Cross-scale multi-element aggregate high-concentration slurry self-flow filling device

Abstract

The utility model discloses a kind of cross-scale multi-element aggregate high concentration slurry self-flow filling device, it is related to mine production system field, the utility model includes deep cone thickener, cement bin and aggregate bin, deep cone thickener is connected with the feed inlet of agitator barrel by tailings flow guide pipe, electric gate valve and slag slurry pump are installed in proper order on tailings flow guide pipe, the discharge outlet of cement bin is equipped with screw conveyor, agitator barrel feed inlet is connected with by pipeline in screw conveyor discharge outlet intercommunication, the discharge outlet of aggregate bin is equipped with feeder, feeder discharge outlet is equipped with vibrating screen, vibrating screen discharge outlet is equipped with belt conveyor, agitator barrel feed inlet is connected with by pipeline in belt conveyor discharge outlet intercommunication, the discharge outlet of the described agitator barrel is connected with the filling stope to be filled by self-flow filling pipeline, the utility model is filled with high concentration tailings, cross-scale multi-element aggregate's coarse and fine particle complementary filling slurry porosity, and cross-scale multi-element aggregate high concentration self-flow slurry is prepared.

Description

Technical Field

[0001] This utility model relates to the technical field of mining production systems, and in particular to a multi-scale, multi-aggregate high-concentration slurry self-flowing filling device. Background Technology

[0002] Currently, mines use two filling methods: coarse aggregate + cement filling and tailings + cement filling. The coarse aggregate + cement filling method faces challenges such as insufficient aggregate supply and unreasonable multi-element coarse aggregate gradation design, leading to high slurry bleeding rates. This not only forces multiple filling operations in the stope but also causes significant stratification, segregation, and dehydration of the slurry within the stope during filling, ultimately resulting in significantly uneven strength distribution of the filling body, severely impacting the safety of stope support and the efficiency of subsequent mining operations. The tailings + cement filling method uses a medium-to-low concentration suspension containing a large amount of free water, requiring dewatering through a goaf dewatering system before solidification. This results in poor impermeability, low strength upper limit, and easy settling and pipe blockage during long-distance transportation. It is also sensitive to tailings particle size and difficult to adjust the process. Existing filling slurries suffer from technical problems such as unreasonable multi-element coarse aggregate gradation design, low slurry concentration control accuracy, and low automation of proportioning. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a self-flowing filling device for high-concentration slurry of multi-scale multi-aggregate aggregates. Existing filling slurries suffer from technical problems such as unreasonable multi-aggregate gradation design, low slurry concentration control accuracy, and low degree of automation in proportioning.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A multi-scale, multi-aggregate high-concentration slurry self-flowing filling device includes a deep cone thickener, a cement silo, and an aggregate silo. The deep cone thickener is connected to the feed inlet of a mixing tank via a tailings diversion pipe. An electric gate valve and a slurry pump are sequentially installed on the tailings diversion pipe. A screw conveyor is installed at the discharge outlet of the cement silo, and the discharge outlet of the screw conveyor is connected to the feed inlet of the mixing tank via a pipeline. A feeder is installed at the discharge outlet of the aggregate silo, and a vibrating screen is installed at the discharge outlet of the feeder. A belt conveyor is installed at the discharge outlet of the vibrating screen, and the discharge outlet of the belt conveyor is connected to the feed inlet of the mixing tank via a pipeline. The discharge outlet of the mixing tank is connected to the mining area to be filled via a self-flowing filling pipeline.

[0005] Furthermore, a flow meter and a concentration meter are sequentially installed after the slurry pump on the tailings diversion pipe.

[0006] Furthermore, an electric reversing valve is installed between the concentration meter on the tailings drainage pipe and the mixing tank, and the other outlet end of the electric reversing valve is connected to an emergency pool.

[0007] Furthermore, a belt scale is installed on the belt conveyor at the position corresponding to the discharge port of the vibrating screen.

[0008] Furthermore, a micro powder scale is installed between the discharge port of the cement silo and the inlet of the screw conveyor.

[0009] Furthermore, the screw conveyor is a two-stage conveyor.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. Aggregate bins, feeders, and vibrating screens mix aggregates of different particle sizes and materials to form multi-scale multi-aggregate with reasonable gradation of coarse aggregates, thus solving the technical problem of unreasonable gradation design of coarse aggregates in existing filling slurries.

