CN114813464A - High-concentration tailing slurry deep solid-liquid separation simulation experiment device - Google Patents
High-concentration tailing slurry deep solid-liquid separation simulation experiment device Download PDFInfo
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Abstract
The invention provides a high-concentration tailing slurry deep solid-liquid separation simulation experiment device, and belongs to the technical field of mine tailing filling. The device includes ground paste dewatering cup, compression dewatering system, shearing dewatering system, data acquisition system, and compression dewatering system includes draw-in groove weight, bearing disc, and shearing dewatering system includes dehydration net, transmission shaft, gear motor, and data acquisition system includes torque sensor, pressure sensor. A compression dewatering system is arranged above the inside of the slurry dewatering cup, a shearing dewatering system is arranged below the compression dewatering system, a pressure sensor is arranged at the bottom of the slurry dewatering cup, and a torque sensor is arranged at a rotating shaft of a speed reduction motor of the shearing dewatering system. The simulation experiment device for the deep solid-liquid separation of the high-concentration tailing slurry, provided by the invention, is simple in structure and simple and convenient to operate, is suitable for series researches on the deep solid-liquid separation of the high-concentration tailing slurry, and can be used for researching the deep solid-liquid separation rule of the high-concentration tailing slurry under the conditions of pressure and different shearing forces.
Description
Technical Field
The invention relates to the technical field of mine tailing filling, in particular to a high-concentration tailing slurry deep solid-liquid separation simulation experiment device.
Background
A large amount of tailings are generated in the process of metal mine mining, and when the tailings are discharged in a large amount in an earth surface tailing pond, the problems of wide occupied area, heavy pollution, large potential safety hazard and the like exist. And the tailing paste filling and paste stacking are adopted by a plurality of metal mines at home and abroad due to the characteristics of safety, high efficiency, energy conservation, environmental protection and the like. The efficient flocculation of the tailings and the deep solid-liquid separation of the high-concentration tailings slurry are the core links and key technologies of the paste filling technology. In the actual production process on site, the bottom mud layer pressure of the paste thickener can reach 300kPa to the maximum, the pressure of a common indoor graduated cylinder settlement experiment and a common small-sized thickener model experiment generally cannot exceed 1kPa, and the huge compressive yield stress in the thickener in the actual production process cannot be accurately simulated. The study on the mud layer pressure of the paste thickener is mostly carried out under a static condition, and the shearing action of the rake frame is ignored. Therefore, the invention discloses a high-concentration tailing slurry deep solid-liquid separation simulation experiment device considering the shearing action of the rake frame and the pressure action of the mud layer, which is particularly important, so that the research on the deep solid-liquid separation behavior of the tailing slurry in the full pressure range of the paste thickener under different shearing conditions is realized.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-concentration tailing slurry deep solid-liquid separation simulation experiment device.
The device comprises a slurry dewatering cup, a compression dewatering system, a shearing dewatering system and a data acquisition system;
the compression dehydration system comprises a clamping groove weight and a bearing disc, the shearing dehydration system comprises a dehydration net, a transmission shaft and a speed reduction motor, and the data acquisition system comprises a torque sensor and a pressure sensor;
the slurry dewatering cup is arranged on the support, a compression dewatering system is arranged above the inside of the slurry dewatering cup, a shearing dewatering system is arranged below the compression dewatering system, a pressure sensor is arranged at the bottom in the slurry dewatering cup, and a torque sensor is arranged at the rotating shaft of the speed reduction motor.
Wherein, the central preformed hole of bearing disc, this preformed hole is passed to the transmission shaft, and gear motor is connected on transmission shaft upper portion, and transmission shaft sub-unit connection dehydration net, bearing disc center top set up the draw-in groove weight, and the draw-in groove weight centre bore is passed to the transmission shaft.
The diameter of the slurry dewatering cup is 5-7cm, the height is 16-20cm, and the volume is 400-600 ml.
The dewatering net is placed in the slurry dewatering cup, the dewatering net is welded on the transmission shaft through three beams and four water guide rods, and the interval between the dewatering net and the bottom of the slurry dewatering cup is 1-2 cm.
The rotating speed of the speed reducing motor is 0.5-5rpm, and the torque sensor and the speed reducing motor are connected together and are arranged at the top end of the bracket.
The weight of the clamping groove weight is 1kg-10kg, and the clamping groove of the clamping groove weight is arranged on the bearing disc in a manner of buckling the transmission shaft.
