CN115400825B - Production equipment and process with efficient dust removal for preparing aggregate from mining waste rock - Google Patents
Production equipment and process with efficient dust removal for preparing aggregate from mining waste rock Download PDFInfo
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- CN115400825B CN115400825B CN202110591872.XA CN202110591872A CN115400825B CN 115400825 B CN115400825 B CN 115400825B CN 202110591872 A CN202110591872 A CN 202110591872A CN 115400825 B CN115400825 B CN 115400825B
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- 239000000428 dust Substances 0.000 title claims abstract description 93
- 239000010878 waste rock Substances 0.000 title claims abstract description 51
- 238000005065 mining Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 15
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 15
- 239000011707 mineral Substances 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 66
- 229910052742 iron Inorganic materials 0.000 claims description 33
- 238000012216 screening Methods 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 31
- 238000009423 ventilation Methods 0.000 claims description 15
- 239000004575 stone Substances 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000005453 pelletization Methods 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 238000010009 beating Methods 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 13
- 239000011435 rock Substances 0.000 abstract description 8
- 238000009825 accumulation Methods 0.000 abstract description 2
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 description 5
- 238000007689 inspection Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 206010024796 Logorrhoea Diseases 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C1/00—Crushing or disintegrating by reciprocating members
- B02C1/02—Jaw crushers or pulverisers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2/00—Crushing or disintegrating by gyratory or cone crushers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention belongs to the technical field of mineral processing, and in particular relates to production equipment and a process with efficient dust removal for preparing aggregate by mining waste rock. According to the invention, the dust is efficiently cleaned through the double matching of the gas and the vibration, the adverse phenomenon caused by long-term accumulation of mining waste rocks on the ground surface is solved, and the waste rocks are effectively and reasonably utilized, so that the recycling of the waste rocks is realized, mineral resources are fully utilized, and the resource utilization rate is improved.
Description
Technical Field
The invention belongs to the technical field of mineral processing, and particularly relates to production equipment and process with efficient dust removal for preparing aggregate from mining waste rock.
Background
Waste rock is a relatively large amount of useful minerals and has mining and utilization values relative to ores, and generally contains no or little useful minerals, and is mainly generated in the tunneling and stripping processes of ore mining.
At present, the mining waste rock is not better utilized temporarily, most of the mining waste rock can only be piled up in a waste rock field, the mining waste rock can be directly transported to a designated place by an automobile and piled up, the underground mining waste rock is required to be piled up after being transported to the ground surface from a vertical shaft through a lifting device, a large amount of land is occupied by the piling up of the waste rock, fine particle waste rock can fly around under the action of wind to generate flying dust, serious pollution is caused to air, geological disasters such as debris flow are easy to cause in rainy areas, life and property safety of people can be endangered in serious cases, therefore, the mining waste rock is required to be effectively treated, waste rock waste utilization is realized, a large amount of dust can appear in the treatment process of the waste rock, a dust removal system is required to be used for removing the dust, the traditional dust removal adopts a high-pressure air flow back blowing or pulse air flow blowing mode to clean the dust, and the dust adhered to the surface of the device can only be cleaned, and the dust on the surface of the device cannot be cleaned, so that the dust cannot be cleaned or the dust is cleaned with the dust is required to be cleaned with high dust removal efficiency due to the design, and the dust removal technology is high in order to be used for preparing the dust and dust.
Disclosure of Invention
The invention aims to provide production equipment and process with high-efficiency dust removal for preparing aggregate from mining waste rocks, so as to solve the problems of low dust cleaning efficiency and environmental influence caused by the mining waste rocks.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a mining waste rock preparation aggregate is with production facility that has high-efficient dust removal, includes hydraulic stone crusher, wheel loader, receives ore bin, jaw breaker and dust pelletizing system, jaw breaker to sixth belt conveyor's external connection have dust pelletizing system, dust pelletizing system includes the dust removal casing, the left side of dust removal casing is provided with the gas receiver, the right side of gas receiver is provided with the outlet duct, the top of outlet duct is provided with the pulse valve, the inside of dust removal casing is provided with the section of thick bamboo, the below of outlet duct is connected with the air duct, the below of air duct is connected with the stand pipe, the external connection of stand pipe has the stay tube, the right side of stand pipe is provided with drive assembly, and drive assembly is in the inside of stay tube.
