Filling system suitable for different filling body strengths and filling multiple lines

Abstract

The utility model belongs to the technical field of underground mine engineering, and particularly discloses a filling system suitable for different filling body strengths and filling multiple lines. A discharging port of a tailing conveying pump station of the filling system is communicated with a cyclone and a feeding port of a deep-cone thickener, a discharging port of the cyclone and a discharging port of a flocculating agent adding subsystem are communicated with the feeding port of the deep-cone thickener, and a discharging port of the deep-cone thickener and a discharging port of a curing agent adding subsystem are communicated with a feeding port of a stirring barrel. A discharging opening of the stirring barrel communicates with a feeding opening of the filling slurry conveying system, and the filling slurry conveying system conveys filling slurry to an underground to-be-filled area through a pipeline; and the control subsystem comprises an electric gate valve I and an electric gate valve II which are connected in series on a connecting pipeline of the tailing conveying pump station, the cyclone and the deep-cone thickener. The utility model has the characteristics of convenient operation, strong adaptability, reliable filling and less water consumption.

Description

Technical Field

[0001] This utility model belongs to the field of underground mining engineering technology, specifically relating to a filling system that is easy to operate, highly adaptable, reliable in filling, and consumes little water, suitable for different filling body strengths and filling ratios. Background Technology

[0002] In the field of underground mining engineering, backfilling mining is of great significance to the entire mine: on the one hand, it can improve the underground working environment, recover ore resources as much as possible, and extend the mine's lifespan; on the other hand, it can promote the sustainable development of green mines and realize the vision of "no waste rock leaving the pit, no tailings entering the dam, and no surface subsidence." However, the tailings used for backfilling have a significant impact on the effectiveness of mine backfilling. Suitable backfilling tailings should have a reasonable particle size distribution, appropriate permeability, good fluidity, high strength, and economic efficiency. However, due to the differences in ore types, beneficiation processes, and equipment between each mine, the properties of tailings produced by beneficiation plants vary greatly, and the terrain conditions of each mine are unique. Therefore, combining the selection principles of backfilling tailings, while meeting the backfilling requirements, shortening the curing time of the backfill body in the turnover stope, reducing backfilling costs, consuming as much beneficiation plant tailings as possible to reduce tailings entering the dam, and meeting the backfilling ratio requirements under different terrain conditions, has become an important topic for the industry to study backfilling mining technology.

[0003] However, existing backfilling systems generally only support full tailings backfilling and graded tailings backfilling. In production, however, it's often necessary to use both methods interchangeably depending on the specific circumstances. This requires two independent backfilling systems, leading to higher equipment costs and more difficult maintenance. Furthermore, a single tailings backfilling system can easily result in excessive tailings requiring emptying or insufficient tailings supply, increasing pressure on the tailings dam or necessitating shutdowns. Moreover, a single full tailings backfilling system results in excessively long curing times, extending the mining cycle and reducing the mining efficiency of limited-turnover stopes per unit time. In addition, existing backfilling systems often use production water to add flocculants. While this ensures the quality of the diluted flocculant, it results in high water consumption. Furthermore, the single dilution of the flocculant with production water can lead to uneven dissolution of the flocculants, causing slow dewatering and sedimentation of the slurry. To address this uneven dissolution, a mixing mechanism is often added, which solves the problem but increases the overall structural complexity and energy consumption.

[0004] Therefore, it is necessary to design a process technology that ensures the strength of the backfill body, allows for switching between full tailings backfill and graded tailings backfill according to actual production conditions, increases the reliability of the backfill system, shortens the curing time of the backfill body in the turnover stope, reduces the cost of backfill mining, is applicable to different backfill ratios, and ensures safe backfill production in the mine. Utility Model Content

[0005] In order to solve the problems mentioned in the background art, the present invention provides a filling system that is easy to operate, highly adaptable, reliable in filling, and consumes less water, and is suitable for different filling body strengths and filling ratios.

