CN113513363B - Fine-grain-level high-concentration tailing filling and thickening device - Google Patents
Fine-grain-level high-concentration tailing filling and thickening device Download PDFInfo
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- CN113513363B CN113513363B CN202110979440.6A CN202110979440A CN113513363B CN 113513363 B CN113513363 B CN 113513363B CN 202110979440 A CN202110979440 A CN 202110979440A CN 113513363 B CN113513363 B CN 113513363B
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- 238000011049 filling Methods 0.000 title claims abstract description 42
- 230000008719 thickening Effects 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 434
- 239000002002 slurry Substances 0.000 claims abstract description 151
- 238000004537 pulping Methods 0.000 claims abstract description 26
- 239000002562 thickening agent Substances 0.000 claims abstract description 26
- 238000005507 spraying Methods 0.000 claims abstract description 22
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 239000008394 flocculating agent Substances 0.000 claims abstract description 5
- 239000007921 spray Substances 0.000 claims description 129
- 238000002156 mixing Methods 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 238000011010 flushing procedure Methods 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 238000005520 cutting process Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 7
- 238000005065 mining Methods 0.000 abstract description 2
- 239000004576 sand Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 7
- 238000003825 pressing Methods 0.000 description 7
- 238000004062 sedimentation Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000005243 fluidization Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 238000005429 filling process Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000011859 microparticle Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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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
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
Abstract
The invention discloses a fine-grain-level high-concentration tailing filling and thickening device which comprises a tank body part, a wind-water pulping system, an underflow conveying system, an electric control system, a flocculating agent preparation and addition system and the like, wherein the wind-water pulping system comprises an annular water pipe group and an annular air pipe group, annular water pipes of all layers of the annular water pipe group and annular air pipes of all layers of the annular air pipe group are positioned at different height positions and are distributed in an inverted cone shape, and a plurality of high-pressure rubber water (air) spraying pipes, valves and external water (air) pulping nozzles are connected to the annular water pipes and the annular air pipes of all layers; the annular water pipe is connected with the water supply and drainage main pipe, and the annular air pipe is connected with the water supply and exhaust main pipe. The invention has the advantages of high storage capacity, improved mine mining and charging circulation efficiency, no power component, less fault points, low power consumption and low operation cost; the continuous steady-state slurry discharge for a long time is realized, the stability of technological parameters and the working efficiency of filling operation are improved, the concentration capacity of the thickener is improved, and the continuity of the filling operation of the thickener is ensured.
Description
Technical Field
The invention relates to a fine-grain-level high-concentration tailing filling and thickening device, and belongs to the technical field of tailing treatment.
Background
The traditional mine filling process is to fill coarse-grain tailings into the pit and discharge fine-grain tailings into a tailings pond. The tailing pond occupies a large amount of land, the existing tailing pond is tense in capacity, certain economic burden is brought to enterprises by construction and maintenance of the tailing pond, new tailing pond is difficult to implement, and the problems of ecological environment protection and the like exist. Although the traditional classified coarse tailing cemented filling meets the current production requirement, the potential safety hazard of discharging fine tailings to a tailing pond is huge, and an innovative filling process is urgently needed. The Shandong gold group is used for deeply realizing the ecological civilization construction requirement of the country, the construction of the tailless and waste-free mine is actively promoted, the innovation breakthrough is sought by reverse thinking, the traditional thought is overturned by the 'fine-fraction tailings are used for underground filling and coarse-fraction tailings are comprehensively utilized in recycling', the safety of the coarse tailings discharged to a tailing pond is high, the sand demand in industries such as building materials is large, and the coarse tailings are dehydrated and sold after being treated to have certain market demands. The fine fraction tailings have the characteristics of small particle size, low sedimentation speed, poor thickening effect, low formed underflow mass concentration and the like. At present, most of the existing thickeners are used for preparing the slurry required for filling, the traditional powered efficient thickeners and deep cone thickeners cannot form high-concentration filling slurry, hydraulic oil needs to be replaced regularly, mechanical, hydraulic and electric systems are maintained regularly, the consumption of spare parts and oil quantity is increased, the labor intensity of workers is increased, and the equipment maintenance cost is high. Moreover, the rake pressing accident is easy to cause, the rake pressing is one of the most serious faults of the thickener, the material in the whole concentration tank is required to be cleaned up after the rake pressing, then the production can be recovered after the whole concentration tank is filled with water, each rake pressing accident at least can cause 7-10 days of production stoppage, serious loss is caused to production and operation, and the whole operation rate and the production capacity of a concentrating mill are seriously influenced. With the continuous sedimentation of solid particles in a concentration tank, the concentration of the underflow is higher and higher, the height of a bed layer is higher and higher, and the underflow cannot be discharged in time, so that a harrow pressing accident can be generated. The underflow conveying system of the traditional deep cone thickener is often blocked and unsmooth in the conveying process due to the problems of high concentration of the underflow, poor fluidity and the like, and the conveying effect is seriously influenced. And when the slurry is prepared, the slurry is easy to harden, and the filling operation is greatly influenced. In addition, the slurry in the deep cone thickener is unstable in concentration due to uneven stirring, so that the quality of the underground filling body is unstable, potential safety hazards exist, and great interference is brought to underground operation. If the sand is smoothly filled, the sand is fluidized by concentration adjustment, namely, the sand is weightless and pulped through an activating medium so that the sand can smoothly flow out of the storage bin, and the fluidization is completed by high-pressure water and compressed air sprayed by a filling spray pipe assembly. The arrangement of the wind-water slurry making nozzle of the existing deep cone thickener is unreasonable, so that slurry is easy to harden and block on the groove body of the thickener, and the slurry making nozzle is difficult to replace, so that the slurry making effect is poor, and the maintenance cost is high.
As a key link of a mine filling process, a tailing thickening technology is a difficult point in the field of mine filling, and the invention solves the key technology of concentrating fine-fraction tailings to form high-concentration filling slurry.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a fine-grain-level high-concentration tailing filling and thickening device.