Preferably, one end of the ore receiving bin is connected with a bar feeder, the other end of the bar feeder is connected with a jaw crusher, the other end of the jaw crusher is connected with a first belt conveyor, a first electromagnetic iron remover is arranged above the first belt conveyor, the other end of the first belt conveyor is connected with a first cone crusher, a second belt conveyor is arranged below the first cone crusher, a third belt conveyor is connected below the second belt conveyor, a second belt conveyor is arranged above the second belt conveyor, a fifth belt conveyor is arranged above the second belt conveyor, a second electromagnetic iron remover is arranged above the other end of the fifth belt conveyor, a buffer ore bin is arranged at the bottom of the buffer ore bin, a bin wall vibrator is arranged inside the buffer ore bin, a fourth belt conveyor is connected above the buffer ore bin, a fourth belt conveyor is connected with a round sieve, and a sixth belt conveyor is connected with the other end of the round sieve.
Preferably, the ore receiving bin is a reinforced concrete rectangular hopper bin, a fixed grid sieve is arranged at the top of the hopper, the ore storage time is 1-1.5 h, the ore buffering bin is a steel structure rectangular cone bottom bin, and the ore storage time is 30-40 min.
Preferably, the jaw crusher is coarse crushing equipment, the maximum feeding granularity is 500mm, the adjustment range of the ore discharge opening is 60-170 mm, the first cone crusher is medium crushing equipment, the maximum feeding granularity is 200mm, the adjustment range of the ore discharge opening is 16-40 mm, the second cone crusher is fine crushing equipment, the maximum feeding granularity is 80mm, and the adjustment range of the ore discharge opening is 13-38 mm.
Preferably, the first belt conveyor and the fifth belt conveyor are both provided with an electronic belt scale and a variable frequency speed regulating device, and the first electromagnetic iron remover is arranged above the material conveying section of the first belt conveyor.
Preferably, the second electromagnetic iron remover is arranged above the material conveying section of the fifth belt conveyor, the circular vibrating screen adopts a double-layer screen surface, the screen hole size of the upper-layer screen surface is 35mm multiplied by 55mm, the screen hole size of the lower-layer screen surface is 14mm multiplied by 22mm, and the dust removing system comprises a dust remover, an induced draft fan and a dust removing air pipe.
Preferably, four arc-shaped ventilation grooves are formed in the right side of the guide tube, a wind paddle is arranged on the right side of each ventilation groove, a ventilation net is arranged at the right end of each support tube, a ball bearing is arranged at the center of each ventilation net, and a driving shaft penetrates through the center of each ball bearing.
Preferably, the driving assembly comprises a wind blade, a driving shaft is arranged on the right side of the wind blade, a cam is connected to the outer portion of the driving shaft, a needle bearing is arranged on the outer portion of the driving shaft and connected to the inner portion of the supporting frame, a spring is arranged in the supporting frame, a telescopic column is arranged above the spring, and a filter cylinder is connected to the upper portion of the telescopic column.
Preferably, the springs are provided with four groups and are respectively positioned at four corners of the filter cylinder, the outside of the springs is provided with a limit groove, and the top inner diameter of the limit groove is smaller than the bottom diameter of the telescopic column.
