CN115138107A - Gold mine tailing slurry dynamic flocculation sedimentation simulation experiment system and method - Google Patents
Gold mine tailing slurry dynamic flocculation sedimentation simulation experiment system and method Download PDFInfo
- Publication number
- CN115138107A CN115138107A CN202210923932.8A CN202210923932A CN115138107A CN 115138107 A CN115138107 A CN 115138107A CN 202210923932 A CN202210923932 A CN 202210923932A CN 115138107 A CN115138107 A CN 115138107A
- Authority
- CN
- China
- Prior art keywords
- conveying
- simulation
- tailing slurry
- height
- flocculation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004088 simulation Methods 0.000 title claims abstract description 102
- 239000002002 slurry Substances 0.000 title claims abstract description 86
- 230000016615 flocculation Effects 0.000 title claims abstract description 59
- 238000005189 flocculation Methods 0.000 title claims abstract description 59
- 238000004062 sedimentation Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 35
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 239000010931 gold Substances 0.000 title claims abstract description 23
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 23
- 238000002156 mixing Methods 0.000 claims abstract description 29
- 238000002360 preparation method Methods 0.000 claims abstract description 28
- 239000008394 flocculating agent Substances 0.000 claims abstract description 26
- 238000005070 sampling Methods 0.000 claims abstract description 25
- 230000003311 flocculating effect Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 75
- 238000010790 dilution Methods 0.000 claims description 46
- 239000012895 dilution Substances 0.000 claims description 46
- 239000007787 solid Substances 0.000 claims description 32
- 239000000243 solution Substances 0.000 claims description 17
- 238000004364 calculation method Methods 0.000 claims description 14
- 230000002572 peristaltic effect Effects 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 9
- 238000013329 compounding Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000011161 development Methods 0.000 claims description 3
- 230000018109 developmental process Effects 0.000 claims 1
- 238000011049 filling Methods 0.000 abstract description 7
- 230000008719 thickening Effects 0.000 abstract description 5
- 238000002474 experimental method Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 238000009533 lab test Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010877 mill tailing Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000009489 vacuum treatment Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/04—Investigating sedimentation of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Abstract
The invention discloses a gold mine tailing slurry dynamic flocculation sedimentation simulation experiment system and method. The simulation experiment system comprises a tailing slurry preparation and conveying system, a flocculating agent preparation and conveying system, a flocculating and mixing system and a perspective simulation system. The perspective simulation system comprises a plurality of perspective simulation barrels arranged in parallel, the height of each perspective simulation barrel is larger than 2m, and height scales are marked on the barrel wall; the output end of the flocculation mixing system is respectively connected with the top end of each perspective simulation cylinder through shunt tubes arranged in parallel, and each shunt tube is respectively provided with a control valve; the wall of each perspective simulation cylinder is also provided with a plurality of sampling valves arranged along the height direction. The invention provides accurate experimental data and technical parameters for the design of a tailing slurry thickening and dewatering system in mine filling operation, and simultaneously provides an efficient and convenient flocculation and sedimentation experimental method for laboratory tests.
Description
Technical Field
The invention relates to the technical field of tailing thickening and dewatering in gold mine filling mining, in particular to a dynamic flocculation sedimentation simulation experiment system and a dynamic flocculation sedimentation simulation experiment method.
Background
The environmental protection is a great trend of mining industry development, and the filling mining gradually becomes an important component of the green development of mine enterprises. The mill tailing dewatering process is an important link of mine filling, and the quality of dewatering directly influences the filling quality.
The dehydration performance of the tailings with different physicochemical properties is different. At present, vertical sand bins and deep cone thickeners are mainly adopted for carrying out concentration and dehydration on tailings in a mill selection. The tailings of the selected factory are layered at the vertical section of the vertical sand silo, the coarse tailings are under, the fine tailings are above, the coarse tailings are distributed in a gradient manner, the fluctuation of the sand discharge mass concentration is large, and the preparation quality and the preparation efficiency of the filling slurry are seriously influenced.
The existing dynamic thickening experimental machine has the following defects: (1) The static flocculation sedimentation experiment is carried out by adopting a 1000ML graduated cylinder, the height is generally lower and is less than 1m, the underflow concentration test with different gradients and the dynamic flocculation sedimentation simulation experiment with different longitudinal sections cannot be realized, and the underflow concentration is greatly different from the actual underflow concentration; (2) The solid content of the overflow water is detected by adopting the modes of vacuum treatment, suction filtration, drying and weighing, the error is large, the time is long, the operation is complex, and the dynamic online monitoring of the solid content of the overflow water cannot be realized; (3) The change of the underflow concentration in the dynamic feeding and discharging process cannot be simulated; (4) Only the optimal pulp dilution concentration and the optimal flocculant dosage can be obtained, and the accurate solid flux of the thickener cannot be obtained.
In conclusion, the existing simulation experiment device and method cause low precision of laboratory detection results and large errors, so that the tailing slurry thickening and dewatering process is unreasonable in selection, inaccurate in technical parameters, large in investment and poor in operation effect.
