CN113649398A - Harmless disposal system for mine tailings - Google Patents
Harmless disposal system for mine tailings Download PDFInfo
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- CN113649398A CN113649398A CN202110937134.6A CN202110937134A CN113649398A CN 113649398 A CN113649398 A CN 113649398A CN 202110937134 A CN202110937134 A CN 202110937134A CN 113649398 A CN113649398 A CN 113649398A
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- tailing
- tailings
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- dry sand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/02—Transport of mined mineral in galleries
- E21F13/025—Shuttle cars
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/06—Transport of mined material at or adjacent to the working face
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21F15/06—Filling-up mechanically
Abstract
The invention provides a harmless disposal system for mine tailings, which comprises a dry sand preparation disposal tailing mechanism, a fine grain high-concentration tailing concentration mechanism, a filter cake preparation disposal tailing mechanism, a plate-and-frame filter press, a dry sand preparation disposal tailing mechanism and a dry sand preparation disposal tailing mechanism, wherein the dry sand preparation disposal tailing mechanism is used for pumping whole tailing slurry of a plant selection to a swirler for classification and then dehydrating the whole tailing slurry through a high-frequency vibration dewatering screen, the fine grain high-concentration tailing concentration mechanism is used for mixing overflow of the swirler and whole tailing slurry of the plant selection with water and then flowing to a paste thickener for concentration to obtain fine grain high-concentration tailing, a part of fine grain high-concentration tailing is subjected to filter pressing and dehydration by the plate-and-frame filter press to obtain tailing filter cakes, and the other part of fine-grain high-concentration tailings is used as filling aggregate, cement is used as a cementing material, and the mixture is stirred in a double-shaft horizontal stirring tank and a strong stirring barrel and then is conveyed to an underground goaf through a filling pump to carry out fine-grain tailing cemented filling to prepare a fine-grain tailing cemented filling body treatment tailing mechanism. The method has three tailings disposal modes of preparing dry sand, filter cakes and tailing cemented filling bodies, and meets the requirements of green mine construction.
Description
Technical Field
The invention relates to the technical field of harmless treatment of tailings and comprehensive utilization of tailings, in particular to a harmless treatment system for mine tailings.
Background
The conventional wet-discharge tailing storage has the safety problem in a tailing dam, and the construction of the tailing storage is limited by terrain conditions, and the like, and meanwhile, the wet-discharge tailing storage is not beneficial to the recovery of tailing resources. The tailings pond has the potential risk of dam collapse along with the increase of the service life, so how to effectively utilize resources to prolong the service life of the tailings pond is an urgent problem faced by many old mine enterprises. For some newly-built mines which are located in arid areas with less rainfall, difficult land acquisition in the construction of tailing reservoirs, more valuable mineral elements remained in the tailing wastewater, need to be recycled, and cannot meet the requirements of local safety and environmental protection by adopting a tailing wet discharge method, a tailing harmless treatment mode and a treatment system are researched and adopted to dry the moisture in the tailings as much as possible and reduce the accumulated water in the reservoirs, thereby reducing the infiltration line of the dam body, improving the safety degree of the dam body, improving the utilization rate of return water, improving the utilization coefficient of reservoir capacity, reducing the environmental pollution, avoiding the pollution of the water quality of the ground surface and underground water around poisonous substances in the water, saving water sources, simplifying the problem of reservoir closure, reducing the cost of conveying and recycling, realizing the recycling of wastewater, recycling useful metals, preventing the subsidence of the ground surface, governing goaf, reducing the dilution and loss rate of ores and the like, and the problems are faced and urgently needed to be solved by all mine enterprises, meanwhile, the method has great significance for improving the comprehensive utilization of the tailings and meeting the national requirements on green mine construction.
Disclosure of Invention
The invention provides a mine tailing harmless disposal system, which aims to solve the technical problems that valuable mineral elements are still left in existing tailing wastewater, the comprehensive utilization rate of tailings is low, surrounding rock conditions of underground goafs are unstable and need to be treated, the recovery utilization rate of tailing wastewater is low, the storage capacity of tailings is full or is about to reach the upper limit, the conventional wet-discharge tailing storage is avoided being higher on a saturation line, the risk of dam break exists, and the environmental pollution is reduced.