The production process with high-efficiency dust removal for preparing aggregate from mining waste rock comprises the following steps:
S1, processing waste rock aggregate by adopting a three-section one-closed-circuit crushing and screening process, namely coarse crushing, medium crushing and open-circuit crushing, wherein fine crushing, pre-screening and checking screening form closed circulation, the maximum granularity of raw waste rock ore is 700mm, large waste rock is crushed by adopting a hydraulic stone crusher, waste rock with granularity smaller than 500mm is fed into a mineral receiving bin provided with a fixed grid by a wheel loader, materials in the mineral receiving bin are fed into a jaw crusher by a bar feeder for coarse crushing, and coarse crushing products and fine materials discharged from bar gaps of the bar feeder are fed into a first cone crusher by a first belt conveyor for medium crushing;
S2, transferring the medium crushed products into a circular vibrating screen through a second belt conveyor and a third belt conveyor to perform inspection screening after medium crushing and pre-screening before fine crushing, conveying the undersize of a lower layer screen of the circular vibrating screen into an aggregate product bin through a sixth belt conveyor, conveying the oversize of the upper layer screen and the oversize of the lower layer screen into a buffer ore bin through a fourth belt conveyor after collecting, feeding the undersize into a second cone crusher through an electro-hydraulic flat gate through a fifth belt conveyor to perform fine crushing, returning the fine crushed products to the circular vibrating screen to perform inspection screening to form closed cycle, wherein a first electromagnetic iron remover is used for removing iron pieces in materials of the first belt conveyor, and a second electromagnetic iron remover is used for removing iron pieces in materials of the fifth belt conveyor;
S3, dust air enters from the upper part of the filter cylinder, is filtered through the filter cylinder, clean air is discharged from the left lower corner of the dust removing shell, dust falls into an ash bucket below the filter cylinder, a pulse valve is opened, ventilation is realized through an air outlet pipe, air is blown out through an air duct and a guide pipe, a fan blade is driven to rotate, and then a cam is driven to rotate through a driving shaft, so that vibration beating of the filter cylinder by the cam is realized, and efficient cleaning of dust is accelerated.
Compared with the prior art, the invention has the beneficial effects that: the efficient cleaning of dust is realized through the dual cooperation of gas and vibration, the adverse phenomenon caused by long-term surface stockpiling of mining waste rocks is solved, and the waste rocks are effectively and reasonably utilized, so that the recycling of the waste rocks is realized, mineral resources are fully utilized, and the resource utilization rate is improved.
According to the invention, the filter cylinder dust remover is improved in the process of preparing filling aggregate by mining waste rock, the traditional ash removing mode of air flow blowing is improved, when the high-pressure air is blown, the rotation of a driving shaft can be realized by driving the rotation of a wind paddle, the vibration beating of the filter cylinder can be realized by driving a cam and rotating the cam, and then the refractory dust and moist dust adhered in the filter cylinder can be loosened, and the dust can be cleaned efficiently by being matched with the blowing of the air flow, so that the accumulation of the refractory dust is avoided.
The waste rock preparation process can use waste rock, natural river sand, mineral dressing tailing and rod grinding sand with qualified granularity as mine filling aggregate, and the filling process is to mix and stir various aggregates, gelatinizing agents and other materials according to a certain proportion to prepare filling slurry, and automatically flow or pump the filling slurry to a filling stope through a pipeline to form a stable filling body.
The waste rock preparation process adopts a three-section and one-closed circuit crushing and screening process, namely coarse crushing, medium crushing and open circuit, fine crushing and pre-screening and checking and screening to form closed circulation, so that the three-section crushing and screening process can be mutually matched in the preparation process of mining waste rock, the screening effect of the waste rock forms closed circulation, the unqualified products are circularly crushed and screened, the screening efficiency of the waste rock is further improved, the size of waste rock aggregate is ensured, the pre-screening of the medium crushed products before fine crushing can be performed, the checking and screening of the fine crushed products can be performed, the production capacity of fine crushing equipment can be fully exerted on the premise of ensuring the granularity of the waste rock aggregate is qualified, the crushing and treatment of the mining waste rock aggregate can be fully realized through the setting of the closed circulation, the granularity qualification degree of the waste rock aggregate is ensured, and the crushing efficiency of the waste rock is improved.
Drawings
FIG. 1 is an equipment connection diagram of the production process of the present invention;
FIG. 2 is a block diagram of the production process of the present invention;
FIG. 3 is a schematic view of a cross-sectional front view of a cartridge collector in accordance with the present invention;
FIG. 4 is a schematic view of a front view of a driving assembly according to the present invention;
FIG. 5 is a schematic view of a front view of a cam according to the present invention;
fig. 6 is an enlarged schematic view of the structure of fig. 5a according to the present invention.