Disclosure of Invention
The invention provides a gold mine tailing slurry dynamic flocculation sedimentation simulation experiment system and a method, and aims to provide the following steps: (1) The underflow concentration test with different gradients and the dynamic flocculation sedimentation simulation experiment with different longitudinal sections are realized; (2) The detection precision of the solid content of the overflow water is improved, and the detection efficiency is improved; (3) The underflow concentration detection in the dynamic feeding and discharging process is realized; (4) The efficiency of obtaining the optimal pulp dilution concentration and the optimal flocculant dosage is improved, and the solid flux is obtained.
The technical scheme of the invention is as follows:
a gold mine tailing slurry dynamic flocculation sedimentation simulation experiment system comprises a tailing slurry preparation and conveying system, a flocculating agent preparation and conveying system, a flocculation material mixing system and a perspective simulation system, wherein the tailing slurry preparation and conveying system and the flocculating agent preparation and conveying system are respectively communicated with the flocculation material mixing system, the flocculation material mixing system is communicated with the perspective simulation system, the perspective simulation system comprises a plurality of perspective simulation cylinders which are arranged in parallel, the height of each perspective simulation cylinder is greater than 2m, and height scales are marked on the cylinder wall; the output end of the flocculation mixing system is respectively connected with the top ends of the perspective simulation cylinders through shunt tubes arranged in parallel, and each shunt tube is respectively provided with a control valve;
the wall of each perspective simulation cylinder is also provided with a plurality of sampling valves arranged along the height direction.
As a further improvement of the gold mine tailing slurry dynamic flocculation sedimentation simulation experiment system: the upper end of each perspective simulation cylinder is provided with an overflow water discharge valve, each overflow water discharge valve is connected to an overflow water collecting tank through an overflow water pipeline, and a turbidity meter for detecting the solid content of the overflow water is further arranged in the overflow water collecting tank.
As a further improvement of the gold mine tailing slurry dynamic flocculation sedimentation simulation experiment system: the system also comprises a dilution water conveying pipeline, wherein the inlet end of the dilution water conveying pipeline is communicated with the overflow water collecting tank, and the outlet end of the dilution water conveying pipeline is communicated with the tailing slurry preparation conveying system and is used for adding overflow water into tailing slurry; and a submersible pump and a third flow meter are also arranged on the dilution water conveying pipeline.
As a further improvement of the gold mine tailing slurry dynamic flocculation sedimentation simulation experiment system: the bottommost ends of the perspective simulation cylinders are respectively provided with a first bottom end discharge valve, and the first bottom end discharge valves are communicated to the sedimentation tank through bottom end discharge pipelines; and the bottom end discharge pipeline is provided with a bottom flow pump and a second bottom end discharge valve positioned between two adjacent first bottom end discharge valves.
As a further improvement of the gold mine tailing slurry dynamic flocculation sedimentation simulation experiment system: the flocculant preparation conveying system comprises an agitating tank, a first peristaltic pump and a first flow meter;
the output end of the stirring tank is communicated with the flocculation mixing system through a flocculating agent conveying pipeline; the first peristaltic pump and the first flow meter are both arranged on the flocculant conveying pipeline;
the tailing slurry preparing and conveying system comprises a stirring barrel, a second peristaltic pump, a second flowmeter and a tailing slurry cache groove;
the output of agitator pass through tailing pulp pipeline with tailing pulp buffer tank communicates mutually, second peristaltic pump and second flowmeter all set up on tailing pulp pipeline, the output of tailing pulp buffer tank with flocculation compounding system is linked together.
As a further improvement of the gold mine tailing slurry dynamic flocculation sedimentation simulation experiment system: the flocculation mixing system comprises a branch pipe and a central feed cylinder; the branched pipes are distributed above the central feed cylinder uniformly, and the upper ends of the branched pipes are connected with the flocculating agent conveying pipeline respectively;
the output end of the tailing slurry buffer tank is arranged on the side wall of the central feeding barrel, and tailing slurry is conveyed into the central feeding barrel along the tangential direction of the central feeding barrel.
As a further improvement of the gold mine tailing slurry dynamic flocculation sedimentation simulation experiment system: the system also comprises a computer, wherein the computer is connected with the electric valves and the detection devices in the tailing pulp preparation and conveying system, the flocculating agent preparation and conveying system, the flocculating and mixing system and the perspective simulation system through data transmission signal lines.
