CN216894514U - Tailing graded recombination reconstructed slurry cementing filling equipment - Google Patents
Tailing graded recombination reconstructed slurry cementing filling equipment Download PDFInfo
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- CN216894514U CN216894514U CN202122977239.2U CN202122977239U CN216894514U CN 216894514 U CN216894514 U CN 216894514U CN 202122977239 U CN202122977239 U CN 202122977239U CN 216894514 U CN216894514 U CN 216894514U
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Abstract
The utility model discloses tailing grading, recombining and reconstructing slurry cementing and filling equipment, which comprises a tailing grading device, a coarse tailing slurry dehydration device and a fine tailing slurry concentration metering and feeding device; the fine tail mortar dense metering and feeding device comprises a deep cone thickener; the tailing discharging end of the coarse tailing mortar dehydrating device is connected with a dry sand metering and feeding device, and the dehydrating overflow end of the coarse tailing mortar dehydrating device is connected with a deep cone thickener; the underflow concentration measuring and feeding device, the concentration adjusting water adding device, the dry sand measuring and feeding device and the cement measuring and feeding device are connected with the filling slurry preparing and conveying device and the automatic control device so as to realize accurate regulation and control of multi-component blanking of the filling slurry. Through the mode, the full tailings are subjected to multiple grading treatments, dynamic metering blanking of each preparation component of the filling slurry is realized, the concentration of the tailing filling slurry is accurately regulated, and zero emission of the tailings of the plant selection is realized.
Description
Technical Field
The utility model relates to the technical field of mine filling, in particular to tailing grading, recombining and grouting cementing filling equipment.
Background
With the national importance of safety and environmental protection of mine tailing ponds, the storage capacity of old tailing ponds is continuously reduced, and new tailing ponds cannot be built, so that the development of industrial and mining enterprises in China is greatly influenced. Therefore, the full tailings filling process capable of realizing zero tailing discharge is more and more favored by mine enterprises, and the core of full tailings filling is tailing concentration. At present, the mainstream tailing thickening technology comprises the following steps: a deep cone thickening process, a tailing filter pressing process and a vertical sand silo thickening process.
These several processes suffer from various drawbacks. Specifically, a deep cone thickening process is adopted, the bottom flow fluctuation of a deep cone thickener is large, and the filling slurry concentration is influenced; and when the deep cone thickener is used for treating the full tailings with thicker grain diameter, the rake is easy to press, and the influence on the mine production is large. By adopting the tailing filter pressing process, when the content of fine-particle tailing is high during the tailing filter pressing, the viscosity of the tailing filter cake is high, and the tailing is easy to form arch in the proportioning bin during the tailing feeding so that the tailing feeding is not smooth. Meanwhile, in a filling slurry preparation and conveying system, because tailing filter cake viscosity is high and tailing block masses are not easy to disperse and homogenize, the slurry preparation quality is poor, and the filling quality is further influenced. The vertical sand silo thickening process is adopted, overflow water of the sand silo has the concentration of at least 0.5%, a factory can not be recycled, full tailing filling in the true sense can not be realized, the natural settling concentration and the pulping time of tailing are long, and continuous filling of a filling station can be realized only by matching a plurality of vertical sand silos at the same time.
The prior art provides a full tailings slurry filling system of low density high strength, including tailings enrichment facility, cement add device, transfer thick water and add device, ground paste preparation facilities and pipe-line conveying device. The tail sand concentration device, the cement adding device and the concentration adjusting water adding device are respectively connected with the slurry preparation device, and the bottom of the slurry preparation device is connected with the pipeline conveying device. The filling system is also provided with a modified low-density adding device and a modified enhanced adding and mixing device. Wherein, modified low density adds the device and sets up between ground paste preparation facilities and pipeline transportation device, and modified reinforcing adds mixing device and sets up in the pipeline transportation device exit end. This technique achieves the object of low-density, high-resistance conveyance of the filling slurry and defoaming, high-filling. However, the technology directly introduces the mill tailing slurry into the thickener without carrying out grading treatment, the concentration of subsequent filling slurry is greatly influenced by the underflow fluctuation of the thickener, and the conditions of rake pressing, arch forming and the like are easily generated.
