阅读说明：本技术 用于膏体精准给料搅拌的集成监测系统及方法 (Integrated monitoring system and method for paste accurate feeding and stirring ) 是由 尹升华 王雷鸣 肖友鹏 吴爱祥 王少勇 陈勋 邵亚建 严荣富 侯永强 陈威 陈大 于 2020-06-28 设计创作，主要内容包括：本发明提供一种用于膏体精准给料搅拌的集成监测系统及方法,属于矿山充填技术领域。该系统包括驱动电机、干尾砂仓、储水仓、电控阀门、定量皮带式给料机、电磁流量计、尾砂拌合仓、搅拌浆杆、螺杆式搅拌桨叶、溢流口、砂浆泵、电磁换向阀、水力旋流器、入料口、卧式搅拌槽、液位传感器、入浆口、出浆口、黏度传感器、浓度传感器、计算机集控数据平台。该系统利用计算机集控数据平台,实现物料添加、料浆黏度、浓度和液位可控可测,为矿山膏体给料搅拌制备过程优化与监测提供良好借鉴。(The invention provides an integrated monitoring system and method for accurate feeding and stirring of paste, and belongs to the technical field of mine filling. The system comprises a driving motor, a dry tailings bin, a water storage bin, an electric control valve, a quantitative belt feeder, an electromagnetic flowmeter, a tailings mixing bin, a stirring rod, a screw type stirring paddle blade, an overflow port, a mortar pump, an electromagnetic directional valve, a hydrocyclone, a feeding port, a horizontal stirring tank, a liquid level sensor, a slurry inlet, a slurry outlet, a viscosity sensor, a concentration sensor and a computer centralized control data platform. The system utilizes a computer centralized control data platform to realize material addition, controllable and measurable slurry viscosity, concentration and liquid level, and provides a good reference for optimization and monitoring of the mine paste feeding and stirring preparation process.)

1. The utility model provides an integrated monitoring system that is used for accurate feed stirring of lotion which characterized in that: the system comprises a feeding mixing system, a cyclone classification system, a tailing stirring system and a data monitoring control system, wherein the feeding mixing system comprises a dry tailing bin (2), a water storage bin (3), a quantitative belt type feeder (5), a tailing mixing bin (7), a stirring rod (8), a screw type stirring paddle (9) and an overflow port (10), the cyclone classification system comprises a hydraulic cyclone (13) and a feeding port (14), the tailing stirring system comprises a horizontal stirring tank (15), a slurry inlet (17) and a slurry outlet (18), the data monitoring control system comprises a driving motor (1), an electric control valve (4), an electromagnetic flow meter (6), a mortar pump (11), an electromagnetic directional valve (12), a liquid level sensor (16), a viscosity sensor (19), a concentration sensor (20) and a computer centralized control data platform (21), the quantitative belt type feeder (5) is arranged at the lower part of the dry tailing bin (2), the quantitative belt feeder (5) feeds tailings into a tailing mixing bin (7), a water storage bin (3) feeds water to the tailing mixing bin (7), the underflow of the tailing mixing bin (7) is conveyed to a feeding port (14) of a hydrocyclone (13) through a mortar pump (11), the overflow of the tailing mixing bin (7) is conveyed to the water storage bin (3) through an overflow port (10), the underflow of the hydrocyclone (13) is conveyed to a slurry inlet (17) of a horizontal stirring tank (15), the overflow of the hydrocyclone (13) returns to the water storage bin (3) through the overflow port, and the whole system is controlled by a computer centralized control data platform (21); the top of the dry tailings sand bin (2), the top of the tailings mixing bin (7) and the side of the horizontal stirring tank (15) are respectively provided with a driving motor (1), the driving motors (1) are connected with the dry tailings sand bin (2), the tailings mixing bin (7) and a stirring paddle rod (8) arranged in the horizontal stirring tank (15), the stirring paddle rod (8) is provided with a screw type stirring paddle (9), the bottoms of the dry tailings sand bin (2), the water storage bin (3), the tailings mixing bin (7) and the hydrocyclone (13) are respectively provided with an electric control valve (4), the lower part of the electric control valve (4) at the bottom of the dry tailings sand bin (2) is provided with a quantitative belt type feeder (5), the lower part of the electric control valve (4) at the bottom of the water storage bin (3) is provided with an electromagnetic flow meter (6), the upper parts of the tailings mixing bin (7) and the hydrocyclone (13) are respectively provided with an overflow port (10), the bottoms of the tailings mixing pump bin (7) and the hydrocyclone (13) are respectively provided with an overflow port (11), a viscosity sensor (19), a concentration sensor (20) and a liquid level sensor (16) are arranged in the horizontal stirring tank (15), a slurry inlet (17) is arranged at the upper part of the horizontal stirring tank (15), and a slurry outlet (18) is arranged at the bottom.