In the figure: 1. a hydraulic lithotripter; 2. a wheel loader; 3. a mineral receiving bin; 4. a bar feeder; 5. jaw crusher; 6. a first belt conveyor; 7. a first electromagnetic iron remover; 8. a first cone crusher; 9. a second belt conveyor; 10. a third belt conveyor; 11. a circular vibrating screen; 12. a fourth belt conveyor; 13. buffering the ore bin; 14. a bin wall vibrator; 15. electro-hydraulic plate gate; 16. a fifth belt conveyor; 17. a second electromagnetic iron remover; 18. a second cone crusher; 19. a sixth belt conveyor; 20. an aggregate product bin; 21. a dust removal system; 211. a dust removal shell; 212. an air cylinder; 213. a pulse valve; 214. an air outlet pipe; 215. an air duct; 216. a guide tube; 217. a drive assembly; 2171. a wind blade; 2172. a drive shaft; 2173. a cam; 2174. needle roller bearings; 2175. a support frame; 2176. a spring; 2177. a telescopic column; 218. a support tube; 219. a filter cartridge.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, several embodiments of the present invention are provided:
The utility model provides a mining waste rock preparation aggregate is with production facility that has high-efficient dust removal, including hydraulic stone crusher 1, wheel loader 2, receive ore bin 3, jaw breaker 5 and dust pelletizing system 21, the outside of jaw breaker 5 through sixth belt conveyor 19 is connected with dust pelletizing system 21, dust pelletizing system 21 includes dust removal casing 211, the left side of dust removal casing 211 is provided with gas receiver 212, the right side of gas receiver 212 is provided with outlet duct 214, the top of outlet duct 214 is provided with pulse valve 213, the inside of dust removal casing 211 is provided with filter cartridge 219, the below of outlet duct 214 is connected with air duct 215, the below of air duct 215 is connected with stand pipe 216, the outside of stand pipe 216 is connected with stay tube 218, the right side of stand pipe 216 is provided with drive assembly 217, and drive assembly 217 is in the inside of stay tube 218.
The one end of receiving ore bin 3 is connected with bar feeder 4, bar feeder 4 is provided with adjustable bar screen surface in gap in the tank bottom that is close to the ore discharge end, can reach the function of screening in advance, make fine fraction material separate in advance get into well garrulous equipment, improve coarse fraction equipment productivity ratio, the other end of bar feeder 4 is connected with jaw breaker 5, the other end of jaw breaker 5 is connected with first band conveyer 6, the top of first band conveyer 6 is provided with first electromagnetic iron remover 7, the other end of first band conveyer 6 is connected with first cone crusher 8, the below of first cone crusher 8 is provided with second band conveyer 9, the below of second band conveyer 9 is connected with third band conveyer 10, the top of second band conveyer 9 is provided with second cone crusher 18, the top of second cone crusher 18 is provided with fifth band conveyer 16, the top of fifth band conveyer 16 is provided with second electromagnetic iron remover 17.
The buffer bin 13 is arranged above the other end of the fifth belt conveyor 16, the bin wall of the buffer bin 13 is provided with the bin wall vibrator 14, so that materials can be prevented from being pressed or arched, the flow of materials in the bin is promoted, the reliability of ore discharge is improved, the ore discharge opening of the buffer bin 13 is provided with the electro-hydraulic flat gate 15, the opening of the ore discharge opening can be regulated, the material flow is flexibly controlled, the device can be normally opened during normal production, the device can be closed at any time during maintenance, the electro-hydraulic flat gate 15 is arranged at the bottom of the buffer bin 13, the bin wall vibrator 14 is arranged in the buffer bin 13, the bin wall vibrator 14 is arranged at the cone section of the buffer bin 13, the fourth belt conveyor 12 is connected above the buffer bin 13, the other end of the fourth belt conveyor 12 is connected with the circular vibrating screen 11, the sixth belt conveyor 19 is arranged below the circular vibrating screen 11, and the other end of the sixth belt conveyor 19 is connected with the aggregate product bin 20.
The ore receiving bin 3 is a reinforced concrete rectangular hopper bin, a fixed grid sieve is arranged on the top of the bin, the ore storage time is 1-1.5 h, the ore buffering bin 13 is a steel structure rectangular conical bottom bin, the ore storage time is 30-40 min, radar level gauges are arranged on the ore receiving bin 3 and the ore buffering bin 13, the material level of the ore bin is monitored in real time, high-low level alarm of the material level and interlocking of feeding equipment are realized, and safe operation of the system is ensured.
