CN208252153U - Tailings reconstruction slurry filling system - Google Patents

Abstract

The utility model provides a tailings remanufactured slurry filling system, which includes a transport vehicle for transporting the high-concentration tailings filter cake produced in a concentrator and formed by pressure filtration to a filling station, and a transport vehicle for centralized storage of a high-concentration tailings filter cake. And the high-concentration tailings filter cake is impacted and diluted by high-pressure water to form a filter cake storage bin for the flow output of the tailings mortar, which is used to filter and stir the tailings slurry output from the filter cake storage bin to obtain tailings mortar with a stable concentration. A slurry device and a filling slurry preparation device for preparing the tailings slurry with a stable concentration output from the tailings re-pulping device to form filling slurry and outputting it for goaf filling. The filter cake storage bin breaks up the high-concentration tailings filter cake through high-pressure water, and mixes and dilutes the tailings with water to obtain tailings mortar. The tailings re-slurry device filters and stirs the tailings slurry output from the filter cake storage bin, removes coarse particles in the tailings mortar and mixes the tailings sand and water evenly to obtain tailings mortar with a stable concentration.

Description

Tailings remanufactured slurry filling system

technical field

The utility model relates to the technical field of goaf filling, in particular to a tailing sand remanufacturing slurry filling system.

Background technique

At present, the filling process is mainly as follows: the tailings output from the concentrator with a concentration of about 20% is transported to the sand bin of the filling station for subsidence and dehydration, compressed air to make slurry, and the sand is released after the slurry concentration in the sand bin is stable. Add cement and additional water according to the sand ratio and concentration, and the slurry is stirred and then flowed or pumped to the goaf underground.

Usually, the ore dressing plant is far away from the filling station, and the height difference is large, so it is difficult for pumping to meet the tailings transportation requirements. In addition, sometimes there is insufficient tailing sand source in the concentrator, which makes it impossible to fill the goaf.

Utility model content

The utility model provides a tailing sand remanufactured slurry filling system to solve the problems of inconvenient tailing sand transportation and insufficient tailing sand sources, which lead to failure of goaf filling.

The technical scheme that the utility model adopts is as follows:

A tailings remanufactured slurry filling system, including a transport vehicle for transporting the high-concentration tailings filter cake produced by the concentrator and formed by pressure filtration to the filling station, and used for centralized storage of the high-concentration tailings filter cake and impacting it with high-pressure water and dilute the high-concentration tailings filter cake to form a filter cake storage bin for the flow output of the tailings slurry, a tailings re-slurry device for filtering and stirring the tailings slurry output from the filter cake storage bin to obtain a stable concentration of the tailings slurry, and a tailings re-slurry device for The filling slurry preparation device prepares the tailing slurry with a stable concentration output from the tailing sand re-pulping device to form filling slurry and outputs it for goaf filling.

Further, the bottom of the filter cake storage bin is provided with a control valve for controlling the opening and closing of the outlet at the bottom of the filter cake storage bin and a valve for high-pressure water impact and dilution of the high-concentration tailings filter cake output from the opened outlet. High pressure water gun.

Further, the tailings reslurry device includes a drum screen connected to the output end of the filter cake storage bin for filtering and removing the coarse particles in the tailing slurry output from the filter cake storage bin, and a drum screen connected to the output end of the drum screen for Stir the tailings mortar to obtain a stable concentration of the tailings mortar and prevent the tailings from depositing a mixing tank, and a slurry pump connected to the output end of the mixing tank for pumping the tailings mortar to the filling slurry preparation device.

Further, the filling slurry preparation device includes a sand bin connected to the output end of the slurry pump for sedimentation dehydration and compressed air slurry, a cement bin used to store cement, and a cement bin connected to the output end of the cement bin for metering and controlling cement. The screw weighing feeder for conveying the cement output from the silo, the output end of the sand silo and the output end of the screw weighing feeder are used to simultaneously accept quantitative tailing mortar and quantitative cement and carry out tailing mortar and cement feeding. The cement is initially stirred and mixed to obtain a mixer for filling slurry, and an activation mixer connected to the output end of the mixer for activating and mixing the filling slurry.

Further, the screw weighing feeder includes a screw feeder for conveying cement and controlling the conveying speed and a screw scale for measuring the conveyed cement; the screw scale is provided for sensing the weight change of the cement on the screw scale to The sensor for measurement, the screw feeder is equipped with a frequency conversion motor used to control the operating frequency of the screw feeder according to the change of sensor measurement; the feeding port of the screw feeder and the feeding port of the screw scale adopt a soft connection.