Therefore, it is necessary to design a tailing grading, recombining and re-pulping and cementing filling device which has a simple structure, good filling slurry preparation effect, low possibility of rake pressing and arch formation, low production cost and realization of full tailing zero emission.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems, the utility model provides tailing grading and recombining reconstructed slurry cemented filling equipment, which is used for grading the whole tailing, carrying out secondary grading on the graded low-concentration tailing slurry and the graded high-concentration tailing slurry, and then respectively metering and feeding the graded low-concentration tailing slurry and the graded high-concentration tailing slurry, thereby realizing dynamic metering blanking of each preparation component of the filling slurry, accurately regulating and controlling the concentration of the tailing filling slurry, and realizing zero emission of tailing of a selected factory.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a tailing grading, recombining and slurry-reconstruction cementing filling device comprises a tailing grading device for receiving low-concentration tailing slurry of a selected factory, a coarse tailing slurry dehydration device connected with an underflow pipeline of the tailing grading device, and a fine tailing slurry concentration metering feeding device connected with an overflow pipeline of the tailing grading device;
the fine tail mortar concentration metering and feeding device comprises a fine tail mortar concentration device, an underflow concentration metering and feeding device connected with an underflow pipeline of the fine tail mortar concentration device, and a concentration adjusting water adding device connected with an overflow pipeline of the fine tail mortar concentration device; the fine tail mortar thickening device comprises a deep cone thickener and a flocculant dosing machine connected with the deep cone thickener;
the tailing discharging end of the coarse tailing mortar dehydrating device is connected with a dry sand metering and feeding device, and the dehydrating overflow end of the coarse tailing mortar dehydrating device is connected with the deep cone thickener;
the underflow concentration measuring and feeding device, the thickening water adding device, the dry sand measuring and feeding device and the cement measuring and feeding device are all connected with the filling slurry preparing and conveying device and the automatic control device so as to realize accurate regulation and control of blanking formed by filling slurry preparation, and the automatic control device comprises a PLC control device.
Furthermore, the tailing grading device comprises a grading slurry pump for pumping low-concentration tailing slurry of a selected plant and tailing grading equipment connected with the output end of the grading slurry pump; the tailings grading equipment is a spiral classifier, a hydrocyclone or a pyramid pool.
Further, the thickener with the overflow output of tailings classification equipment is connected, underflow concentration measurement feeder include with the underflow slurry pump that the underflow output of thickener is connected, underflow slurry pump through underflow concentration measurement feeder's supporting pipeline with filling slurry preparation is connected with conveyor, be provided with concentration meter, electric gate valve and thin tail mortar flowmeter on underflow concentration measurement feeder's the supporting pipeline, concentration meter, electric gate valve and thin tail mortar flowmeter all with automatic control device signal connection.
Further, the concentration adjusting water adding device is connected with an overflow output end of the deep cone thickener to receive overflow with the solid content of less than 300ppm in the deep cone thickener;
the concentrated water adjusting adding device comprises an overflow water return pool connected with the overflow output end of the deep cone thickener and a water pump used for pumping liquid in the overflow water return pool, the water pump is connected with the filling slurry preparation and conveying device through a concentrated water adjusting matched pipeline, a concentrated water adjusting matched valve and a water flowmeter are arranged on the concentrated water adjusting matched pipeline, and the concentrated water adjusting matched valve and the water flowmeter are both in signal connection with the automatic control device.
Furthermore, the coarse tail mortar dehydration device comprises dehydration equipment connected with the underflow output end of the tailing grading equipment and a tailing yard for storing coarse tailings produced by the dehydration equipment, and the overflow output end of the dehydration equipment is connected with the deep cone thickener.
Furthermore, the dry sand metering and feeding device comprises a scraper for conveying coarse tailings in the tailings yard, a proportioning bin for containing the coarse tailings conveyed by the scraper, a belt scale arranged at a discharge opening of the proportioning bin, coarse sand conveying equipment for conveying the coarse tailings weighed by the belt scale, and a collecting hopper arranged at the tail end of the coarse sand conveying equipment; the output end of the material collecting hopper is connected with the filling slurry preparation and conveying device, and the belt weigher and the coarse sand conveying equipment are in signal connection with the automatic control device.