The jaw crusher 5 is coarse crushing equipment, the maximum feeding granularity is 500mm, the adjustment range of a ore discharge opening is 60-170 mm, the first cone crusher 8 is medium crushing equipment, the maximum feeding granularity is 200mm, the adjustment range of the ore discharge opening is 16-40 mm, the second cone crusher 18 is fine crushing equipment, the maximum feeding granularity is 80mm, the adjustment range of the ore discharge opening is 13-38 mm, and the electromagnetic iron remover is arranged on the medium crushing and fine crushing ore feeding belt, so that iron pieces in waste stones can be effectively removed, the damage to the equipment caused by the iron passing of the cone crusher to influence the production is avoided, the operation of the cone crusher is more stable, the operation rate of the cone crusher is improved, and the operation cost of the cone crusher is reduced.
The first belt conveyor 6 and the fifth belt conveyor 16 are both provided with an electronic belt scale and a variable frequency speed regulating device, the first electromagnetic iron remover 7 is arranged above a material conveying section of the first belt conveyor 6, the first belt conveyor 6 and the fifth belt conveyor 16 are both provided with the electronic belt scale and the variable frequency speed regulating device, a function relation comparison table of belt speed and ore quantity is established, and the ore quantity entering the first cone crusher 8 and the second cone crusher 18 is regulated in real time by controlling the belt speed of the belt conveyors.
The second electromagnetic iron remover 17 is arranged above the material conveying section of the fifth belt conveyor 16, the circular vibrating screen 11 adopts a double-layer screen surface, the screen hole size of the upper-layer screen surface is 35mm multiplied by 55mm, the screen hole size of the lower-layer screen surface is 14mm multiplied by 22mm, the circular vibrating screen 11 integrates pre-screening and checking screening, not only can pre-screen medium-crushed products before crushing, but also can check and screen the fine-crushed products, under the premise of ensuring that the granularity of the waste rock aggregate is qualified, the production capacity of the fine-crushing equipment is fully exerted, the circular vibrating screen 11 adopts the double-layer screen surface, the upper-layer screen mainly plays the role of weakening the impact force of the material and assisting in primary screening of the material, the lower-layer screen is a final link for controlling the granularity of the waste rock aggregate, the screening efficiency of the circular vibrating screen 11 is effectively improved, the oversize products of the upper-layer screen and the lower-layer screen are gathered and enter the fine crushing operation, the lower-layer screen undersize product is a final aggregate product, the dust removing system 21 comprises a dust remover, a draught fan and a dust removing air pipe, dust-removing and dust-removing air pipes are introduced into a dust-removing system 21 for cleaning and environmental work.
Four arc-shaped ventilation grooves are formed in the right side of the guide pipe 216, a wind paddle 2171 is arranged on the right side of the ventilation grooves, a ventilation net is arranged at the right end of the support pipe 218, a ball bearing is arranged in the center of the ventilation net, and a driving shaft 2172 penetrates through the center of the ball bearing.
The driving assembly 217 comprises a wind paddle 2171, a driving shaft 2172 is arranged on the right side of the wind paddle 2171, a cam 2173 is connected to the outer portion of the driving shaft 2172, a needle bearing 2174 is arranged on the outer portion of the driving shaft 2172 and connected to the inner portion of a supporting frame 2175, a spring 2176 is arranged in the inner portion of the supporting frame 2175, a telescopic column 2177 is arranged above the spring 2176, a filter cylinder 219 is connected to the upper portion of the telescopic column 2177, when the air outlet pipe 214 supplies air, blowing of the wind paddle 2171 can be achieved through the arrangement of the structure, further rotation of the driving shaft 2172 can be achieved, accordingly the cam 2173 rotates to achieve beating vibration of the filter cylinder 219, dropping of dust is achieved, and efficient dust cleaning efficiency is achieved.
The springs 2176 are provided with four sets and are respectively positioned at four corners of the filter cartridge 219, the outside of the springs 2176 are provided with limit grooves, and the top inner diameter of the limit grooves is smaller than the bottom diameter of the telescopic posts 2177.