[0006] The filling system of this utility model, applicable to different filling body strengths and filling ratios, is implemented as follows: It includes a tailings conveying pump station, a hydrocyclone, a deep cone thickener, a flocculant addition subsystem, a solidifying agent addition subsystem, a mixing tank, a filling slurry conveying system, and a control subsystem. The inlet of the tailings conveying pump station is connected to the full tailings slurry pipe of the flotation workshop of the concentrator. The outlet of the tailings conveying pump station is connected to the inlets of the hydrocyclone and the deep cone thickener via pipelines. The outlet of the hydrocyclone is connected to the inlet of the deep cone thickener. The outlet of the flocculant addition subsystem is connected to the inlet of the deep cone thickener. The outlet of the deep cone thickener is connected to the inlet of the mixing tank. The outlet of the solidifying agent addition subsystem is connected to the inlet of the mixing tank. The outlet of the mixing tank is connected to the inlet of the filling slurry conveying system. The outlet of the filling slurry conveying system transports the filling slurry to the downhole filling area via pipelines.

[0007] The control subsystem includes electric gate valve I and electric gate valve II, which are connected in series on the pipeline connecting the outlet of the tailings conveying pump station to the inlet of the hydrocyclone and the deep cone thickener.

[0008] Furthermore, the filling slurry conveying system includes an emergency tank, a gravity-flow filling pipe, and a filling pump. The discharge port of the mixing tank is connected to the inlet of the emergency tank, the gravity-flow filling pipe, and the filling pump via pipes. An electric gate valve III is connected in series on the pipe connecting the discharge port of the mixing tank to the emergency tank. An electric gate valve IV is connected in series on the pipe connecting the discharge port of the mixing tank to the inlet of the gravity-flow filling pipe. An electric gate valve V is connected in series on the pipe connecting the discharge port of the mixing tank to the inlet of the filling pump.

[0009] Furthermore, the top of the hydrocyclone is provided with an overflow port I, which is connected to the tailings thickening tank and / or overflow return water tank of the concentrator through a pipe. The upper part of the deep cone thickener is provided with an overflow port II, which is connected to the overflow return water tank through a pipe.

[0010] Furthermore, this utility model also includes a centrifugal pump with its inlet extending into the overflow return water tank. The flocculant addition subsystem is provided with a primary diluent inlet and a secondary diluent inlet. The primary diluent inlet is connected to the production fire-fighting high-level water tank, and the secondary diluent inlet is connected to the outlet of the centrifugal pump through a pipeline.

[0011] Furthermore, the outlet of the centrifugal pump is connected via pipes to the discharge port at the bottom of the deep cone thickener, the inlet at the top of the mixing tank, and the emergency tank.

[0012] Furthermore, the tailings conveying pump station includes a feed pool and a slurry pump. The feed inlet of the feed pool is connected to the full tailings slurry pipe of the flotation workshop of the concentrator. The discharge outlet of the feed pool is connected to the feed inlet of the slurry pump. The overflow outlet of the feed pool is connected to the tailings thickening tank of the concentrator. The discharge outlet of the slurry pump is connected to the feed inlet of the hydrocyclone and the deep cone thickener through a pipeline.

[0013] Furthermore, the curing agent addition subsystem includes a curing agent silo, an air compressor station, and a screw metering conveyor. The high-pressure outlet of the air compressor station is connected to the curing agent silo, and the screw metering conveyor is located at the outlet end of the curing agent silo. The outlet of the screw metering conveyor is connected to the inlet of the mixing tank through a pipeline.