Furthermore, the cement metering and feeding device comprises a cement bin, a steady flow feeder connected with a discharge port of the cement bin, and cement metering equipment connected with an output end of the steady flow feeder, wherein an output end of the cement metering equipment is connected with the filling slurry preparation and conveying device, and the steady flow feeder and the cement metering equipment are in signal connection with the automatic control device.
Further, the filling slurry preparing and conveying device comprises a first section of stirring equipment, a second section of stirring equipment connected with the output end of the first section of stirring equipment, and a filling slurry conveying device connected with the output end of the second section of stirring equipment.
Further, the automatic control device also comprises a control console, and the PLC control equipment presets standard parameters, wherein the standard parameters comprise coarse sand water content, tailing sand thickness ratio, lime-sand ratio, fine mortar flow and filling slurry concentration.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the tailing grading, recombining and grouting cementing filling equipment, fine tailing mortar subjected to grading treatment is input into a deep cone thickener for thickening, and coarse tailing mortar is input into dewatering equipment for dewatering; and the dense fine tailing mortar and the dehydrated coarse tailing are respectively metered and fed, so that the dynamic metering blanking of each preparation component of the filling slurry is realized, and the concentration of the tailing filling slurry is accurately regulated and controlled.
2. According to the tailing grading, recombining and grouting cementing filling equipment, the whole tailing is graded, only the graded fine tailing is conveyed to the thickening equipment for efficient thickening treatment, and the rake pressing phenomenon caused by the thicker dense tailing is effectively avoided; in addition, the thickening mode has lower requirement on the unit processing capacity of the thickening equipment, so that the equivalent amount of tailings generated by the ore dressing plant is processed, the size of the required thickening equipment is greatly reduced, and the investment cost of the thickening equipment can be effectively reduced.
3. According to the tailing grading, recombining and re-pulping, cementing and filling equipment, all tailings are graded, and most of thinner tailings are removed from graded coarse tailings, so that the coarse tailings are easy to dehydrate and high in dehydration efficiency. Meanwhile, because the content of fine particles in the coarse tailings is low, the coarse tailings filter cake after dehydration has low water content, small viscosity and high looseness, the tailings are not easy to arch in a sand silo during proportioning, and are not easy to agglomerate during stirring, so that the problems of difficult blanking and stirring of dehydrated dry sand can be effectively solved.
4. According to the tailing graded and recombined slurry-reconstructed cemented filling equipment, when filling slurry is prepared, dense and fine tailing slurry with the mass concentration of 30-50% and coarse tailing filter cakes with low water content are recombined, the complementation of high and low concentrations of dry and wet materials is realized, the concentration adjusting range during filling slurry preparation is expanded, the influence of the fluctuation of the underflow concentration of the dense equipment on the preparation concentration of the filling slurry is effectively reduced, and stable structural flow filling is realized.
5. According to the tailing grading, recombining and re-pulping cemented filling equipment, coarse tailing after grading, shunting and dewatering is stacked in a tailing yard, and the coarse tailing is used for filling and can be sold to a certain extent according to the filling demand and the demand of a sandstone aggregate market, so that mine tailless discharge is realized, and social, economic and ecological benefits are created for mines.
Drawings
FIG. 1 is a schematic structural diagram of a tailings graded reconstituted slurry cemented filling apparatus of the present invention;
FIG. 2 is a schematic view of the process flow of the tailings graded reconstituted slurry cemented filling apparatus of the present invention;
the parts in the drawings are numbered as follows: 10. a tailings grading device; 11. grading the slurry pump; 12. tailings classification equipment; 20. a coarse tail mortar dehydration device; 21. a dewatering device; 22. a tailing yard; 30. a fine tail mortar thickening device; 31. a deep cone thickener; 32. a flocculating agent dosing machine; 40. a dry sand metering and feeding device; 41. a scraper; 42. a proportioning bin; 43. a belt scale; 44. coarse sand conveying equipment; 45. collecting a hopper; 50. a cement metering and feeding device; 51. a cement bin; 52. a steady flow feeder; 53. cement metering equipment; 60. a thickening water adding device; 61. overflowing and returning to the pool; 62. a water pump; 63. a water flow meter; 64. a valve matched with the concentrated water; 70. a filling slurry preparation and conveying device; 71. a section of stirring equipment; 72. a second stage of stirring equipment; 73. a filling slurry conveying device; 80. an automatic control device; 81. a console; 82. a PLC control device; 90. the underflow concentration metering and feeding device; 91. a underflow slurry pump; 92. a concentration meter; 93. a fine tail mortar flow meter; 94. provided is an electric gate valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not closely related to the present invention are omitted.