The invention also discloses a simulation experiment method based on the gold mine tailing slurry dynamic flocculation and sedimentation simulation experiment system, which comprises the following steps:
step 1, measuring the optimal dilution concentration of tailing slurry; the method comprises the following specific steps:
1-1, setting a plurality of groups of different tailing slurry conveying amounts Q1, a fixed dilution water amount Q2 and a fixed flocculant solution conveying amount Q3-0;
1-2, respectively carrying out the following operations for different tailing slurry conveying amounts Q1: respectively putting tailing slurry, dilution water and a flocculating agent into a flocculation mixing system according to the current Q1, Q2 and Q3-0, then conveying the mixed liquid into one of perspective simulation cylinders for sedimentation, measuring the solid content of overflow water after time T, and measuring the processing capacity value = M/(T S), wherein M is the quality of treated tailings, T is sedimentation time, and S is the cross-sectional area of the perspective simulation cylinder;
1-3, selecting the maximum Q1-1 value under the condition that the solid content is less than 200 mg/L and the minimum Q1-2 value under the condition that the solid content is more than 200 mg/L, then taking a plurality of new tailing slurry conveying amounts Q1 from the interval [ Q1-1, Q1-2], returning to the step 1-2 until the corresponding tailing slurry conveying amount Q1-3 is found when the solid content is equal to 200 mg/L, and calculating the optimal dilution concentration according to Q1-3 and Q2;
2-1, setting a plurality of groups of different flocculant solution conveying amounts Q3, fixed tailing slurry conveying amounts Q1-3 and fixed dilution water amounts Q2;
2-2, respectively carrying out the following operations for different flocculant solution conveying amounts Q3: respectively putting tailing slurry, dilution water and a flocculating agent into a flocculation mixing system according to the current Q1-3, Q2 and Q3, then conveying the mixed liquid into one of perspective simulation cylinders for sedimentation, measuring the height of a mud layer and the solid content of overflow water after time T, and measuring the processing capacity value under the condition;
2-3, selecting a flocculant solution conveying amount Q3 corresponding to a perspective simulation cylinder with the lowest mud layer height under the condition that the solid content is less than 200 mg/L as an optimal flocculant using amount Q3-1;
As a further improvement of the above simulation experiment method, the method further comprises the following steps: the reasonable solids flux of the tailing slurry = (67.9-100 xc)/22.64 is calculated by sampling the bottommost underflow concentration c through the first bottomend discharge valve.
As a further improvement of the simulation experiment method:
further comprising the following steps of 5, obtaining the relation between the height of the mud layer and the pressure value: obtaining the corresponding relation between the height of the mud layer and the concentration of the underflow according to the detection values of the concentration of the underflow at different heights of the mud layer, and then establishing a calculation relation model between the height H of the mud layer and the pressure value P of the height according to the corresponding relation between the concentration of the underflow and the pressure value P of the height: h = (P-P0) (1 + aP) b )/(ρ Sand -1), P is the pressure value at the height, P0 is the pressure value at the bottom of the clean water layer above the mud layer, P Sand Is the density of the silt; substituting a plurality of groups of mud layer heights H and pressure values P of the heights into the calculation model in the experimental process to obtain values of parameters a and b corresponding to the current tailings; the height of the mud layer is relative to the height of the bottommost end of the mud layer;
and 6, dynamically detecting and sampling to obtain the following fitting calculation formula according to the relation between the bottom-most underflow concentration c and the total height h of the mud layer:
h=2.74*(1/c-1) 1.6 +21.88*(1/c-1) -0.6 -33.32 。
compared with the prior art, the invention has the following beneficial effects: (1) The system adopts a structure of a plurality of parallel perspective simulation cylinders, a plurality of sampling valves are arranged on the cylinder wall along the height direction, synchronous sedimentation can be realized, sampling can be carried out from different heights, the whole process can be observed and recorded, the system is visual and obvious in effect, flocculation sedimentation experimental research under the conditions of different tailing slurries and different flocculants of a gold mine can be provided, and underflow concentration tests with different gradients and dynamic flocculation sedimentation simulation experiments with different longitudinal sections are realized; (2) The invention achieves the purpose of detecting the solid content by detecting the turbidity of the overflow water, and the accuracy and the efficiency are obviously improved; (3) By adjusting the sampling valve, the heights of mud layers in all the perspective simulation cylinders can be ensured to be consistent with each other, and the underflow concentration detection in the dynamic feeding and discharging process is realized; (4) The invention can use a plurality of perspective simulation cylinders to settle according to different dilution concentrations or flocculant use amounts, adjust the ore pulp dilution concentration and the flocculant use amount in real time and quickly obtain the optimal ore pulp dilution concentration and the optimal flocculant use amount; (5) The invention also provides a calculation model of the solid flux, a calculation model of the relation between the height of the mud layer and the pressure value, and a calculation relation model of the underflow concentration at the bottommost end and the total height of the mud layer, provides accurate experimental data and technical parameters for the design of a tailing slurry thickening and dewatering system in mine filling operation, and also provides an efficient and convenient flocculation and sedimentation experimental method for laboratory experiments.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the system;
figure 2 is a top view of the tailing slurry surge tank, central feed barrel, diverter tube and see-through simulation barrel section.
In the figure:
1. a stirring tank; 2. a first peristaltic pump; 3. a first flow meter; 4. a branch pipe; 5. a stirring barrel; 6. a second peristaltic pump; 7. a second flow meter; 8. a tailing slurry buffer tank; 9. a central feed barrel; 10. a shunt tube; 11. a perspective simulation cylinder; 12. an overflow water discharge valve; 13. a sampling valve; 14. a turbidity meter; 15. an overflow water collecting tank; 16. a data transmission signal line; 17. a mobile platform; 18. a first bottom discharge valve; 19. a second bottom end drain valve; 20. a sedimentation tank; 21. a computer; 22. a data acquisition instrument; 23. an underflow pump; 24. a first discharge valve; 25. a second discharge valve; 26. a submersible pump; 27. a third flow meter; 28. and (4) controlling the valve.