2. The integrated monitoring system for accurate feeding and stirring of paste according to claim 1, characterized in that: an electromagnetic reversing valve (12) is arranged in front of a feeding port (14) of the hydrocyclone (13).

3. The integrated monitoring system for accurate feeding and stirring of paste according to claim 1, characterized in that: the quantitative belt feeder (5) is a belt type continuous quantitative feeding device based on mass weighing monitoring as an index.

4. The integrated monitoring system for accurate feeding and stirring of paste according to claim 1, characterized in that: the viscosity sensor (19) and the concentration sensor (20) are positioned below the tailing liquid level in the horizontal stirring tank (15).

5. The integrated monitoring system for accurate feeding and stirring of paste according to claim 1, characterized in that: the electric control valve (4), the mortar pump (11) and the electromagnetic directional valve (12) give power transmission signals to the material pump; the quantitative belt feeder (5) and the electromagnetic flowmeter (6) give out material quantity control electric signals; the liquid level sensor (16), the viscosity sensor (19) and the concentration sensor (20) respectively collect liquid level, viscosity and concentration signals; all kinds of electric signals are collected, processed and sent out by a computer centralized control data platform (21).

6. The method of applying the integrated monitoring system for accurate paste feeding and stirring of claim 1, wherein the method comprises the following steps: the method comprises the following steps:

s1: starting a computer centralized control data platform (21), injecting clear water into a water storage bin (3), setting an electromagnetic flow meter (6), starting an electric control valve (4), an electromagnetic directional valve (12) and a mortar pump (11), injecting the clear water into a tailing mixing bin (7), a hydrocyclone (13) and a horizontal stirring tank (15), adjusting a liquid level sensor (16), a viscosity sensor (19) and a concentration sensor (20), and adjusting a quantitative belt feeder (5);

s2: starting a driving motor (1) of a dry tailing bin (2), a tailing mixing bin (7) and a horizontal stirring tank (15), pouring dry tailing into the dry tailing bin (2), and injecting industrial water into a water storage bin (3);

s3: setting running conditions of a quantitative belt feeder (5) and an electromagnetic flowmeter (6) by using a computer centralized control data platform (21), starting an electric control valve (4), enabling dry tailings and water to enter a tailings mixing bin (7) through the quantitative belt feeder (5) and the electromagnetic flowmeter (6) respectively, and starting a driving motor (1) to mix materials;

s4: after the materials in the tailing mixing bin (7) are mixed, under the control of a computer centralized control data platform (21), an electric control valve (4) is opened, the materials are pumped to an electromagnetic reversing valve (12) through a mortar pump (11), and then the materials enter a hydrocyclone (13) through a feeding port (14);

S5: starting a hydraulic cyclone (13), wherein high-concentration tail mortar is positioned at the bottom of the hydraulic cyclone (13), after cyclone classification, opening an electric control valve (4) and a mortar pump (11) under the control of a computer centralized control data platform (21), feeding the tail mortar into a horizontal stirring tank (15) through a mortar inlet (17) under the control of an electromagnetic flowmeter (6), and returning overflow water to a water storage bin (3) through an overflow port (10);

s6: under the action of a stirring paddle rod (8) and a screw type stirring blade (9), tail mortar in a horizontal stirring tank (15) is continuously stirred, the liquid level height, viscosity and concentration parameters of the tail mortar are acquired in situ by using a liquid level sensor (16), a viscosity sensor (19) and a concentration sensor (20), and are processed and visualized by a computer centralized control data platform (21);