The technical scheme provided by the invention is as follows: the fine-grain-level high-concentration tailing filling and thickening device comprises a groove body, wherein the upper end of the groove body is connected with a bridge frame part, the groove body is fixed on a concrete base, the cone bottom of the groove body is arranged in the concrete base, and a turn-back stair is arranged outside the groove body and the concrete base; the outer side of the cone bottom of the inner tank body part of the concrete base is provided with a wind-water slurry making system, and the concrete base is internally provided with an underflow conveying system and an electric control system, and the wind-water slurry making system is connected with a wind supply system and a water supply system; the electric control system is connected with the wind-water pulping system, the underflow conveying system, the flocculating agent preparation and adding system, the air supply system and the water supply system; the wind-water pulping system is characterized by comprising an annular water pipe group and an annular air pipe group which are arranged on the outer side of the conical bottom of the groove body, wherein the annular water pipe group comprises a plurality of layers of annular water pipes which are parallel to each other, the annular water pipes of all layers are positioned at different height positions and are distributed in an inverted cone shape, a plurality of water spraying pipe groups are connected to the annular water pipes of each layer, each water spraying pipe group comprises a high-pressure rubber water spraying pipe connected with the annular water pipe, a water spraying pipe valve arranged on the high-pressure rubber water spraying pipe and an external water pulping nozzle connected with the end part of the high-pressure rubber water spraying pipe, and the external water pulping nozzle is positioned in the conical bottom and faces the inner cavity of the conical bottom; the annular air pipe group comprises a plurality of layers of annular air pipes which are parallel to each other, the annular air pipes of each layer are positioned at different height positions and distributed in an inverted cone shape, a plurality of air injection pipe groups are connected to the annular air pipes of each layer, each air injection pipe group comprises a high-pressure rubber air injection pipe connected with the annular air pipe, an electromagnetic valve arranged on the high-pressure rubber air injection pipe and an external papermaking slurry nozzle connected with the end part of the high-pressure rubber air injection pipe, and the external papermaking slurry nozzle is positioned in the cone bottom and faces the inner cavity of the cone bottom; the water inlet end of each layer of annular water pipe is connected with a water supply branch pipe, each water supply branch pipe is provided with a first water supply electric butterfly valve and a first water supply check valve, and the water inlet end of each water supply branch pipe is connected with a water supply main pipe; an electromagnetic flowmeter, a second water supply electric butterfly valve, a water supply pressure gauge and a second water supply check valve are sequentially arranged on the water supply main pipe along the water flow direction; the drainage end of the annular water pipe of each layer is connected with a drainage branch pipe, each drainage branch pipe is provided with a drainage electric ball valve, and the drainage end of each drainage branch pipe is connected with a drainage main pipe; the air inlet end of the annular air pipe of each layer is connected with an air supply branch pipe, each air supply branch pipe is provided with a first air supply electric regulating valve and a first air supply check valve, and the air inlet end of each air supply branch pipe is connected with an air supply main pipe; a second air supply electric butterfly valve, an air supply pressure gauge and a second air supply check valve are sequentially arranged on the air supply main pipe along the air flow direction; the exhaust end of the annular air pipe of each layer is connected with an exhaust branch pipe, and each exhaust branch pipe is provided with an exhaust electric ball valve; the exhaust end of each exhaust branch pipe is connected with a water draining main pipe.
Preferably, the annular water pipe is provided with 4 layers, namely an annular water pipe of a first layer, an annular water pipe of a second layer, an annular water pipe of a third layer and an annular water pipe of a fourth layer from top to bottom; the annular air pipe is provided with two layers, namely an upper annular air pipe and a lower annular air pipe from top to bottom; the annular air pipe of upper strata is located the annular water pipe of third layer's below, and the annular air pipe of lower floor is located the annular water pipe of fourth layer's below.
Preferably, the water spray pipe groups on the annular water pipe of the first layer consist of first layer upper water spray pipe groups, first layer middle water spray pipe groups and first layer lower water spray pipe groups with different heights, and the external water slurry making nozzles of each water spray pipe group on the annular water pipe of the first layer are uniformly staggered in the vertical direction and uniformly arranged in the circumferential direction;
the water spray pipes on the annular water pipe of the second layer are composed of second-layer upper water spray pipes and second-layer lower water spray pipes with different heights, and the external water slurry making nozzles of the second-layer upper water spray pipes and the second-layer lower water spray pipes are uniformly staggered in the vertical direction and uniformly arranged in the circumferential direction; the external water slurry making nozzles of the first layer lower water spray pipe group and the external water slurry making nozzles of the second layer upper water spray pipe group are uniformly staggered in the vertical direction;
The water spray pipe groups on the annular water pipe of the third layer consist of third layer upper water spray pipe groups and third layer lower water spray pipe groups with different heights, and the external water slurry making nozzles of the third layer upper water spray pipe groups and the third layer lower water spray pipe groups are uniformly staggered in the vertical direction and uniformly arranged in the circumferential direction; the external water slurry making nozzles of the second layer lower water spray pipe group and the third layer upper water spray pipe group are uniformly staggered in the vertical direction;
the water spray pipe group on the annular water pipe of the fourth layer consists of a fourth layer water spray pipe group with the same height, and external water slurry making nozzles of the fourth layer water spray pipe group are uniformly arranged in the circumferential direction; the external water slurry making nozzles of the third layer lower water spray pipe group and the external water slurry making nozzles of the fourth layer water spray pipe group are uniformly staggered in the vertical direction;
the upper air pipe group and the lower air pipe group are arranged in a staggered manner in the vertical direction; the external air-made slurry nozzles of the upper air-jet pipe group and the external water-made slurry nozzles of the third air-jet pipe group are uniformly staggered at the same height, and the external air-made slurry nozzles of the upper air-jet pipe group and the external water-made slurry nozzles of the third air-jet pipe group are uniformly staggered at the same height;
The air jet pipe groups on the lower annular air pipe consist of two groups of lower air jet pipe groups with the same height and are uniformly arranged in the circumferential direction; the external water slurry making nozzles of the fourth layer of water spray pipe group and the external wind slurry making nozzles of the lower layer of water spray pipe group are uniformly staggered in the vertical direction.
Preferably, the vertical distance between the external water slurry making nozzles of each water spray pipe group on the annular water pipe of the first layer is 300mm to 800mm, and the horizontal distance is 400mm to 1800mm;
the vertical distance between the external water slurry making nozzles of the second layer upper water spray pipe group and the second layer lower water spray pipe group is 300mm to 800mm, and the horizontal distance is 400mm to 1800mm; the vertical distance between the external water slurry making nozzle of the first layer lower water spray pipe group and the external water slurry making nozzle of the second layer upper water spray pipe group is 500mm to 1200mm;
the vertical distance between the external water slurry making nozzles of the third layer upper water spray pipe group and the third layer lower water spray pipe group is 300mm to 800mm, and the horizontal distance is 400mm to 1800mm; the vertical distance between the external water slurry making nozzles of the second layer lower water spray pipe group and the third layer upper water spray pipe group is 500mm to 1200mm;
The horizontal distance between the external water slurry making nozzles of the fourth layer water spray pipe group is 400mm to 1800mm; the vertical distance between the external water slurry making nozzle of the third layer lower water spray pipe group and the external water slurry making nozzle of the fourth layer water spray pipe group is 500mm to 1200mm;
the vertical distance between the external air slurry making nozzles of the upper air pipe group and the lower air pipe group is 300mm to 800mm; the horizontal distance between the external air slurry making nozzles of the two groups of lower air jet pipe groups is 400mm to 1800mm; the vertical distance between the external water pulping nozzle of the fourth layer water spray pipe group and the external air pulping nozzle of the lower layer water spray pipe group is 600mm to 1200mm.
