CN110542626A - rheometer-based tailing dewatering performance detection device and use method thereof - Google Patents
rheometer-based tailing dewatering performance detection device and use method thereof Download PDFInfo
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- CN110542626A CN110542626A CN201910855444.6A CN201910855444A CN110542626A CN 110542626 A CN110542626 A CN 110542626A CN 201910855444 A CN201910855444 A CN 201910855444A CN 110542626 A CN110542626 A CN 110542626A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000001514 detection method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 230000018044 dehydration Effects 0.000 claims abstract description 50
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 44
- 230000005540 biological transmission Effects 0.000 claims abstract description 32
- 238000012545 processing Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims description 22
- 238000010008 shearing Methods 0.000 claims description 22
- 239000002245 particle Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000004062 sedimentation Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 238000013480 data collection Methods 0.000 claims description 3
- 238000005189 flocculation Methods 0.000 claims description 3
- 230000016615 flocculation Effects 0.000 claims description 3
- 230000008719 thickening Effects 0.000 abstract description 19
- 238000011160 research Methods 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 150000002739 metals Chemical class 0.000 abstract description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000010931 gold Substances 0.000 abstract description 2
- 229910052737 gold Inorganic materials 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000010970 precious metal Substances 0.000 abstract description 2
- 239000002562 thickening agent Substances 0.000 description 9
- 239000002002 slurry Substances 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
- B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
- B01D21/06—Settling tanks with single outlets for the separated liquid with moving scrapers with rotating scrapers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
Abstract
the invention provides a rheometer-based tailing dewatering performance detection device and a use method thereof, and belongs to the technical field of paste filling tailing thickening. The device comprises a computer, a connecting wire, a rheometer, a transmission shaft, a connecting device, a water guide rod, a cylindrical material containing barrel and experimental materials. The rheometer is connected to transmission shaft one end, and the water guide pole is connected to the other end, and transmission shaft and water guide pole link to each other by connecting device, and transmission shaft, connecting device and water guide pole constitute the dehydration harrow frame jointly, and the dehydration harrow frame is placed in cylindrical material containing barrel, and the experimental materials is placed in cylindrical material containing barrel, and the rheometer passes through the connecting wire and is connected with the computer. The device processing is simple, the cost of manufacture is lower relatively, easy operation, intelligence are high, all can implement fast in enterprise, colleges and universities, the research institute that possess the rheometer, and the monitoring index is comprehensive, high-efficient. Can provide theoretical research and technical support for various mine enterprises which generate tailings such as nonferrous metals, black metals, precious metals, rare metals, gold and the like.
Description
Technical Field
the invention relates to the technical field of paste filling tailing thickening, in particular to a tailing dewatering performance detection device based on a rheometer and a use method thereof.
Background
the paste filling mining technology is the leading-edge filling mining technology at present, has the advantages of environmental protection, economy, safety and high efficiency, and is one of hot techniques for the research of the mining field at home and abroad in recent years. Through years of research and practice, the technology is successfully applied to a plurality of metal mines in China.
The tailing thickening is an important process for filling paste, and generally, mill tailings are directly pumped into a deep cone thickener to be dewatered for a section. In the whole dehydration process, the most important are the dehydration concentration and the torque of a harrow frame inside a thickener. The dehydration concentration of the tailings is directly related to the concentration of the final underground paste, so that the filling quality such as the strength of the paste is influenced. The torque reflects the running state of the thickener, and the over-large torque design can cause over-high energy consumption and resource waste; the torque is designed to be too small, and rake pressing accidents can occur in the operation process.
The traditional tailing dynamic dehydration device generally only rotates at a simple and slow speed, can prejudge the ultimate dehydration concentration of the whole tailing in advance, and provides basic data for material balance, paste proportioning and the like of the whole system. Generally, the torque of a rake frame of a thickener is theoretically calculated through rheological parameters of tailings, and a device for directly monitoring the torque of the rake frame in a dynamic dehydration process is rarely reported.
therefore, the invention provides a device for detecting the tailing dewatering performance based on a rheometer and a using method thereof by taking the advanced rheometer as a carrier. The device gives consideration to multiple functions of directly detecting parameters such as dynamic dehydration of tailings and shearing force, torque and the like, enriches the performance detection of dynamic dehydration of tailings, and has important theoretical research and engineering guidance significance for dense dehydration of tailings.