In addition, it is also to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
As shown in fig. 1, a tailings graded, recombined and reconstructed slurry cemented filling apparatus 100 includes a tailings grading device 10 for receiving low-concentration tailings from a selected plant, a coarse tailings dewatering device 20 connected to an underflow pipe of the tailings grading device 10, and a fine tailings thickening metering and feeding device connected to an overflow pipe of the tailings grading device 10. The tailings grading device 10 performs grading treatment on the full-tailings mortar to obtain low-concentration graded fine tailings mortar and high-concentration graded coarse tailings mortar. The tailing grading device 10 comprises a grading slurry pump 11 for pumping low-concentration tailing slurry in a selecting factory and tailing grading equipment 12 connected with the output end of the grading slurry pump 11. The tailings classifying equipment 12 is a spiral classifier, a hydrocyclone, a pyramid pool or other classification processing equipment.
As shown in fig. 1, in some embodiments, the fine tail mortar thickening dosing device includes a fine tail mortar thickening device 30, an underflow concentration dosing device 90 connected to an underflow pipe of the fine tail mortar thickening device 30, and a thickening water adding device 60 connected to an overflow pipe of the fine tail mortar thickening device 30. The fine tail mortar thickener 30 comprises a deep cone thickener 31 and a flocculant dosing machine 32 connected with the deep cone thickener 31. The deep cone thickener 31 is connected with the overflow output end of the tailing grading equipment 12 and is connected with the flocculant dosing machine 32, so that the fine tailing mortar is flocculated and settled by the deep cone thickener 31, further thickening treatment is carried out on the fine tailing mortar, and the reliability of the subsequent process is improved.
The tailing discharging end of the coarse tailing mortar dehydration device 20 is connected with a dry sand metering and feeding device 40, and the dehydration overflow end of the coarse tailing mortar dehydration device is connected with a deep cone thickener 31 so as to further perform classification dehydration treatment on the coarse tailing mortar, and perform flocculation sedimentation dehydration treatment on overflow generated by classification dehydration of the coarse sand.
So set up, carry out hierarchical processing with full tailings to only carry out high-efficient dense processing to the fine tailings after grading to deep cone thickener 31, effectively avoid because the thick pressure harrow phenomenon that appears of dense tailings. In addition, the concentration mode has lower requirement on the unit processing capacity of the deep cone thickener 31, so that the required size of the deep cone thickener 31 is greatly reduced when the same amount of tailings generated by a mineral separation plant is processed, and the construction investment cost of the deep cone thickener 31 can be effectively reduced.
As shown in fig. 1, in some embodiments, the underflow consistency metering and feeding device 90 includes an underflow slurry pump 91 connected to the underflow output end of the deep cone thickener 31, and the underflow slurry pump 91 is connected to the filling slurry preparation and conveying device 70 through a pipe fitting to the underflow consistency metering and feeding device 90, so as to pump the fine tail mortar produced by the deep cone thickener 31 to the filling slurry preparation and conveying device 70. The matching pipeline of the underflow concentration measuring and feeding device 90 is provided with a concentration meter 92, an electric gate valve 94 and a fine tail mortar flow meter 93. The concentration meter 92, the electric gate valve 94 and the fine tail mortar flow meter 93 are in signal connection with the automatic control device 80. The concentration meter 92 and the fine tail mortar flow meter 93 monitor the concentration and flow rate of the fine tail mortar and feed back to the automatic control device 80. Meanwhile, the automatic control device 80 integrates the concentration and flow of the fine tail mortar with other received data, and transmits a control signal to the electric gate valve 94 to regulate and control the addition amount of the fine tail mortar, thereby realizing dynamic metering and blanking.