[0014] Furthermore, flow meters are installed on the pipes connecting the tailings conveying pump station, deep cone thickener, flocculant addition subsystem, and mixing tank outlets. A concentration meter is also installed on the pipe connecting the deep cone thickener outlet. Level gauges are installed on the top of the tailings conveying pump station, deep cone thickener, solidifier addition subsystem, overflow return water tank, and mixing tank. Electric gate valves I, II, III, IV, and V, the flow meters, concentration meters, and level gauges are electrically connected to the controller of the control subsystem.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model, by adding a hydrocyclone and an electric gate valve before the deep cone thickener, enables free switching between full tailings backfilling and graded tailings backfilling. Not only can a single system satisfy both full and graded tailings backfilling, improving application flexibility and reducing equipment costs and maintenance difficulty; it also minimizes the consumption of full tailings in the concentrator to reduce tailings dam pressure. Furthermore, when the strength of full tailings backfilling is insufficient for actual production requirements, it can be quickly switched to graded tailings backfilling to increase the strength of the backfill body to meet production requirements, enhancing the reliability of the backfilling system. Moreover, for mines with a limited number of turnover stops, since the required strength of each layer of backfill body differs, using graded tailings backfilling significantly shortens the curing time for some layers to reach the required strength compared to full tailings backfilling. This effectively solves the problem of increased mining cycles due to stope maintenance, increasing the mining efficiency of limited turnover stops per unit time.

[0017] 2. The filling system of this utility model has a simple structure and is easy to operate. In particular, by setting flow meters, concentration meters and level gauges at each stage of filling for real-time monitoring, and cooperating with corresponding gate valve linkage and controller control, it can not only realize unmanned one-button filling and precise control of filling parameters (flow rate, concentration, ratio), reducing human intervention errors; but also dynamically and automatically switch filling materials according to the filling effect on site to adapt to the production plan; and can reasonably plan the filling and maintenance cycle and mining progress of the stope according to the actual situation. Therefore, it is suitable for full tailings filling mines with fine tailings particle size, uneven gradation and insufficient turnover stope causing mining stagnation. Therefore, it has a wide range of applications.

[0018] 3. This utility model's filling system innovatively employs two water sources for two-stage dilution of the flocculant, solving the problem of uneven floc dissolution and slow slurry dewatering and sedimentation caused by traditional single-stage dilution. Furthermore, connecting the air compressor station to the solidifier silo breaks up arches and prevents solidifier adhesion. A screw metering conveyor at the solidifier silo outlet allows for quantitative weighing and discharging of the solidifier. Combined with the level gauge in the mixing tank and the flow meter and concentration meter at the deep cone thickener outlet, precise slurry-to-solidifier ratio is ensured, effectively controlling the curing time of the filling body in the stope. An overflow return water pool is installed, and a centrifugal pump connects the overflow water to the flocculant addition subsystem, fully utilizing recycled water resources. The overflow water is used to flush the deep cone thickener, mixing tank, emergency pool, and filling pipelines, reducing water consumption and achieving green and environmentally friendly mining production, while also extending the service life of equipment and pipelines.

[0019] 4. The filling slurry conveying system of this utility model, by setting up an emergency pool, gravity-flow filling pipe and filling pump, and cooperating with electric gate valves on each pipeline, can not only flexibly select pumping or gravity flow for filling according to the actual mining environment and filling ratio, thus adapting to various filling ratio requirements of mining areas under different terrain conditions and ensuring safe filling production in the mine; but also, in the event of failure of filling pipes and filling pumps or problems with underground filling operations, the prepared filling slurry can be sent to the emergency pool for temporary storage, which can avoid waste of filling slurry and production interruption, and improve fault tolerance and filling efficiency.