In order to solve the technical problems, the invention adopts the following technical scheme:
a harmless disposal system for mine tailings comprises a dry sand preparation disposal tailing mechanism, a fine grain high-concentration tailing concentrating mechanism, a filter cake preparation disposal tailing mechanism and a fine grain tailing cementing filler preparation disposal tailing mechanism, wherein the dry sand preparation disposal tailing mechanism comprises a slurry pump, a cyclone and a high-frequency vibration dewatering screen, the slurry pump pumps the whole tailing slurry of a plant selection to the cyclone for classification, and the high-frequency vibration dewatering screen dewaters the bottom flow after classification of the cyclone to prepare dry sand; the fine-grain high-concentration tailing concentrating mechanism comprises a buffer tank, a paste thickener, a flocculating agent room and an overflow water tank, wherein the buffer tank is used for classifying overflow of the cyclone and full tailing mortar of a selected factory according to the proportion of 3: 7, the paste thickener concentrates the mixed tailings flowing out of the buffer tank to obtain fine-grain high-concentration tailings, the flocculant room sends the stored flocculant to the paste thickener through a pump to accelerate the mixed tailings to settle so as to improve the concentration of underflow, and the overflow water of the paste thickener is stored in the overflow water tank so as to realize secondary utilization of water resources; the tailing disposal mechanism for preparing the filter cakes comprises a plate-and-frame filter press and a filtrate water tank, wherein the plate-and-frame filter press is used for carrying out filter pressing and dehydration on a part of fine-grain high-concentration tailing after the underflow concentration of the paste thickener to obtain a tailing filter cake, and the filtrate water tank is used for storing the filtrate of the plate-and-frame filter press so as to return to a selecting factory for reselecting valuable elements; the tailing processing mechanism for preparing the fine-grain tailing cemented filling body comprises a cement bin, a screw feeder, a screw conveyor, a double-shaft horizontal stirring tank, a powerful stirring barrel and a filling pump, wherein cement is provided for the cement bin as a cementing material, the screw feeder feeds and conveys the cement, the screw conveyor weighs and measures the cement conveyed by the feeding, the double-shaft horizontal stirring tank carries out primary stirring on the weighed cement, overflow water in an overflow water tank and another part of fine-grain high-concentration tailing after underflow concentration of a paste thickener, the powerful stirring barrel carries out secondary stirring on a stirrer flowing out of the double-shaft horizontal stirring tank, and the filling pump conveys the fine-grain tailing cemented filling body prepared by stirring of the powerful stirring barrel to a downhole goaf for fine-grain tailing cemented filling.
Furthermore, the tailings in the high-frequency vibration dewatering screen flow out of the vibrating screen when the water content is 15-20%.
Furthermore, the tailing mechanism is dealt with to preparation dry sand still includes dry sand conveyer belt, dry sand shovel machine and dry sand transport vechicle, the dry sand conveyer belt carries the dry sand that high frequency vibration dewatering screen made to pile up outside the factory building, dry sand shovel machine will pile up the dry sand shovel of depositing and transport to the sand factory for building on the dry sand transport vechicle and carry out the comprehensive utilization.
Further, the mixed tailings flow out of the bottom of the paste thickener when being concentrated to 55-60% under the action of a mud scraper inside the paste thickener.
Further, the tailing mechanism is dealt with to preparation filter cake still includes filter cake conveyer belt, filter cake shovel, filter cake transport vechicle and bull-dozer, the filter cake conveyer belt carries the filter cake that plate and frame filter press made to pile up outside the factory building and deposit, the filter cake shovel with the filter cake transport vechicle of piling up on the filter cake transport vechicle transport to the dry heap of tailings and assist with the bull-dozer and carry out the dry heap of tailings.
