferably, the baffle is spirally arranged along the inner wall of the cylindrical filter screen; the baffle sets up two, and two parallel arrangement.

The utility model has the beneficial effects that:

according to the utility model, the sand washing inner cylinder is arranged in the sand washing tank, high-pressure water is introduced into the lower part of the sand washing inner cylinder, tailings are added above the sand washing inner cylinder, the tailings fully contact and wash the high-pressure water in the sand washing inner cylinder, the separation of fine sand and fine mud in the tailings is promoted, and the separated fine mud floats above and is discharged from the mud discharge port; the separated fine sand sinks due to the large specific gravity and is discharged from the sand discharge pipe. According to the sand washing tank, mud and sand are discharged from the sand washing tank respectively while mud and sand are washed and separated in tailings, and due to the structure of the inner cylinder sleeve outer cylinder between the tank body and the sand washing inner cylinder, the washed and separated mud and sand still have sufficient sedimentation and separation space outside the sand washing inner cylinder, and the separation effect of the mud and sand is further improved.

According to the elutriation roller, the whole elutriation roller is designed into a cylindrical filter screen structure supported by a framework, fine sand which is washed by a sand washing tank and is subjected to primary separation is further washed and separated, fine mud matters mixed into the sand washing are leaked out of the elutriation roller through the filter screen, the fine sand is remained in the cylindrical filter screen, and finally the fine sand which is thoroughly separated from the fine mud matters is obtained; the washing pipes arranged at two sides of the washing roller are used for washing the cylindrical filter screen, preventing the cylindrical filter screen from being blocked, simultaneously providing washing water for materials in the cylindrical filter screen, and playing a role in washing fine sand in the barrel.

The utility model completes scouring and preliminary separation of fine sand and mud in tailings in the sand washing device through the combination of the fine sand device and the elutriation roller; further elutriation of the preliminarily separated fine sand in the elutriation roller to obtain fine sand with extremely high purity, wherein the obtained fine sand can be used as a concrete raw material, and the alkali aggregate reaction value of the concrete can meet the safety requirement of the concrete, so that the aim of using the treated tailings as the concrete raw material is truly realized.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the sand washing tank of the present utility model;

FIG. 3 is a top plan view of the tank body of the sand washing tank of the present utility model;

FIG. 4 is a schematic view of the froth scraping plate structure of the present utility model;

FIG. 5 is a schematic view of the elutriation drum construction of the present utility model;

FIG. 6 is a side view of the panning cylinder of the present utility model;

FIG. 7 is a schematic diagram of the skeleton structure of the elutriation drum of the present utility model;

in the figure, a 1-tailing feeding pipe, a 11-feeding main pipe, a 12-feeding branch pipe, a 2-high-pressure water pipe, a 3-tank body, a 4-sand washing inner cylinder, a 5-sand discharging pipe, a 6-mud discharging pipe, a 7-scraping port, an 8-foam scraping plate, an 81-rotating shaft A, an 82-foam scraping frame, an 83-scraping plate motor, a 9-foam collecting tank, a 111-annular framework, a 112-axial framework, a 13-roller motor, a 14-sand discharging channel, a 15-rotating shaft B, a 16-flushing pipe, a 17-baffle plate, an 18-mud receiving tank, a 19-mud discharging pipe, a 20-roller feeding hopper, a 21-washing roller, a 22-concrete foundation, a 23-mud receiving tank bracket and a 24-connecting rod.

Detailed Description

In order to make the objects, technical solutions and advantageous effects of the present utility model more apparent, preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate understanding of the skilled person.

Example 1

As shown in fig. 2-4, the tailing cleaning system comprises a sand washing device, wherein the sand washing device comprises a tailing feeding pipe 1, a sand washing tank and a high-pressure water pipe 2.

The sand washing tank comprises a tank body 3 and a sand washing inner cylinder 4 arranged in the tank body 3, the sand washing inner cylinder 4 is used for providing a space for contacting, mixing and washing tailings and high-pressure water, the sand washing inner cylinder 4 is of any hollow or hollow cavity structure with openings at the upper part and the lower part, such as a hollow straight tubular structure, a spherical pipe with two small ends and large middle parts, a trumpet-shaped pipe, an S-shaped pipe and the like, and the hollow pipe structure can be deformed in any way. The sand washing inner cylinder 4 is fixed in the tank body 3 through a bracket.