s7: monitoring the states of viscosity and concentration of the slurry by using a computer centralized control data platform (21), and if the concentration of the paste slurry is lower than 60 +/-2%, adjusting a quantitative belt feeder (5) to increase the addition of dry tailings, or adjusting an electromagnetic flowmeter (6) below a water storage bin (3) to reduce the addition of water; if the concentration of the paste slurry is higher than 90 +/-2%, reducing dry tailings or increasing the addition of water, and outputting the prepared target paste slurry through a slurry outlet (18);

s8: after the experiment is completed, the dry tailing bin (2) is emptied, the dry tailing is retained by the quantitative belt feeder (5), the electromagnetic flow meter (6) is adjusted under the water storage bin (3), the clear water flow is increased, the tailing mixing bin (7), the hydraulic cyclone (13) and the horizontal stirring tank (15) are cleaned, liquid parameters in the horizontal stirring tank (15) are monitored by the viscosity sensor (19) and the concentration sensor (20), and the system is closed until the cleaning is completed.

Technical Field

The invention relates to the technical field of mine filling, in particular to an integrated monitoring system and method for accurate feeding and stirring of paste.

Background

The paste filling technology is a green mining technology which mixes mine solids such as ore dressing tailings, waste rocks and waste residues with cement, flocculating agent, water and the like, forms paste structure flow through dense stirring, and finally fills the paste structure flow to underground or surface stockpiling. The method can effectively eliminate underground goaf and surface tailing pond, realize 'one waste and two harm' treatment, eliminate the predicament of ecological destruction and environmental pollution, and improve the mining efficiency and operation safety of the mine. The efficient preparation of the paste filling slurry is a key link of a paste filling technology. Whether the feeding and stirring process of the paste can be measured, controlled and adjusted or not can be realized, and whether the accurate integrated control of the whole process can be realized is a core problem that the preparation efficiency and the preparation effect of the paste are restricted.

Currently, methods for monitoring and controlling paste feeding and stirring processes mainly include the following three types: 1) and carrying out non-timing sampling detection on the tailing slurry. Sampling paste slurry by arranging observation sampling ports and other modes on devices such as a tailing mixing bin, a horizontal stirrer and the like, and researching the properties of paste materials by indoor slump experiments, rheological experiments and other modes to obtain key physical and chemical characteristic parameters such as viscosity and concentration of the slurry; 2) visualization and image processing techniques are utilized. The method comprises the following steps of (1) photographing tailings slurry in a horizontal stirring tank and other devices by erecting an image acquisition device such as a high-speed camera, processing the photograph by using an image processing technology to obtain a two-dimensional pore gray level image of the tailings slurry, and judging by referring to a standard threshold; 3) and installing a monitoring instrument and a sensor. By installing external instruments such as a nested concentration meter and a pressure meter inside or outside a stirring tank and the like, the tailing slurry instrument is effectively monitored by utilizing the monitoring instrument, and the paste slurry preparation process is adjusted in a manual regulation mode or a computer-like mode.

The above method mainly has four problems: 1) the in-situ sampling detection experiment process is complex, the time is long, the sampling is random, the experiment detection result is remarkably lagged, and the test result cannot form reference for real-time adjustment; 2) the image processing technology is the judgment of macro scale, usually only can be based on the surface morphology of the stirring slurry for identification, is very easy to be interfered by the quality of a photo and an image processing method, and has lower accuracy; 3) the monitoring and disposal cost is high, experimental consumables such as the high-speed camera and the paddle rheometer need a large amount of capital investment, and the poor stability and the high maintenance cost of the device are caused by the severe dusty operating environment; 4) data acquisition is decentralized, and the integration degree is lower. In the past, a monitoring instrument is adopted to generally fracture the monitoring of the tailing slurry state, multiple processes such as feeding, stirring and the like cannot cooperate, the regulation and control means cannot be practical and effective, the monitoring data extracted in the feeding and stirring process is delayed, the accuracy is low, the operation is generally dependent on personnel, and the real-time reference is difficult to provide for the tailing slurry quality regulation. In conclusion, the existing paste feeding and stirring monitoring system and method make remarkable progress, but still have the outstanding problems of monitoring lag, low visualization degree, poor data integration, long feedback line path and the like, and the integrated monitoring system and method for accurate feeding and stirring of the paste is lacked.

Disclosure of Invention

The invention provides an integrated monitoring system and method for accurate feeding and stirring of paste, and aims to provide an effective method for monitoring and controlling key parameters such as material ratio, slurry viscosity, slurry concentration, slurry liquid level height and the like in a feeding process and a stirring process in real time by using a quantitative belt feeder, an electromagnetic flowmeter, a liquid level sensor, a viscosity sensor, a concentration sensor and the like, so as to finally obtain ideal paste filling slurry, and finally provide important reference for accurate preparation and monitoring of mine paste slurry.

The system comprises a feeding mixing system, a rotational flow grading system, a tailing stirring system and a data monitoring control system, wherein the feeding mixing system comprises a dry tailing bin, a water storage bin, a quantitative belt type feeding machine, a tailing mixing bin, a stirring rod, a screw type stirring blade and an overflow port, the rotational flow grading system comprises a hydrocyclone and a feeding port, the tailing stirring system comprises a horizontal stirring tank, a slurry inlet and a slurry outlet, the data monitoring control system comprises a driving motor, an electric control valve, an electromagnetic flow meter, a mortar pump, an electromagnetic reversing valve, a liquid level sensor, a viscosity sensor, a concentration sensor and a computer centralized control data platform, the quantitative belt type feeding machine is arranged at the lower part of the dry tailing bin, the quantitative belt type feeding machine feeds tailing into the tailing mixing bin, the water storage bin feeds water to the tailing mixing bin, the bottom of the tailing mixing bin flows through the mortar pump and is conveyed to the feeding port of the hydrocyclone, the overflow of the tailing mixing bin is conveyed to the water storage bin through an overflow port, the underflow of the hydrocyclone is conveyed to a slurry inlet of the horizontal stirring tank, the overflow of the hydrocyclone returns to the water storage bin through the overflow port, and the whole system is controlled by a computer centralized control data platform; driving motors are arranged on the top of the dry tailings bin, the top of the tailings mixing bin and the side face of the horizontal stirring tank, the driving motors are connected with stirring rods arranged in the dry tailings bin, the tailings mixing bin and the horizontal stirring tank, screw type stirring blades are arranged on the stirring rods, electric control valves are arranged at the bottoms of the dry tailings bin, the water storage bin, the tailings mixing bin and the hydraulic cyclone, a quantitative belt type feeding machine is arranged below the electric control valve at the bottom of the dry tailings bin, an electromagnetic flowmeter is arranged below the electric control valve at the bottom of the water storage bin, overflow ports are arranged at the upper parts of the tailings mixing bin and the hydraulic cyclone, mortar pumps are arranged at the bottoms of the tailings mixing bin and the hydraulic cyclone, a viscosity sensor, a concentration sensor and a liquid level sensor are arranged in the horizontal stirring tank, a mortar inlet is arranged at the upper part of the horizontal stirring tank, and a mortar outlet is arranged at the bottom of the horizontal stirring tank.

An electromagnetic reversing valve is arranged in front of a feeding port of the hydrocyclone.

The quantitative belt feeder is a belt type continuous quantitative feeding device based on mass weighing monitoring as an index.

The viscosity sensor and the concentration sensor are positioned below the tailing liquid level in the horizontal stirring tank.

The electric control valve, the mortar pump and the electromagnetic directional valve give out material pumping electric signals; the quantitative belt feeder and the electromagnetic flowmeter provide material quantity control electric signals; the liquid level sensor, the viscosity sensor and the concentration sensor respectively collect liquid level, viscosity and concentration signals; all kinds of electric signals are collected, processed and sent out by a computer centralized control data platform.