Further, the mixer includes a stirring tank, a stirring shaft running through the stirring tank, a stirring blade arranged on the stirring shaft for stirring tailing mortar and cement, a motor for driving the stirring blade to rotate, and a motor arranged between the motor and the stirring shaft for A reducer for speed matching between the motor and the stirring shaft; there are also multiple auxiliary blades on the stirring shaft, and the directions of adjacent auxiliary blades are opposite.

Further, the activation mixer includes a stirring box, a stirring rod running through the stirring box, a stirring rotor arranged on the stirring rod for activating and stirring the filling slurry, and a driving motor connected with the stirring rod to drive the stirring rotor to rotate; the stirring rotor includes a A rotor disk connected to the stirring rod and a rotor rod arranged on the rotor disk parallel to the axial direction of the stirring rod.

Further, there are two sand bins, and the two sand bins alternately feed and discharge sand.

Further, between the slurry pump and the sand bin, there is a sand inlet concentration meter for detecting the sand inlet concentration and a sand inlet flow meter for detecting the sand inlet flow rate; A sand concentration meter for sand concentration and a sand flow meter for detecting sand flow.

Further, the mixing tank and/or the sand bin is provided with a level gauge for detecting the liquid level.

Further, the sand bin is equipped with a high-pressure water automatic cleaning device for cleaning the sand bin.

The utility model has the following beneficial effects:

The tailings re-pulping filling system provided by the utility model includes a conveying vehicle, a filter cake storage bin, a tailings re-pulping device and a filling slurry preparation device. The transport vehicle can transport the high-concentration tailings filter cake formed by pressure filtration in the concentrator and the high-concentration tailings filter cake purchased from other concentrators to the filling station that needs to fill the tailings source, which can meet the filling station's requirements for filling tailings source needs. The use of transport vehicles to transport high-concentration tailings filter cakes can be transported to a longer distance, with less restrictions on transport, and is more economical than other transport methods. The filter cake storage bin can centrally store the high-concentration tailings filter cake transported by the transport vehicle, ensuring that tailings are available when the source of tailings is less, and can control the amount of output high-concentration tailings filter cake , and then control the proportion and concentration of the filling slurry to ensure the filling quality and filling effect, and improve the strength of the filling body. The filter cake storage bin breaks up the high-concentration tailings filter cake through high-pressure water, and mixes and dilutes the tailings with water to obtain tailings mortar. The tailings re-slurry device filters and stirs the tailings slurry output from the filter cake storage bin, removes coarse particles in the tailings mortar and mixes the tailings sand and water evenly to obtain tailings mortar with a stable concentration. The filling slurry preparation device can prepare tailing mortar with a stable concentration into filling slurry, and the filling slurry can provide filling material for goaf filling, so as to ensure the smooth progress of goaf filling. The tailing sand remanufacturing filling system proposed by the utility model provides a feasible remanufacturing mode, and is applied in production, and has a wider scope of application and a wider area of application.

In addition to the purposes, features and advantages described above, the present invention has other purposes, features and advantages. Below with reference to accompanying drawing, the utility model is described in further detail.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute an improper limitation of the utility model. In the attached picture:

Fig. 1 is a schematic diagram of a transport vehicle in a preferred embodiment of the present invention transporting a high-concentration tailings filter cake to a filter cake storage bin for storage;

Fig. 2 is a schematic diagram of the high-concentration tailings filter cake being formed into tailings slurry by the filter cake storage bin and the tailings re-pulping device of the preferred embodiment of the present invention;

Fig. 3 is a schematic diagram of preparing tailing mortar into filling slurry by the filling slurry preparation device of the preferred embodiment of the present invention;

Fig. 4 is the schematic diagram of the spiral weighing feeder of preferred embodiment of the present utility model;

Fig. 5 is the schematic diagram of the screw feeder of preferred embodiment of the present utility model;

Fig. 6 is one of the schematic diagrams of the mixer of the preferred embodiment of the present invention;

Fig. 7 is the second schematic diagram of the mixer of the preferred embodiment of the present invention;

Fig. 8 is the third schematic diagram of the mixer of the preferred embodiment of the present invention;

Fig. 9 is one of the schematic diagrams of the activation mixer of the preferred embodiment of the present invention;

Fig. 10 is the second schematic diagram of the activation mixer of the preferred embodiment of the present invention.