[0011] 2. A flow meter and a concentration meter are installed sequentially after the slurry pump on the tailings diversion pipe. A belt scale is installed at the corresponding position of the vibrating screen discharge port on the belt conveyor. A micro powder scale is installed between the discharge port of the cement silo and the feed port of the screw conveyor. This can accurately control the amount of tailings underflow, cement and aggregate, realize automated high-precision proportioning, and directly solve the technical problem of low automation of existing filling slurry proportioning.

[0012] 3. The tailings of this invention are processed by a deep cone thickener and a slurry pump to form a high-concentration tailings underflow, which solves the problem of low concentration control accuracy of existing filling slurry. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the system structure of this utility model; In the picture: 1. Deep cone thickener; 2. Electric gate valve; 3. Slurry pump; 4. Flow meter; 5. Concentrator; 6. Emergency tank; 7. Electric directional valve; 8. Tailings diversion pipe; 9. Cement silo; 10. Screw conveyor; 11. Micro powder scale; 12. Gravity filling pipeline; 13. Aggregate bin; 14. Feeder; 15. Vibrating screen; 16. Belt conveyor; 17. Belt scale; 18. Mixing tank; 101. Primary screw conveyor; 102. Secondary screw conveyor. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0015] like Figure 1As shown, a multi-scale, multi-aggregate high-concentration slurry self-flowing filling device includes a deep cone thickener 1, a cement silo 9, and an aggregate silo 13. The deep cone thickener 1 is connected to the inlet of a mixing tank 18 via a tailings diversion pipe 8. The deep cone thickener 1 separates tailings from mineral processing wastewater to produce a high-concentration tailings underflow. An electric gate valve 2 and a slurry pump 3 are installed sequentially on the tailings diversion pipe 8. The electric gate valve 2 is used to control the flow of tailings into the tailings diversion pipe 8. Because the tailings underflow has high viscosity and cannot achieve gravity flow, the slurry pump 3 on the tailings diversion pipe 8 transports the high-concentration underflow to the mixing tank 18. A screw conveyor 10 is installed at the outlet of the cement silo 9. The outlet of the screw conveyor 10 is connected to the mixing tank 18 via a pipe. The cement in the cement silo is difficult to flow by gravity, so a screw conveyor 10 is installed to transport the cement to the mixing drum 18. The aggregate bin 13 is equipped with a feeder 14 at its discharge port, which provides power for the aggregate preparation. The feeder 14 is equipped with a vibrating screen 15 at its discharge port, which separates the mixed aggregate into multi-grade aggregate according to the particle size standard to form multi-scale multi-element aggregate. The vibrating screen 15 is equipped with a belt conveyor 16 at its discharge port, which is connected to the feed port of the mixing drum 18 through a pipeline. The belt conveyor 16 efficiently transfers the multi-scale multi-element aggregate to the mixing drum 18. The discharge port of the mixing drum 18 is connected to the mining area to be filled through a gravity filling pipeline 12.

[0016] After the slurry pump 3 is installed on the tailings diversion pipe 8, a flow meter 4 and a concentration meter 5 are installed in sequence. The flow meter 4 is used to measure the flow rate of the tailings underflow through the tailings diversion pipe 8 and to accurately control the amount of tailings underflow entering the mixing tank 18. The concentration meter 5 is used to measure the concentration of the tailings underflow in the tailings diversion pipe 8.

[0017] An electric reversing valve 7 is installed between the concentration meter 5 on the tailings diversion pipe 8 and the mixing tank 18. The other outlet end of the electric reversing valve 7 is connected to the emergency pool 6. The electric reversing valve 7 can switch the flow channel of the tailings underflow. When the tailings underflow needs to be transported normally, the tailings underflow flows directly to the tailings diversion pipe 8 after the electric reversing valve 7 is opened. When wastewater or waste material appears, the wastewater can be directly discharged into the emergency pool 6 by opening the electric reversing valve 7.

[0018] A belt scale 17 is provided on the belt conveyor 16 at the position corresponding to the discharge port of the vibrating screen 15. During the continuous conveying of multi-scale multi-element aggregates by the belt conveyor 16, the belt scale 17 measures the instantaneous flow rate and cumulative weight of the multi-scale multi-element aggregates in real time.