Detailed Description
The technical scheme of the invention is explained in detail in the following with the accompanying drawings:
referring to fig. 1 and 2, a gold mine tailing slurry dynamic flocculation sedimentation simulation experiment system comprises a tailing slurry preparation and conveying system, a flocculant preparation and conveying system, a flocculation mixing system and a perspective simulation system. The tailing slurry preparing and conveying system and the flocculating agent preparing and conveying system are respectively communicated with the flocculation mixing system, and the flocculation mixing system is communicated with the perspective simulation system.
Specifically, the flocculant preparation conveying system comprises an agitation tank 1, a first peristaltic pump 2 and a first flow meter 3. The output end of the stirring tank 1 is communicated with the flocculation mixing system through a flocculant conveying pipeline; the first peristaltic pump 2 and the first flow meter 3 are both arranged on the flocculant conveying pipeline.
The tailing pulp preparation and conveying system comprises a stirring barrel 5, a second peristaltic pump 6, a second flow meter 7 and a tailing pulp buffer tank 8. The output of agitator 5 pass through tailing pulp delivery line with tailing pulp buffer tank 8 is linked together, second peristaltic pump 6 and second flowmeter 7 all set up on tailing pulp delivery line, tailing pulp buffer tank 8 the output with flocculation compounding system is linked together.
The flocculation mixing system comprises a branch pipe 4 and a central feed cylinder 9. The branched pipes 4 are distributed above the central feed cylinder 9 uniformly, the upper ends of the branched pipes 4 are connected with the flocculating agent conveying pipeline respectively, and flocculating agent solution can be uniformly put into the central feed cylinder 9.
The output end of the tailing slurry buffer tank 8 is arranged on the side wall of the central feed cylinder 9, and tailing slurry is conveyed into the central feed cylinder 9 along the tangential direction of the central feed cylinder 9.
The perspective simulation system comprises a plurality of perspective simulation cylinders 11 which are arranged in parallel. The perspective emulation cylinder 11 is mounted on a moving platform 17. The output end of the flocculation mixing system is respectively connected with the top end of each perspective simulation cylinder 11 through a shunt pipe 10 which is arranged in parallel, and each shunt pipe 10 is respectively provided with a control valve 28.
The height of the perspective simulation barrel 11 is larger than 2m, and height scales are marked on the barrel wall. The wall of each perspective simulation cylinder 11 is also provided with a plurality of sampling valves 13 arranged along the height direction. In this embodiment, the diameter of the perspective simulation cylinder 11 is 0.3m, the height thereof is 2.5m, and the distance between the sampling valves 13 is 0.3m.
The upper end of each perspective simulation cylinder 11 is provided with an overflow water discharge valve 12, and in the embodiment, the distance between the overflow water discharge valve 12 and the top is 0.3m. Each overflow water discharge valve 12 is connected to an overflow water collecting tank 15 through an overflow water pipeline, and a turbidity meter 14 for detecting the solid content of the overflow water is further arranged in the overflow water collecting tank 15. By detecting the turbidity of the overflow water, the solid content of the overflow water can be measured.
The system also comprises a dilution water conveying pipeline, wherein the inlet end of the dilution water conveying pipeline is communicated with the overflow water collecting tank 15, and the outlet end of the dilution water conveying pipeline is communicated with the tailing slurry preparation conveying system and is used for adding overflow water into tailing slurry. A submersible pump 26 and a third flow meter 27 are also arranged on the dilution water conveying pipeline. The submersible pump 26 is used to deliver overflow water to the tailing slurry buffer tank 8 to dilute the tailing slurry. The bottom of the overflow water collecting tank 15 is provided with a first drain valve 24.
Further, the bottommost end of each perspective simulation cylinder 11 is respectively provided with a first bottom end discharge valve 18, and the first bottom end discharge valves 18 are all communicated to the sedimentation tank 20 through bottom end discharge pipelines. The bottom of the settling tank 20 is provided with a second discharge valve 25. The bottom end discharge pipeline is provided with a bottom flow pump 23 and a second bottom end discharge valve 19 positioned between two adjacent first bottom end discharge valves 18. By controlling the opening and closing of the first bottom end discharge valve 18 and the second bottom end discharge valve 19, the mud layer at the bottommost part of a certain perspective simulation cylinder 11 can be sampled independently.
The system also comprises a computer 21, wherein the computer 21 is connected with the electric valves and the detection devices in the tailing slurry preparation and conveying system, the flocculating agent preparation and conveying system, the flocculating and mixing system and the perspective simulation system through a data transmission signal line 16. The computer 21 is used for controlling the stirring speed of the stirring barrel 5 and the stirring tank 1, can control the rotating speed of the corresponding pump according to the flow value of the flow meter on each pipeline, and can also control the opening and closing of each electric valve.