Explanation of reference signs:

1. High-concentration tailings filter cake; 2. Transportation vehicle; 3. Filter cake storage bin; 31. Outlet; 32. Control valve; 33. High-pressure water gun; 34. Chute; 4. Tailings re-pulping device; 41 , trommel screen; 42, mixing tank; 43, slurry pump; 44, sand inlet concentration meter; 45, sand inlet flowmeter; 5, filling slurry preparation device; 51, sand bin; 511, high-pressure water automatic clearing device; 52. Cement silo; 53. Screw weighing feeder; 531. Screw feeder; 5311. Frequency conversion motor; 5312. Feeding port; 5313. Rotating rod; 5314. Continuous impeller; 5322, feeding port; 54, mixer; 541, mixing tank; 542, mixing shaft; 543, mixing blade; 544, motor; 545, reducer; 546, auxiliary blade; 55, activation mixer; 551, mixing box; 552, stirring rod; 553, stirring rotor; 554, drive motor; 555, rotor disc; 556, rotor rod; 56, sand concentration meter; 57, sand flow meter; 6, material level meter.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Fig. 1 is a schematic diagram of a transport vehicle transporting a high-concentration tailings filter cake to a filter cake storage bin for storage in a preferred embodiment of the utility model; Fig. 2 is a schematic diagram of a filter cake storage bin and a tailings re-pulping device in a preferred embodiment of the utility model High-concentration tailings filter cake forms a schematic diagram of tailings; Fig. 3 is a schematic diagram of the filling slurry preparation device of a preferred embodiment of the present invention preparing tailings into filling slurry; Fig. 4 is a spiral scale of a preferred embodiment of the present invention The schematic diagram of the heavy feeder; Fig. 5 is the schematic diagram of the screw feeder of the preferred embodiment of the utility model; Fig. 6 is one of the schematic diagrams of the mixer of the preferred embodiment of the utility model; Fig. 7 is the schematic diagram of the preferred embodiment of the utility model The second schematic diagram of the agitator; Fig. 8 is the third schematic diagram of the agitator of the preferred embodiment of the utility model; Fig. 9 is one of the schematic diagrams of the activated agitator of the preferred embodiment of the utility model; Fig. 10 is the activation of the preferred embodiment of the utility model The second schematic diagram of the mixer.

As shown in Fig. 1, Fig. 2 and Fig. 3, the tailings remanufacturing filling system of this embodiment includes a transport vehicle 2 for transporting the high-concentration tailings filter cake 1 produced by the concentrator and formed by pressure filtration to the filling station 1. A filter cake storage bin 3 for centrally storing high-concentration tailings filter cake 1 and impacting and diluting high-concentration tailings filter cake 1 by high-pressure water to form tailings slurry flow output; Filtration and stirring of the mortar to obtain the tailing sand re-slurry device 4 with a stable concentration of tailings mortar and the preparation of the tailings mortar with a stable concentration output from the tailings re-slurry device 4 to form filling slurry and output for gob filling Slurry preparation device 5. The tailings remanufacturing filling system provided by the utility model includes a conveying vehicle 2 , a filter cake storage bin 3 , a tailings remanufacturing device 4 and a filling slurry preparation device 5 . The transport vehicle 2 can transport the high-concentration tailings filter cake 1 formed by pressure filtration in the concentrator and the high-concentration tailings filter cake 1 purchased from other concentrators to the filling station that needs to be filled with the tailings source, which can meet the filling requirements of the filling station. Demand for tailings sand sources. Using the transport vehicle 2 to transport the high-concentration tailings filter cake 1 can be transported to a longer distance, with less transport restrictions, and is more economical than other transport methods. The filter cake storage bin 3 can centrally store the high-concentration tailings filter cake 1 transported by the transport vehicle 2 to ensure that the tailings are available when the source of tailings is less, and can save the output of the high-concentration tailings filter cake 1 The addition amount is controlled, and then the proportion and concentration of the filling slurry are controlled to ensure the filling quality and filling effect, and improve the strength of the filling body. The filter cake storage bin 3 breaks up the high-concentration tailings filter cake 1 through high-pressure water, and mixes and dilutes the tailings and water to obtain tailings slurry. The tailings re-slurry device 4 filters and stirs the tailings slurry output from the filter cake storage bin 3, removes coarse particles in the tailings slurry and mixes the tailings and water evenly to obtain a tailings slurry with a stable concentration. The filling slurry preparation device 5 can prepare the tailing mortar with a stable concentration into filling slurry, and the filling slurry provides filling material for goaf filling to ensure the smooth progress of goaf filling. The tailing sand remanufacturing filling system proposed by the utility model provides a feasible remanufacturing mode, and is applied in production, and has a wider scope of application and a wider area of application. Optionally, the delivery vehicle 2 is various types of automobiles, such as trucks, trailers, semi-trailers and the like.