Disclosure of Invention
The invention aims to provide a device for detecting the tailing dewatering performance based on a rheometer and a using method thereof.
the device includes computer, connecting wire, rheometer, transmission shaft, connecting device, water guide rod and cylindrical flourishing feed cylinder, and the rheometer is connected to transmission shaft one end, and the transmission shaft other end passes through connecting device and connects the water guide rod, and the dehydration harrow frame is constituteed to transmission shaft, connecting device and water guide rod, and the dehydration harrow frame is arranged in cylindrical flourishing feed cylinder, is equipped with the experimental material in the cylindrical flourishing feed cylinder, and the rheometer passes through the connecting wire and links to each other with the computer.
The rheometer adopts a currently commercialized rheometer, is suitable for detecting rheological parameters of water-containing slurry, and can directly measure parameters such as torque, shearing force and viscosity of experimental materials, wherein the rotating speed of the rheometer is 0.01-800 r/min, the shearing force measuring range is 0-2000 Pa, the viscosity measuring range is 0.001-80 kPa.S, and the torque measuring range is 0.05-50 mNm.
The upper end of the transmission shaft is fixedly connected with the rheometer, and the lower end of the transmission shaft is connected with the water guide rod into a whole through a connecting device.
The diameter, the length and the number of the water guide rods are determined according to the specification of the cylindrical material containing barrel. Generally speaking, the diameter of the water guide rods is 1 mm-5 mm, and the number of the water guide rods is 2-5.
The cylindrical material containing barrel is transparent or is provided with a highly transparent observation point of a mud layer; the dehydration rake frame is arranged in the cylindrical material containing barrel, and a gap of 5 mm-3 cm is reserved between the dehydration rake frame and the side wall and the bottom of the cylindrical material containing barrel.
The experimental materials include tailings, water, flocculant solution, etc., the maximum particle size of the tailings is consistent with the particle size of the rheometer measurement material, generally speaking, the particle size of the tailings is less than 2000 microns.
The method for using the device comprises the following steps:
S1: processing a cylindrical material containing barrel meeting the requirements according to the requirements;
s2: processing water guide rods with different diameters, heights and numbers according to the size of the cylindrical material containing barrel and experimental requirements; processing a transmission shaft according to the interface of the rheometer; meanwhile, a connecting device of the transmission shaft and the water guide rod is processed; the transmission shaft, the water guide rod and the connecting device are assembled into a whole to form the dewatering harrow frame;
s3: connecting the upper end of the dehydration rake frame with a rheometer interface, and placing the dehydration rake frame in a cylindrical material containing barrel;
S4: calculating the mass of tailings and water required by different concentrations and different mud layer heights and the corresponding addition amount of a flocculant solution;
S5: before the test is started, adding water and a flocculant solution with preset mass, starting a rheometer, stirring at high speed for 4-8 minutes, then uniformly adding powdery dry tailings with preset mass, reducing the rotating speed of the rheometer, and starting to detect performance parameters in the tailings flocculation sedimentation and dynamic dehydration processes;
s6: and after the data collection is finished, downloading the data by adopting a computer, and carrying out data processing and analysis.
In the device, a computer mainly controls the rotating speed of the self-made dewatering rake frame through a program and monitors parameters such as torque, shearing force, viscosity and the like in real time. The connecting wire is a special cable and is used for transmitting a computer control signal to the rheometer.
The technical scheme of the invention has the following beneficial effects:
In the above scheme, the device processing is simple, the cost of manufacture is lower relatively, easy operation, intelligence is high, all enterprises, colleges and universities, the institute that possess the rheometer can all implement fast, and the monitoring index is comprehensive, high-efficient. Not only enriches the research means of the dynamic dehydration of the tailings, but also provides the basis for the safe and economic operation of the deep cone thickener, and has stronger theoretical research and practical value. Can provide theoretical research and technical support for various mine enterprises which generate tailings such as nonferrous metals, black metals, precious metals, rare metals, gold and the like. The method using the device can measure the dynamic dehydration concentration of the tailings, can monitor various parameters such as torque, shearing force, viscosity and the like in the dehydration process in the whole process, and provides basis and guidance for the dynamic dehydration and the safe operation of deep cones of the tailings. The method mainly has the following advantages: first, the dehydration parameters are adjustable. The rotating speed is adjustable, the number and the length of the water guide rods are adjustable, the height of slurry is adjustable, and the thickening time is controllable; secondly, the detection parameters are comprehensive. Including settling height, slurry concentration, torque, shear force, viscosity, etc. Thirdly, the measurement precision is high. The method has the advantages that the inherent characteristics of the rheometer of the precision instrument can be used for fully automatically acquiring the data of the whole monitoring process, and finally the monitoring data is downloaded through a computer, so that the monitoring data is accurate and efficient, and a basis can be provided for model selection and safe and efficient operation of a thickener.