As shown in fig. 1, in some embodiments, a thickening water adding device 60 is connected to the overflow output end of the deep cone thickener 31 to receive the overflow of the deep cone thickener 31 having a solid content of less than 300ppm to adjust the concentration of the slurry after inputting the overflow to the slurry preparation and delivery device 70.
Specifically, the thickening water adding device 60 includes an overflow return tank 61 connected to the overflow output end of the deep cone thickener 31, and a water pump 62 for pumping the liquid in the overflow return tank 61. The water pump 62 is connected to the filling slurry preparation and delivery device 70 through a concentrate adjusting water mating conduit. The concentrated water adjusting supporting pipeline is provided with a concentrated water adjusting supporting valve 64 and a water flow meter 63, and the concentrated water adjusting supporting valve 64 and the water flow meter 63 are in signal connection with the automatic control device 80. The water flow meter 63 monitors the amount of the added thickening water in real time and feeds back the amount to the automatic control device 80. Meanwhile, after integrating the water amount of the concentrated water with other received data, the automatic control device 80 transmits a control signal to the concentrated water matching valve 64 to regulate and control the addition amount of the concentrated water, thereby realizing dynamic metering blanking.
As shown in fig. 1, in some embodiments, the coarse tailings dewatering device 20 includes a dewatering device 21 connected to the underflow output of the tailings classification device 12, and a tailings disposal site 22 for storing coarse tailings produced by the dewatering device 21. The overflow output end of the dewatering equipment 21 is connected with the deep cone thickener 31 so as to inject the fine mortar generated after the coarse tailings are dewatered into the deep cone thickener 31, thereby ensuring zero emission in the production process. The dewatering equipment 21 includes, but is not limited to, high frequency vibrating screens, ceramic filters, and plate and frame filter presses. Particularly, the classified coarse tailings remove most of the finer tailings, so that the coarse tailings are easy to dewater and the dewatering efficiency is high. Meanwhile, because the content of fine particles in the coarse tailings is low, the coarse tailings filter cake after dehydration has low water content, small viscosity and high looseness, the tailings are not easy to arch in a sand silo during proportioning, and are not easy to agglomerate during stirring, so that the problems of difficult blanking and stirring of dehydrated dry sand can be effectively solved.
As shown in fig. 1, in some embodiments, the dry sand metering and feeding device 40 includes a scraper 41 for conveying coarse tailings of the tailings yard 22, a proportioning bin 42 for accommodating coarse tailings conveyed by the scraper 41, a belt scale 43 disposed at a discharge opening of the proportioning bin 42, a coarse sand conveying device 44 for conveying coarse tailings weighed by the belt scale 43, and a collecting hopper 45 disposed at a rear end of the coarse sand conveying device 44. An arch breaking screw is arranged in the burdening bin 42 to prevent dry sand from arching. The output end of the collecting hopper 45 is connected to a filling slurry preparing and conveying device 70. The belt weigher 43 and the coarse sand conveying device 44 are in signal connection with an automatic control device 80. Grit transport apparatus 44 includes, but is not limited to, belts, bucket elevators, scraper conveyors. The belt scale 43 monitors the amount of dry sand added in real time and feeds back to the automatic control device 80. Meanwhile, the automatic control device 80 integrates the addition amount of the dry sand with other received data, and transmits a control signal to the coarse sand conveying equipment 44 to regulate the addition amount of the dry sand and realize dynamic metering blanking.
As shown in fig. 1, in some embodiments, the cement dosing device 50 includes a cement silo 51, a steady flow feeder 52 connected to the outlet of the cement silo 51, and a cement dosing apparatus 53 flexibly connected to the output of the steady flow feeder 52. The cement metering device 53 includes but is not limited to a micro powder scale and a spiral weighing scale. The output end of the cement metering device 53 is flexibly connected with the filling slurry preparation and conveying device 70, and the steady flow feeder 52 and the cement metering device 53 are in signal connection with the automatic control device 80. The cement metering device 53 monitors the amount of cement added in real time and feeds back to the automatic control device 80. Meanwhile, after integrating the addition amount of the cement with other received data, the automatic control device 80 transmits a control signal to the steady flow feeder 52 to regulate the addition amount of the cement, thereby realizing dynamic metering and discharging.