Preferably, the air supply branch pipe of each layer is connected with the water supply branch pipe of the first layer and the water supply branch pipe of the second layer through connecting pipelines, and an electric regulating valve and a check valve are arranged between the water supply branch pipe of the first layer and the water supply branch pipe of the second layer and the connecting pipelines.
Preferably, the underflow conveying system comprises at least 3 pulp conveying pipes, one end of each pulp conveying pipe is connected with a pulp discharging port at the bottom of the cone of the trough body through a underflow slurry pump, the other end of each pulp conveying pipe is connected with a first pulp conveying main pipe, the first pulp conveying main pipe is connected with two paths of pulp conveying branch pipes, each path of pulp conveying branch pipe is provided with a control valve and a concentration slurry pump, each path of pulp conveying branch pipe is connected with a flushing waterway, and the flushing waterway is provided with a control valve; each path of ore pulp conveying branch pipe is connected with a second ore pulp conveying main pipe, the second ore pulp conveying main pipe is sequentially provided with a Na22 concentration meter, an electromagnetic flowmeter and an electric pinch valve, and the second ore pulp conveying main pipe is connected with an ore pulp output pipe connected with an inlet of a filling primary mixer; the water delivery pipeline connected with the production water through the multistage centrifugal pump is sequentially provided with a control valve and a first electromagnetic flowmeter, the water delivery pipeline is respectively connected with a first pulp mixing water way and a second pulp mixing water way, the first pulp mixing water way is connected with a first pulp conveying main pipe, the second pulp mixing water way is connected with a second pulp conveying main pipe, the first pulp mixing water way is provided with a control valve and a pressure gauge, and the second pulp mixing water way is provided with a control valve.
Preferably, the pulp conveying pipes are provided with a first manual ball valve and a first electric gate valve, the pulp conveying branch pipes are provided with a second electric gate valve, a thick slurry pump and a third electric gate valve in sequence, a flushing waterway is connected between the second electric gate valve and the thick slurry pump on each path of pulp conveying branch pipe, and the flushing waterway is provided with a second manual ball valve; the water pipeline is sequentially provided with a check valve, an electric ball valve, a manual ball valve and a first electromagnetic flowmeter, the first slurry mixing waterway is sequentially provided with a first electric regulating valve, a pressure gauge and a first check valve, and the second slurry mixing waterway is sequentially provided with a second electric regulating valve and a second check valve.
Preferably, the groove body part adopts an inverted cone structure and is formed by connecting an upper straight cylinder section, a reducing section, a middle straight cylinder section and a cone bottom into a whole; the bottom of the cone is provided with a slurry discharging port, the bridge frame part is connected with a rotary cutting feeding device through an adjusting screw rod, the rotary cutting feeding device is positioned at the center of the upper part of the groove body, one end of a feeding pipe close to the center of the groove body is tangentially connected with the rotary cutting feeding device, the other end of the feeding pipe is connected with a feeding box, and a vertical baffle is arranged at the inlet of the rotary cutting feeding device; the upper part of the inner part of the tank body is provided with an inclined zigzag overflow tank.
Preferably, the diameter of the upper straight cylinder section is 11m, the diameter of the upper end of the reducing section is 11m, the diameter of the lower end of the reducing section is 8m, the diameter of the middle straight cylinder section is 8m, the diameter of the upper end of the cone bottom is 8m, and the total height of the groove body is 24m.
Preferably, the cone bottom adopts a large-inclination design, and the cone angle of the bottom of the cone bottom is 50-70 degrees.
The invention has the beneficial effects that: the invention is based on gravity sedimentation of tailings, flocculation of microparticles and pulping by wind water, and the fine tailings are flocculated into clusters by adding flocculant to accelerate sedimentation, so that the upper water is clarified, and the solid content of upper overflow water is less than 200ppm, thus the invention can be used as the production water of a concentrating mill. And gradually increasing the concentration of the tail sand at the bottom, and finally obtaining the tail sand slurry meeting the filling requirements. The wind and water are adopted to independently make slurry, the concentration of the bottom flow is high, and the long-time continuous steady-state slurry discharge can be realized. The concentration of the stable discharge of the bottom flow reaches more than 55 percent, and the concentration and the flow of the bottom flow can be automatically regulated according to the process requirements, thereby realizing automatic filling. Meanwhile, the stability of technological parameters such as filling concentration, flow and the like is improved, and the concentration capacity of the unpowered deep cone thickener is improved. Compared with the existing deep cone thickener, the invention has the advantages that: the storage capacity is high, the production buffering is facilitated, the mine mining and filling circulation efficiency is improved, the method is more suitable for fine-fraction tailing thickening treatment, fine-fraction tailing high-concentration filling can be completely realized, the problem of mine fine-fraction tailing discharge is solved, and continuous steady-state slurry discharge of equipment is ensured. When the fine fraction tailings of 3500t/d are treated equally, the floor area of the deep cone thickener is 400m 2 The floor occupies 225m 2 The released floor space can be used for storage of spare part sites and the like. No power component, few fault points, low power consumption and low running cost.
It has the following components:
(1) The groove body is of an all-steel structure, is formed by welding steel plates and sectional materials, is installed by adopting an ear seat type, is fixed on a concrete base by using foundation bolts, is supported by adopting steel plate coiled core columns at the center part, has no power parts, does not have risks of harrow pressing, shaft breaking and the like, and has low failure rate, convenient manufacturing and installation, simple and convenient operation, high efficiency, energy conservation and low maintenance amount;
(2) The trough body adopts an inverted cone structure, the bottom of the cone is provided with a sand outlet, and the invention adopts a unique reducing form, has large treatment capacity, is used for treating fine-fraction tailings, has the treatment capacity of more than 1000t/d, small occupied area, strong energy storage capacity and slurry storage capacity of 1100m, ensures the concentration and dehydration time and the quality of overflow water, and has better buffer adjustment effect on the discontinuity of mineral separation and filling operation and tailing treatment operation. Compared with the tail mortar treatment capacity of the deep cone thickener with the same specification, the storage capacity is improved by 30 percent;
(3) The cone bottom of the tank body part adopts a large inclination angle design, the design is 50-70 degrees, the concentrated ore pulp can automatically slide down at the cone angle of the bottom, long-time backlog consolidation of materials is prevented, and the deep cone has a certain storage function, so that the full compaction of the bottom ore pulp is facilitated, and the concentration of the bottom flow is improved. The formation of high-concentration slurry is facilitated, and smooth discharging is realized; the overflow water has high clarity, the content of suspended matters is less than 200ppm, and the overflow water can be used as circulating process water.