The simulation experiment method based on the system comprises the following steps:
step 1, measuring the optimal dilution concentration of tailing slurry; the method comprises the following specific steps:
1-1, setting a plurality of different tailing slurry conveying amounts Q1 and fixingThe dilution water quantity Q2 and the fixed flocculant solution delivery quantity Q3-0. In this example, 6 sets of Q1 were selected for respectively high yield at 0.03 m, high yield at m, high yield at 0.13 m, high yield at 0.22 m, high yield at 0.37 m, and high yield at 0.67 m, respectively. The concentration of tailing slurry before dilution is 40 percent, and Q2 is 0.3m 3 The concentrations after dilution were 5%, 10%, 15%, 20%, 25%, and 30%, respectively. The concentration of the flocculant solution is 1 per mill. The computer 21 is responsible for adjusting the delivery volume and ensuring uniform stirring.
1-2, respectively carrying out the following operations for different tailing slurry conveying amounts Q1: respectively putting tailing slurry, dilution water and a flocculating agent into a flocculation mixing system according to the current Q1, Q2 and Q3-0, then conveying the mixed liquid into one of perspective simulation cylinders 11 for sedimentation, measuring the solid content of overflow water after time T (usually 1 hour), and measuring the processing capacity value = M/(T S) under the condition, wherein M is the quality of processed tailing (processed ore quantity), and for the use of 0.3M 3 The dilution water/h is diluted from 40% to 5% tailing slurry, M/T = 0.3/(1/5% -1/40%), and the other pairs of concentrations are analogized in turn. T is the settling time and S is the cross-sectional area of the see-through simulation cylinder 11 (0.07065 square meters). In the embodiment, the 1-hour ore treatment amount of 6 groups is 0.02t/h, 0.04t/h,0.07t/h,0.12t/h,0.20t/h and 0.36t/h respectively, and the finally calculated treatment capacity values are 0.24t/m 2 、0.57t/m 2 、1.02t/m 2 、1.70t/m 2 、2.83t/m 2 、5.10t/m 2 。
1-3, selecting a maximum Q1-1 value (0.13 m and corresponding dilution concentration of 15%) under the condition that the solid content is less than 200 mg/L and a minimum Q1-2 value (0.22 m and corresponding dilution concentration of 20%) under the condition that the solid content is more than 200 mg/L, taking a plurality of new tailing slurry conveying amounts Q1 from intervals [ Q1-1 and Q1-2], returning to the step 1-2 until the corresponding tailing slurry conveying amounts Q1-3 are found when the solid content is equal to 200 mg/L, and calculating an optimal dilution concentration (16% in the embodiment) according to Q1-3 and Q2.
2-1, setting a plurality of groups of different flocculant solution conveying amounts Q3, fixed tailing slurry conveying amounts Q1-3 and fixed dilution water amounts Q2.
2-2, respectively carrying out the following operations on different flocculant solution conveying amounts Q3: and respectively putting the tailing slurry, the dilution water and the flocculating agent into a flocculation mixing system according to the current Q1-3, Q2 and Q3, then conveying the mixed liquid into one of the perspective simulation cylinders 11 for sedimentation, measuring the height of a mud layer and the solid content of overflow water after the time T, and measuring the treatment capacity value under the condition.
2-3, selecting the flocculant solution conveying amount Q3 corresponding to the perspective simulation cylinder 11 with the lowest mud layer height under the condition that the solid content is less than 200 mg/L as the optimal flocculant using amount Q3-1.
And 4, sampling the bottommost underflow concentration c through the first bottom discharge valve 18, and calculating the reasonable solid flux of the tailing slurry = (67.9-100 × c)/22.64.
And 5, obtaining the relation between the height of the mud layer and the pressure value: obtaining the corresponding relation between the height of the mud layer and the concentration of the underflow according to the detection values of the concentration of the underflow at different heights of the mud layer, and then establishing a calculation relation model between the height H of the mud layer and the pressure value P of the height according to the corresponding relation between the concentration of the underflow and the pressure value P of the height: h = (P-P0) (1 + aP) b )/(ρ Sand -1), P is the pressure value at the height, P0 is the pressure value at the bottom of the clean water layer above the mud layer, P Sand Is the density of the silt.
Substituting multiple groups of mud layer heights H and pressure values P of the heights in the experimental process into the calculation model to obtain values of parameters a and b corresponding to the current tailings; the mud layer height refers to the height relative to the bottommost end of the mud layer.
Through the calculation model, in an actual mine, the height of a certain position in a mud layer can be calculated by monitoring the pressure of the mud layer of the certain position.
And 6, dynamically detecting and sampling to obtain the following fitting calculation formula according to the relation between the bottom flow concentration c at the bottommost end and the total height h of the mud layer:
h=2.74*(1/c-1) 1.6 +21.88*(1/c-1) -0.6 -33.32。
and h is m.
Through the calculation relation, in an actual mine, the total height of a mud layer can be calculated by monitoring the underflow concentration at the bottommost part of the mud layer.
Claims (10)
1. The utility model provides a gold mine tailing pulp developments flocculation settlement simulation experiment system, includes tailing pulp preparation conveying system, flocculating agent preparation conveying system, flocculation compounding system and perspective simulation system, tailing pulp preparation conveying system and flocculating agent preparation conveying system respectively with flocculation compounding system is linked together, flocculation compounding system is linked together its characterized in that with perspective simulation system: the perspective simulation system comprises a plurality of perspective simulation barrels (11) which are arranged in parallel, the height of each perspective simulation barrel (11) is larger than 2m, and height scales are marked on the barrel wall; the output end of the flocculation mixing system is respectively connected with the top ends of the perspective simulation barrels (11) through shunt tubes (10) which are arranged in parallel, and control valves (28) are respectively arranged on the shunt tubes (10);
the wall of each perspective simulation cylinder (11) is also provided with a plurality of sampling valves (13) which are arranged along the height direction.