[0020] In summary, this utility model is characterized by convenient operation, strong adaptability, reliable filling, and low water consumption. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the filling system principle of this utility model;

[0022] Figure 2 This is a schematic diagram of the actual application of the filling system of this utility model;

[0023] In the diagram: 1-Tailings conveying pump station, 101-Feeding pool, 102-Slurry pump, 2-Cyclone separator, 3-Deep cone thickener, 301-Self-circulating pipe, 4-Flocculant addition subsystem, 5-Cure agent addition subsystem, 501-Cure agent silo, 502-Air compressor station, 503-Screw metering conveyor, 6-Agitator, 7-Filling slurry conveying system, 701-Emergency pool, 702-Self-flowing filling pipe, 703-Filling pump, 801-Electric gate valve I, 802-Electric gate valve II, 803-Electric gate valve III, 804-Electric gate valve IV, 805-Electric gate valve V, 9-Overflow return water pool, 10-Centrifugal pump, 11-Production fire-fighting high-level water pool, 12-Deep cone feed bucket, 13-Underflow pump, 14-Full tailings slurry pipe. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this does not limit the present invention in any way. Any changes or improvements made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0025] like Figure 1 and 2 As shown, the filling system of this utility model, applicable to different filling body strengths and filling ratios, includes a tailings conveying pump station 1, a hydrocyclone 2, a deep cone thickener 3, a flocculant addition subsystem 4, a solidifying agent addition subsystem 5, a mixing tank 6, a filling slurry conveying system 7, and a control subsystem. The inlet of the tailings conveying pump station 1 is connected to the total tailings slurry pipe 14 of the flotation workshop of the concentrator. The outlet of the tailings conveying pump station 1 is connected to the inlets of the hydrocyclone 2 and the deep cone thickener 3 via pipelines. The outlet of the hydrocyclone 2 is connected to the inlet of the deep cone thickener 3. The outlet of the flocculant addition subsystem 4 is connected to the inlet of the deep cone thickener 3. The outlet of the deep cone thickener 3 is connected to the inlet of the mixing tank 6. The outlet of the curing agent addition subsystem 5 is connected to the inlet of the mixing tank 6. The outlet of the mixing tank 6 is connected to the inlet of the filling slurry conveying system 7. The outlet of the filling slurry conveying system 7 conveys the filling slurry to the underground filling area through a pipeline.

[0026] The control subsystem includes electric gate valve I 801 and electric gate valve II 802, which are connected in series on the pipeline connecting the outlet of the tailings conveying pump station 1 to the inlet of the hydrocyclone 2 and the deep cone thickener 3.

[0027] The filling slurry conveying system 7 includes an emergency tank 701, a gravity-flow filling pipe 702, and a filling pump 703. The discharge port of the mixing tank 6 is connected to the inlet of the emergency tank 701, the gravity-flow filling pipe 702, and the filling pump 703 via pipes. An electric gate valve III 803 is connected in series on the pipe connecting the discharge port of the mixing tank 6 to the emergency tank 701. An electric gate valve IV 804 is connected in series on the pipe connecting the discharge port of the mixing tank 6 to the inlet of the gravity-flow filling pipe 702. An electric gate valve V 805 is connected in series on the pipe connecting the discharge port of the mixing tank 6 to the inlet of the filling pump 703.

[0028] The top of the hydrocyclone 2 is provided with an overflow port I, which is connected to the tailings thickening tank and / or overflow return water tank 9 of the concentrator through a pipe. The upper part of the deep cone thickener 3 is provided with an overflow port II, which is connected to the overflow return water tank 9 through a pipe.

[0029] This utility model also includes a centrifugal pump 10 with its inlet extending into the overflow return water tank 9. The flocculant addition subsystem 4 is provided with a primary diluent inlet and a secondary diluent inlet. The primary diluent inlet is connected to the production fire-fighting high-level water tank 11, and the secondary diluent inlet is connected to the outlet of the centrifugal pump 10 through a pipeline.

[0030] The outlet of the centrifugal pump 10 is connected to the discharge port at the bottom of the deep cone thickener 3, the inlet at the top of the mixing tank 6, and the emergency pool 701 via pipes.