(4) The wind-water slurry making system adopts wind-water independent slurry making, is provided with a plurality of layers of annular water pipes and annular air pipes, and each layer of annular water pipes and annular air pipes are positioned at different height positions and distributed in a reverse taper mode, and nozzles on each layer of annular water pipes and annular air pipes are distributed in a staggered mode. The concentration of the bottom flow is high, and the long-time continuous steady-state slurry discharge can be realized. Meanwhile, the stability of technological parameters such as filling concentration, flow and the like is improved, and the concentration capacity of the unpowered deep cone thickener is improved. The wind-water slurry making system is used for stirring slurry, so that hardening phenomenon is effectively prevented, uniformity of slurry bottom flow is remarkably improved, the problems that the bottom of a deep cone thickener is easy to harden and slurry making concentration is unstable are effectively solved, working efficiency of filling operation is improved, continuity of filling operation of the deep cone thickener is guaranteed, filling progress is enabled to follow stoping progress, and stoping operation efficiency and operation safety are improved.
(5) The underflow conveying system comprises an ore pulp conveying pipeline, a flowmeter, a Na22 concentration meter, a pulp mixing waterway, a flushing waterway, a valve and the like which are connected with the slag pulp pump. The underflow conveying system conveys the thickener underflow ore pulp to the inlet of the filling primary mixer. The underflow ore pulp is conveyed by an ore pulp conveying pipeline, the flow and the concentration of the underflow ore pulp are monitored by a flowmeter and a concentration meter, and a pulp mixing waterway is automatically opened to adjust according to the requirement, so that the required underflow concentration is achieved. And a flushing waterway is arranged, so that backflushing and flushing can be performed, and the smoothness of the pipeline is ensured. By adopting two pulp conveying branch pipes and two thick pulp pumps, the pump flow is 150 m/h, the lift is 30m, the power is 75kW, high-concentration pulp conveying can be performed, the abrasion resistance is realized, and the service life of an overflow part is long; the pumping performance range is wide, the cavitation performance is good, the operation efficiency is high, and the energy is saved. The device has the advantages of avoiding manual misoperation, reducing labor intensity, along with simple equipment maintenance and convenient overhaul, effectively reducing rake resistance pressure at the bottom of the thickener and preventing rake pressing caused by long-time deposition of solid particles in the thickener.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the tank body of the present invention;
FIG. 3 is a schematic diagram of the underflow conveyor system of the present invention;
FIG. 4 is a schematic structural view of the geomantic omen pulping system of the present invention;
FIG. 5 is a schematic view of the structure of the annular water pipe portion of the geomantic omen pulping system of the present invention;
fig. 6 is a schematic structural view of an annular air pipe portion of the geomantic omen pulping system of the present invention.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings:
as shown in fig. 1, the fine-grain-level high-concentration tailing filling and thickening device comprises a tank body part 1, wherein the tank body part 1 is borne by a cylindrical concrete base 10, is fixed on the concrete base 10 by foundation bolts in a bottom bin wall ear seat type fixing mode, the cone bottom of the tank body part 1 is arranged in the concrete base 10, and a turning-back stair 11 is arranged outside the tank body part 1 and the concrete base 10. The outside of the cone bottom of the inner tank body part 1 of the concrete base 10 is provided with a wind-water slurry making system 7, the inside of the concrete base 10 is provided with an underflow conveying system 8 and an electric control system 15, and the wind-water slurry making system 7 is connected with a wind supply system 12 and a water supply system 13. The tank body part 1 is connected with a flocculant preparation and addition system 14, and the flocculant preparation and addition system 14 is used for adding the prepared flocculant into the tank body part 1. The electric control system 15 is connected with the wind-water pulping system 7, the underflow conveying system 8, the flocculating agent preparation and adding system 14, the air supply system 12 and the water supply system 13 to control the actions of the wind-water pulping system and the underflow conveying system. The air supply system 12 adopts a 10 m-long screw air compressor, and the exhaust pressure is 1.0MPa. The water supply 13 employs a 37kW multistage corrosion resistant centrifugal pump.
As shown in fig. 2, the tank body 1 is of an all-steel structure, is formed by welding steel plates and sectional materials, the central part of the tank body is supported by a steel plate rolled core column, the tank body 1 is of an inverted conical structure, and is formed by connecting an upper straight cylinder section 1-1, a variable diameter section 1-2, a middle straight cylinder section 1-3 and a conical bottom 1-4 into a whole in a unique variable diameter mode. The diameter of the upper straight cylinder section 1-1 is 11m, the diameter of the upper end of the variable diameter section 1-2 is 11m, the diameter of the lower end of the variable diameter section 1-2 is 8m, the diameter of the middle straight cylinder section 1-3 is 8m, the diameter of the upper end of the conical bottom 1-4 is 8m, and the total height of the tank body part 1 is 24m. The bottom of the cone is provided with a slurry outlet, the cone bottom adopts a large-inclination design, and the cone angle of the bottom of the cone bottom is 50-70 degrees (preferably 55 degrees). The upper end of the groove body part 1 is connected with the bridge frame part 2, the bridge frame part 2 is connected with the rotary cutting feeding device 3 through the adjusting screw rod 9, the rotary cutting feeding device 3 is positioned in the center of the upper part of the groove body part 1, one end of the feeding pipe 4, which is close to the center of the groove body part 1, is tangentially connected with the rotary cutting feeding device 2, the other end of the feeding pipe is connected with the feeding box 5, and a vertical baffle is arranged at the inlet of the rotary cutting feeding device 3. The upper part of the inside of the tank body part 1 is provided with an inclined zigzag overflow tank 6.