2. The dynamic flocculation and sedimentation simulation experiment system for gold mine tailing slurry according to claim 1, characterized in that: the upper end of each perspective simulation cylinder (11) is respectively provided with an overflow water discharge valve (12), each overflow water discharge valve (12) is connected to an overflow water collecting tank (15) through an overflow water pipeline, and a turbidity meter (14) for detecting the solid content of the overflow water is further arranged in the overflow water collecting tank (15).
3. The dynamic flocculation and sedimentation simulation experiment system for gold mine tailing slurry according to claim 2, characterized in that: the system also comprises a dilution water conveying pipeline, wherein the inlet end of the dilution water conveying pipeline is communicated with the overflow water collecting tank (15), and the outlet end of the dilution water conveying pipeline is communicated with the tailing slurry preparation conveying system and is used for adding overflow water into tailing slurry; and a submersible pump (26) and a third flow meter (27) are also arranged on the dilution water conveying pipeline.
4. The dynamic flocculation and sedimentation simulation experiment system for gold mine tailing slurry according to claim 3, characterized in that: the bottommost end of each perspective simulation cylinder (11) is respectively provided with a first bottom end discharge valve (18), and the first bottom end discharge valves (18) are communicated to a sedimentation tank (20) through bottom end discharge pipelines; the bottom end discharge pipeline is provided with a bottom flow pump (23) and a second bottom end discharge valve (19) positioned between two adjacent first bottom end discharge valves (18).
5. The dynamic flocculation and sedimentation simulation experiment system for gold mine tailing slurry according to claim 1, characterized in that: the flocculant preparation conveying system comprises an agitating tank (1), a first peristaltic pump (2) and a first flow meter (3);
the output end of the stirring tank (1) is communicated with the flocculation mixing system through a flocculating agent conveying pipeline; the first peristaltic pump (2) and the first flowmeter (3) are both arranged on the flocculant conveying pipeline;
the tailing slurry preparation and conveying system comprises a stirring barrel (5), a second peristaltic pump (6), a second flowmeter (7) and a tailing slurry buffer tank (8);
the output of agitator (5) pass through tailing pulp pipeline with tailing pulp buffer memory groove (8) are linked together, second peristaltic pump (6) and second flowmeter (7) all set up on tailing pulp pipeline, the output of tailing pulp buffer memory groove (8) with flocculation compounding system is linked together.
6. The dynamic flocculation and sedimentation simulation experiment system for gold mine tailing slurry according to claim 5, characterized in that: the flocculation mixing system comprises a branch pipe (4) and a central feed cylinder (9); the branched pipes (4) are in multiple groups and are uniformly distributed above the central feed cylinder (9), and the upper ends of the branched pipes (4) are respectively connected with the flocculating agent conveying pipeline;
the output end of the tailing slurry buffer tank (8) is arranged on the side wall of the central feeding barrel (9), and tailing slurry is conveyed into the central feeding barrel (9) along the tangential direction of the central feeding barrel (9).
7. The dynamic flocculation and sedimentation simulation experiment system for gold mine tailing slurry according to claim 1, characterized in that: the device is characterized by further comprising a computer (21), wherein the computer (21) is connected with electric valves and detection devices in the tailing pulp preparation and conveying system, the flocculating agent preparation and conveying system, the flocculating and mixing system and the perspective simulation system through data transmission signal lines (16).