Compared with the prior art, the harmless treatment system for the mine tailings comprises three harmless treatment mechanisms of preparing a dry sand treatment tailing mechanism, preparing a filter cake treatment tailing mechanism and preparing a fine-grain tailing cemented filling body treatment tailing mechanism, wherein the dry sand treatment tailing mechanism is used for preparing dry sand with specific water content from full-tailing mortar of a plant selection firstly, then the full-tailing mortar of the plant selection is prepared into tailing filter cake with specific water content through a fine-grain high-concentration tailing concentrating mechanism and a filter cake preparation treatment tailing mechanism, and the fine-grain high-concentration tailing concentrating mechanism and the fine-grain tailing cemented filling body preparation tailing mechanism can be used for preparing the full-tailing mortar of the plant selection into a fine-grain tailing cemented filling body with high strength and conveying the fine-grain tailing cemented filling body to an underground goaf for performing fine-grain tailing cemented filling, so that three different treatment modes for the tailing mine are realized, therefore, the treatment advantage is obvious, and the comprehensive utilization of tailing resources is realized. Therefore, the harmless treatment system for mine tailings can make full use of tailings resources of a dressing plant, reduce investment for mine construction, close a tailings warehouse or an old mine with the storage capacity reaching the upper limit, effectively consume the tailings resources, and fully excavate the potential of the tailings by a continuous whole system.
Drawings
Fig. 1 is a schematic flow diagram of a harmless disposal system for mine tailings provided by the invention.
Fig. 2 is a schematic diagram of a tailing disposal mechanism for preparing dry sand provided by the invention.
Fig. 3 is a related schematic diagram of a fine-grained high-concentration tailing concentrating mechanism and a tailing disposal mechanism for preparing filter cakes, which are provided by the invention.
Fig. 4 is a related schematic diagram of a fine-grain high-concentration tailing concentrating mechanism and a tailing disposal mechanism for preparing a fine-grain tailing cemented filling body provided by the invention.
In the figure, 1, a tailing disposal mechanism is treated by preparing dry sand; 11. a slurry pump; 12. a swirler; 13. vibrating the dewatering screen at high frequency; 14. a dry sand conveyor belt; 15. a dry sand shovel machine; 16. a dry sand transport vehicle; 2. a fine-grain high-concentration tailing concentrating mechanism; 21. a buffer tank; 22. a paste thickener; 23. a flocculant chamber; 24. an overflow water tank; 3. a tailing disposal mechanism for preparing filter cakes; 31. a plate and frame filter press; 32. a filtrate water tank; 33. a filter cake conveyor belt; 34. a filter cake shovel machine; 35. a filter cake transport vehicle; 36. a bulldozer; 4. preparing a fine-grain tailing cemented filling body and disposing a tailing mechanism; 41. a cement bin; 42. a screw feeder; 43. a screw conveyor; 44. a double-shaft horizontal stirring tank; 45. a strong stirring barrel; 46. a filling pump; 100. selecting factory full-tail mortar; 200. drying sand; 201. a sand plant for construction; 300. a filter cake; 301. dry stacking of tailings; 400. a downhole goaf.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
Referring to fig. 1 to 4, the present invention provides a system for harmless disposal of mine tailings, comprising a tailings disposal mechanism 1 for preparing dry sand, a tailings concentration mechanism 2 for fine-grained high-concentration tailings, a tailings disposal mechanism 3 for preparing filter cake, and a tailings disposal mechanism 4 for preparing fine-grained tailings cemented filling material, the dry sand preparation tailings disposal mechanism 1 comprises a slurry pump 11, a cyclone 12 and a high-frequency vibration dewatering screen 13, the slurry pump 11 pumps the whole tail mortar 100 of the selected factory to a cyclone 12 in the factory for classification, the high-frequency vibration dewatering screen 13 dewaters the bottom flow after the classification of the cyclone 12 to prepare dry sand 200, namely, after full tail mortar is fully classified in the cyclone 12, the bottom flow of the cyclone 12 flows into the high-frequency vibration dewatering screen 13 for dewatering, under the high-speed vibration of the high-frequency vibration dewatering screen 13, continuously reducing the moisture in the tailings until the moisture content