As shown in fig. 3, the underflow conveying system 8 includes at least 3 (3 in this embodiment) pulp conveying pipes 8-1, and each pulp conveying pipe 8-1 is provided with a first manual ball valve 8-2 and a first electric gate valve 8-3; one end of the pulp conveying pipe 8-1 is connected with a pulp discharging port at the bottom of the cone of the tank body part 1 through a bottom flow pulp pump, the other end of the pulp conveying pipe is connected with a first pulp conveying main pipe 8-4, the first pulp conveying main pipe 8-4 is connected with two paths of pulp conveying branch pipes 8-5, each path of pulp conveying branch pipe 8-5 is sequentially provided with a second electric gate valve 8-6, a thick pulp pump 8-7 and a third electric gate valve 8-8, a flushing waterway 8-10 is connected between the second electric gate valve 8-6 and the thick pulp pump 8-7 on each path of pulp conveying branch pipes 8-5, and the flushing waterway 8-10 is provided with a second manual ball valve 8-9. Each ore pulp conveying branch pipe 8-5 is connected with a second ore pulp conveying main pipe 8-11, a Na22 concentration meter 8-12, an electromagnetic flowmeter 8-13 and an electric pinch valve 8-14 are sequentially arranged on the second ore pulp conveying main pipe 8-11, and the second ore pulp conveying main pipe 8-11 is connected with an ore pulp output pipe 8-15 connected with an inlet of a filling primary mixer. The water delivery pipeline 8-17 connected with the production water through the multistage centrifugal pump 8-16 is sequentially provided with a check valve 8-18, an electric ball valve 8-19, a manual ball valve 8-20 and a first electromagnetic flowmeter 8-21, the water delivery pipeline 8-17 is respectively connected with a first pulp mixing waterway 8-22 and a second pulp mixing waterway 8-23, the first pulp mixing waterway 8-22 is connected with the first pulp delivery main 4, the second pulp mixing waterway 8-23 is connected with the second pulp delivery main 8-18-1, the first pulp mixing waterway 8-22 is sequentially provided with a first electric regulating valve 8-24, a pressure gauge 8-25 and a first check valve 8-26, and the second pulp mixing waterway 8-23 is sequentially provided with a second electric regulating valve 8-27 and a second check valve 8-28.
As shown in fig. 4-6, the wind-water pulping system comprises an annular water pipe group and an annular air pipe group which are arranged on the outer side of the conical bottom of the tank body part 1, the annular water pipe group comprises a plurality of layers of annular water pipes 7-1 which are parallel to each other, the annular water pipes 7-1 of each layer are located at different height positions and distributed in an inverted conical mode, a plurality of water spraying pipe groups are connected to the annular water pipes 7-1 of each layer, each water spraying pipe group comprises a high-pressure rubber water spraying pipe 7-2 connected with the annular water pipe 7-1, a water spraying pipe valve 7-4 arranged on the high-pressure rubber water spraying pipe 7-2 and an external water pulping nozzle 7-3 connected with the end part of the high-pressure rubber water spraying pipe 7-2, the external water pulping nozzle 7-3 is located in the conical bottom and faces the inner cavity of the conical bottom, and the water spraying pipe valve 7-4 can adopt a manual ball valve or a miniature electric ball valve according to requirements.
The annular air pipe group comprises a plurality of layers of annular air pipes 7-5 which are parallel to each other, the annular air pipes 7-5 of each layer are located at different height positions and distributed in an inverted cone shape, a plurality of air pipe groups are connected to the annular air pipes 7-5 of each layer, each air pipe group comprises a high-pressure rubber air injection pipe 7-6 connected with the annular air pipe 7-5, an electromagnetic valve 7-28 arranged on the high-pressure rubber air injection pipe 7-6 and an external papermaking slurry nozzle 7-7 connected with the end part of the high-pressure rubber air injection pipe 7-6, and the external papermaking slurry nozzle 7-7 is located in the cone bottom and faces the inner cavity of the cone bottom.
The water inlet end of each layer of annular water pipe 7-1 is connected with a water supply branch pipe 7-8, each water supply branch pipe 7-8 is provided with a first water supply electric butterfly valve 7-9 and a first water supply check valve 7-10, the water inlet end of each water supply branch pipe 7-8 is connected with a water supply main pipe 7-11, and the water supply main pipe 7-11 is connected with a water supply system 13. An electromagnetic flowmeter 7-12, a second water supply electric butterfly valve 7-13, a water supply pressure gauge 7-14 and a second water supply check valve 7-15 are sequentially arranged on the water supply main pipe 7-11 along the water flow direction. The drainage end of the annular water pipe 7-1 of each layer is connected with a drainage branch pipe 7-23, each drainage branch pipe 7-23 is provided with a drainage electric ball valve 7-24, and the drainage end of each drainage branch pipe 7-23 is connected with a drainage main pipe 7-25.
The air inlet end of the annular air pipe 7-5 of each layer is connected with an air supply branch pipe 7-16, each air supply branch pipe 7-16 is provided with a first air supply electric regulating valve 7-17 and a first air supply check valve 7-18, the air inlet end of each air supply branch pipe 7-16 is connected with an air supply main pipe 7-19, and the air supply main pipe 7-19 is connected with an air supply system 12. The air supply main pipe 7-19 is sequentially provided with a second air supply electric butterfly valve 7-20, an air supply pressure gauge 7-21 and a second air supply check valve 7-22 along the air flow direction. The exhaust end of the annular air pipe 7-5 of each layer is connected with an exhaust branch pipe 7-26, and each exhaust branch pipe 7-26 is provided with an exhaust electric ball valve 7-27. The exhaust end of each exhaust branch pipe 7-26 is connected with the drain header pipe 7-25.
The annular water pipe 7-1 in this embodiment is provided with 4 layers, namely, an annular water pipe of a first layer, an annular water pipe of a second layer, an annular water pipe of a third layer and an annular water pipe of a fourth layer from top to bottom.
In this embodiment, the annular air pipe 7-5 is provided with two layers, namely an upper annular air pipe and a lower annular air pipe in sequence from top to bottom. The annular air pipe 7-5 of the upper layer is positioned below the annular water pipe 7-1 of the third layer, and the annular air pipe 7-5 of the lower layer is positioned below the annular water pipe 7-1 of the fourth layer.
The water spray pipe group on the annular water pipe 7-1 of the first layer consists of a first layer upper water spray pipe group, a first layer middle water spray pipe group and a first layer lower water spray pipe group with different heights, the vertical distance between the external water slurry making nozzles of each water spray pipe group on the annular water pipe 7-1 of the first layer is 300mm to 800mm, and the external water slurry making nozzles of the first layer upper water spray pipe group, the first layer middle water spray pipe group and the first layer lower water spray pipe group are uniformly staggered in the vertical direction. The horizontal distance between the external water slurry making nozzles in each water spray pipe group on the annular water pipe 7-1 of the first layer is 400mm to 1800mm and is uniformly arranged in the circumferential direction.
The water spray pipe group on the annular water pipe 7-1 of the second layer consists of a second layer upper water spray pipe group and a second layer lower water spray pipe group with different heights, and the vertical distance between the external water pulping nozzles of the second layer upper water spray pipe group and the second layer lower water spray pipe group is 300mm to 800mm; and are uniformly staggered in the vertical direction. The horizontal distance between the external water slurry making nozzles of the second layer upper water spray pipe group and the second layer lower water spray pipe group is 400mm to 1800mm, and the horizontal distance is uniformly distributed in the circumferential direction. The vertical distance between the external water slurry making nozzles of the first layer lower water spray pipe group on the first layer annular water pipe 7-1 and the external water slurry making nozzles of the second layer upper water spray pipe group on the second layer annular water pipe 7-1 is 500mm to 1200mm, and the external water slurry making nozzles of the first layer lower water spray pipe group and the external water slurry making nozzles of the second layer upper water spray pipe group are uniformly staggered in the vertical direction.