As shown in fig. 1, in some embodiments, fill slurry preparation and delivery apparatus 70 includes a primary stirring device 71, a secondary stirring device 72 connected to an output end of primary stirring device 71, and a fill slurry delivery apparatus 73 connected to an output end of secondary stirring device 72. In particular, the first stage stirring device 71 includes, but is not limited to, a double horizontal shaft paddle type stirrer, a high concentration stirring barrel. The two-stage stirring device 72 includes, but is not limited to, a double horizontal shaft screw type stirrer, a high-concentration stirring barrel, and a high-speed activation stirrer.
With the arrangement, the cement, the graded coarse tailings, the bottom flow of the deep cone thickener 31 and the thickening water obtained by the process are respectively injected into the first-stage stirring device 71 through the dynamic metering modes of the respective systems, and are injected into the second-stage stirring device 72 after being stirred for the first stage by the first-stage stirring device 71. And then, preparing high-concentration tailing filling slurry through two-stage continuous stirring, and pumping or automatically flowing the tailing filling slurry to the underground filling goaf through a filling slurry conveying device 73.
When the gob does not have the self-flow filling condition, the filling slurry conveying device 73 is a filling industrial pump or a drag pump. When the gob has a free-flow filling condition, the filling slurry transport device 73 is a filling drill blanking hopper.
As shown in fig. 1, in some embodiments, the automatic control device 80 includes a console 81 and a PLC control device 82, and the PLC control device 82 presets standard parameters, which include coarse sand water content, tailings thickness ratio, sand-lime ratio, fine mortar flow rate, and filling slurry concentration.
Specifically, the PLC control device 82 receives various types of data detected in real time by the concentration meter 92, the fine tail mortar flow meter 93, the cement metering device 53, the water flow meter 63, and the belt scale 43. When the first-stage stirring device 71 operates, setting the water content of coarse sand to be 10% and the thickness ratio to be 1: 1. the ratio of ash to sand is 1:4, the flow rate of fine mortar, the concentration of filling slurry and other parameters. The PLC control device 82 calculates the specific numerical values of the coarse sand feeding amount, the thickening water addition amount, and the cement feeding amount in combination with the fine mortar concentration measured by the concentration meter 92. Meanwhile, the PLC control device 82 controls the running states of the underflow slurry pump 91, the steady flow feeder 52, the cement metering device 53, the concentrated water adjusting matching valve 64, the belt scale 43, the coarse sand conveying device 44 and the collecting hopper 45, so as to realize the dynamic blanking to the first-stage stirring device 71. When the calculated concentration-adjusting water amount is more than 0, the PLC control device 82 receives the monitoring data of the water flow meter 63 and feeds the monitoring data back to the concentration-adjusting water matching valve 64, so that the concentration of the concentration-adjusting water is increased, and the concentration of the filling slurry is reduced. When the calculated concentration-adjusting water amount is less than 0, the underflow concentration of the deep cone thickener 31 is too low, the filling concentration cannot be adjusted through the concentration-adjusting water, a reasonable thickness ratio is calculated through the underflow concentration parameter and the filling material test result, and meanwhile, the thickness ratio is improved through the PLC control equipment 82, the sand-lime ratio is reduced, and the concentration of the filling slurry is further improved. The PLC control device 82 feeds the adjustment information back to the belt weigher 43, the steady flow feeder 52, the cement metering device 53 and the thickening water matching valve 64, so that the control of the addition amount of coarse sand, the thickening water amount and the cement addition amount is realized, the fine tail mortar is used as liquid for adjusting concentration, and the structural flow filling is realized.