[0031] The tailings conveying pump station 1 includes a feed pool 101 and a slurry pump 102. The feed inlet of the feed pool 101 is connected to the full tailings slurry pipe 14 of the flotation workshop of the concentrator. The discharge outlet of the feed pool 101 is connected to the feed inlet of the slurry pump 102. The overflow outlet of the feed pool 101 is connected to the tailings thickening tank of the concentrator. The discharge outlet of the slurry pump 102 is connected to the feed inlets of the hydrocyclone 2 and the deep cone thickener 3 through a pipeline.

[0032] The curing agent addition subsystem 5 includes a curing agent silo 501, an air compressor station 502, and a screw metering conveyor 503. The high-pressure air outlet of the air compressor station 502 is connected to the curing agent silo 501. The screw metering conveyor 503 is located at the outlet end of the curing agent silo 501. The outlet of the screw metering conveyor 503 is connected to the inlet of the mixing tank 6 through a pipeline.

[0033] Flow meters are installed on the pipes connected to the outlets of the tailings conveying pump station 1, deep cone thickener 3, flocculant addition subsystem 4, and mixing tank 6. A concentration meter is also installed on the pipe connected to the outlet of the deep cone thickener 3. Level gauges are installed on the tops of the tailings conveying pump station 1, deep cone thickener 3, solidifier addition subsystem 5, overflow return water tank 9, and mixing tank 6. Electric gate valves I 801, II 802, III 803, IV 804, V 805, flow meters, concentration meters, and level gauges are electrically connected to the controller of the control subsystem.

[0034] The controller is a PLC or industrial computer and its peripheral circuits.

[0035] A deep cone feed tank 12 is connected in series between the outlet of the hydrocyclone 2 and the inlet of the deep cone thickener 3. The outlet of the tailings conveying pump station 1 is connected to the inlet of both the hydrocyclone 2 and the deep cone feed tank 12 via pipelines. The outlet of the deep cone feed tank 12 is connected to the inlet of the deep cone thickener 3. The deep cone feed tank 12 acts as a buffer and dissipates energy when whole tailings slurry or graded tailings slurry enters the deep cone thickener 3, preventing damage to the deep cone thickener 3 due to excessive slurry impact.

[0036] The deep cone thickener 3 is also provided with a circulation return port on its side wall. The discharge port at the bottom of the deep cone thickener 3 is connected to the self-circulation pipe 301 connected to the circulation return port and the feed port of the mixing tank 6 through the underflow pump 13. Electric gate valves are respectively provided on the pipes connecting the discharge port at the bottom of the deep cone thickener 3 to the circulation return port and the feed port of the mixing tank 6.

[0037] The outlet of the centrifugal pump 10 is also connected to the discharge port at the bottom of the deep cone thickener 3 via a pipeline, and a gate valve is installed on the pipeline.

[0038] The flocculant is one or any combination of existing feasible flocculants for underground mine tailings backfilling.

[0039] The curing agent is one or any combination of existing feasible curing agents for underground mine tailings backfilling, including cement.

[0040] Example

[0041] S100: Depending on the type of slurry required for actual backfilling, if the actual backfilling requires the use of whole tailings slurry, then close electric gate valve I 801 and open electric gate valve II 802. Use slurry pump 102 to directly transport the whole tailings slurry in feed tank 101 to deep cone feed tank 12, which acts as a buffer and energy dissipation mechanism for the whole tailings slurry entering deep cone thickener 3, preventing damage to deep cone thickener 3 due to excessive slurry impact. If the actual backfilling requires the use of graded tailings, then open electric gate valve I 801 and close electric gate valve II 802. Use slurry pump 102 to transport the whole tailings slurry in feed tank 101 to hydrocyclone 2 for grading. The tailings in the upper part of hydrocyclone 2 flow by gravity to the tailings thickening tank of the concentrator, and the graded tailings in the lower part of hydrocyclone 2 are transported to deep cone feed tank 12, which acts as a buffer and energy dissipation mechanism for the graded tailings slurry entering deep cone thickener 3. The particle size limit for grading by hydrocyclone 2 is determined by backfilling test.