The thickness of the bearing disc is 3-5cm, the bearing disc sequentially comprises a sealing layer, a water absorbing layer and a water permeable layer from top to bottom, the thickness of the sealing layer and the water permeable layer is 0.5-1cm, the thickness of the water absorbing layer is 2-3cm, an O-shaped rubber sealing ring is arranged on the periphery of the sealing layer, a rotary water sealing ring is arranged at a central reserved hole of the sealing layer, and the water absorbing layer is arranged between the sealing layer and the water permeable layer. During installation, the bearing disc is horizontally placed in the slurry dewatering cup, the transmission shaft penetrates through the bearing disc, the bearing disc and the slurry dewatering cup form a piston disc structure, the slurry dewatering cup serves as a cylinder body of the piston disc, and the bearing disc can move up and down along the transmission shaft according to experimental requirements or under the action of gravity of the clamping groove weights.
The permeable layer is uniformly provided with permeable holes for water to pass through; the water absorbing layer consists of filter paper and sponge.
The experimental device is applied as follows:
s1: taking 400-500ml of flocculated and settled high-concentration tailing slurry, placing the slurry in a slurry dewatering cup, and opening a torque sensor and a pressure sensor, wherein the slurry should submerge 3-5cm above the top end of a dewatering net;
s2: arranging a new dry water absorption layer in a bearing disc, placing 1kg-10kg of clamping groove weights on the bearing disc, turning on a speed reducing motor, adjusting the rotating speed to 0.5-5rpm, and dehydrating for 10min-30 min;
s3: closing the speed reducing motor, the torque sensor and the pressure sensor, taking down the weight of the clamping groove and the bearing disc, and taking out the concentrated tailing slurry from the slurry dewatering cup to perform concentration test and rheological property test;
s4: a slurry cleaning dehydration cup, a dehydration net and a bearing disc.
The technical scheme of the invention has the following beneficial effects:
in the above scheme, the experimental device has a simple structure, is easy and convenient to operate, is suitable for series researches on deep solid-liquid separation of the high-concentration tailing slurry, and can be used for researching the deep solid-liquid separation rule of the high-concentration tailing slurry under pressure and different shearing forces.
Drawings
FIG. 1 is a schematic structural diagram of a high-concentration tailing slurry deep solid-liquid separation simulation experiment device;
FIG. 2 is a cross-sectional view of a load-bearing disc of the high-concentration tailing slurry deep solid-liquid separation simulation experiment device.
Wherein: 1-a slurry dewatering cup, 2-a compression dewatering system, 3-a shear dewatering system, 4-a data acquisition system, 5-a clamping groove weight, 6-a bearing disc, 7-a dewatering net, 8-a transmission shaft, 9-a speed reduction motor, 10-a torque sensor, 11-a pressure sensor and 12-a bracket;
601-sealing layer, 602-O type rubber sealing ring, 603-rotary water sealing ring, 604-water absorbing layer, 605-water permeable layer, 606-water permeable hole.
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 a high-concentration tailing slurry deep solid-liquid separation simulation experiment device.
As shown in fig. 1, the device comprises a slurry dewatering cup 1, a compression dewatering system 2, a shearing dewatering system 3 and a data acquisition system 4;
the compression dehydration system 2 comprises a clamping groove weight 5 and a bearing disc 6, the shearing dehydration system 3 comprises a dehydration net 7, a transmission shaft 8 and a speed reducing motor 9, and the data acquisition system comprises a torque sensor 10 and a pressure sensor 11;
the slurry dewatering cup 1 is arranged on the support 12, the compression dewatering system 2 is arranged above the inside of the slurry dewatering cup 1, the shearing dewatering system 3 is arranged below the compression dewatering system 2, the pressure sensor 11 is arranged at the bottom in the slurry dewatering cup 1, and the torque sensor 10 is arranged at the rotating shaft of the speed reducing motor 9.
6 center preformed holes of bearing disc, transmission shaft 8 pass this preformed hole, and gear motor 9 is connected on 8 upper portions of transmission shaft, and 8 sub-unit connections of transmission shaft dewater net 7, and 6 center tops of bearing disc set up draw-in groove weight 5, and 5 centre holes of draw-in groove weight are passed to transmission shaft 8.
The diameter of the slurry dewatering cup 1 is 5-7cm, the height is 16-20cm, and the volume is 400-600 ml.
The dewatering net 7 is placed in the slurry dewatering cup 1, the dewatering net 7 is welded on the transmission shaft 8 through three beams and four water guide rods, and the interval between the dewatering net 7 and the bottom of the slurry dewatering cup 1 is 1-2 cm.
The rotating speed of the speed reducing motor 9 is 0.5-5rpm, and the torque sensor 10 is connected with the speed reducing motor 9 and is arranged at the top end of the bracket 12.