As shown in figure 2, the adopted tailing grading, recombining and regenerating slurry cementing and filling equipment comprises the following steps:
s1, pumping the low-concentration tailing slurry generated by the plant selection to tailing grading equipment 12 through a grading slurry pump 11;
s2, conveying the low-concentration graded fine tail mortar overflow generated by grading to the deep cone thickener 31, and conveying the high-concentration graded coarse tail mortar underflow generated by grading to the dewatering equipment 21;
s3, dehydrating the coarse tailings treated by the dehydration equipment 21, overflowing and conveying the dehydrated coarse tailings to the deep cone thickener 31, and conveying the dehydrated coarse tailings to the tailings yard 22;
s4, adding a flocculant into the deep cone thickener 31 through a flocculant dosing machine 32, and beginning flocculation and sedimentation of the fine tail mortar;
s5, conveying the overflow discharged by the settled deep cone thickener 31 to an overflow return water tank 61, and conveying the overflow to a section of stirring equipment 71 through a water pump 62 and a concentration regulating water matched pipeline; meanwhile, the water flow meter 63 monitors the flow in real time and feeds the flow back to the PLC control equipment 82;
s6, conveying the bottom flow of the deep cone thickener 31 to a first section of stirring equipment 71 through a bottom flow slurry pump 91 and a fine tail mortar thickening matched pipeline; meanwhile, a concentration meter 92 and a fine tail mortar flow meter 93 monitor the concentration and the flow of the fine tail mortar, and feed back to the PLC control device 82;
s7, conveying the coarse tailings stored in the tailings storage yard 22 into a proportioning bin 42 through a scraper 41, discharging the coarse tailings from the proportioning bin 42 to a belt weigher 43, conveying the coarse tailings weighed by the belt weigher 43 to a collecting hopper 45 through a coarse sand conveying device 44, and conveying the coarse tailings to a section of stirring device 71 through the collecting hopper 45; meanwhile, the belt weigher 43 feeds back the weighing data to the PLC control device 82;
s8, conveying the cement in the cement bin 51 to a first section of stirring equipment 71 through a steady flow feeder 52, and simultaneously monitoring the cement blanking amount by a cement metering device 53 and feeding back to a PLC control device 82;
s9, unloading the filling slurry stirred by the first-stage stirring device 71 to a second-stage stirring device 72 for secondary stirring, and simultaneously controlling the real-time working state of each component system by the PLC 82 according to the received data and the concentration of the filling slurry;
and S10, conveying the filling slurry after the stirring by the second-stage stirring equipment 72 to the underground filling goaf.
The above description is only for the purpose of illustrating the technical solutions of the present invention and is not intended to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; all the equivalent structures or equivalent processes performed by using the contents of the specification and the drawings of the utility model, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The tailings graded, recombined and reconstructed slurry cemented filling equipment is characterized by comprising a tailings grading device (10) for receiving low-concentration tailings from a selected plant, a coarse tailings dewatering device (20) connected with an underflow pipeline of the tailings grading device (10), and a fine tailings concentration metering feeding device connected with an overflow pipeline of the tailings grading device (10);
the fine tail mortar concentration metering and feeding device comprises a fine tail mortar concentration device (30), an underflow concentration metering and feeding device (90) connected with an underflow pipeline of the fine tail mortar concentration device (30), and a thickening water adding device (60) connected with an overflow pipeline of the fine tail mortar concentration device (30); the fine tail mortar thickening device (30) comprises a deep cone thickener (31) and a flocculant dosing machine (32) connected with the deep cone thickener (31);
the tailing discharging end of the coarse tailing mortar dehydrating device (20) is connected with a dry sand metering and feeding device (40), and the dehydrating overflow end of the coarse tailing mortar dehydrating device is connected with the deep cone thickener (31);
the underflow concentration measuring and feeding device (90), the concentration adjusting water adding device (60), the dry sand measuring and feeding device (40) and the cement measuring and feeding device (50) are connected with the filling slurry preparation and conveying device (70) and the automatic control device (80) so as to realize accurate regulation and control of blanking formed by filling slurry preparation, and the automatic control device (80) comprises a PLC (programmable logic controller) control device (82).
2. The tailings graded reconstituted slurry cemented filling apparatus according to claim 1, wherein the tailings grading device (10) comprises a graded slurry pump (11) for pumping low concentration tailings slurry from a selected plant, a tailings grading apparatus (12) connected to an output end of the graded slurry pump (11); the tailings classification equipment (12) is a spiral classifier, a hydrocyclone or a pyramid pool.