The production process with high-efficiency dust removal for preparing aggregate from mining waste rock comprises the following steps:
s1, processing waste rock aggregate, namely adopting a three-section one-closed-circuit crushing screening process, namely coarse crushing, medium crushing and open-circuit crushing, finely crushing, pre-screening and checking screening to form closed circulation, wherein the maximum granularity of raw waste rock ore is 700mm, large waste rock is crushed by a hydraulic stone crusher 1, waste rock with granularity less than 500mm is fed into an ore receiving bin 3 provided with a fixed grid screen by a wheel loader 2, materials in the ore receiving bin 3 are fed into a jaw crusher 5 by a bar feeder 4 for coarse crushing, and coarse crushing products and fine materials discharged from bar gaps of the bar feeder 4 are fed into a first cone crusher 8 by a first belt conveyor 6 for medium crushing;
S2, transferring the medium crushed products into a circular vibrating screen 11 through a second belt conveyor 9 and a third belt conveyor 10 to perform inspection screening after medium crushing and pre-screening before crushing, conveying the undersize of a lower layer screen of the circular vibrating screen 11 into qualified aggregate (granularity is smaller than 12 mm), conveying the aggregate to an aggregate product bin 20 through a sixth belt conveyor 19, collecting the oversize of an upper layer screen and the undersize of the lower layer screen, conveying the oversize into a buffer ore bin 13 through a fourth belt conveyor 12, conveying the oversize into a second cone crusher 18 through an electro-hydraulic flat gate 15 through a fifth belt conveyor 16 to perform fine crushing, returning the fine crushed products to the circular vibrating screen 11 to perform inspection screening to form closed cycle, and removing iron pieces in the materials of the first belt conveyor 6 by a first electromagnetic iron remover 7 and removing iron pieces in the materials of the fifth belt conveyor 16 by a second electromagnetic iron remover 17;
s3, dust air enters from the upper part of the filter drum 219, is filtered through the filter drum 219, clean air is discharged from the lower left corner of the dust removal shell 211, dust falls into an ash bucket below the filter drum 219, a pulse valve 213 is opened, ventilation is carried out through an air outlet pipe 214, air is blown out through an air guide pipe 215 and a guide pipe 216 at the same time, a wind paddle 2171 is driven to rotate, and then a cam 2173 is driven to rotate through a driving shaft 2172, so that the cam 2173 is used for vibrating and beating the filter drum 219, and efficient cleaning of the dust is accelerated.
Working principle: the large waste stones are crushed by a hydraulic stone crusher 1, the waste stones with the granularity smaller than 500mm are fed into a mineral receiving bin 3 provided with a fixed grid sieve by a wheel loader 2, materials in the mineral receiving bin 3 are fed into a jaw crusher 5 through a bar feeder 4 to be coarsely crushed, coarse crushed products and fine grained materials discharged from bar gaps of the bar feeder 4 are fed into a first cone crusher 8 through a first belt conveyor 6 to be middling, the middling products are transferred into a circular vibrating screen 11 through a second belt conveyor 9 and a third belt conveyor 10 to be inspected and screened after middling and pre-screened before fine crushing, and the undersize of the circular vibrating screen 11 is qualified aggregate (the granularity is smaller than 12 mm) and is fed into an aggregate product bin 20 through a sixth belt conveyor 19.
The oversize products of the upper layer screen and the lower layer screen are conveyed into a buffer ore bin 13 through a fourth belt conveyor 12 after being gathered, then are conveyed into a second cone crusher 18 through an electro-hydraulic flat gate 15, the crushed products return to a round vibrating screen 11 for checking and screening to form a closed cycle, a first electromagnetic iron remover 7 is used for removing iron pieces in materials of the first belt conveyor 6, a second electromagnetic iron remover 17 is used for removing iron pieces in materials of the fifth belt conveyor 16, dust air is sucked through a dust removing air pipe in the process of crushing and conveying waste stones, dust is filtered through a dust remover, the dust air enters from the upper part of a filter drum 219 and is filtered through the filter drum 219, clean air is discharged from the lower left corner of a dust removing shell 211, the dust falls into the dust hopper below the filter drum 219, a pulse valve 213 is opened, air is ventilated through an air outlet pipe 214, and meanwhile, air is blown out through an air guide pipe 215 and a guide pipe 216, a fan 2171 is driven to rotate, and a cam 2172 is driven to rotate, so that the cam 2173 is driven to vibrate the filter drum 219, and dust is accelerated, and dust is cleaned effectively.