As shown in Figures 1 and 2, in this embodiment, the bottom of the filter cake storage bin 3 is provided with a control valve 32 for controlling the opening and closing of the outlet 31 at the bottom of the filter cake storage bin 3 and for controlling the opened outlet. The high-concentration tailings filter cake 1 output by 31 is a high-pressure water gun 33 for impacting and diluting with high-pressure water. When the filter cake storage bin 3 stores the high-concentration tailings filter cake 1, the outlet 31 is in a closed state. When preparing the tailings mortar, the discharge port 31 is opened through the control valve 32, the high-concentration tailings filter cake 1 is output from the discharge port 31, the high-pressure water gun 33 is opened, the high-pressure water gun 33 sprays high-pressure water, and the high-concentration tailings filter cake 1 is Under the impact of high-pressure water, it is broken up and mixed with water to form tailing mortar. The high-pressure water gun 33 can supply water constantly, stably impact and dilute the high-concentration tailings filter cake 1 . Optionally, the control valve 32 is an electro-hydraulic gate. Optionally, a chute 34 is provided below the outlet 31 , through which the tailings slurry is transported to the trommel 41 of the tailings re-pulping device 4 . Optionally, the bottom of the filter cake storage bin 3 drops the high-concentration tailings filter cake 1 to the chute 34 by opening the hatch, and at the same time, the high-pressure water gun 33 outputs high-pressure water to the high-concentration tailings filter cake 1 in the chute 34 to The high-concentration tailings filter cake 1 is impacted to break up, and the broken up tailings and water are transported downstream along the chute 34 . Optionally, the high-pressure water gun 33 is installed on the hatch at the bottom of the filter cake storage bin 3, and the hatch is opened so that the high-concentration tailings filter cake 1 falls towards the discharge port 31, while the high-pressure water gun 33 faces the discharge port 31 The high-concentration tailings filter cake 1 in the direction is sprayed with high-pressure water to disperse the high-concentration tailings filter cake 1, and the dispersed tailings and water fall into the chute 34 and are transported downstream along the chute 34.

As shown in Figure 2, in this embodiment, the tailings re-slurry device 4 includes a drum connected to the output end of the filter cake storage bin 3 for filtering and removing the coarse particles in the tailings slurry output from the filter cake storage bin 3 Screen 41, connected to the output end of the trommel 41 for stirring the tailings mortar to obtain a stable concentration of tailings mortar and prevent the mixing tank 42 of tailings deposition, and connected to the output end of the mixing tank 42 for pumping the tailings mortar to the filling The slurry pump 43 of the slurry preparation device 5. High-concentration tailings filter cake 1 will inevitably be mixed with impurities, such as production garbage, stones, etc., during the process of filter press production and transport vehicles 2 transporting and unloading to the filter cake storage bin 3. If these impurities enter the filling process, it will be very easy Cause pipe blockage, form filling production accidents, and affect production. Therefore, the coarse particles, stones, etc. in the tailing mortar must be filtered out by the drum sieve 41 . The mixing tank 42 stirs the tailing mortar at high speed, so that the tailing sand in the tailing mortar is mixed evenly with water, and the tailing sand does not deposit during high-speed stirring, and tailing mortar with a stable concentration can be obtained. The concentration of the tailing mortar is generally about 40%. The concentration of the tailing mortar should not be too high. If it is too high, it will increase the difficulty of transportation and increase the investment in pumps and pipelines. The concentration of the tailing mortar should not be too low. If it is too low, the transportation efficiency will be low and uneconomical. The tailing slurry with a stable concentration can be pumped to the filling slurry preparation device 5 by the slurry pump 43 for filling slurry preparation.

As shown in Figure 3, in this embodiment, the filling slurry preparation device 5 includes a sand bin 51 connected to the output end of the slurry pump 43 for settling dehydration and compressed air slurry making, a cement bin 52 for storing cement, a communication The output end of the cement silo 52 is used to measure and control the cement output by the cement silo 52 and carry out the screw weighing feeder 53 for cement delivery, which is respectively connected to the output end of the sand silo 51 and the output end of the screw weighing feeder 53 Agitator 54 for receiving quantitative tailing mortar and quantitative cement at the same time and initially stirring and mixing tailing mortar and cement to obtain filling slurry, and an activation mixer connected to the output end of mixer 54 for activating and stirring the filling slurry 55. The concentration of the tailing mortar output by the mixing tank 42 is generally about 40%, which does not meet the filling concentration requirement, and a sand bin 51 must be installed for sand storage and dehydration to further increase the concentration. The tailing mortar is naturally settled in the sand chamber 51, and the clear water on the surface is discharged to increase the concentration of the tailing mortar. Then the compressed gas produced by the air compressor is passed into the tailing mortar and stirred, so that the tailing mortar is evenly mixed. The cement output from the cement silo 52 is transported to the mixer 54 by the screw weighing feeder 53 according to a predetermined ratio, and is stirred and mixed with the tailing mortar output from the sand silo 51 in the mixer 54 to obtain a filling slurry, which is then activated by the mixer 55. The filling slurry is activated and stirred to obtain a homogeneous filling slurry.

As shown in FIG. 4 and FIG. 5 , in this embodiment, the screw weighing feeder 53 includes a screw feeder 531 for conveying cement and controlling the conveying speed, and a screw scale 532 for weighing the conveyed cement. The screw scale 532 is provided with a sensor 5321 for measuring the weight change of the cement on the screw scale 532, and the screw feeder 531 is provided with a variable frequency motor 5311 for controlling the operating frequency of the screw feeder 531 according to the measurement change of the sensor 5321. The frequency conversion motor 5311 of the screw feeder 531 drives the rotating rod 5313 and the continuous impeller 5314 attached to the rotating rod 5313 to rotate, thereby pushing the cement forward, and the cement is fed through the feeding port 5312 of the screw feeder 531 and the screw scale 532 Port 5322 enters in screw scale 532 and continues to convey. The sensor 5321 on the screw scale 532 can sense the weight change of the cement conveyed on the screw scale 532, so as to accurately measure the cement weight. According to the measurement change of the sensor 5321, by changing the frequency of the variable frequency motor 5311 and adjusting the rotating speed of the continuous impeller 5314, the amount of cement feeding can be increased or decreased. The feeding port 5312 of the screw feeder 531 and the feeding port 5322 of the screw scale 532 adopt flexible connection to ensure that the sensor 5321 on the screw scale 532 is not affected by external force, thereby ensuring accurate weighing. Optionally, the screw feeder 531 adopts double-pipe double-helix, and the double-pipe is independent of each other, which has better sealing performance than single-pipe double-helix, and will not cause ash to escape. Optionally, the screw feeder 531 adopts dual motors, the single motor works when the feeding amount is small, and the dual motors work when the feeding amount is large.

As shown in Fig. 6, Fig. 7 and Fig. 8, in the present embodiment, the mixer 54 includes a stirring tank 541, a stirring shaft 542 passing through the stirring tank 541, and a stirring blade 543 arranged on the stirring shaft 542 for stirring tailing mortar and cement , a motor 544 for driving the stirring blade 543 to rotate, and a speed reducer 545 arranged between the motor 544 and the stirring shaft 542 for speed matching between the motor 544 and the stirring shaft 542 . A plurality of auxiliary blades 546 are also provided on the stirring shaft 542 , and the directions of adjacent auxiliary blades 546 are opposite. The motor 544 drives the stirring shaft 542 and the stirring blade 543 attached to the stirring shaft 542 to rotate, thereby stirring and mixing the tailing mortar and cement in the stirring tank 541 to obtain filling slurry. The speed reducer 545 can reduce the rotation speed output by the motor 544 to the required rotation speed of the stirring shaft 542 to ensure the smooth operation of the stirring machine 54 . The stirring blades 543 and the auxiliary blades 546 facing oppositely act together to realize swirling stirring, and the stirring effect is better.

As shown in Figures 9 and 10, in this embodiment, the activation mixer 55 includes a stirring box 551, a stirring rod 552 passing through the stirring box 551, a stirring rotor 553 arranged on the stirring rod 552 for activating and stirring the filling slurry, and The stirring rod 552 is connected with a driving motor 554 for driving the stirring rotor 553 to rotate. The stirring rotor 553 includes a rotor disk 555 connected to the stirring rod 552 and a rotor rod 556 arranged on the rotor disk 555 and axially parallel to the stirring rod 552 . The driving motor 554 drives the stirring rod 552 and the stirring rotor 553 attached to the stirring rod 552 to rotate, so that the inner and outer rotor rods 556 on the rotor disk 555 rotate at a high speed in the mixing box 551 to break up the cement flocs and allow the filling slurry to The cement in the medium and the tailing mortar are more fully and uniformly mixed to form a homogeneous filling slurry.

As shown in FIG. 3 , in this embodiment, there are two sand bins 51 , and the two sand bins 51 alternately feed and discharge sand. The repulping process is separate from the filling process. The two sand bins 51 alternately feed sand and fill, that is, when one of the sand bins 51 is performing filling operations, the other sand bin 51 is used for sand feeding and settlement dehydration. The operating efficiency of slurry and filling.

As shown in Figures 2 and 3, in this embodiment, a sand inlet concentration meter 44 for detecting the inlet sand concentration and a sand inlet flow meter 45 for detecting the sand inlet flow rate are provided between the slurry pump 43 and the sand bin 51 and/or between the sand bin 51 and the mixer 54, a sand concentration meter 56 for detecting the sand concentration and a sand flow meter 57 for detecting the sand flow rate are provided. Concentration meter and flow meter can effectively detect the concentration and flow rate of sand feeding and sand discharge, and feed back the detection results to the control room, so as to adjust sand feeding and sand discharge according to the detection results to ensure smooth re-pulping and filling conduct.

As shown in FIG. 2 and FIG. 3 , in this embodiment, the mixing tank 42 and/or the sand bin 51 is provided with a level gauge 6 for detecting the liquid level. The level gauge 6 can detect in real time the liquid level of the mixing tank 42 and/or the sand bin 51. When the liquid level is low, the material can be properly fed, and when the liquid level is high, it needs to be discharged in time to prevent overflow.

As shown in FIG. 3 , in this embodiment, the sand bin 51 is provided with a high-pressure water automatic cleaning device 511 for cleaning the sand bin 51 . The high-pressure water automatic cleaning device 511 can spray high-pressure water to clean the inner wall of the sand bin 51 to prevent tailings from adhering and depositing on the inner wall.

The tailings re-slurry filling process implemented by the above-mentioned tailings re-slurry filling system includes the following steps: a. The tailings discharged from the mineral processing plant are press-filtered to form a high-concentration tailings filter cake 1, and the high-concentration tailings filter cake 1 Transport to the filling station for centralized storage; b. Shock and dilute the high-concentration tailings filter cake 1 with high-pressure water to obtain tailings mortar; c. Filter and remove the coarse particles in the tailings mortar; d. Stir the tailings mortar to prevent Tailings are deposited and tailings mortar with a stable concentration is obtained; e. Quantitative tailings mortar is mixed with a certain amount of cement to prepare filling slurry; f. Filling slurry is transported to the goaf for filling.

Step e specifically includes: sedimentation and dehydration; compressed air to make slurry; adding cement and water according to the predetermined lime-sand ratio and concentration; preliminary stirring; activation stirring.

During specific implementation, a tailings remanufactured slurry filling system is provided, which mainly includes four parts: a vehicle, a filter cake storage bin 3 , a tailings remanufactured device 4 and a filling slurry preparation device 5 .

The main equipment and technical parameters of the tailings remanufactured slurry filling system are shown in Table 1.

Table 1: Main Equipment Technical Parameters of Tailings Reprocessing Slurry Filling System

The screw weighing feeder 53, the agitator 54 and the activation agitator 55 will be further described in detail below.

The screw weighing feeder 53 is composed of a screw feeder 531 and a screw scale 532. The screw feeder 531 and the screw scale 532 are connected softly. The speed of the screw feeder 531 is adjustable, and the speed of the screw scale 532 is constant. The signal adjusts the screw feeder 531 to achieve control accuracy.

The main technical indicators of the screw weighing feeder 53 are as follows:

a. System static measurement error ≤ 0.25%;

b. System dynamic measurement error ≤ 1%;

c. System control error ≤ 1%;

d. Feed rate 0t/h～50t/h;

e. Speed regulation range: 1:10;

f. It can be equipped with an AC frequency conversion speed regulation system to control the speed of the screw feeder 531.

The main function and purpose of the mixer 54 are: the tailing mortar, cement and water enter the mixer 54 through their respective supply lines according to the set lime-sand ratio, concentration and flow rate, so as to realize the preliminary mixing and stirring of the cement and tailings mortar, and prepare them into concentrations and Lime-sand ratio meets the requirements of filling slurry.

Blender 54 has the following features:

1. Driven by motor 544 and reducer 545, the structure is simple and reliable, and the operation and maintenance are convenient.

2. Adopt forced whirling stirring and feeding process, the stirring effect is remarkable.

3. The mixing blade 543 is made of high-quality steel, which has good wear resistance and long service life.

4. The stirring blade 543 can be replaced separately, and the maintenance is fast and convenient.

5. The sealing between the stirring shaft 542 and the stirring tank 541 adopts a double seal of a labyrinth seal and a sealing ring, and the sealing effect is good.

6. The mixing slurry has high concentration, large capacity and continuous feeding.

The activation mixer 55 is composed of a driving motor 554, a stirring box 551, a stirring rotor 553, a machine base and the like. After the initial stirring and mixing by the mixer 54, the filling slurry with a certain flow rate, concentration and lime-sand ratio enters the activation mixer 55, and the activation mixer 55 performs secondary activation and stirring on the filling slurry. The rotor rod 556 of the inner and outer circles of the activation mixer 55 rotates at high speed to break up the agglomerated cement agglomerates, so that the cement is evenly distributed in the filling slurry, which not only increases the consistency and transportability of the filling slurry, but also makes the filling slurry enter the gob. The strength of each part of the filling body increases consistently, and the integrity of the filling body is better.

Activation Mixer 55 has the following features:

1. Directly driven by the drive motor 554, the structure is simple and reliable, and the operation and maintenance are convenient.

2. The driving motor 554 can be an ordinary motor or a variable frequency speed regulating motor according to the usage requirements. It adopts frequency conversion speed regulating motor, which has the characteristics of large driving torque, wide speed regulating range and high control precision. It can maintain constant driving torque when running at low speed, and has constant stirring power when running at high speed. It can be adjusted by adjusting the speed of frequency conversion speed regulating motor. stirring strength.

3. The rotor disk 555 and the rotor rod 556 are made of high-quality wear-resistant steel, which is processed by special technology, which has good wear resistance and long service life.

4. The rotor disk 555 adopts a split structure, and the rotor rod 556 can be replaced separately, which is convenient and fast for replacement and maintenance.

5. The sealing between the stirring rod 552 and the stirring box 551 is sealed by a sealing ring, and the sealing effect is good.

6. The mixing slurry has high concentration, large capacity and continuous feeding.

The tailings re-slurry filling process implemented by the above-mentioned tailings re-slurry filling system includes the following steps:

Transport the high-concentration tailings filter cake 1 with a concentration of 85% to 90% to the filter cake storage bin 3 by car, open the electro-hydraulic gate, and turn on the high-pressure water gun 33. After the high-concentration tailings filter cake 1 is impacted by high-pressure water and Under the action of dilution, the chute 34 enters the trommel 41, and the coarse particles, stones, etc. are filtered out, and the tailing mortar enters the mixing tank 42 for stirring. The stirred tailing mortar has a concentration of about 40%, and is pumped to After the sand bin 51 is settled and dehydrated, air is compressed to make slurry and release sand, cement and additional water are added according to a certain lime-sand ratio and concentration, and the filling slurry is stirred in two stages and then flowed or pumped to the underground goaf for filling.

The advantages of the tailings remanufacturing slurry filling system of the present invention are as follows:

1) A feasible repulping mode is provided and applied in production.

2) The repulping process provides a qualified tailings sand source for the filling process.

3) High-concentration tailings filter cakes 1 of various finenesses are suitable for tailings re-slurry filling process. In the case of multiple sources of high-concentration tailings filter cake 1, there must be large differences in the particle size of tailings from various sources; for example, some high-concentration tailings filter cakes 1 are classified coarse tailings, and some are fine tailings , Coarse tailings and fine tailings can be transported to the same sand bin 51 according to a certain ratio, so that the composition of the tailings in the sand bin 51 is more uniform, which is more conducive to slurry transportation and the formation of filling body strength.