8. The simulation experiment method of the gold mine tailing slurry dynamic flocculation sedimentation simulation experiment system according to claim 4, characterized by comprising the following steps:
step 1, measuring the optimal dilution concentration of tailing slurry; the method comprises the following specific steps:
1-1, setting a plurality of groups of different tailing slurry conveying amounts Q1, a fixed dilution water amount Q2 and a fixed flocculant solution conveying amount Q3-0;
1-2, respectively carrying out the following operations for different tailing slurry conveying amounts Q1: respectively putting tailing slurry, dilution water and a flocculating agent into a flocculation mixing system according to the current Q1, Q2 and Q3-0, then conveying the mixed liquid into one perspective simulation cylinder (11) for sedimentation, measuring the solid content of overflow water after time T, and measuring the processing capacity value = M/(T S) under the condition, wherein M is the quality of treated tailings, T is the sedimentation time, and S is the cross-sectional area of the perspective simulation cylinder (11);
1-3, selecting a maximum Q1-1 value of Q1 under the condition that the solid content is less than 200 mg/L and a minimum Q1-2 value of Q1 under the condition that the solid content is more than 200 mg/L, then taking a plurality of new conveying quantities Q1 of tailing slurry from the interval [ Q1-1, Q1-2], returning to the step 1-2 until the corresponding conveying quantities Q1-3 of tailing slurry are found when the solid content is equal to 200 mg/L, and calculating the optimal dilution concentration according to Q1-3 and Q2;
step 2, determining the optimal flocculant dosage; the method comprises the following specific steps:
2-1, setting a plurality of groups of different flocculant solution conveying amounts Q3, fixed tailing slurry conveying amounts Q1-3 and fixed dilution water amounts Q2;
2-2, respectively carrying out the following operations on different flocculant solution conveying amounts Q3: respectively putting tailing slurry, dilution water and a flocculating agent into a flocculation mixing system according to the current Q1-3, Q2 and Q3, then conveying the mixed liquid into one of perspective simulation cylinders (11) for sedimentation, measuring the height of a mud layer and the solid content of overflow water after time T, and measuring the processing capacity value under the condition;
2-3, selecting a flocculant solution conveying capacity Q3 corresponding to the perspective simulation cylinder (11) with the lowest mud layer height under the condition that the solid content is less than 200 mg/L as an optimal flocculant using amount Q3-1;
step 3, simulating a dynamic feeding and discharging process, and detecting the underflow concentrations at different heights; the method comprises the following specific steps: the tailing slurry, the dilution water and the flocculating agent are placed into a flocculating and mixing system according to the tailing slurry conveying amount Q1-3, the dilution water amount Q2 and the flocculating agent solution conveying amount Q3-1, then the mixed liquid is synchronously conveyed into different perspective simulation cylinders (11) for sedimentation, the height of a mud layer in all the perspective simulation cylinders (11) is controlled to be 2m by controlling sampling valves (13) on all the perspective simulation cylinders (11), and then under the condition that the height of the mud layer is not changed, the perspective simulation cylinders (11) respectively select one sampling valve (13) with different heights to perform combined dynamic sampling to obtain the underflow concentrations with different heights.
9. The simulation experiment method of claim 8, further comprising the step of 4: the reasonable solids flux of the tailings slurry = (67.9-100 xc)/22.64 is calculated by sampling the bottommost underflow concentration c through the first bottom discharge valve (18).
10. The simulation experiment method of claim 8, wherein:
further comprising the following steps of 5, obtaining the relation between the height of the mud layer and the pressure value: obtaining the corresponding relation between the height of the mud layer and the concentration of the underflow according to the detection values of the concentration of the underflow at different heights of the mud layer, and then establishing a calculation relation model between the height H of the mud layer and the pressure value P of the height according to the corresponding relation between the concentration of the underflow and the pressure value P of the height: h = (P-P0) (1 + aP) b )/(ρ Sand -1), P is the pressure value at the height, P0 is the pressure value at the bottom of the clean water layer above the mud layer, P Sand Is the density of the silt; substituting a plurality of groups of mud layer heights H and pressure values P of the heights into the calculation model in the experimental process to obtain values of parameters a and b corresponding to the current tailings; the height of the mud layer is relative to the height of the bottommost end of the mud layer;
and 6, dynamically detecting and sampling to obtain the following fitting calculation formula according to the relation between the bottom-most underflow concentration c and the total height h of the mud layer:
h=2.74*(1/c-1) 1.6 +21.88*(1/c-1) -0.6 -33.32 。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210923932.8A CN115138107B (en) | 2022-08-02 | 2022-08-02 | Gold mine tailing pulp dynamic flocculation sedimentation simulation experiment system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210923932.8A CN115138107B (en) | 2022-08-02 | 2022-08-02 | Gold mine tailing pulp dynamic flocculation sedimentation simulation experiment system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115138107A true CN115138107A (en) | 2022-10-04 |
| CN115138107B CN115138107B (en) | 2024-03-12 |
Family
ID=83413480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210923932.8A Active CN115138107B (en) | 2022-08-02 | 2022-08-02 | Gold mine tailing pulp dynamic flocculation sedimentation simulation experiment system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115138107B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000317214A (en) * | 1999-05-12 | 2000-11-21 | Japan Organo Co Ltd | Flocculating and settling device |