in the tailings is reduced to a preset value, and flowing out of the high-frequency vibration dewatering screen 13; the fine-grain high-concentration tailing concentrating mechanism 2 comprises a buffer tank 21, a paste thickener 22, a flocculant room 23 and an overflow water tank 24, wherein overflow after the classification of the cyclone 12 and factory-selection full-tailing mortar 100 are mixed by the buffer tank 21 according to the ratio of 3: 7, the paste thickener 22 concentrates the mixed tailings flowing out of the buffer tank 21 to obtain fine-grain high-concentration tailings, the flocculant room 23 sends the stored flocculant to the paste thickener 22 through a pump to accelerate the mixed tailings to settle so as to improve the concentration of underflow, the overflow water pool 24 stores the overflow water of the paste thickener 22 to realize secondary utilization of water resources, and the fine-grain high-concentration tailings obtained after the paste thickener 22 concentrates have two places to the same time, one part is conveyed to the tailing preparation and filter cake disposal mechanism 3 to prepare filter cakes, and the other part is conveyed to the tailing preparation and cementing and filling body disposal mechanism 4 as cementing aggregate to prepare fine-grain tailings cementing and filling body; the tailing disposal mechanism 3 for preparing filter cakes comprises a plate-and-frame filter press 31 and a filtrate water tank 32, wherein the plate-and-frame filter press 31 carries out filter pressing dehydration on a part of fine-grained high-concentration tailings obtained after the underflow concentration of the paste thickener 22 to obtain a tailing filter cake 300, and the filtrate water tank 32 stores filtrate of the plate-and-frame filter press 31 so as to return to a selecting factory for carrying out the reselection of valuable elements; the tailing processing mechanism 4 for preparing the fine grain tailing cemented filling body comprises a cement bin 41, a screw feeder 42, a screw conveyer 43, a double-shaft horizontal stirring tank 44, a powerful stirring barrel 45 and a filling pump 46, the cement bin 41 provides cement as a cementing material, the screw feeder 42 feeds and conveys the cement, the screw conveyer 43 is used for weighing and metering cement conveyed by feeding, the double-shaft horizontal stirring tank 44 is used for carrying out first-stage stirring on the weighed and metered cement, overflow water in the overflow water tank 24 and another part of fine-grained high-concentration tailings after the underflow concentration of the paste thickener 22, the strong stirring barrel 45 is used for carrying out the second-stage stirring on the stirred material flowing out of the double-shaft horizontal stirring tank 44, and the filling pump 46 conveys the fine-grain tailing cemented filling body prepared by stirring in the strong stirring barrel 45 to the underground goaf 400 for fine-grain tailing cemented filling.
As a specific embodiment, the tailings in the high-frequency vibration dewatering screen 13 flow out of the vibrating screen when the water content is 15-20%, so that the tailings can be conveniently conveyed by a subsequent conveying belt and temporarily stored outside a factory, and the tailings can be conveniently shoveled and transported after being naturally dewatered, namely, the ground surface is dried.
As a specific example, please refer to fig. 1 and fig. 2, the dry sand treatment tailing preparation mechanism 1 further includes a dry sand conveying belt 14, a dry sand shovel 15 and a dry sand transport vehicle 16, the dry sand conveying belt 14 conveys the dry sand 200 prepared by the high-frequency vibration dewatering screen 13 to the outside of the factory for stockpiling, and the dry sand shovel 15 shovels the stockpiled dry sand 200 onto the dry sand transport vehicle 16 for transporting to a building sand factory 201 for comprehensive utilization, for example, as building sand or for road filling, thereby realizing further harmless treatment application of the dry sand.
As a specific embodiment, the mixed tailings flow out from the bottom of the paste thickener 22 when being concentrated to 55-60% under the action of the mud scraper inside the paste thickener 22, so that the consumed flocculating agent amount is guaranteed to be most economical, low-flow stable sand discharge of the paste thickener 22 is facilitated, pipeline transportation is facilitated, the amount of the mixed tailings pumped to an underground goaf meets the filling requirement, and the requirement on strength for preparing a required filling body can also be met.