The method applying the invention comprises the following steps:

s1: starting a computer centralized control data platform, injecting clear water into a water storage bin, setting an electromagnetic flowmeter, starting an electric control valve, an electromagnetic directional valve and a mortar pump, injecting the clear water into a tailing mixing bin, a hydrocyclone and a horizontal stirring tank, adjusting a liquid level sensor, a viscosity sensor and a concentration sensor, and adjusting a quantitative belt feeder;

s2: starting driving motors of the dry tailing bin, the tailing mixing bin and the horizontal stirring tank, pouring dry tailing into the dry tailing bin, and injecting industrial water into the water storage bin;

S3: setting running conditions of a quantitative belt feeder and an electromagnetic flowmeter by using a computer centralized control data platform, starting an electric control valve, enabling dry tailings and water to enter a tailing mixing bin through the quantitative belt feeder and the electromagnetic flowmeter respectively, and starting a driving motor to mix materials;

s4: after the materials in the tailing mixing bin are mixed, under the control of a computer centralized control data platform, an electric control valve is opened, the materials are pumped to an electromagnetic reversing valve through a mortar pump, and then the materials enter a hydrocyclone through a feeding port;

s5: starting a hydrocyclone, wherein high-concentration tail mortar is positioned at the bottom of the hydrocyclone, after the hydrocyclone is classified, opening an electric control valve and a mortar pump under the control of a computer centralized control data platform, feeding the tail mortar into a horizontal stirring tank through a mortar inlet under the control of an electromagnetic flowmeter, and returning overflow water to a water storage bin through an overflow port;

s6: under the action of a stirring paddle rod and a screw type stirring paddle blade, tail mortar in the horizontal stirring tank is continuously stirred, physical and mechanical parameters such as the liquid level height, viscosity and concentration of the tail mortar are acquired in situ by using a liquid level sensor, a viscosity sensor and a concentration sensor, and are processed and visualized by a computer centralized control data platform;

S7: monitoring the states of viscosity and concentration of the slurry by using a computer centralized control data platform, and if the concentration is too low (generally, the concentration of the paste slurry is too low when the concentration is less than 60 +/-2%), adjusting a quantitative belt feeder to increase the addition of dry tailings, or adjusting an electromagnetic flowmeter below a water storage bin to reduce the addition of water; if the concentration is too high (generally, the concentration is higher than 90 +/-2 percent, namely the concentration of the paste slurry is too high), reducing dry tailings or increasing the addition amount of water, and outputting the prepared target paste slurry through a slurry outlet;

s8: after the experiment is completed, the dry tailing bin is emptied, the dry tailing is retained by the quantitative belt feeder, the electromagnetic flow meter below the water storage bin is adjusted, the clear water flow is increased, the tailing mixing bin, the hydrocyclone and the horizontal stirring tank are cleaned, the liquid parameters in the horizontal stirring tank are monitored by the viscosity sensor and the concentration sensor, and the system is closed until the cleaning is completed.

The technical scheme of the invention has the following beneficial effects:

in the scheme, the system relies on a computer centralized control data platform, and utilizes parameter monitoring and control devices such as a viscosity sensor, a concentration sensor, a liquid level sensor, an electromagnetic flow meter and a quantitative belt feeder to realize full-flow visualization of material addition, slurry viscosity, slurry concentration and slurry liquid level, so that accurate feeding and stirring of a paste preparation process are achieved, and the system has the outstanding advantages of controllable and adjustable key parameters, low equipment cost and the like, and provides a good reference for optimization and monitoring of a mine paste feeding and stirring preparation process.

Drawings

FIG. 1 is a schematic diagram of the system of the present invention.

Wherein: 1-driving motor, 2-dry tailings bin, 3-water storage bin, 4-electric control valve, 5-quantitative belt feeder, 6-electromagnetic flowmeter, 7-tailings mixing bin, 8-stirring rod, 9-screw stirring paddle, 10-overflow port, 11-mortar pump, 12-electromagnetic reversing valve, 13-hydrocyclone, 14-feeding port, 15-horizontal stirring tank, 16-liquid level sensor, 17-feeding port, 18-discharging port, 19-viscosity sensor, 20-concentration sensor and 21-computer centralized control data platform.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The invention provides an integrated monitoring system and method for accurate feeding and stirring of paste.

As shown in fig. 1, the system comprises a feeding mixing system, a cyclone classification system, a tailing stirring system and a data monitoring control system, wherein the feeding mixing system comprises a dry tailing bin 2, a water storage bin 3, a quantitative belt feeder 5, a tailing mixing bin 7, a stirring rod 8, a screw stirring paddle 9 and an overflow port 10, the cyclone classification system comprises a hydrocyclone 13 and a feeding port 14, the tailing stirring system comprises a horizontal stirring tank 15, a slurry inlet 17 and a slurry outlet 18, the data monitoring control system comprises a driving motor 1, an electric control valve 4, an electromagnetic flow meter 6, a mortar pump 11, an electromagnetic reversing valve 12, a liquid level sensor 16, a viscosity sensor 19, a concentration sensor 20 and a computer centralized control data platform 21, the quantitative belt feeder 5 is arranged at the lower part of the dry tailing bin 2, the quantitative belt feeder 5 feeds the tailing into the tailing mixing bin 7, the water storage bin 3 supplies water to a tailing mixing bin 7, the underflow of the tailing mixing bin 7 is conveyed to a feeding port 14 of a hydrocyclone 13 through a mortar pump 11, the overflow of the tailing mixing bin 7 is conveyed to the water storage bin 3 through an overflow port 10, the underflow of the hydrocyclone 13 is conveyed to a slurry inlet 17 of a horizontal stirring tank 15, the overflow of the hydrocyclone 13 returns to the water storage bin 3 through the overflow port, and the whole system is controlled by a computer centralized control data platform 21; a driving motor 1 is respectively arranged at the top of the dry tailing bin 2, the tailing mixing bin 7 and the side surface of the horizontal stirring tank 15, the driving motor 1 is connected with the dry tailing bin 2, the tailing mixing bin 7 and a stirring rod 8 arranged in the horizontal stirring tank 15, a screw type stirring paddle 9 is arranged on the stirring rod 8, electric control valves 4 are respectively arranged at the bottoms of the dry tailing bin 2, the water storage bin 3, the tailing mixing bin 7 and the hydrocyclone 13, a quantitative belt type feeder 5 is arranged below the electric control valve 4 at the bottom of the dry tailing bin 2, an electromagnetic flow meter 6 is arranged below the electric control valve 4 at the bottom of the water storage bin 3, overflow ports 10 are respectively arranged at the upper parts of the tailing mixing bin 7 and the hydrocyclone 13, mortar pumps 11 are respectively arranged at the bottoms of the tailing mixing bin 7 and the hydrocyclone 13, a viscosity sensor 19, a concentration sensor 20 and a liquid level sensor 16 are arranged in the horizontal stirring tank 15, a mortar inlet 17 is arranged at the upper part of the horizontal stirring tank 15, the bottom is provided with a slurry outlet 18.

An electromagnetic directional valve 12 is arranged in front of a feed inlet 14 of the hydrocyclone 13. The dry tailings in the dry tailing bin 2 enter a tailing mixing bin 7 under the control of an electric control valve 4 and a quantitative belt feeder 5; water in the water storage bin 3 enters a tailing mixing bin 7 under the control of an electric control valve 4 and an electromagnetic flow meter 6, and dry tailing and water are mixed in the tailing mixing bin 7 to obtain tailing slurry.

The overflow water generated by stirring in the tailing mixing bin 7 and the hydrocyclone 13 flows out of the overflow port 10 and is pumped back to the water storage bin 3 for reuse.

And pumping the tailing slurry discharged from the bottom of the tailing mixing bin 7 to an electromagnetic reversing valve 12 through a mortar pump 11, and adjusting the electromagnetic reversing valve 12 according to requirements to enable the tailing to enter a hydrocyclone 13.

A liquid level sensor 16 in the horizontal stirring tank 15 determines the current liquid level of the tailing slurry, and a viscosity sensor 19 and a concentration sensor 20 are both kept below the liquid level of the tailing, so that accurate measurement is ensured.

The electric control valve 4, the mortar pump 11 and the electromagnetic directional valve 12 give material pumping electric signals; the quantitative belt feeder 5 and the electromagnetic flowmeter 6 give out material quantity control electric signals; the liquid level sensor 16, the viscosity sensor 19 and the concentration sensor 20 respectively collect liquid level, viscosity and concentration electric signals; all kinds of electric signals are collected, processed and sent out by the computer centralized control data platform 21.