| JP2005021742A (en) * | 2003-06-30 | 2005-01-27 | Japan Organo Co Ltd | Flocculation and sedimentation apparatus and controlling method therefor |
| US20100133199A1 (en) * | 2007-08-17 | 2010-06-03 | Hisaaki Ochiai | Method of Flocculating Sedimentation Treatment |
| CA2689684A1 (en) * | 2009-02-02 | 2010-08-02 | Little Moon Ventures Ltd. | Processes for treating oil sands tailings |
| CN202446869U (en) * | 2012-02-27 | 2012-09-26 | 北京科技大学 | Dynamic analog device for tailing thickening |
| CN105834012A (en) * | 2016-05-19 | 2016-08-10 | 中冶北方（大连）工程技术有限公司 | Continuous preparation system and preparation technology of whole grain grade tailing cemented filling slurry |
| KR20160125865A (en) * | 2015-04-22 | 2016-11-01 | 주식회사 모리트워터에너지 | Method and Apparatus for Determining Optimized Injection Rate of Coagulant in Water Treatment System |
| CN108553952A (en) * | 2018-04-13 | 2018-09-21 | 北京科技大学 | The Paste thickener and precisely monitor and regulation and control method that underflow density adaptively regulates and controls |
| CN208893682U (en) * | 2018-09-30 | 2019-05-24 | 深圳市颐泰中和科技有限公司 | A kind of process units of filling in mine aggregate Tailings Slurry |
| CN110542626A (en) * | 2019-09-10 | 2019-12-06 | 北京科技大学 | rheometer-based tailing dewatering performance detection device and use method thereof |
| CN114295553A (en) * | 2022-01-05 | 2022-04-08 | 东北大学 | High-flux coagulation and flocculation experiment system and method |
| CN114620919A (en) * | 2020-12-09 | 2022-06-14 | 景津装备股份有限公司 | Device for dynamically simulating perspective thickening process of thickened state and corresponding slurry thickener |
-
2022
- 2022-08-02 CN CN202210923932.8A patent/CN115138107B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000317214A (en) * | 1999-05-12 | 2000-11-21 | Japan Organo Co Ltd | Flocculating and settling device |
| JP2005021742A (en) * | 2003-06-30 | 2005-01-27 | Japan Organo Co Ltd | Flocculation and sedimentation apparatus and controlling method therefor |
| US20100133199A1 (en) * | 2007-08-17 | 2010-06-03 | Hisaaki Ochiai | Method of Flocculating Sedimentation Treatment |
| CA2689684A1 (en) * | 2009-02-02 | 2010-08-02 | Little Moon Ventures Ltd. | Processes for treating oil sands tailings |
| CN202446869U (en) * | 2012-02-27 | 2012-09-26 | 北京科技大学 | Dynamic analog device for tailing thickening |
| KR20160125865A (en) * | 2015-04-22 | 2016-11-01 | 주식회사 모리트워터에너지 | Method and Apparatus for Determining Optimized Injection Rate of Coagulant in Water Treatment System |
| CN105834012A (en) * | 2016-05-19 | 2016-08-10 | 中冶北方（大连）工程技术有限公司 | Continuous preparation system and preparation technology of whole grain grade tailing cemented filling slurry |
| CN108553952A (en) * | 2018-04-13 | 2018-09-21 | 北京科技大学 | The Paste thickener and precisely monitor and regulation and control method that underflow density adaptively regulates and controls |
| CN208893682U (en) * | 2018-09-30 | 2019-05-24 | 深圳市颐泰中和科技有限公司 | A kind of process units of filling in mine aggregate Tailings Slurry |
| CN110542626A (en) * | 2019-09-10 | 2019-12-06 | 北京科技大学 | rheometer-based tailing dewatering performance detection device and use method thereof |
| CN114620919A (en) * | 2020-12-09 | 2022-06-14 | 景津装备股份有限公司 | Device for dynamically simulating perspective thickening process of thickened state and corresponding slurry thickener |
| CN114295553A (en) * | 2022-01-05 | 2022-04-08 | 东北大学 | High-flux coagulation and flocculation experiment system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115138107B (en) | 2024-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110221087B (en) | System and method for testing automatic suction filtration and dehydration performance of gold mine tailing slurry | |
| CN102445244B (en) | Ore slurry online detection device and multi-parameter detection method | |
| CN105597909B (en) | Primary slime method for floating and device | |
| CN111119990B (en) | Industrial-grade multifunctional paste filling test platform and test method | |
| CN112129917A (en) | High-concentration tailing rheological and flow characteristic testing system and using method thereof | |
| CN105174402B (en) | A kind of automatic adding flocculant system settled for black water and its method | |
| CN205941079U (en) | Invariable useless thick liquid concentration detection device of volume | |
| CN109298025B (en) | Test device and method for monitoring segregation of paste filling slurry in pipeline | |
| CN206321541U (en) | A kind of solid particles sediment speed determinator | |
| CN115138107A (en) | Gold mine tailing slurry dynamic flocculation sedimentation simulation experiment system and method | |
| Hydraulic Plant and Machinery Group et al. | Flow measurement of solid-liquid mixtures using Venturi and other meters | |
| CN206725330U (en) | Evenly mixing device for useless slurry Concentration Testing | |
| CN109061122B (en) | Device and method for measuring slag carrying capacity of slurry | |
| CN106769715A (en) | A kind of solid particles sediment speed determinator and application method | |
| CN209478553U (en) | A kind of slime water deployment device and high concentration slurry water reclaiming system | |
| CN214952075U (en) | Detachable lower scale type bed load sand conveying rate measuring device | |
| CN115266231A (en) | Ore pulp level and concentration sampling monitoring device | |
| CN201671615U (en) | Weighing type oil-well metering separator | |
| CN114441378A (en) | Intelligent concentration pot system and method for detecting concentration of ore pulp in concentrating mill | |
| CN108572056B (en) | River and lake water and sand mutual feedback experiment monitoring system and method under complex conditions | |
| CN105510169A (en) | Small weighing type continuous pulp flow weight concentration measurement device | |
| CN108843315B (en) | Sensing type comprehensive automatic metering device and oil quality calculation method | |
| CN207114371U (en) | A kind of gas-particle two-phase fluidizes bed bed device for measuring viscosity | |
| CN204831966U (en) | But device of real -time supervision ground paste concentration | |
| CN204170854U (en) | Countercurrent flotation experimental provision |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |