CN111350507A - Tailing mining system and method - Google Patents
Tailing mining system and method Download PDFInfo
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- CN111350507A CN111350507A CN202010172913.7A CN202010172913A CN111350507A CN 111350507 A CN111350507 A CN 111350507A CN 202010172913 A CN202010172913 A CN 202010172913A CN 111350507 A CN111350507 A CN 111350507A
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- 238000000034 method Methods 0.000 title claims abstract description 60
- 238000005065 mining Methods 0.000 title description 22
- 239000002002 slurry Substances 0.000 claims abstract description 99
- 238000003756 stirring Methods 0.000 claims abstract description 46
- 238000011084 recovery Methods 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 56
- 239000004576 sand Substances 0.000 claims description 34
- 239000012065 filter cake Substances 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 11
- 239000012535 impurity Substances 0.000 claims description 10
- 239000000047 product Substances 0.000 claims description 10
- 239000011449 brick Substances 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 7
- 230000003139 buffering effect Effects 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- 238000004537 pulping Methods 0.000 claims description 4
- 239000013049 sediment Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/22—Methods of underground mining; Layouts therefor for ores, e.g. mining placers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/06—Transport of mined material at or adjacent to the working face
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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Abstract
The invention discloses a tailing stoping system and a tailing stoping method, which belong to the field of comprehensive utilization of tailings, and comprise a pontoon and a backhoe excavator, and further comprise an ore pulp stirring barrel, a first buffer ore pulp tank, a hydrocyclone and a linear dewatering screen, wherein the backhoe excavator is positioned on one side of a screw feeder, the screw feeder is positioned above the ore pulp stirring barrel, the bottom of the pontoon is provided with a flying mud pump, the flying mud pump is communicated with the ore pulp stirring barrel, the ore pulp stirring barrel is communicated with the first buffer ore pulp tank through a first slurry pump, the first buffer ore pulp tank is communicated with the hydrocyclone through a second slurry pump, and the hydrocyclone is positioned above the linear dewatering screen. The tailings in the closed tailing pond are directly recovered by a dry-method and wet-method combined recovery method, so that the airing time of the traditional dry-method recovery method for the fine-grained tailings which are not completely solidified at the tailing pond tail is reduced, and the cycle of the recovery process is shortened.
Description
Technical Field
The invention belongs to the field of comprehensive utilization of tailings, and particularly relates to a tailing stoping system and a tailing stoping method.
Background
The tailings stockpiled in the tailing pond are the forms of mainly treating the tailings discharged from ore dressing plants at present by mine enterprises in China, and most of the tailings are discharged by a wet method. With the full discharge of the tailings in the tailings pond, the safety hidden trouble and the environmental protection problem after the tailings pond is closed cause certain troubles for government supervision and enterprise management.
After the tailing pond is closed and stops using for many years, the beach surface at the top of the dam is dry, and only a small amount of accumulated water exists at the tail of the pond. And according to the tailing filling and depositing rule, the granularity of the tailings is gradually thinned from the dam crest to the tailing of the reservoir. The tailings at the tail section of the reservoir are difficult to solidify due to too fine granularity, and the drainage at the tail of the reservoir is difficult.
At present, with the environmental protection pressure, the prohibition of the government on the sand collection of the river channel and the increase of the requirement of the market on the building sand, part of tailings which can meet the building sand standard can be comprehensively used for the building sand. The tailing mining is carried out after the tailing pond is closed, the tailing is comprehensively used for building sand, not only can the economic benefit of an enterprise be increased, but also the problems of potential safety hazards and environmental protection faced by the government and the enterprise can be solved.
Disclosure of Invention
The invention aims to: the tailing mining system and method are provided to solve the defect that the tailing mining period is increased due to the fact that air drying is needed in the existing dry-method mining.
The technical scheme adopted by the invention is as follows:
the utility model provides a tailing mining system, includes back shovel excavator and pontoon, still includes ore pulp agitator, first buffering pulp pond, hydrocyclone and straight line dewatering screen, the back shovel excavator is located one side of screw feeder, screw feeder is located the top of ore pulp agitator, the pontoon bottom is provided with the aerodyne slush pump, the aerodyne slush pump with the ore pulp agitator intercommunication, the ore pulp agitator through first sediment stuff pump with first buffering pulp pond intercommunication, first buffering pulp pond through the second sediment stuff pump with hydrocyclone intercommunication, hydrocyclone is located straight line dewatering screen top.
According to the technical scheme, a pontoon is placed at the tail water area of the tailing pond, tailing slurry is conveyed into a slurry stirring barrel at the bank side of the tailing pond through a flying force slurry pump, a steel wire mesh is arranged at the upper part in the slurry stirring barrel and plays a role in filtering sundries, and after filtering and impurity removing, tailings in the slurry stirring barrel are conveyed to a first buffer slurry pond through a first slurry pump, namely wet-process stoping; after the elevation of the beach surface in the water area of the tailings pond and the elevation of the dry beach surface in the area of the tailings pond are larger than 6.0m, a backhoe is matched with a scraper to transport the tailings in the dry beach area to a feeding bin beside the tailings pond, the tailings are mixed by the feeding bin and a screw feeder and then are transported to an ore pulp stirring barrel for slurry making, a discharging port of the feeding bin is communicated with a feeding port of the screw feeder, a discharging port of the screw feeder is communicated with a feeding port of the ore pulp stirring barrel, and after filtering and impurity removing, the tailings in the ore pulp stirring barrel are pumped to a first buffer ore pulp pond through first slag pulp, namely dry stoping; and (3) conveying the tailings which are extracted by the dry method and the wet method to a hydrocyclone for classification in a first buffer slurry pond through the pressure of a second slurry pump, automatically flowing settled sand to the screen surface of a linear dewatering screen for screening, and conveying the products on the screen of the linear dewatering screen to a finished sand yard for building sand. The tailings in the closed tailing pond are directly mined by a mining method combining a dry method and a wet method, so that the airing time of fine-grained tailings which are not completely solidified at the tail of the tailing pond in the traditional dry mining method is reduced, the period of a mining process is shortened, and the defect that the tailing mining period is increased due to the fact that the existing dry mining method needs airing is overcome.
Preferably, a first belt conveyor is arranged on one side below the linear dewatering screen. The sand on the linear dewatering screen is conveyed and concentrated by a first belt conveyor to form finished sand for buildings.
Preferably, the system further comprises a second buffer slurry pool and a filter press, wherein the hydrocyclone and the linear dewatering screen are respectively positioned above the second buffer slurry pool, and the second buffer slurry pool is communicated with the filter press through a third slurry pump. And the overflow of the hydrocyclone and the product screened by the linear dewatering screen automatically flow to a second buffer slurry pool, and are conveyed to a filter press by a third slurry pump, and the obtained filter cake is used for field building, brick making and the like.
More preferably, a second belt conveyor is provided on the lower side of the filter press. Under the action of the filter press, the obtained filter cake is transported and concentrated by a second belt conveyor and is used for field building, brick making and the like.
More preferably, a water return pool is arranged below the filter press. The filtrate flowing out of the filter press is collected in a water return tank as reuse water.
More preferably, the return water pond is communicated with the ore pulp stirring barrel through a clean water pump. The filtrate is used as reuse water and is conveyed into the ore pulp stirring barrel for reuse under the action of a clean water pump.
Preferably, the two sides of the flying force mud pump are respectively provided with an impeller stirrer. The tailings are pulped by a stirring head and two impeller stirrers under the flying force slurry pump, and the pulping concentration is about 30%; and (4) conveying the tailings to a tailing pond bank ore pulp stirring barrel through a flying force mud pump.