The constant belt feeder 5 is a belt type continuous constant feeding device based on mass weighing monitoring as an index.

The practical application process of the system is as follows:

s1: starting system test and debugging, starting a computer centralized control data platform 21, injecting clean water into a water storage bin 3, setting an electromagnetic flow meter 6, starting an electric control valve 4, an electromagnetic reversing valve 12 and a mortar pump 11, enabling the clean water to sequentially enter a tailing mixing bin 7, a hydrocyclone 13 and a horizontal stirring tank 15, and adjusting a liquid level sensor 16, a viscosity sensor 19 and a concentration sensor 20; the quantitative belt feeder 5 is adjusted and calibrated by using a certain amount of materials.

S2: starting a driving motor 1 of a dry tailing bin 2, a tailing mixing bin 7 and a horizontal stirring tank 15, and pouring dry tailing into the dry tailing bin 2 to continuously mix the dry tailing so as to avoid the consolidation of the tailing and the rake pressing; the industrial water is injected into the water storage bin 3.

S3: the dry tailings and water ratio is calculated according to the requirement, the running conditions of the quantitative belt feeder 5 and the electromagnetic flowmeter 6 are set and started under the control of the computer centralized control data platform 21, the electric control valve 4 is opened, tailings and water respectively enter the tailings mixing bin 7 through the quantitative belt feeder 5 and the electromagnetic flowmeter 6, and the materials are mixed under the action of the driving motor 1.

S4: after the mixing of the materials in the tailing mixing bin 7 is completed, the electric control valve 4 is opened under the control of the computer centralized control data platform 21, the materials are pumped to the electromagnetic reversing valve 12 through the mortar pump 11, and then the materials enter the hydrocyclone 13 through the feeding port 14.

S5: and carrying out cyclone classification on the tailings, wherein high-concentration tailing slurry is positioned at the bottom of the hydrocyclone 13, after cyclone classification, opening the electric control valve 4 and the slurry pump 11 under the control of a computer centralized control data platform 21, controlling the addition amount of the tailing slurry by using an electromagnetic flowmeter 6, so that the tailing slurry enters the horizontal stirring tank 15 through the slurry inlet 17, and overflow water flows back to the water storage bin 3 through the overflow port 10.

S6: the tail mortar in the horizontal stirring tank 15 is stirred under the driving of the stirring paddle rod 8 and the screw type stirring paddle blade 9, physical mechanical parameters such as the liquid level height, viscosity and concentration of the tail mortar are collected by the liquid level sensor 16, the viscosity sensor 19 and the concentration sensor 20, and the tail mortar is processed by the computer centralized control data platform 21 in a unified mode and real-time visualization of data is achieved.

S7: monitoring whether the target viscosity and concentration state is achieved or not by using a computer centralized control data platform 21, and if the concentration is too low (generally lower than 60 +/-2%), adjusting a quantitative belt feeder 5 to increase the addition of dry tailings, or adjusting an electromagnetic flowmeter 6 below a water storage bin 3 to reduce the addition of water; if the concentration is too high (generally higher than 90. + -. 2%), the amount of dry tailings is reduced or the amount of water is increased.

S8: the tail mortar is finally prepared to complete the target paste slurry, and the target paste slurry is output through a slurry outlet 18; overflow water is generated in the stirring process of the tailing mixing bin 7 and the hydrocyclone 13 and is pumped back to the water storage bin 3 through the overflow port 10 to form closed cycle.

S9: after paste slurry is prepared, emptying the dry tailing bin 2, closing an electric control valve 4 below the dry tailing bin 2 in sequence, emptying a quantitative belt feeder 5 to retain dry tailings, adjusting an electromagnetic flow meter 6 below a water storage bin 3, increasing clear water flow, cleaning the tailing mixing bin 7, the hydrocyclone 13 and the horizontal stirring tank 15 in sequence, monitoring liquid parameters in the horizontal stirring tank 15 by using a viscosity sensor 19 and a concentration sensor 20, comparing standard reference values, and closing each driving and monitoring device after cleaning is confirmed.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.