3. The tailings graded and recombined reconstructed slurry cemented filling apparatus according to claim 2, the deep cone thickener (31) is connected with the overflow output end of the tailing grading equipment (12), the underflow concentration metering and feeding device (90) comprises an underflow slurry pump (91) connected with the underflow output end of the deep cone thickener (31), the underflow slurry pump (91) is connected with the filling slurry preparation and conveying device (70) through a matched pipeline of the underflow concentration measurement feeding device (90), a concentration meter (92), an electric gate valve (94) and a fine tail mortar flow meter (93) are arranged on a matched pipeline of the underflow concentration metering and feeding device (90), the concentration meter (92), the electric gate valve (94) and the fine tail mortar flow meter (93) are in signal connection with the automatic control device (80).
4. The tailings graded and recombined reconstituted slurry cementing and filling equipment according to claim 3, wherein the thickening water adding device (60) is connected with an overflow output end of the deep cone thickener (31) to receive overflow with a solid content of less than 300ppm in the deep cone thickener (31);
transfer dense water to add device (60) include with overflow backwater pond (61) that the overflow output of deep cone thickener (31) is connected and be used for the pump sending water pump (62) of the liquid in overflow backwater pond (61), water pump (62) through transfer dense water supporting pipeline with filling ground paste preparation is connected with conveyor (70), be provided with on the transfer dense water supporting pipeline and transfer dense water supporting valve (64) and water flowmeter (63), transfer dense water supporting valve (64) and water flowmeter (63) all with automatic control device (80) signal connection.
5. The tailings graded and recombined reconstructed slurry cementing and filling equipment according to claim 4, wherein the coarse tailings dewatering device (20) comprises a dewatering equipment (21) connected with the underflow output end of the tailings grading equipment (12), a tailings yard (22) for storing coarse tailings produced by the dewatering equipment (21), and the overflow output end of the dewatering equipment (21) is connected with the deep cone thickener (31).
6. The tailings graded and recombined reconstructed slurry cemented filling apparatus according to claim 5, wherein the dry sand metering and feeding device (40) comprises a scraper (41) for conveying coarse tailings of the tailings yard (22), a proportioning bin (42) for accommodating coarse tailings conveyed by the scraper (41), a belt scale (43) provided at a discharge opening of the proportioning bin (42), a coarse sand conveying apparatus (44) for conveying coarse tailings weighed by the belt scale (43), and a gathering hopper (45) provided at a tail end of the coarse sand conveying apparatus (44); the output end of the material collecting hopper (45) is connected with the filling slurry preparation and conveying device (70), and the belt weigher (43) and the coarse sand conveying equipment (44) are in signal connection with the automatic control device (80).
7. The tailings graded and recombined reconstituted slurry cemented filling apparatus according to claim 1, wherein the cement metering and feeding device (50) comprises a cement bin (51), a steady flow feeder (52) connected with a discharge port of the cement bin (51), and a cement metering device (53) connected with an output end of the steady flow feeder (52), an output end of the cement metering device (53) is connected with the filling slurry preparation and conveying device (70), and the steady flow feeder (52) and the cement metering device (53) are in signal connection with the automatic control device (80).
8. The tailings graded and recombined reconstructed slurry cemented filling apparatus according to claim 1, wherein the filling slurry preparation and conveying device (70) comprises a first-stage stirring device (71), a second-stage stirring device (72) connected to an output end of the first-stage stirring device (71), and a filling slurry conveying device (73) connected to an output end of the second-stage stirring device (72).
9. The tailings graded reconstituted slurry cemented filling apparatus according to claim 1, wherein the automatic control device (80) further comprises a console (81).
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| CN202122977239.2U CN216894514U (en) | 2021-11-30 | 2021-11-30 | Tailing graded recombination reconstructed slurry cementing filling equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116381209A (en) * | 2023-06-05 | 2023-07-04 | 山东黄金矿业科技有限公司充填工程实验室分公司 | Device for detecting concentration of tailings of thickener and method for regulating and controlling concentration of discharged tailings |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116381209A (en) * | 2023-06-05 | 2023-07-04 | 山东黄金矿业科技有限公司充填工程实验室分公司 | Device for detecting concentration of tailings of thickener and method for regulating and controlling concentration of discharged tailings |
| CN116381209B (en) * | 2023-06-05 | 2023-08-04 | 山东黄金矿业科技有限公司充填工程实验室分公司 | Device for detecting concentration of tailings of thickener and method for regulating and controlling concentration of discharged tailings |
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