As a specific example, referring to fig. 1 and fig. 3, the filter cake preparation and disposal tailing mechanism 3 further includes a filter cake conveyer belt 33, a filter cake shovel 34, a filter cake transport vehicle 35 and a bulldozer 36, the filter cake conveyer belt 33 conveys the filter cake 300 prepared by the plate and frame filter press 31 to the outside of the factory for stockpiling, wherein the moisture content of the tailings is lower than 20%, and the filter cake 300 is suitable for harmless disposal application, and the stockpiled filter cake 300 is shoveled by the filter cake shovel 34 onto the filter cake transport vehicle 35 and transported to a tailing dry yard 301 to assist the tailing dry piling by the bulldozer 36, so as to facilitate subsequent land reclamation.
Because the construction and management processes of the tailing pond are complicated, the risk of dam break exists after the tailing pond is built, for parts of arid or rainy areas, water resources required by the arid areas are comprehensively utilized, the leaching line of the tailing pond rises due to the rainy areas, the pressure of the tailing pond capacity needs to be relieved when the capacity of the tailing pond facing old mines reaches the upper limit, the new mines meet the national green mine construction requirements, the comprehensive utilization of tailing resources is realized, the environmental pollution is reduced, the surrounding rock conditions of underground goafs are not very stable, a filling body needs to have certain strength, the depletion rate and the loss rate of ores are reduced, the surface subsidence is prevented, and the deep mining at the later stage is facilitated. Based on above hot problem, along with the going on of mining process, can produce a large amount of tailings after the ore dressing, the proper processing of tailing guarantees the safety of borehole operation personnel to reducing the mine construction investment, prevents effectively that the earth's surface from collapsing, reduces administrative cost, fully retrieves mineral resource, and the comprehensive utilization water resource accords with the requirement of national green mine construction, adopts the harmless processing system of mine tailing that this application provided can obtain more benefits for the mine.
Compared with the prior art, the harmless treatment system for the mine tailings comprises three harmless treatment mechanisms of preparing a dry sand treatment tailing mechanism, preparing a filter cake treatment tailing mechanism and preparing a fine-grain tailing cemented filling body treatment tailing mechanism, wherein the dry sand treatment tailing mechanism is used for preparing dry sand with specific water content from full-tailing mortar of a plant selection firstly, then the full-tailing mortar of the plant selection is prepared into tailing filter cake with specific water content through a fine-grain high-concentration tailing concentrating mechanism and a filter cake preparation treatment tailing mechanism, and the fine-grain high-concentration tailing concentrating mechanism and the fine-grain tailing cemented filling body preparation tailing mechanism can be used for preparing the full-tailing mortar of the plant selection into a fine-grain tailing cemented filling body with high strength and conveying the fine-grain tailing cemented filling body to an underground goaf for performing fine-grain tailing cemented filling, so that three different treatment modes for the tailing mine are realized, therefore, the treatment advantage is obvious, and the comprehensive utilization of tailing resources is realized. Therefore, the harmless treatment system for mine tailings can make full use of tailings resources of a dressing plant, reduce investment for mine construction, close a tailings warehouse or an old mine with the storage capacity reaching the upper limit, effectively consume the tailings resources, and fully excavate the potential of the tailings by a continuous whole system.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (5)