[0019] A micro powder scale 11 is provided between the discharge port of the cement silo 9 and the inlet of the screw conveyor 10. The micro powder scale 11 continuously measures the cement at the discharge port of the cement silo 9 and controls the amount of cement entering the mixing tank 18.

[0020] The screw conveyor 10 is a two-stage conveyor, consisting of a primary screw conveyor 101 and a secondary screw conveyor 102. The two screw conveyors are connected in series to form a segmented conveying system, which enables the long-distance stable conveying of cement.

[0021] When in use, start the deep cone thickener and open the electric gate valve 2 at the discharge port of the deep cone thickener. Under the power of the slurry pump 3, the high-concentration tailings underflow is detected by the flow meter 4 and the concentration meter 5. When the tailings underflow passes through the electric reversing valve 7, the tailings underflow flows directly to the tailings diversion pipe 8 after the electric reversing valve 7 is opened when normal tailings underflow needs to be transported. When wastewater or waste material is present, the wastewater can be directly discharged into the emergency pool 6 by opening the electric reversing valve 7.

[0022] At the same time as starting the deep cone thickener, start the cement silo 9, so that the cement in the cement silo 9 is weighed by the micro powder scale 11, and finally the cement is transported to the mixing tank 18 by the screw conveyor 10.

[0023] At the same time as starting the deep cone thickener, start the aggregate bin 13. The aggregate in the aggregate bin 13 passes through the feeder 14, then through the vibrating screen 15 to screen the coarse aggregate particle size, and finally through the belt scale 17 to quantitatively measure and then through the belt conveyor 10 to send the multi-scale multi-element aggregate to the mixing tank 18.

[0024] The cement, high-concentration tailings underflow, and multi-scale multi-aggregate are fully mixed in the mixing tank 18 to form a self-flowing multi-scale multi-aggregate high-concentration slurry, which is then transported to the underground filling site through the self-flowing filling pipeline 12.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-scale, multi-aggregate, high-concentration slurry self-flowing filling device, characterized in that: The system includes a deep cone thickener (1), a cement silo (9), and an aggregate silo (13). The deep cone thickener (1) is connected to the feed inlet of the mixing tank (18) via a tailings diversion pipe (8). An electric gate valve (2) and a slurry pump (3) are installed sequentially on the tailings diversion pipe (8). A screw conveyor (10) is installed at the discharge port of the cement silo (9). The discharge port of the screw conveyor (10) is connected to the feed inlet of the mixing tank (18) via a pipe. A feeder (14) is installed at the discharge port of the aggregate silo (13). A vibrating screen (15) is installed at the discharge port of the feeder (14). A belt conveyor (16) is installed at the discharge port of the vibrating screen (15). The discharge port of the belt conveyor (16) is connected to the feed inlet of the mixing tank (18) via a pipe. The discharge port of the mixing tank (18) is connected to the mining area to be filled via a gravity filling pipe (12).

2. The multi-scale multi-aggregate high-concentration slurry self-flowing filling device according to claim 1, characterized in that: A flow meter (4) and a concentration meter (5) are installed sequentially after the slurry pump (3) on the tailings diversion pipe (8).

3. The multi-scale multi-aggregate high-concentration slurry self-flowing filling device according to claim 2, characterized in that: An electric reversing valve (7) is provided between the concentration meter (5) on the tailings drainage pipe (8) and the mixing tank (18), and the other outlet end of the electric reversing valve (7) is connected to the emergency pool (6).

4. The multi-scale multi-aggregate high-concentration slurry self-flowing filling device according to claim 1, characterized in that: A belt scale (17) is provided on the belt conveyor (16) at the position corresponding to the discharge port of the vibrating screen (15).

5. The multi-scale multi-aggregate high-concentration slurry self-flowing filling device according to claim 1, characterized in that: A micro powder scale (11) is provided between the discharge port of the cement silo (9) and the inlet of the screw conveyor (10).

6. The multi-scale, multi-aggregate high-concentration slurry self-flowing filling device according to any one of claims 1-5, characterized in that: The screw conveyor (10) is a two-stage conveyor.

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