A tailing mining method of the system comprises the following steps:
(1) the stoping of the water area and the dry beach area is sequentially carried out, and the stoping is carried out by combining a dry method and a wet method;
(2) the wet-process stoping specifically comprises the following steps: placing a floating pontoon at a tail water area of a tailing pond, conveying tailing slurry into an ore slurry stirring barrel at the bank side of the tailing pond through a flying mud pump after the tailing slurry is made by a stirring head and an impeller stirrer under the flying mud pump, filtering and removing impurities, and conveying the tailing in the ore slurry stirring barrel to a first buffer ore slurry pond through a first slag slurry pump;
(3) the dry-method stoping specifically comprises the following steps: when the elevation of the beach surface in the water area and the elevation of the dry beach surface in the tailing pond area are larger than 6.0m, a back-shovel excavator is matched with a scraper to transport the tailings in the dry beach area to a feeding bin at the bank side of the tailing pond, the tailings are mixed by the feeding bin and a screw feeder and then transported to an ore pulp stirring barrel for pulping, after filtration and impurity removal, the tailings in the ore pulp stirring barrel are pumped to a first buffer ore pulp pond through a first slag pulp pump, and during dry-method stoping, the height difference between the dry beach surface and a water inlet of a culvert in the pond area is always ensured not to be smaller than 5.97 m; mining the dry beach area in a layer mining sequence along the direction vertical to the axis of the dam, wherein the layer thickness is not more than 2.0 m; each layer of sand taking should be excavated from the inside to the outside (dam head) step by step, and the height of the outside and the height of the inside are ensured; one side slope of the dry sand taking method is not steeper than 1: 3.0;
(4) conveying the recovered tailing slurry to a hydrocyclone for classification in a first buffer slurry pool through a second slurry pump under pressure, automatically flowing settled sand to the screen surface of a linear dewatering screen for screening, and conveying products on the screen of the linear dewatering screen to a finished sand storage yard for building sand through a first belt conveyor;
(5) and the overflow of the hydrocyclone and the undersize product of the linear dewatering screen automatically flow to a second buffer slurry pool, the slurry is conveyed to a filter press by a third slurry pump, a filter cake after filter pressing is conveyed to a filter cake storage yard for artificial field building or brick making, water after filter pressing enters a water return pool, and the return water returns to the slurry stirring barrel through a clean water pump for reuse.
Preferably, the concentration of the slurry prepared in the step (2) is 28-32%.
More preferably, the concentration of the slurry produced in step (2) is 30%.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. in the invention, the tailings in the closed tailing pond are directly recovered by a dry-method and wet-method combined recovery method, so that the airing time of the traditional dry-method recovery method for the fine-grained tailings which are not completely solidified at the tailing pond tail is reduced, the cycle of the recovery process is shortened, the time is money, and the efficiency is the technical effect of life;
2. according to the invention, the recovery method combining the dry method and the wet method can fully utilize water in the tail water area of the reservoir, and reduce the water consumption of the new water for subsequent tailing slurrying;
3. the tailings pond tail belongs to slurry with very fine grain size, the water drained from the pond tail is mainly drained out of the pond area through a culvert in a water seepage mode, and the slurry is difficult to seep because the density of the slurry at the pond tail is high.
Drawings
FIG. 1 is a schematic structural diagram of a tailing mining system according to the present invention;
FIG. 2 is a flow diagram of a tailings recovery process of one such system of the present invention;
fig. 3 is a schematic structural diagram of a tailing mining sequence according to the invention.
The labels in the figure are: 1-a back-hoe excavator, 2-a screw feeder, 3-a pontoon, 4-a flying mud pump, 5-a pulp stirring barrel, 6-a first slurry pump, 7-a first buffer slurry pond, 8-a second slurry pump, 9-a hydrocyclone, 10-a linear dewatering screen, 11-a first belt conveyor, 12-a second buffer slurry pond, 13-a third slurry pump, 14-a filter press, 15-a second belt conveyor, 16-a water return pond, 17-a clean water pump, 18-a tailing pond, 19-finished sand, 20-a filter cake and 21-a first mining area.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 1-3, a tailing mining system comprises a backhoe 1 and a pontoon 3, and further comprises an ore pulp stirring barrel 5, a first buffer ore pulp tank 7, a hydrocyclone 9 and a linear dewatering screen 10, wherein the backhoe 1 is located on one side of a screw feeder 2, the screw feeder 2 is located above the ore pulp stirring barrel 5, the bottom of the pontoon 3 is provided with a flying slurry pump 4, the flying slurry pump 4 is communicated with the ore pulp stirring barrel 5, the ore pulp stirring barrel 5 is communicated with the first buffer ore pulp tank 7 through a first slurry pump 6, the first buffer ore pulp tank 7 is communicated with the hydrocyclone 9 through a second slurry pump 8, and the hydrocyclone 9 is located above the linear dewatering screen 10.