The water spray pipe group on the annular water pipe 7-1 of the third layer consists of a third layer upper water spray pipe group and a third layer lower water spray pipe group with different heights, wherein the external water slurry making nozzles of the third layer upper water spray pipe group are positioned above the annular water pipe of the third layer, the external water slurry making nozzles of the third layer lower water spray pipe group are positioned below the annular water pipe of the third layer, and the vertical distance between the external water slurry making nozzles of the third layer upper water spray pipe group and the third layer lower water spray pipe group is 300mm to 800mm and are uniformly staggered in the vertical direction. The horizontal distance between the external water slurry making nozzles of the third layer upper water spray pipe group and the third layer lower water spray pipe group is 400mm to 1800mm, and the horizontal distance is uniformly distributed in the circumferential direction.
The vertical distance between the external water slurry making nozzles of the second layer lower water spray pipe group on the second layer annular water pipe 7-1 and the external water slurry making nozzles of the third layer upper water spray pipe group on the third layer annular water pipe 7-1 is 500mm to 1200mm, and the external water slurry making nozzles of the second layer lower water spray pipe group and the third layer upper water spray pipe group are uniformly staggered in the vertical direction.
The water spray pipe group on the annular water pipe 7-1 of the fourth layer consists of a water spray pipe group of the fourth layer with the same height, and the horizontal distance between the external water slurry making nozzles of the water spray pipe group of the fourth layer is 400mm to 1800mm and is uniformly distributed in the circumferential direction.
The vertical distance between the external water slurry making nozzles of the third layer lower water spray pipe group on the third layer annular water pipe 7-1 and the external water slurry making nozzles of the fourth layer water spray pipe group on the fourth layer annular water pipe 7-1 is 500mm to 1200mm, and the external water slurry making nozzles of the third layer lower water spray pipe group and the fourth layer water spray pipe group are uniformly staggered in the vertical direction.
The air pipe group on the annular air pipe 7-5 of the upper layer consists of an upper air pipe group and a lower air pipe group of different heights, wherein the external air slurry making nozzles of the upper air pipe group of the upper layer are positioned above the annular air pipe of the upper layer, the external air slurry making nozzles of the lower air pipe group of the upper layer are positioned below the annular air pipe of the upper layer, and the vertical distance between the external air slurry making nozzles of the upper air pipe group of the upper layer and the lower air pipe group of the upper layer is 300mm to 800mm and are uniformly staggered in the vertical direction.
The external air-made slurry nozzles of the upper air-jet pipe group and the external water-made slurry nozzles of the third air-jet pipe group are uniformly staggered at the same height, and the external air-made slurry nozzles of the upper air-jet pipe group and the external water-made slurry nozzles of the third air-jet pipe group are uniformly staggered at the same height.
The air jet pipe group on the annular air pipe 7-5 of the lower layer consists of two groups of air jet pipe groups of the lower layer with the same height, and the air jet pipe groups are uniformly distributed in the circumferential direction. The horizontal distance between the external air-pulping nozzles of the two groups of lower air-jet pipe groups is 400mm to 1800mm.
The vertical distance between the external water slurry making nozzles of the fourth layer water spray pipe group on the fourth layer annular water pipe 7-1 and the external slurry making nozzles of the lower layer air spray pipe group on the lower layer annular air pipe 7-5 is 600mm to 1200mm, and the external water slurry making nozzles of the fourth layer water spray pipe group and the external slurry making nozzles of the lower layer air spray pipe group are uniformly staggered in the vertical direction.
The air supply branch pipes 7-16 of each layer are connected with the water supply branch pipes 7-8 of the first layer and the water supply branch pipes 7-8 of the second layer through connecting pipelines 7-29, electric regulating valves 7-30 and check valves 7-31 are arranged between the water supply branch pipes 7-8 of the first layer and the water supply branch pipes 7-8 of the second layer and the connecting pipelines 7-29, the electric regulating valves 7-30 and the check valves 7-31 are opened when necessary, water inlet valves of the annular water pipes of the first layer and the annular water pipes of the second layer are closed, and water slurry making nozzles on the annular water pipes of the first layer and the annular water pipes of the second layer become wind slurry making nozzles.
Before sand discharge, the second water supply electric butterfly valve, the first water supply electric butterfly valve and the water spray pipe valve of each layer are started, and high-pressure water enters the thickener through a pipeline and a water spray nozzle to activate and make slurry.
And opening the second air supply electric butterfly valve and the first air supply electric butterfly valve of each layer, and enabling high-pressure air to enter the thickener through the air nozzle and to combine with high-pressure water to make slurry. And in the sand discharge process, the first water supply electric butterfly valve and the first air supply electric butterfly valve are controlled and regulated according to the mass concentration condition of the discharged underflow mortar, so that high-pressure air and high-pressure water act on the mortar in the bin.
When the sand discharge is stopped, the water supply electric butterfly valve and the air supply electric butterfly valve are closed, the water spray nozzle and the air spray nozzle stop spraying water and spraying air, and the slurry production is stopped in the sand bin.
When the cyclone classifying overflow device is used, the cyclone classifying overflow device and the raw sand bin overflow device convey ore pulp to the rotary-cut feeding device through the slag pulp pump station, the tangentially fed ore pulp is fully mixed with flocculating agent and dilution water in the rotary-cut feeding device to form floccules, the floccules are evenly scattered around the tank body part in a stable manner with low shearing force and enter a certain depth below the liquid level of the tank body part, natural sedimentation and concentration dehydration are started, the floccules rely on the gravity effect, the bottom of the tank body part is immersed for deep concentration dehydration after the buoyancy of an aqueous medium is overcome, and when the concentration of underflow reaches a certain concentration, an underflow conveying system is started for implementing discharge; the concentrated water (clarified water) flows upwards to the upper part of the tank body to form a clarified layer, and enters the inclined overflow tank through the zigzag overflow weir, and finally enters the circulating water system of the selective plant. After fine-fraction tailings are densely settled in a thickener, a wind-water slurry making system is started, slurry making wind disturbs bottom high-concentration tailings, then the bottom high-concentration tailings are diffused to adjacent areas, and finally a whole plane fluidization layer is formed, when a second electric gate valve 8-6 is opened, a feed inlet area of a slurry conveying pipe 8-1 is presented as a negative pressure area, the fluidization slurry layer is collected in the negative pressure area under the longitudinal pressure of upper concentrated tailings, enters the slurry conveying pipe 8-1, and at the same time, the concentrated tailings in a thickener synchronously fall down, the falling process is continuously fluidized by high-pressure wind when approaching a slurry making tuyere, and then continuously collected into the negative pressure area and discharged through the slurry conveying pipe 8-1, when the discharging process is continuously carried out, wind slurry making is stopped, after that, slurry making (wind slurry making) operation is carried out once every 10 minutes, slurry making is carried out for 1 minute each time, if fine-fraction tailings are densely settled in the thickener for a long time, water slurry making is started, and the fluidization layer is formed, and the slurry is stably discharged continuously.
The invention is based on gravity sedimentation of tailings, flocculation of microparticles and slurry making principle by wind and water, and the fine tailings are flocculated into clusters by adding flocculant to accelerate sedimentation, so that the upper water is clarified, the concentration of the bottom tailings is gradually increased, and finally the tailings slurry meeting filling requirements is obtained.
It should be understood that parts of the present specification not specifically described are prior art. The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the design of the present invention.
Claims (10)
1. The fine-grain-level high-concentration tailing filling and thickening device comprises a groove body, wherein the upper end of the groove body is connected with a bridge frame part, the groove body is fixed on a concrete base, the cone bottom of the groove body is arranged in the concrete base, and a turn-back stair is arranged outside the groove body and the concrete base; the outer side of the cone bottom of the inner tank body part of the concrete base is provided with a wind-water slurry making system, and the concrete base is internally provided with an underflow conveying system and an electric control system, and the wind-water slurry making system is connected with a wind supply system and a water supply system; the electric control system is connected with the wind-water pulping system, the underflow conveying system, the flocculating agent preparation and adding system, the air supply system and the water supply system; the wind-water pulping system is characterized by comprising an annular water pipe group and an annular air pipe group which are arranged on the outer side of the conical bottom of the groove body, wherein the annular water pipe group comprises a plurality of layers of annular water pipes which are parallel to each other, the annular water pipes of all layers are positioned at different height positions and are distributed in an inverted cone shape, a plurality of water spraying pipe groups are connected to the annular water pipes of each layer, each water spraying pipe group comprises a high-pressure rubber water spraying pipe connected with the annular water pipe, a water spraying pipe valve arranged on the high-pressure rubber water spraying pipe and an external water pulping nozzle connected with the end part of the high-pressure rubber water spraying pipe, and the external water pulping nozzle is positioned in the conical bottom and faces the inner cavity of the conical bottom; the annular air pipe group comprises a plurality of layers of annular air pipes which are parallel to each other, the annular air pipes of each layer are positioned at different height positions and distributed in an inverted cone shape, a plurality of air injection pipe groups are connected to the annular air pipes of each layer, each air injection pipe group comprises a high-pressure rubber air injection pipe connected with the annular air pipe, an electromagnetic valve arranged on the high-pressure rubber air injection pipe and an external papermaking slurry nozzle connected with the end part of the high-pressure rubber air injection pipe, and the external papermaking slurry nozzle is positioned in the cone bottom and faces the inner cavity of the cone bottom; the water inlet end of each layer of annular water pipe is connected with a water supply branch pipe, each water supply branch pipe is provided with a first water supply electric butterfly valve and a first water supply check valve, and the water inlet end of each water supply branch pipe is connected with a water supply main pipe; an electromagnetic flowmeter, a second water supply electric butterfly valve, a water supply pressure gauge and a second water supply check valve are sequentially arranged on the water supply main pipe along the water flow direction; the drainage end of the annular water pipe of each layer is connected with a drainage branch pipe, each drainage branch pipe is provided with a drainage electric ball valve, and the drainage end of each drainage branch pipe is connected with a drainage main pipe; the air inlet end of the annular air pipe of each layer is connected with an air supply branch pipe, each air supply branch pipe is provided with a first air supply electric regulating valve and a first air supply check valve, and the air inlet end of each air supply branch pipe is connected with an air supply main pipe; a second air supply electric butterfly valve, an air supply pressure gauge and a second air supply check valve are sequentially arranged on the air supply main pipe along the air flow direction; the exhaust end of the annular air pipe of each layer is connected with an exhaust branch pipe, and each exhaust branch pipe is provided with an exhaust electric ball valve; the exhaust end of each exhaust branch pipe is connected with a water draining main pipe.
2. The fine-grained high-concentration tailing filling and thickening device according to claim 1, wherein the annular water pipes are provided with 4 layers, namely, a first annular water pipe, a second annular water pipe, a third annular water pipe and a fourth annular water pipe in sequence from top to bottom; the annular air pipe is provided with two layers, namely an upper annular air pipe and a lower annular air pipe from top to bottom; the annular air pipe of upper strata is located the annular water pipe of third layer's below, and the annular air pipe of lower floor is located the annular water pipe of fourth layer's below.
3. The fine-grained high concentration tailing filling and thickening device according to claim 2, wherein the water spray pipe groups on the annular water pipe of the first layer consist of first-layer upper water spray pipe groups, first-layer middle water spray pipe groups and first-layer lower water spray pipe groups with different heights, and the external water slurry making nozzles of each water spray pipe group on the annular water pipe of the first layer are uniformly staggered in the vertical direction and uniformly arranged in the circumferential direction;
the water spray pipes on the annular water pipe of the second layer are composed of second-layer upper water spray pipes and second-layer lower water spray pipes with different heights, and the external water slurry making nozzles of the second-layer upper water spray pipes and the second-layer lower water spray pipes are uniformly staggered in the vertical direction and uniformly arranged in the circumferential direction; the external water slurry making nozzles of the first layer lower water spray pipe group and the external water slurry making nozzles of the second layer upper water spray pipe group are uniformly staggered in the vertical direction;
The water spray pipe groups on the annular water pipe of the third layer consist of third layer upper water spray pipe groups and third layer lower water spray pipe groups with different heights, and the external water slurry making nozzles of the third layer upper water spray pipe groups and the third layer lower water spray pipe groups are uniformly staggered in the vertical direction and uniformly arranged in the circumferential direction; the external water slurry making nozzles of the second layer lower water spray pipe group and the third layer upper water spray pipe group are uniformly staggered in the vertical direction;
the water spray pipe group on the annular water pipe of the fourth layer consists of a fourth layer water spray pipe group with the same height, and external water slurry making nozzles of the fourth layer water spray pipe group are uniformly arranged in the circumferential direction; the external water slurry making nozzles of the third layer lower water spray pipe group and the external water slurry making nozzles of the fourth layer water spray pipe group are uniformly staggered in the vertical direction;
the upper air pipe group and the lower air pipe group are arranged in a staggered manner in the vertical direction; the external air-made slurry nozzles of the upper air-jet pipe group and the external water-made slurry nozzles of the third air-jet pipe group are uniformly staggered at the same height, and the external air-made slurry nozzles of the upper air-jet pipe group and the external water-made slurry nozzles of the third air-jet pipe group are uniformly staggered at the same height;
The air jet pipe groups on the lower annular air pipe consist of two groups of lower air jet pipe groups with the same height and are uniformly arranged in the circumferential direction; the external water slurry making nozzles of the fourth layer of water spray pipe group and the external wind slurry making nozzles of the lower layer of water spray pipe group are uniformly staggered in the vertical direction.