The tailing feeding pipe 1 comprises a feeding main pipe 11 and feeding branch pipes 12, one ends of the feeding branch pipes 12 are connected with the feeding main pipe 11, and the other ends of the feeding branch pipes are inserted into the sand washing inner cylinder 4 from an opening above the sand washing inner cylinder 4. The high-pressure water pipe 2 passes through the tank wall of the tank body 3, the sand washing inner cylinder 4 is inserted from the lower opening of the sand washing inner cylinder 4, each sand washing inner cylinder 4 is provided with an independent high-pressure water pipe 2, the high-pressure water pipe 2 is supplied with water by a water pump, and the high-pressure water is added into the sand washing inner cylinder 4. The outlet of the high-pressure water pipe is provided with a spray head or a spray nozzle, and the high-pressure water is dispersed into high-pressure water trickles through the spray head or the spray nozzle, so that the high-pressure water is fully mixed with the tailings, contacts with the tailings, and flushes the tailings. As a preferred method, the nozzle of the spray head is vertically upwards, so that the sprayed high-pressure water is vertically upwards flushed.

The lower part of the tank body 3 is conical, the conical bottom is provided with a sand discharge pipe 5, and the side surface of the upper part of the tank body 3 is provided with a mud discharge pipe 6. The tailings are fully contacted and washed with high-pressure water in the sand washing inner cylinder 4, so that the separation of fine sand and fine mud in the tailings is promoted, the residual medicament in the tailings is also separated, and floats above the materials in the tank body 3 in a foam layer form, and the separated fine mud floats at the upper part and is discharged from the mud discharge port 6; the separated fine sand sinks due to the large specific gravity and is discharged from the sand discharge pipe 5. The sand washing tank provided by the utility model can realize the flushing and separation of sediment in tailings, simultaneously respectively discharge mud and sand from the sand washing tank, and the structure of the inner cylinder sleeve outer cylinder between the tank body 3 and the sand washing inner cylinder 4 can ensure that the mud and sand after washing and separation still has sufficient sedimentation and separation space outside the sand washing inner cylinder 4 (a cavity between the inner wall of the tank body 3 and the outer wall of the sand washing inner cylinder 4), so that the separation effect of the mud and sand is further improved.

The tank top of the tank body 3 is provided with a scraping opening 7, a floating foam scraper 8 is arranged at the scraping opening 7, and a floating foam collecting tank 9 is arranged beside the scraping opening 7. The froth scraping plate 8 comprises a rotating shaft A81 and a froth scraping frame 82 fixed around the rotating shaft A81; the rotating shaft A81 is driven by a scraper motor 83. The both ends of pivot A81 are equipped with the support respectively, support the tank deck at the jar body 3 with the foam scraper blade 8 through the support, and scraper motor 83 drives pivot A81 and rotates, and pivot A81 drives and scrapes the foam square frame 82 and rotate, and then scrapes the foam that washes down, scrapes the foam square frame 82 and in the scattering of rotating the in-process from taking and raise the foam that scrapes to the foam collecting vat 9 of scraping the side of material mouth 7.

More than one sand washing inner cylinder 4 is arranged.

Alternatively, the high-pressure water pipe 2 may be designed as a water supply structure including a water inlet main pipe and a water inlet branch pipe, the water inlet main pipe is inserted into the tank body 3 through the side wall of the tank body, and the water inlet branch pipe is communicated with the sand washing inner cylinder 4 from the water inlet main pipe; each sand washing inner cylinder 4 corresponds to a water inlet branch pipe, the water inlet branch pipe is inserted into the sand washing inner cylinder 4 from the opening at the lower part, and a nozzle or a spray head for vertically spraying upwards is arranged on the water inlet branch pipe.

Example 2

As shown in fig. 5 to 7, the tailings cleaning system comprises a elutriation roller, wherein the elutriation roller comprises a framework 11, a cylindrical filter screen fixed through the framework 11, a rotating shaft B15 and a roller motor 13. One end of the cylindrical filter screen is provided with a roller feed hopper 20, and the other end is provided with a sand discharge channel 14.

The skeleton 11 is cylindrical in shape as a whole, and serves to support a cylindrical screen. The cylindrical filter screen is welded or bolted to the frame 11, or clamped and connected by a clamping plate, and any frame 11 structure capable of fixing the cylindrical filter screen can be used. The framework 11 is made of stainless steel and comprises a circular framework 111 and an axial framework 112, and the axial framework 112 is vertically welded with the circular framework 111, so that the circular frameworks 111 are fixed at equal intervals and concentrically. The rotating shaft B15 passes through the center of the framework 11 and is fixedly connected with the framework 11 through a connecting rod 24. The rotating shaft B15 is in transmission connection with the roller motor 13. Two sides of the cylindrical filter screen are respectively provided with a flushing pipe 16, and the flushing pipe 16 is provided with a nozzle facing the washing roller. The drum motor 13 drives the frame 11 and the cylindrical filter screen to rotate, and fine sand entering the elutriation drum is elutriated by water in the rotating process to thoroughly separate sand from mud. The washing pipe 16 washes the cylindrical screen, prevents the cylindrical screen from being blocked, supplies washing water to the material inside the cylindrical screen, and performs a washing function on the fine sand in the tub. The elutriated mud leaks out of the cylindrical screen, and fine sand remains in the cylindrical screen and is discharged from the sand discharge passage 14.

Preferably, the spiral baffle 17 is welded on the inner wall of the cylindrical filter screen, the travelling path of the material in the cylindrical filter screen can be prolonged by arranging the baffle 17, the washing effect can be prolonged, the cleaning travelling path of fine sand can be prolonged by more than ten times after the baffle 17 is arranged as a parallel double-spiral baffle, the washing separation effect is enhanced, good washing effect can be obtained under the condition of shortening the size of the washing roller, the construction cost of the washing roller 21 is saved, and the power of the roller motor 13 can be reduced and the energy consumption is saved due to the shortening of the length of the washing roller.

The sand discharging channel 14 can be any structure capable of discharging materials in the roller, such as a sand discharging pipe or a sand discharging plate, and the main function of the sand discharging channel is to discharge fine sand which is thoroughly separated from mud after washing. The sand discharge channel 14 is not required, so that the washed sand after washing can automatically flow out along with the rotation of the cylindrical filter screen.

As a preferential scheme, the lower part of the elutriation roller is provided with a mud receiving groove 18, mud filtered by the cylindrical filter cylinder 10 enters the mud receiving groove 18, the mud receiving groove 18 is a square groove, the left and right groove walls (the left and right directions are based on the direction of the attached drawing 5) of the mud receiving groove 18 are provided with radians matched with the cylindrical filter screen, the mud receiving groove 18 is arranged to be close to the high feeding side of the elutriation roller, is close to the inclined structure with the low high end and the low end of the discharging side, and is provided with a mud water discharge pipe 19 at the lower side, and the high end and the low end of the mud receiving groove 18 are in favor of the discharge of mud.

According to the utility model, the elutriation roller is designed into a structure that a cylindrical filter screen is added to a framework 11, a flushing pipe 16 is arranged outside the cylindrical filter screen, materials can be elutriated while being filtered in the cylindrical filter screen, so that elutriation separation of adhered materials and adhered materials is realized, and tiny adhered materials which are elutriated after separation leak out through the filter screen, and are further separated from the adhered materials; the cylindrical structure of the utility model ensures that the material is elutriated while being conveyed in the cylindrical filter screen, and once the fine adhesion material is elutriated, the fine adhesion material can be immediately discharged from the meshes of the cylindrical filter screen, and the cylindrical structure is a continuous elutriation and separation process, so that the functions of layer-by-layer elutriation of sand washing and separation of the immediately after elutriation can be realized, the fine adhesion material is elutriated and peeled layer by layer, and the thorough separation of the fine adhesion material and the adhered material is realized.

Example 3

As shown in fig. 1-7, the tailings cleaning system includes a sand washing apparatus, such as example 1, and a elutriation drum, such as example 2.

In this embodiment, the sand discharge pipe 5 is connected to the drum feed hopper 20, and the sand washing device of embodiment 1 and the elutriation drum of embodiment 2 are used in series, and the sand washing device and the elutriation drum cooperate to achieve sufficient separation of mud and sand in the tailings.

The scouring and preliminary separation of fine sand and mud in tailings are completed in the fine sand device, the preliminary separated fine sand is further elutriated in the elutriation roller, so that fine sand with extremely high purity is obtained, the obtained fine sand can be used as a concrete raw material, the alkali aggregate reaction value of the concrete can meet the safety requirement of the concrete, and the aim of using the treated tailings as the concrete raw material is truly realized.

The obtained fine sand is fully washed to remove fine mud, even if the fine sand is not dried, the fine sand is only piled up naturally, the highest water content of the fine sand is not more than 7%, and the sand pile is loose and does not agglomerate.

In addition, the sand washing water can be recycled after sedimentation, and the wastewater is discharged zero.

When the obtained fine sand is added into concrete for use, the alkali aggregate reaction value of the concrete is not increased, the consumption of cement can be reduced, and taking the concrete with the total weight of 2400 kg as an example, the sand washing addition amount of the embodiment is 200 kg, the consumption of cement can be reduced by about 20-30 kg correspondingly to obtain the concrete with the same quality index, the consumption of water is reduced by 10-15 kg, and the expansion rate of the obtained concrete after 14 days is 0.09% as measured by the alkali aggregate reaction value.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the utility model, and that, although the utility model has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the utility model as defined by the appended claims.

Claims (10)

1. The tailing cleaning system is characterized by comprising a sand washing device; the sand washing device comprises a tailing feeding pipe (1), a sand washing tank and a high-pressure water pipe (2), wherein the sand washing tank comprises a tank body (3) and a sand washing inner cylinder (4) arranged in the tank body (3);

the lower part of the tank body (3) is conical, and the conical bottom is provided with a sand discharge pipe (5); a mud discharging pipe (6) is arranged on the side surface of the upper part of the tank body (3); the sand washing inner cylinder (4) is fixed in the tank body (3) through a bracket;

the tailing feeding pipe (1) is inserted into the sand washing inner cylinder (4) from the upper part;

the high-pressure water pipe (2) passes through the tank body (3), the sand washing inner cylinder (4) is inserted from the bottom, and a nozzle is arranged at the outlet of the high-pressure water pipe (2).

2. A tailings cleaning system according to claim 1, wherein the sand washing inner cylinder (4) has any cavity structure with openings at the upper and lower parts respectively.

3. The tailing cleaning system according to claim 2, wherein more than one sand washing inner cylinder is provided; the tailing feeding pipe (1) comprises a feeding main pipe (11) and a feeding branch pipe (12); one end of a feeding branch pipe (12) is connected with a feeding main pipe (11), and the other end of the feeding branch pipe is inserted into the sand washing inner cylinder (4) from an upper opening.

4. The tailing cleaning system according to claim 2, characterized in that a scraping opening (7) is formed in the top of the tank body (3), a floating foam scraper (8) is arranged at the scraping opening (7), and a floating foam collecting tank (9) is arranged beside the scraping opening (7);

the foam scraping plate (8) comprises a rotating shaft A (81) and a foam scraping box (82) fixed around the rotating shaft A (81); the rotating shaft A (81) is driven by a scraper motor (83).

5. The tailing cleaning system according to claim 1, wherein more than one sand washing inner cylinder (4) is provided; the high-pressure water pipe (2) comprises a water inlet main pipe and a water inlet branch pipe; the water inlet main pipe penetrates through the side wall of the tank body and is inserted into the tank body (3), and the water inlet branch pipe is communicated with the sand washing inner cylinder (4) from the water inlet main pipe; each sand washing inner cylinder (4) corresponds to one water inlet branch pipe, the water inlet branch pipe is inserted into the sand washing inner cylinder (4) from the opening at the lower part, and a spray head is arranged at the outlet of the water inlet branch pipe.

6. The tailing cleaning system according to claim 1, wherein more than one sand washing inner cylinder (4) is provided; each sand washing inner cylinder (4) is provided with an independent high-pressure water pipe (2), and the high-pressure water pipe (2) is inserted into the sand washing inner cylinder (4) from the lower opening.

7. The tailings cleaning system of any one of claims 1 to 5, further comprising a elutriation drum (21); the elutriation roller (21) comprises a framework, a cylindrical filter screen fixed by the framework and a roller motor (13);

the roller motor (13) is in transmission connection with the framework;

the sand discharge pipe (5) is connected to the feeding end of the elutriation roller (21); the discharge end of the elutriation roller (21) is provided with a sand discharge channel (14).

8. The tailing washing system of claim 7, wherein the washing drum (21) is provided with a flushing pipe (16) on both sides, and nozzles directed towards the washing drum (21) are provided on the flushing pipe (16).

9. The tailings cleaning system of claim 8, wherein the elutriation drum (21) further comprises a spindle B (15); the framework comprises a circular framework (111) and an axial framework (112); the annular frameworks (111) are concentrically and at intervals fixed through the axial frameworks (112); the rotating shaft B (15) passes through the center of the framework and is fixedly connected with the framework; the rotating shaft B (15) is in transmission connection with the roller motor (13); the sand discharge channel (14) is a sand discharge pipe or a sand discharge plate.

10. A tailings cleaning system according to claim 8 or 9, wherein a baffle (17) is provided in the cylindrical screen for extending the travel of the material in the cylindrical material; the baffle (17) is spirally arranged along the inner wall of the cylindrical filter screen; the baffle (17) is provided with two baffle plates which are arranged in parallel.