According to the technical scheme, a pontoon 3 is placed at the tail water area of a tailing pond 18, tailing slurry is conveyed into a slurry stirring barrel 5 at the bank side of the tailing pond 18 through a flying force slurry pump 4, after filtration and impurity removal, tailings in the slurry stirring barrel 5 are conveyed to a first buffer slurry pond 7 through a first slurry pump 6, namely wet-process extraction; after the elevation of the beach surface in the water area and the elevation of the dry beach surface in the 18 reservoir area of the tailing reservoir are larger than 6.0m, the backhoe excavator 1 is matched with a scraper to transport the tailings in the dry beach area to a feeding bin at the 18 bank side of the tailing reservoir, the tailings are mixed by the feeding bin and a screw feeder 2 and then are transported to an ore pulp stirring barrel 5 for slurry making, after filtration and impurity removal, the tailings in the ore pulp stirring barrel 5 are transported to a first buffer ore pulp pool 7 through a first slag pulp pump 6, namely, dry stoping is carried out; and (3) conveying the tailings which are extracted by the dry method and the wet method to a hydrocyclone 9 for classification in a first buffer slurry pond 7 under the pressure of a second slurry pump 8, automatically flowing settled sand to the screen surface of a linear dewatering screen 10 for screening, and conveying products screened by the linear dewatering screen 10 to a finished sand 19 storage yard for building sand. The tailings in the closed tailing pond 18 are directly recovered by a dry-method and wet-method combined recovery method, so that the airing time of fine-grained tailings which are not completely solidified at the tail of the tailing pond 18 in the traditional dry-method recovery method is reduced, the period of a recovery process is shortened, and the defect that the tailing recovery period is increased due to the need of airing in the existing dry-method recovery is overcome.
Example 2
As shown in fig. 1-2, in the embodiment 1, a first belt conveyor 11 is provided at a lower side of the linear dewatering screen 10.
The sand on the screen of the linear dewatering screen 10 is conveyed by the first belt conveyor 11 and concentrated to form finished sand 19 which is used for building sand.
Example 3
As shown in fig. 1-2, on the basis of embodiment 1, the system further comprises a second buffer slurry pool 12 and a filter press 14, wherein the hydrocyclone 9 and the linear dewatering screen 10 are respectively positioned above the second buffer slurry pool 12, and the second buffer slurry pool 12 is communicated with the filter press 14 through a third slurry pump 13.
The overflow of the hydrocyclone 9 and the products screened by the linear dewatering screen 10 automatically flow to a second buffer slurry pool 12, and are conveyed to a filter press 14 by a third slurry pump 13, and the obtained filter cake 20 is used for field building, brick making and the like.
Example 4
As shown in fig. 1 to 2, in example 3, a second belt conveyor 15 is provided on the lower side of the filter press machine 14.
The resulting filter cake 20 is transported and collected by the second belt conveyor 15 under the action of the filter press 14 for field preparation, brick making, etc.
Example 5
As shown in fig. 1-2, in addition to example 3, a water return tank 16 is provided below the filter press machine 14.
The filtrate from the filter press 14 is collected as recycled water in a collection tank 16.
Example 6
As shown in fig. 1-2, on the basis of the embodiment 5, the water return tank 16 is communicated with the ore pulp stirring barrel 5 through a clean water pump 17.
The filtrate is used as reuse water and is conveyed into the ore pulp stirring barrel 5 for reuse under the action of a clean water pump 17.
Example 7
As shown in fig. 1 to 2, in addition to example 1, impeller agitators are provided on both sides of the flying mud pump 4.
The tailings are pulped by a stirring head and two impeller stirrers under the flying force slurry pump 4, and the pulping concentration is about 30%; tailings are conveyed into a tailing pond 18 bank ore pulp stirring barrel 5 through a flying force mud pump 4.
Example 8
As shown in fig. 1-3, a tailings recovery method of the system comprises the following steps:
(1) the stoping of the water area and the dry beach area is sequentially carried out, and the stoping is carried out by combining a dry method and a wet method;
(2) the wet-process stoping specifically comprises the following steps: placing a floating pontoon 3 at the position of a tail water area of a tailing pond 18, conveying tailing slurry into an ore slurry stirring barrel 5 at the bank side of the tailing pond 18 through a flying mud pump 4 after the tailing slurry is made by a stirring head and an impeller stirrer below the flying mud pump 4, filtering and removing impurities, conveying the tailing slurry in the ore slurry stirring barrel 5 to a first buffer ore slurry pond 7 through a first slurry pump 6, and opening a cover plate of a flood discharge chute with a corresponding height in time along with the reduction of the height during wet stoping so as to facilitate flood discharge;
(3) the dry-method stoping specifically comprises the following steps: when the elevation of the beach surface in the water area and the elevation of the dry beach surface in the 18 reservoir area of the tailing reservoir are larger than 6.0m, the backhoe excavator 1 is matched with a scraper to transport the tailings in the dry beach area to a feeding bin at the 18 bank side of the tailing reservoir, the tailings are mixed by the feeding bin and a screw feeder 2 and then transported to an ore pulp stirring barrel 5 for slurry making, after filtration and impurity removal, the tailings in the ore pulp stirring barrel 5 are sent to a first buffer ore pulp pond 7 through a first slurry pump 6, and during dry-method recovery, the elevation difference between the dry beach surface and the water inlet of the culvert in the reservoir area is always ensured not to be smaller than 5.97 m; mining the dry beach area in a layer mining sequence along the direction vertical to the axis of the dam, wherein the layer thickness is not more than 2.0 m; each layer of sand taking should be excavated from the inside to the outside (dam head) step by step, and the height of the outside and the height of the inside are ensured; one side slope of the dry sand taking method is not steeper than 1: 3.0;
(4) conveying the recovered tailing slurry to a hydrocyclone 9 for classification in a first buffer slurry pool 7 under the pressure of a second slurry pump 8, automatically flowing settled sand to the screen surface of a linear dewatering screen 10 for screening, and conveying products screened by the linear dewatering screen 10 to a finished sand 19 storage yard for building sand through a first belt conveyor 11;
(5) the overflow of the hydrocyclone 9 and the undersize product of the linear dewatering screen 10 automatically flow to a second buffer slurry pool 12, the slurry is sent to a filter press 14 through a third slurry pump 13, a filter cake 20 after filter pressing is sent to a filter cake 20 storage yard for artificial field building or brick making, water after filter pressing enters a water return pool 16, and the return water returns to the ore pulp stirring barrel 5 through a clean water pump 17 for reuse.
Example 9
On the basis of example 8, the concentration of the slurry produced in step (2) is 28-32%.
Example 10
The concentration of the slurry produced in step (2) was 30% based on example 9.
In the technical scheme of the application, in fig. 3, a first mining area 21, namely a reservoir tail water area, is measured in m of labeled elevation, and other dimensions are measured in m; the sand taking sequence of the tailing pond 18 is from the tail of the pond to the dam head, and the tailing recovery is carried out in the sequence of taking sand layer by layer from top to bottom; in the sand taking process, the height difference between the dry beach surface and the water inlet of the culvert in the reservoir area is ensured to be not less than 5.97 m; taking the lowest elevation of the sand beach surface of the tailing pond 18 to the lowest water inlet elevation of a culvert of the tailing pond 18, and not stoping the lower part; the reservoir tail is designed to be a wet-type stoping area along the direction vertical to the axis of the dam according to the actual size range of the reservoir tail water area, and dry-type stoping is adopted in other areas.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a tailing recovery system, includes back shovel excavator (1) and pontoon (3), its characterized in that: still include ore pulp agitator (5), first buffering pulp pond (7), hydraulic cyclone (9) and straight line dewatering screen (10), back shovel excavator (1) is located one side of screw feeder (2), screw feeder (2) are located the top of ore pulp agitator (5), pontoon (3) bottom is provided with flying force slush pump (4), flying force slush pump (4) with ore pulp agitator (5) intercommunication, ore pulp agitator (5) through first sediment stuff pump (6) with first buffering pulp pond (7) intercommunication, first buffering pulp pond (7) through second sediment stuff pump (8) with hydraulic cyclone (9) intercommunication, hydraulic cyclone (9) are located straight line dewatering screen (10) top.
2. The tailings recovery system of claim 1, wherein: one side below the linear dewatering screen (10) is provided with a first belt conveyor (11).
3. The tailings recovery system of claim 1, wherein: the system also comprises a second buffer slurry pool (12) and a filter press (14), wherein the hydrocyclone (9) and the linear dewatering screen (10) are respectively positioned above the second buffer slurry pool (12), and the second buffer slurry pool (12) is communicated with the filter press (14) through a third slurry pump (13).
4. The tailings recovery system of claim 3, wherein: a second belt conveyor (15) is arranged on one side below the filter press (14).