The mass of the clamping groove weight 5 is 1kg-10kg, and the clamping groove of the clamping groove weight 5 is buckled with the transmission shaft 8 and is placed on the bearing disc 6.
As shown in figure 2, the thickness of the bearing disc 6 is 3-5cm, the bearing disc 6 sequentially comprises a sealing layer 601, a water absorbing layer 604 and a water permeable layer 605 from top to bottom, the thickness of the sealing layer 601 and the water permeable layer 605 is 0.5-1cm, the thickness of the water absorbing layer 604 is 2-3cm, an O-shaped rubber sealing ring 602 is arranged on the periphery of the sealing layer 601, a rotary water sealing ring 603 is arranged at a reserved hole in the center of the sealing layer 601, and the water absorbing layer 604 is arranged between the sealing layer 601 and the water permeable layer 605. During installation, the bearing disc 6 is horizontally placed in the slurry dewatering cup 1, the transmission shaft 8 penetrates through the bearing disc 6, the bearing disc and the slurry dewatering cup form a piston disc structure, the slurry dewatering cup 1 serves as a cylinder body of the piston disc, and the bearing disc 6 can move up and down along the transmission shaft 8 according to experimental requirements or under the action of gravity of the clamping groove weights 5.
The permeable layer 605 is uniformly provided with permeable holes 606 for water to pass through; the water-absorbent layer 604 is composed of filter paper and sponge.
The experimental device is applied as follows:
s1: taking 400-500ml of flocculated and settled high-concentration tailing slurry, placing the tailing slurry in a slurry dewatering cup 1, enabling the slurry to submerge the top end of a dewatering net 7 by 3-5cm, and opening a torque sensor 10 and a pressure sensor 11;
s2: arranging a new dry water absorption layer 604 in the bearing disc 6, placing 1kg-10kg of clamping groove weights 5 on the bearing disc 6, turning on the speed reducing motor 9, adjusting the rotating speed to 0.5-5rpm, and dehydrating for 10min-30 min;
s3: closing the speed reducing motor 9, the torque sensor 10 and the pressure sensor 11, taking down the clamping groove weights 5 and the bearing disc 6, and taking out the concentrated tailing slurry from the slurry dewatering cup 1 to perform concentration test and rheological property test;
s4: a cleaning slurry dewatering cup 1, a dewatering net 7 and a bearing disc 6.
In the specific application process, the experimental setup was first designed according to fig. 1. The dimensions of the key structures are as follows: the height of the slurry dewatering cup 1 is 20cm, the diameter is 7cm, the maximum slurry volume of the slurry dewatering cup 1 is 500ml, the width of the dewatering net 7 is 6cm, the height is 7cm, the distance between the dewatering net 7 and the bottom of the slurry dewatering cup 1 is 1cm, and the diameter and the thickness of the bearing disc 6 are 7cm and 6 cm.
In the application process, 20-35% of full-tailing slurry is prepared, and a flocculating agent solution is added according to the unit consumption of 20g/t of flocculating agent for a static settlement experiment. After settling for a period of time, 500ml of high-concentration tailing slurry is placed in a slurry dewatering cup 1, so that the slurry is 5cm above the upper end of a dewatering net, and a torque sensor 10 and a pressure sensor 11 are started. After installing a new dry water-absorbing layer 604 in the load-bearing disc 6, the load-bearing disc 6 is horizontally placed in the slurry dewatering cup 1. A10 kg clamping groove weight 5 is placed on a bearing disc 6, and a clamping groove of the clamping groove weight 5 is buckled on a transmission shaft 8. Turning on the speed reducing motor 9, adjusting the rotating speed to 3rpm, and dehydrating for 30 min. And closing the torque sensor 10, the pressure sensor 11 and the speed reducing motor 9, taking out the bearing disc 6 and the dewatering net 7, and taking out the underflow to carry out concentration test and rheological property test.
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.
Claims (9)
1. A simulation experiment device for deep solid-liquid separation of high-concentration tailing slurry is characterized by comprising a slurry dewatering cup, a compression dewatering system, a shearing dewatering system and a data acquisition system;
the compression dehydration system comprises a clamping groove weight and a bearing disc, the shearing dehydration system comprises a dehydration net, a transmission shaft and a speed reduction motor, and the data acquisition system comprises a torque sensor and a pressure sensor;
the slurry dewatering cup is arranged on the support, a compression dewatering system is arranged above the inside of the slurry dewatering cup, a shearing dewatering system is arranged below the compression dewatering system, a pressure sensor is arranged at the bottom in the slurry dewatering cup, and a torque sensor is arranged at the rotating shaft of the speed reduction motor.