[0042] S200: Add flocculant to flocculant addition subsystem 4, and then introduce production water from production fire-fighting high-level water tank 11 and overflow water from overflow return water tank 9 into flocculant addition subsystem 4 to perform primary and secondary dilution of flocculant to fully dissolve flocculant. Then, introduce the diluted flocculant solution into deep cone thickener 3.

[0043] S300: The slurry in the deep cone feed tank 12 flows by gravity into the deep cone thickener 3 and reacts with the diluted flocculant. Then, after sufficient dehydration, concentration and sedimentation, the overflow water at the top of the deep cone thickener 3 flows into the overflow return water tank 9, and the high-concentration slurry at the bottom is pumped to the mixing tank 6 by the underflow pump 13.

[0044] S400: Based on the concentration and flow rate of the slurry delivered to the mixing tank 6, the cement in the curing agent silo 501 is weighed by the screw metering conveyor 503 and added to the mixing tank 6 to mix with the slurry; the air compressor station 502 introduces high-pressure gas into the curing agent silo 501 to break up the cement adhering to the bottom of the curing agent silo 501 or in the screw metering conveyor 503, so as to ensure accurate metering and delivery.

[0045] S500: The slurry and curing agent entering the mixing tank 6 are mixed evenly by high speed and flexible mixing to prepare a homogeneous filling slurry with good fluidity. Then the filling slurry is transported to the filling slurry conveying system 7.

[0046] S600: Based on the actual stope environment and filling ratio, when filling pump 703 is required for filling, close electric gate valve III 803 and electric gate valve IV 804 and open electric gate valve V 805. Use filling pump 703 to pump the filling slurry to the downhole area to be filled for filling operations. When gravity filling is required, close electric gate valve III 803 and electric gate valve V 805 and open electric gate valve IV 804. Let the filling slurry flow by gravity through the pipeline to the downhole area to be filled for filling operations. When there is a fault in any filling pipeline or a problem with the downhole filling operation, close electric gate valve IV 804 and electric gate valve V 805 and open electric gate valve III 803. Transport the prepared filling slurry to the emergency pool 701 for temporary storage. At the same time, close electric gate valve I 801 and electric gate valve II 802 and stop the supply of tailings slurry to the flotation workshop of the concentrator. After production returns to normal, resume filling operations according to the actual situation.

[0047] S700: After filling is completed, the overflow water in the overflow return pool 9 is pressurized by the centrifugal pump 10 to perform high-pressure flushing on the deep cone thickener 3, mixing tank 6, emergency pool 701 and all pipelines.

[0048] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A filling system suitable for different filler strengths and fill ratios, characterized in that: The system includes a tailings conveying pump station (1), a hydrocyclone (2), a deep cone thickener (3), a flocculant addition subsystem (4), a solidifying agent addition subsystem (5), a mixing tank (6), a filling slurry conveying system (7), and a control subsystem. The inlet of the tailings conveying pump station (1) is connected to the full tailings slurry pipe (14) of the flotation workshop of the concentrator. The outlet of the tailings conveying pump station (1) is connected to the inlets of the hydrocyclone (2) and the deep cone thickener (3) through pipelines. The outlet of the hydrocyclone (2) is connected to the inlet of the deep cone thickener. The feed inlet of the thickener (3) is connected, the discharge outlet of the flocculant addition subsystem (4) is connected to the feed inlet of the deep cone thickener (3), the discharge outlet of the deep cone thickener (3) is connected to the feed inlet of the mixing tank (6), the discharge outlet of the curing agent addition subsystem (5) is connected to the feed inlet of the mixing tank (6), the discharge outlet of the mixing tank (6) is connected to the feed inlet of the filling slurry conveying system (7), and the discharge outlet of the filling slurry conveying system (7) transports the filling slurry to the underground filling area through a pipeline; The control subsystem includes electric gate valve I (801) and electric gate valve II (802) connected in series on the pipeline connecting the outlet of the tailings conveying pump station (1) to the inlet of the hydrocyclone (2) and the deep cone thickener (3).