5. The tailings recovery system of claim 3, wherein: a water return pool (16) is arranged below the filter press (14).
6. The tailings recovery system of claim 5, wherein: the water return tank (16) is communicated with the ore pulp stirring barrel (5) through a clean water pump (17).
7. The tailings recovery system of claim 1, wherein: impeller stirrers are respectively arranged on two sides of the flying mud pump (4).
8. A tailings recovery process for a system according to any one of claims 1 to 7, wherein: the method comprises the following steps:
(1) the stoping of the water area and the dry beach area is sequentially carried out, and the stoping is carried out by combining a dry method and a wet method;
(2) the wet-process stoping specifically comprises the following steps: a pontoon (3) is arranged at a water area of the tail of the tailing pond (18), after tailings are slurried by a stirring head and an impeller stirrer under a flying force slurry pump (4), tailing slurry is conveyed into a slurry stirring barrel (5) at the bank side of the tailing pond (18) through the flying force slurry pump (4), and after filtration and impurity removal, tailings in the slurry stirring barrel (5) are conveyed to a first buffer slurry pond (7) through a first slurry pump (6);
(3) the dry-method stoping specifically comprises the following steps: when the elevation of the beach surface in the water area and the elevation of the dry beach surface in the reservoir area of the tailing reservoir (18) are larger than 6.0m, a back-hoe excavator (1) is matched with a scraper to transport the tailings in the dry beach area to a feeding bin at the bank of the tailing reservoir (18), the tailings are mixed by a feeding bin and a screw feeder (2) and then are transported to an ore pulp stirring barrel (5) for pulping, and after filtering and impurity removing, the tailings in the ore pulp stirring barrel (5) are transported to a first buffer ore pulp pool (7) through a first slag pulp pump (6);
(4) conveying the recovered tailing slurry to a hydrocyclone (9) for classification in a first buffer slurry pool (7) through a second slurry pump (8) under pressure, automatically flowing settled sand to the screen surface of a linear dewatering screen (10) for screening, and conveying products screened by the linear dewatering screen (10) to a finished sand (19) storage yard for building sand through a first belt conveyor (11);
(5) and products under the screen of the overflow and linear dewatering screen (10) of the hydrocyclone (9) automatically flow to a second buffer slurry pool (12), slurry is conveyed to a filter press (14) through a third slurry pump (13), filter cakes (20) after filter pressing are conveyed to a filter cake (20) storage yard for artificial field building or brick making, water after filter pressing enters a water return pool (16), and the return water returns to the slurry stirring barrel (5) through a clean water pump (17) for reutilization.
9. The tailings recovery method according to claim 8, wherein: the concentration of the slurry prepared in the step (2) is 28-32%.
10. The tailings recovery method according to claim 9, characterized in that: the concentration of the slurry prepared in the step (2) is 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010172913.7A CN111350507A (en) | 2020-03-13 | 2020-03-13 | Tailing mining system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010172913.7A CN111350507A (en) | 2020-03-13 | 2020-03-13 | Tailing mining system and method |
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| CN111350507A true CN111350507A (en) | 2020-06-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863931A (en) * | 2021-11-04 | 2021-12-31 | 中冶沈勘秦皇岛工程设计研究总院有限公司 | Tailing stoping method for fine-grained sludge area at tailings of reservoir |
| CN114278379A (en) * | 2021-12-27 | 2022-04-05 | 江苏昌泰建设工程有限公司 | Tailing recovery method |
| CN114853420A (en) * | 2022-05-10 | 2022-08-05 | 中冶沈勘工程技术有限公司 | Process method for recovery and comprehensive utilization of iron-containing tailings pond |
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2020
- 2020-03-13 CN CN202010172913.7A patent/CN111350507A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863931A (en) * | 2021-11-04 | 2021-12-31 | 中冶沈勘秦皇岛工程设计研究总院有限公司 | Tailing stoping method for fine-grained sludge area at tailings of reservoir |
| CN114278379A (en) * | 2021-12-27 | 2022-04-05 | 江苏昌泰建设工程有限公司 | Tailing recovery method |
| CN114278379B (en) * | 2021-12-27 | 2023-02-17 | 江苏昌泰建设工程有限公司 | Tailing recovery method |
| CN114853420A (en) * | 2022-05-10 | 2022-08-05 | 中冶沈勘工程技术有限公司 | Process method for recovery and comprehensive utilization of iron-containing tailings pond |
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