4. A fine-grained high concentration tailings packing thickener according to claim 3, wherein the vertical distance between the external water slurry making nozzles of each water spray pipe group on the annular water pipe of the first layer is 300mm to 800mm, and the horizontal distance is 400mm to 1800mm;
the vertical distance between the external water slurry making nozzles of the second layer upper water spray pipe group and the second layer lower water spray pipe group is 300mm to 800mm, and the horizontal distance is 400mm to 1800mm; the vertical distance between the external water slurry making nozzle of the first layer lower water spray pipe group and the external water slurry making nozzle of the second layer upper water spray pipe group is 500mm to 1200mm;
the vertical distance between the external water slurry making nozzles of the third layer upper water spray pipe group and the third layer lower water spray pipe group is 300mm to 800mm, and the horizontal distance is 400mm to 1800mm; the vertical distance between the external water slurry making nozzles of the second layer lower water spray pipe group and the third layer upper water spray pipe group is 500mm to 1200mm;
The horizontal distance between the external water slurry making nozzles of the fourth layer water spray pipe group is 400mm to 1800mm; the vertical distance between the external water slurry making nozzle of the third layer lower water spray pipe group and the external water slurry making nozzle of the fourth layer water spray pipe group is 500mm to 1200mm;
the vertical distance between the external air slurry making nozzles of the upper air pipe group and the lower air pipe group is 300mm to 800mm; the horizontal distance between the external air slurry making nozzles of the two groups of lower air jet pipe groups is 400mm to 1800mm; the vertical distance between the external water pulping nozzle of the fourth layer water spray pipe group and the external air pulping nozzle of the lower layer water spray pipe group is 600mm to 1200mm.
5. A fine-grained high concentration tailing filling and thickening device according to claim 3, wherein the air supply branch pipe of each layer is connected with the water supply branch pipe of the first layer and the water supply branch pipe of the second layer through connecting pipelines, and electric regulating valves and check valves are arranged between the water supply branch pipes of the first layer and the water supply branch pipes of the second layer and the connecting pipelines.
6. The fine-grain-level high-concentration tailing filling and thickening device according to claim 1, wherein the underflow conveying system comprises at least 3 pulp conveying pipes, one end of each pulp conveying pipe is connected with a pulp discharging port at the bottom of a cone of the trough body through a underflow pulp pump, the other end of each pulp conveying pipe is connected with a first pulp conveying main pipe, the first pulp conveying main pipe is connected with two pulp conveying branch pipes, each pulp conveying branch pipe is provided with a control valve and a thickening pump, each pulp conveying branch pipe is connected with a flushing waterway, and the flushing waterway is provided with a control valve; each path of ore pulp conveying branch pipe is connected with a second ore pulp conveying main pipe, the second ore pulp conveying main pipe is sequentially provided with a Na22 concentration meter, an electromagnetic flowmeter and an electric pinch valve, and the second ore pulp conveying main pipe is connected with an ore pulp output pipe connected with an inlet of a filling primary mixer; the water delivery pipeline connected with the production water through the multistage centrifugal pump is sequentially provided with a control valve and a first electromagnetic flowmeter, the water delivery pipeline is respectively connected with a first pulp mixing water way and a second pulp mixing water way, the first pulp mixing water way is connected with a first pulp conveying main pipe, the second pulp mixing water way is connected with a second pulp conveying main pipe, the first pulp mixing water way is provided with a control valve and a pressure gauge, and the second pulp mixing water way is provided with a control valve.
7. The fine-grain-level high-concentration tailing filling and thickening device according to claim 6, wherein the pulp conveying pipes are respectively provided with a first manual ball valve and a first electric gate valve, the pulp conveying branch pipes are respectively provided with a second electric gate valve, a thick slurry pump and a third electric gate valve in sequence, a flushing waterway is connected between the second electric gate valve and the thick slurry pump on each pulp conveying branch pipe, and the flushing waterway is provided with a second manual ball valve; the water pipeline is sequentially provided with a check valve, an electric ball valve, a manual ball valve and a first electromagnetic flowmeter, the first slurry mixing waterway is sequentially provided with a first electric regulating valve, a pressure gauge and a first check valve, and the second slurry mixing waterway is sequentially provided with a second electric regulating valve and a second check valve.
8. The fine-grain-level high-concentration tailing filling and thickening device according to claim 1, wherein the tank body part adopts an inverted cone structure and is formed by connecting an upper straight section, a reducing section, a middle straight section and a cone bottom into a whole; the bottom of the cone is provided with a slurry discharging port, the bridge frame part is connected with a rotary cutting feeding device through an adjusting screw rod, the rotary cutting feeding device is positioned at the center of the upper part of the groove body, one end of a feeding pipe close to the center of the groove body is tangentially connected with the rotary cutting feeding device, the other end of the feeding pipe is connected with a feeding box, and a vertical baffle is arranged at the inlet of the rotary cutting feeding device; the upper part of the inner part of the tank body is provided with an inclined zigzag overflow tank.
9. The fine-grained high concentration tailing filling and thickening device according to claim 8, wherein the diameter of the upper straight barrel section is 11m, the diameter of the upper end of the reducing section is 11m, the diameter of the lower end of the reducing section is 8m, the diameter of the middle straight barrel section is 8m, the diameter of the upper end of the cone bottom is 8m, and the total height of the tank body is 24m.
10. The fine-grained high-concentration tailing filling and thickening device according to claim 8, wherein the cone bottom adopts a large-inclination design, and the cone angle of the cone bottom is 50-70 degrees.
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| CN111749730A (en) * | 2020-07-07 | 2020-10-09 | 山东黄金矿业科技有限公司充填工程实验室分公司 | Thickener wind-water linkage slurry making system and damaged nozzle positioning method based on system |
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2021
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| CA2260604A1 (en) * | 1998-12-31 | 2000-06-30 | Her Majesty In Right Of Canada As Represented By The Minister Of Natural Resources | Apparatus for producing high density slurry and paste backfills |
| CN104696009A (en) * | 2015-03-19 | 2015-06-10 | 华唯金属矿产资源高效循环利用国家工程研究中心有限公司 | Anti-clogging slurry making system of mine filling station and slurry making technique |
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