2. The filling system according to claim 1, applicable to different filler strengths and fill ratios, is characterized in that: The filling slurry conveying system (7) includes an emergency tank (701), a gravity filling pipe (702), and a filling pump (703). The outlet of the mixing tank (6) is connected to the inlet of the emergency tank (701), the gravity filling pipe (702), and the filling pump (703) through pipes. An electric gate valve III (803) is connected in series on the pipe connecting the outlet of the mixing tank (6) to the emergency tank (701). An electric gate valve IV (804) is connected in series on the pipe connecting the outlet of the mixing tank (6) to the inlet of the gravity filling pipe (702). An electric gate valve V (805) is connected in series on the pipe connecting the outlet of the mixing tank (6) to the inlet of the filling pump (703).

3. The filling system according to claim 2, applicable to different filler strengths and fill ratios, characterized in that: The top of the hydrocyclone (2) is provided with an overflow port I, which is connected to the tailings thickening tank and / or overflow return water tank (9) of the concentrator through a pipe. The upper part of the deep cone thickener (3) is provided with an overflow port II, which is connected to the overflow return water tank (9) through a pipe.

4. The filling system according to claim 3, applicable to different filler strengths and fill ratios, characterized in that: It is also equipped with a centrifugal pump (10) whose inlet extends into the overflow return water tank (9). The flocculant addition subsystem (4) is equipped with a primary diluent inlet and a secondary diluent inlet. The primary diluent inlet is connected to the production fire-fighting high-level water tank (11), and the secondary diluent inlet is connected to the outlet of the centrifugal pump (10) through a pipeline.

5. The filling system according to claim 4, applicable to different filler strengths and fill ratios, characterized in that: The outlet of the centrifugal pump (10) is connected to the discharge port at the bottom of the deep cone thickener (3), the inlet at the top of the mixing tank (6), and the emergency pool (701) via pipes.

6. The filling system according to claim 2, applicable to different filler strengths and fill ratios, characterized in that: The tailings conveying pump station (1) includes a feed pool (101) and a slurry pump (102). The feed inlet of the feed pool (101) is connected to the full tailings slurry pipe (14) of the flotation workshop of the concentrator. The discharge outlet of the feed pool (101) is connected to the feed inlet of the slurry pump (102). The overflow outlet of the feed pool (101) is connected to the tailings thickening pool of the concentrator. The discharge outlet of the slurry pump (102) is connected to the feed inlet of the hydrocyclone (2) and the deep cone thickener (3) through a pipeline.

7. The filling system according to any one of claims 3 to 6, applicable to different filler strengths and fill ratios, characterized in that: The curing agent addition subsystem (5) includes a curing agent silo (501), an air compressor station (502), and a screw metering conveyor (503). The high-pressure outlet of the air compressor station (502) is connected to the curing agent silo (501). The screw metering conveyor (503) is located at the outlet end of the curing agent silo (501). The outlet of the screw metering conveyor (503) is connected to the inlet of the mixing tank (6) through a pipe.

8. The filling system according to claim 7, applicable to different filler strengths and fill ratios, characterized in that: Flow meters are installed on the pipes connected to the outlets of the tailings conveying pump station (1), deep cone thickener (3), flocculant addition subsystem (4), and mixing tank (6). A concentration meter is also installed on the pipe connected to the outlet of the deep cone thickener (3). A level gauge is installed on the top of the tailings conveying pump station (1), deep cone thickener (3), solidifier addition subsystem (5), overflow return water tank (9), and mixing tank (6). Electric gate valve I (801), electric gate valve II (802), electric gate valve III (803), electric gate valve IV (804), electric gate valve V (805), flow meters, concentration meters, and level gauges are electrically connected to the controller of the control subsystem.

Images