Drawings
FIG. 1 is a schematic structural diagram of a device for detecting the dehydration performance of tailings based on a rheometer, according to the invention;
FIG. 2 is a variation rule of the total tailings dewatering mass fraction with dewatering time in the embodiment of the present invention;
FIG. 3 is a change rule of shearing force and torque of the water guide rod in the charging process in the embodiment of the invention;
FIG. 4 is a water guide rod shearing force and torque evolution law in the dehydration process in the embodiment of the invention.
Wherein: 1-a computer; 2-connecting wires; 3-a rheometer; 4-a transmission shaft; 5-a connecting device; 6-a water guide rod; 7-a cylindrical material containing barrel; 8-test materials.
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 device for detecting the dehydration performance of tailings based on a rheometer and a using method thereof, aiming at the problem that the existing dynamic tailing dehydration device has a single function. The device dehydration rotational speed is adjustable, not only can simulate dynamic dewatering device and predict tailing limit dehydration concentration, can also carry out accurate detection to properties such as shearing force, moment of torsion in the tailing dehydration process.
As shown in fig. 1, the device comprises a computer 1, a connecting line 2, a rheometer 3, a transmission shaft 4, a connecting device 5, a water guide rod 6 and a cylindrical material containing barrel 7, wherein one end of the transmission shaft 4 is connected with the rheometer 3, the other end of the transmission shaft 4 is connected with the water guide rod 6 through the connecting device 5, the transmission shaft 4, the connecting device 5 and the water guide rod 6 form a dehydration rake frame, the dehydration rake frame is arranged in the cylindrical material containing barrel 7, an experimental material 8 is arranged in the cylindrical material containing barrel 7, and the rheometer 3 is connected with the computer 1 through the connecting line 2.
The rheometer 3 can measure torque, shearing force and viscosity parameters of the experimental material 8, the rotating speed of the rheometer 3 is 0.01-800 r/min, the shearing force measuring range is 0-2000 Pa, the viscosity measuring range is 0.001-80 kPa.S, and the torque measuring range is 0.05-50 mNm.
The upper end of the transmission shaft 4 is fixedly connected with the rheometer 3, and the lower end of the transmission shaft 4 is connected with the water guide rod 6 into a whole through the connecting device 5.
The diameter, length and number of the water guide rods 6 are determined according to the specification of the cylindrical material containing barrel 7. Generally, the diameter of the water guide rods 6 is 1 mm-5 mm, and the number of the water guide rods is 2-5.
The cylindrical material containing barrel 7 is transparent or is provided with a highly transparent observation point of a mud layer; the dehydration rake frame is arranged in the cylindrical material containing barrel 7, and a gap of 5 mm-3 cm is reserved between the dehydration rake frame and the side wall and the bottom of the cylindrical material containing barrel 7.
The experimental material 8 comprises tailings, water, a flocculant solution and the like, the maximum particle size of the tailings is consistent with that of particles of a material measured by a rheometer, and the particle size of the tailings is less than 2000 microns.
the method for using the detection device comprises the following steps:
S1: processing a cylindrical material containing barrel 7 meeting the requirements according to the requirements;
s2: processing water guide rods with different diameters, heights and numbers according to the size of the cylindrical material containing barrel 7 and experimental requirements; processing a transmission shaft 4 according to an interface of the rheometer 3; simultaneously processing a connecting device 5 of the transmission shaft and the water guide rod; the transmission shaft 4, the water guide rod 6 and the connecting device 5 are assembled into a whole to form a dewatering harrow frame;
S3: connecting the upper end of the dehydration rake frame with an interface of a rheometer 3, and placing the dehydration rake frame in a cylindrical material containing barrel 7;
S4: calculating the mass of tailings and water required by different concentrations and different mud layer heights and the corresponding addition amount of a flocculant solution;
s5: before the test is started, adding water and a flocculant solution with preset mass, starting the rheometer 3, stirring at high speed for 4-8 minutes, then uniformly adding powdery dry tailings with preset mass, reducing the rotating speed of the rheometer 3 at the moment, and starting to detect performance parameters in the tailings flocculation sedimentation and dynamic dehydration processes;
S6: after the data collection is finished, the computer 1 is adopted to download the data, and the data processing and analysis are carried out.
The following description is given with reference to specific examples.
(1) ultimate dehydration concentration prediction
The device is adopted to carry out dynamic stirring experiments, the mass of water per mm of the measuring cylinder is firstly calculated before the experiments, and the mass of the water corresponding to the height per mm is calculated to be 5.3175 g/mm. 1400g of water was first added to the graduated cylinder, 16g of 0.1% strength flocculant solution was added, and the flocculant solution was stirred for 5 minutes. 800g of tailings were then added, with a timer started. The corresponding slurry concentration was calculated by recording the height of the mud layer at different times, as shown in figure 2. As can be seen from the figure, the mass fraction is 69.74% when the thickening time is 1 h; when the thickening time is 2 hours, the mass fraction is 71.06 percent; when the thickening time is 3 hours, the mass fraction is 73.13%; when the thickening time is 4 hours, the mass fraction is 75.33%; when the thickening time is 5 hours, the mass fraction is not improved basically, and the limit dehydration concentration is reached. Correspondingly, when the rotating speed of the rake frame is 0, namely a measuring cylinder static settlement experiment is carried out, the same unit consumption flocculating agent is added, and the limit concentration can reach 66.29% after 48 hours of settlement; the average concentration of the slurry obtained by the dynamic experimental device is improved by 9.04 percent compared with the static settlement of the measuring cylinder. Therefore, the concentration of the slurry obtained by dynamic sedimentation is closer to the underflow of the deep cone thickener, and the device has good effect on the detection of the dynamic dehydration concentration.
(2) shear force and torque monitoring
because this dynamic stirring device can monitor two very important parameters of shear force and moment of torsion in the stirring process, consequently, the embodiment is to the shear force and the moment of torsion evolution law detect in the time quantum that does not change from the experimental feeding to the mud layer height. The experiment used 600g of tailings, 1400g of water, 12g of 0.1% strength flocculant solution, and a final mud layer height to graduated cylinder diameter ratio of about 0.83:1 (simulating the existing deep cone thickener mud layer height to diameter ratio).
Influence of charging process on shearing force and torque
Firstly, adding a flocculant solution into water, stirring and diluting, starting tailing addition after about 5min of stirring, finishing tailing addition when about 4min is finished, and continuously increasing shearing force and torque in the tailing addition (feeding) process. The shear force at the end of the addition was about 130Pa, the torque was less than 4mNm, and the shear force and the torque were 1/6.3 and 1/6, respectively, of the shear force and the torque at the time of smooth running. The shear force and torque changes during the addition are shown in figure 3. It can be concluded from this that the deep cone thickener also has an increasing torque during the initial feeding, but the increase is small.
② evolution law of shearing force and torque in thickening process
when the feeding is finished, the tailings and the water flow reversely under the action of the rake frame and the gravity, the tailings are continuously settled, and the pore water continuously rises along the water guide channel opened by the water guide rod. The tailing slurry concentration is higher and higher due to continuous dehydration. Therefore, the shearing force and the torque are increased continuously in the thickening process, and the relation of the shearing force and the torque with the stirring time at different times in the thickening process is shown in a figure 4. When the thickening time is increased to 2h, the increasing rates of the shearing force and the torque are small and gradually tend to be constant. This is because when the internal water content of the tailings slurry is dehydrated to a certain degree, the concentrated tailings are not dehydrated basically because the tailings have a compact porosity, that is, the compressed concentration of the tailings is nearly constant. Therefore, when the tailings are concentrated to some extent, the shear force and torque thereof are substantially at a constant value.
according to the change of the shearing force and the torque in the tailing thickening process, the tailing thickening can be divided into three processes:
first, the torque increases rapidly over time. The thickening time is 0-1 h, and the shearing force and the torque are increased from 0 to 570Pa and 17mNm respectively;
Second, the torque attenuation increases over time. The thickening time is 1-2 h, and the shearing force and the torque are increased from 570Pa and 17mNm to 819Pa and 24mNm respectively which are 1.44 times and 1.41 times of 1 h; the shear force and torque are still continuously increased in the process, but the increase rate is smaller and smaller;
Third, a constant torque dense zone. After the thickening time of 2h, the shear force and the torque substantially tend to be constant. For example, when the thickening time is 4 hours, the shear force and the torque are respectively about equal to 2 hours from 823Pa and 24 mNm.
therefore, the device not only can predict the ultimate dehydration concentration of the tailings, but also has the detection of parameters such as shearing force, torque and the like in the dehydration process, has the performance detection function lacking in the traditional dynamic dehydration experimental device, and has a good implementation effect.
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 (8)
1. The utility model provides a tailing dewatering performance detection device based on rheometer which characterized in that: including computer (1), connecting wire (2), rheometer (3), transmission shaft (4), connecting device (5), water guide rod (6) and cylindrical flourishing feed cylinder (7), rheometer (3) is connected to transmission shaft (4) one end, water guide rod (6) are connected through connecting device (5) to transmission shaft (4) the other end, transmission shaft (4), connecting device (5) and water guide rod (6) are constituteed and are dewatered the harrow frame, cylindrical flourishing feed cylinder (7) are arranged in to the dehydration harrow frame, cylindrical flourishing feed cylinder (7) are equipped with experimental material (8), rheometer (3) link to each other with computer (1) through connecting wire (2).
2. The rheometer-based tailing dewatering performance detection apparatus as claimed in claim 1, wherein: the rheometer (3) can directly measure the torque, shearing force and viscosity parameters of the experimental material (8); the rotating speed of the rheometer (3) is 0.01-800 r/min, the measuring range of the shearing force is 0-2000 Pa, the measuring range of the viscosity is 0.001-80 kPa.S, and the measuring range of the torque is 0.05-50 mNm.
3. The rheometer-based tailing dewatering performance detection apparatus as claimed in claim 1, wherein: the upper end of the transmission shaft (4) is fixedly connected with the rheometer (3), and the lower end of the transmission shaft (4) is connected with the water guide rod (6) into a whole through a connecting device (5).
4. The rheometer-based tailing dewatering performance detection apparatus as claimed in claim 1, wherein: the diameter, the length and the number of the water guide rods (6) are determined according to the specification of the cylindrical material containing barrel (7).
5. the rheometer-based tailing dewatering performance detection apparatus as claimed in claim 4, wherein: the diameter of the water guide rods (6) is 1-5 mm, and the number of the water guide rods is 2-5.
6. The rheometer-based tailing dewatering performance detection apparatus as claimed in claim 1, wherein: the cylindrical material containing barrel (7) is a transparent observation point or a highly transparent observation point with a mud layer; the dehydration rake frame is arranged in the cylindrical material containing barrel (7), and a gap of 5 mm-3 cm is reserved between the dehydration rake frame and the side wall and the bottom of the cylindrical material containing barrel (7).
7. the rheometer-based tailing dewatering performance detection apparatus as claimed in claim 1, wherein: the experimental material (8) comprises tailings, water and a flocculant solution, wherein the maximum particle size of the tailings is consistent with that of particles of a material measured by a rheometer, and the particle size of the tailings is less than 2000 microns.
8. the method for using the rheometer-based tailing dewatering performance detection device of claim 1, wherein: the method comprises the following steps:
S1: processing a cylindrical material containing barrel (7) meeting the requirements according to the requirements;
S2: processing water guide rods with different diameters, heights and quantities according to the size of the cylindrical material containing barrel (7) and experimental requirements; processing a transmission shaft (4) according to the interface of the rheometer (3); meanwhile, a connecting device (5) of the transmission shaft and the water guide rod is processed; the transmission shaft (4), the water guide rod (6) and the connecting device (5) are assembled into a whole, namely the dewatering harrow frame;
s3: connecting the upper end of the dehydration rake frame with an interface of a rheometer (3), and placing the dehydration rake frame in a cylindrical material containing barrel (7);
S4: calculating the mass of tailings and water required by different concentrations and different mud layer heights and the corresponding addition amount of a flocculant solution;
S5: before the test is started, adding water and a flocculant solution with preset mass, starting the rheometer (3), stirring at high speed for 4-8 minutes, then uniformly adding powdery dry tailings with preset mass, reducing the rotating speed of the rheometer (3), and starting to detect performance parameters in the tailings flocculation sedimentation and dynamic dehydration processes;
S6: after the data collection is finished, the data is downloaded by adopting the computer (1) and is processed and analyzed.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113109515A (en) * | 2021-04-14 | 2021-07-13 | 北京科技大学 | Three-section type full tailings flocculation sedimentation and dense dehydration experimental research device |
| CN115138107A (en) * | 2022-08-02 | 2022-10-04 | 山东黄金矿业科技有限公司充填工程实验室分公司 | Gold mine tailing slurry dynamic flocculation sedimentation simulation experiment system and method |
| CN115165689A (en) * | 2022-09-06 | 2022-10-11 | 矿冶科技集团有限公司 | Quantitative evaluation method for tailing sedimentation performance |
| CN115235890A (en) * | 2022-07-13 | 2022-10-25 | 北京科技大学 | High-concentration tailing slurry dual rheological property experimental research device and use method |
| WO2024051711A1 (en) * | 2022-09-06 | 2024-03-14 | 矿冶科技集团有限公司 | Tailings settlement test device and method |
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