4) The whole process of the tailings re-slurry filling process is automatically controlled, the concentration and flow rate of the incoming sand can be effectively detected and fed back to the control room, and the liquid level of the sand bin 51 can be detected and fed back in real time. During the filling process, the sand concentration, sand flow rate, and cement feeding amount can be detected, fed back and corrected in real time according to the design value.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. A filling system for tailings remanufactured slurry, characterized in that, It includes a transport vehicle (2) for transporting the high-concentration tailings filter cake (1) produced by the concentrator and formed by pressure filtration to the filling station, and is used to centrally store the high-concentration tailings filter cake (1) and pass high-pressure Water impacts and dilutes the high-concentration tailings filter cake (1) to form a filter cake storage bin (3) for the flow output of tailings mortar, and is used to filter and stir the tailings slurry output from the filter cake storage bin (3) Tailings re-slurry device (4) for obtaining tailings mortar with a stable concentration and preparing tailings slurry with a stable concentration output by the tailings re-slurry device (4) to form filling slurry and output for goaf filling Filling slurry preparation device (5). 2. The tailings remanufactured slurry filling system according to claim 1, characterized in that, The bottom of the filter cake storage bin (3) is provided with a control valve (32) for controlling the opening and closing of the outlet (31) at the bottom of the filter cake storage bin (3) and for controlling the opening of the outlet after opening. (31) A high-pressure water gun (33) for impacting and diluting the output high-concentration tailings filter cake (1) with high-pressure water. 3. The tailings remanufactured slurry filling system according to claim 2, characterized in that, The tailings re-slurry device (4) includes a filter connected to the output end of the filter cake storage bin (3) for filtering and removing coarse particles in the tailings slurry output from the filter cake storage bin (3). Trommel screen (41), be connected at the output end of described trommel screen (41) and be used for agitating tailings mortar to obtain the tailings mortar of stable concentration and prevent the mixing tank (42) of tailing sand deposition and be connected in described mixing tank (42 ) is used to pump the tailing slurry to the slurry pump (43) of the filling slurry preparation device (5). 4. tailings sand remanufactured slurry filling system according to claim 3, is characterized in that, The filling slurry preparation device (5) includes a sand bin (51) connected to the output end of the slurry pump (43) for settling dehydration and compressed air slurry making, a cement bin (52) for storing cement, The output end of the cement silo (52) is connected to the screw weighing feeder (53) for measuring and controlling the cement output by the cement silo (52) and conveying the cement, respectively connected to the sand silo (51 ) and the output end of the screw weighing feeder (53) are used to simultaneously accept quantitative tailing mortar and quantitative cement and carry out preliminary mixing to tailing mortar and cement to obtain a mixer for filling slurry (54 ) and the activation agitator (55) connected to the output end of the agitator (54) for activating and agitating the filling slurry. 5. tailings sand remanufactured slurry filling system according to claim 4, is characterized in that, The screw weighing feeder (53) includes a screw feeder (531) for conveying cement and controlling the conveying speed and a screw scale (532) for measuring the conveyed cement; The screw scale (532) is provided with a sensor (5321) for sensing the weight change of the cement on the screw scale (532) for metering, and the screw feeder (531) is provided with a sensor (5321) for measuring according to the sensor (5321). ) the variable frequency motor (5311) of the operating frequency of the screw feeder (531) controlled by the variation of metering; The feeding port (5312) of the screw feeder (531) and the feeding port (5322) of the screw balance (532) adopt a flexible connection. 6. tailings sand remanufacturing slurry filling system according to claim 4, is characterized in that, The mixer (54) comprises a mixing tank (541), a mixing shaft (542) passing through the mixing tank (541), a mixing blade (543) arranged on the mixing shaft (542) for mixing tailing mortar and cement ), the motor (544) used to drive the rotation of the stirring blade (543) and the motor (544) and the stirring shaft arranged between the motor (544) and the stirring shaft (542) The speed reducer (545) that speed matches between (542); A plurality of auxiliary blades (546) are also provided on the stirring shaft (542), and the directions of adjacent auxiliary blades (546) are opposite. 7. tailings sand remanufacturing slurry filling system according to claim 4, is characterized in that, The activation mixer (55) comprises a stirring box (551), a stirring rod (552) passing through the stirring box (551), a stirring rotor ( 553) and a drive motor (554) connected to the stirring rod (552) for driving the stirring rotor (553) to rotate; The stirring rotor (553) includes a rotor disk (555) connected to the stirring rod (552) and a rotor rod (556) arranged on the rotor disk (555) parallel to the axial direction of the stirring rod (552). ). 8. The tailings remanufactured slurry filling system according to claim 4, characterized in that, Between the slurry pump (43) and the sand bin (51), a sand inlet concentration meter (44) for detecting the sand inlet concentration and a sand inlet flow meter (45) for detecting the sand inlet flow rate are provided; and /or A sand discharge concentration meter (56) for detecting the sand discharge concentration and a sand discharge flow meter (57) for detecting the sand discharge flow rate are provided between the sand bin (51) and the mixer (54). 9. The tailings remanufactured slurry filling system according to claim 4, characterized in that, The mixing tank (42) and/or the sand bin (51) is provided with a level gauge (6) for detecting the liquid level. 10. The tailings remanufacturing slurry filling system according to claim 4, characterized in that, The sand bin (51) is provided with a high-pressure water automatic cleaning device (511) for cleaning the sand bin (51).