2. The deep solid-liquid separation simulation experiment device for the high-concentration tailing slurry according to claim 1, wherein a hole is reserved in the center of the bearing disc, the transmission shaft penetrates through the reserved hole, the upper portion of the transmission shaft is connected with a speed reducing motor, the lower portion of the transmission shaft is connected with a dewatering net, a clamping groove weight is arranged above the center of the bearing disc, and the transmission shaft penetrates through the central hole of the clamping groove weight.
3. The deep solid-liquid separation simulation experiment device for high-concentration tailing slurry as recited in claim 1, wherein the slurry dewatering cup has a diameter of 5-7cm, a height of 16-20cm and a volume of 400-600 ml.
4. The deep solid-liquid separation simulation experiment device for the high-concentration tailing slurry as recited in claim 1, wherein the dewatering screen is placed in the slurry dewatering cup, the dewatering screen is welded on the transmission shaft through three beams and four water guide rods, and the distance between the dewatering screen and the bottom of the slurry dewatering cup is 1-2 cm.
5. The deep solid-liquid separation simulation experiment device for the high-concentration tailing slurry according to claim 1, wherein the rotating speed of the speed reducing motor is 0.5-5rpm, and the torque sensor and the speed reducing motor are connected together and mounted at the top end of the bracket.
6. The deep solid-liquid separation simulation experiment device for the high-concentration tailing slurry as recited in claim 1, wherein the weight of the clamping groove weight is 1kg-10kg, and the clamping groove of the clamping groove weight is arranged on the bearing disc in a manner of buckling the transmission shaft.
7. The deep solid-liquid separation simulation experiment device for the high-concentration tailing slurry according to claim 1, wherein the thickness of the bearing disc is 3-5cm, the bearing disc sequentially comprises a sealing layer, a water absorbing layer and a water permeable layer from top to bottom, the thickness of the sealing layer and the water permeable layer is 0.5-1cm, the thickness of the water absorbing layer is 2-3cm, an O-shaped rubber sealing ring is arranged on the periphery of the sealing layer, a rotary water sealing ring is arranged at a central reserved hole of the sealing layer, and the water absorbing layer is arranged between the sealing layer and the water permeable layer; during installation, the bearing disc is horizontally placed in the slurry dewatering cup, the transmission shaft penetrates through the bearing disc, the bearing disc and the slurry dewatering cup form a piston disc structure, the slurry dewatering cup serves as a cylinder body of the piston disc, and the bearing disc moves up and down along the transmission shaft according to experimental requirements or under the action of gravity of the clamping groove weights.
8. The deep solid-liquid separation simulation experiment device for the high-concentration tailing slurry according to claim 7, wherein water permeable holes for facilitating water to pass through are uniformly arranged on the water permeable layer; the water absorbing layer consists of filter paper and sponge.
9. The deep solid-liquid separation simulation experiment device for the high-concentration tailing slurry according to claim 1, which is characterized by comprising the following application processes:
s1: taking 400-500ml of flocculated and settled high-concentration tailing slurry, placing the tailing slurry in a slurry dewatering cup, enabling the slurry to submerge the top end of a dewatering net by 3-5cm, and opening a torque sensor and a pressure sensor;
s2: arranging a new dry water absorption layer in a bearing disc, placing 1kg-10kg of clamping groove weights on the bearing disc, turning on a speed reducing motor, adjusting the rotating speed to 0.5-5rpm, and dehydrating for 10min-30 min;
s3: closing the speed reducing motor, the torque sensor and the pressure sensor, taking down the weight of the clamping groove and the bearing disc, and taking out the concentrated tailing slurry from the slurry dewatering cup to perform concentration test and rheological property test;
s4: a slurry cleaning dehydration cup, a dehydration net and a bearing disc.
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| CN202210355274.7A CN114813464B (en) | 2022-04-02 | 2022-04-02 | High-concentration tailing slurry deep solid-liquid separation simulation experiment device |
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2022
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| AU2015204309B1 (en) * | 2015-07-15 | 2016-08-04 | Austech Supplies Pty Ltd | Water-saving electromagnetic panning mineral separating system |
| CN108392857A (en) * | 2018-03-29 | 2018-08-14 | 北京科技大学 | A kind of deep wimble thickener of underflow density quick self modulation control |
| CN108658415A (en) * | 2018-04-08 | 2018-10-16 | 江苏大学 | A kind of negative pressure electro-osmosis coupling sludge deep heat drying device |
| CN111087157A (en) * | 2020-01-23 | 2020-05-01 | 徐州矿源环保科技有限公司 | Sludge filter-pressing device of deep sludge filter-pressing dehydration system |
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