1. A harmless disposal system for mine tailings is characterized by comprising a dry sand preparation and tailing disposal mechanism, a fine grain high-concentration tailing concentration mechanism, a filter cake preparation and tailing disposal mechanism and a fine grain tailing cementing and filling body preparation and tailing disposal mechanism, wherein the dry sand preparation and tailing disposal mechanism comprises a slurry pump, a cyclone and a high-frequency vibration dewatering screen, the slurry pump pumps the whole tailing slurry of a plant selection to the cyclone for classification, and the high-frequency vibration dewatering screen dewaters the bottom flow of the cyclone after classification to prepare dry sand; the fine-grain high-concentration tailing concentrating mechanism comprises a buffer tank, a paste thickener, a flocculating agent room and an overflow water tank, wherein the buffer tank is used for classifying overflow of the cyclone and full tailing mortar of a selected factory according to the proportion of 3: 7, the paste thickener concentrates the mixed tailings flowing out of the buffer tank to obtain fine-grain high-concentration tailings, the flocculant room sends the stored flocculant to the paste thickener through a pump to accelerate the mixed tailings to settle so as to improve the concentration of underflow, and the overflow water of the paste thickener is stored in the overflow water tank so as to realize secondary utilization of water resources; the tailing disposal mechanism for preparing the filter cakes comprises a plate-and-frame filter press and a filtrate water tank, wherein the plate-and-frame filter press is used for carrying out filter pressing and dehydration on a part of fine-grain high-concentration tailing after the underflow concentration of the paste thickener to obtain a tailing filter cake, and the filtrate water tank is used for storing the filtrate of the plate-and-frame filter press so as to return to a selecting factory for reselecting valuable elements; the tailing processing mechanism for preparing the fine-grain tailing cemented filling body comprises a cement bin, a screw feeder, a screw conveyor, a double-shaft horizontal stirring tank, a powerful stirring barrel and a filling pump, wherein cement is provided for the cement bin as a cementing material, the screw feeder feeds and conveys the cement, the screw conveyor weighs and measures the cement conveyed by the feeding, the double-shaft horizontal stirring tank carries out primary stirring on the weighed cement, overflow water in an overflow water tank and another part of fine-grain high-concentration tailing after underflow concentration of a paste thickener, the powerful stirring barrel carries out secondary stirring on a stirrer flowing out of the double-shaft horizontal stirring tank, and the filling pump conveys the fine-grain tailing cemented filling body prepared by stirring of the powerful stirring barrel to a downhole goaf for fine-grain tailing cemented filling.
2. The harmless disposal system for mine tailings of claim 1, wherein the tailings in the high-frequency vibration dewatering screen flow out of the vibrating screen when the water content of the tailings is 15-20%.
3. The system for harmless disposal of mine tailings as claimed in claim 1, wherein the mechanism for preparing dry sand for disposing tailings further comprises a dry sand conveyer belt, a dry sand shovel machine and a dry sand transport vehicle, wherein the dry sand conveyer belt conveys dry sand prepared by the high-frequency vibration dewatering screen to the outside of the factory for stockpiling, and the dry sand shovel machine shovels the stockpiled dry sand onto the dry sand transport vehicle for transporting to the building sand factory for comprehensive utilization.
4. The harmless treatment system for mine tailings according to claim 1, wherein the mixed tailings flow out of the bottom of the paste thickener when being concentrated to 55-60% under the action of a mud scraper inside the paste thickener.
5. The harmless disposal system for mine tailings according to claim 1, wherein the mechanism for preparing filter cakes and disposing the tailings further comprises a filter cake conveyer belt, a filter cake shovel, a filter cake transport vehicle and a bulldozer, wherein the filter cake conveyer belt conveys the filter cakes prepared by the plate and frame filter press to the outside of the factory for stockpiling, and the filter cake shovel shovels the stockpiled filter cakes onto the filter cake transport vehicle for transport to a dry tailing yard for dry tailing piling with the bulldozer.
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| CN115399217A (en) * | 2022-08-17 | 2022-11-29 | 瑞林环境科技有限公司 | Fine-grain tailing matrix material and preparation method and application thereof |
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| CN114382534A (en) * | 2022-01-12 | 2022-04-22 | 中南大学 | Fine-grain tailing paste-like filling system of vertical sand silo |
| CN115399217A (en) * | 2022-08-17 | 2022-11-29 | 瑞林环境科技有限公司 | Fine-grain tailing matrix material and preparation method and application thereof |
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Application publication date: 20211116 |