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a mining waste rock preparation aggregate is with production facility that has high efficiency dust removal, includes hydraulic stone crusher (1), wheel loader (2), receives ore bin (3), jaw breaker (5) and dust pelletizing system (21), its characterized in that: the outside of the jaw crusher (5) to the sixth belt conveyor (19) is connected with a dust removing system (21), the dust removing system (21) comprises a dust removing shell (211), the left side of the dust removing shell (211) is provided with an air cylinder (212), the right side of the air cylinder (212) is provided with an air outlet pipe (214), the upper part of the air outlet pipe (214) is provided with a pulse valve (213), The dust removal device comprises a dust removal shell (211), and is characterized in that a filter cylinder (219) is arranged in the dust removal shell, an air duct (215) is connected to the lower side of the air duct (214), a guide pipe (216) is connected to the lower side of the air duct (215), a supporting pipe (218) is connected to the outer side of the guide pipe (216), a driving component (217) is arranged on the right side of the guide pipe (216), and the driving component (217) is arranged in the supporting pipe (218); one end of the ore bin (3) is connected with a bar feeder (4), the other end of the bar feeder (4) is connected with a jaw crusher (5), the other end of the jaw crusher (5) is connected with a first belt conveyor (6), a first electromagnetic iron remover (7) is arranged above the first belt conveyor (6), the other end of the first belt conveyor (6) is connected with a first cone crusher (8), a second belt conveyor (9) is arranged below the first cone crusher (8), a third belt conveyor (10) is connected below the second belt conveyor (9), a second cone crusher (18) is arranged above the second belt conveyor (9), A fifth belt conveyor (16) is arranged above the second cone crusher (18), a second electromagnetic iron remover (17) is arranged above the fifth belt conveyor (16), a buffer ore bin (13) is arranged above the other end of the fifth belt conveyor (16), an electrohydraulic flat gate (15) is arranged at the bottom of the buffer ore bin (13), a bin wall vibrator (14) is arranged inside the buffer ore bin (13), a fourth belt conveyor (12) is connected above the buffer ore bin (13), a round vibrating screen (11) is connected to the other end of the fourth belt conveyor (12), A sixth belt conveyor (19) is arranged below the circular vibrating screen (11), and the other end of the sixth belt conveyor (19) is connected with an aggregate product bin (20); Four arc-shaped ventilation grooves are formed in the right side of the guide pipe (216), a wind paddle (2171) is arranged on the right side of each ventilation groove, a ventilation net is arranged at the right end of the support pipe (218), a ball bearing is arranged in the center of each ventilation net, and a driving shaft (2172) penetrates through the center of each ball bearing; The driving assembly (217) comprises a wind paddle (2171), a driving shaft (2172) is arranged on the right side of the wind paddle (2171), a cam (2173) is connected to the outside of the driving shaft (2172), a needle bearing (2174) is arranged on the outside of the driving shaft (2172), the needle bearing (2174) is connected to the inside of a supporting frame (2175), a spring (2176) is arranged in the supporting frame (2175), a telescopic column (2177) is arranged above the spring (2176), and a filter cartridge (219) is connected to the upper side of the telescopic column (2177); the springs (2176) are provided with four groups and are respectively positioned at four corners of the filter cylinder (219), limiting grooves are formed in the outer parts of the springs (2176), and the top inner diameters of the limiting grooves are smaller than the bottom diameters of the telescopic columns (2177).
2. The production equipment with high-efficiency dust removal for preparing aggregate from mining waste rock according to claim 1, wherein the production equipment is characterized in that: the ore receiving bin (3) is a reinforced concrete rectangular hopper bin, a fixed grid sieve is arranged on the top of the bin, the ore storage time is 1-1.5 h, the ore buffering bin (13) is a steel structure rectangular cone bottom bin, and the ore storage time is 30-40 min.
3. The production equipment with high-efficiency dust removal for preparing aggregate from mining waste rock according to claim 1, wherein the production equipment is characterized in that: the jaw crusher (5) is coarse crushing equipment, the maximum feeding granularity is 500mm, the adjustment range of a mineral discharge opening is 60-170 mm, the first cone crusher (8) is medium crushing equipment, the maximum feeding granularity is 200mm, the adjustment range of the mineral discharge opening is 16-40 mm, the second cone crusher (18) is fine crushing equipment, the maximum feeding granularity is 80mm, and the adjustment range of the mineral discharge opening is 13-38 mm.
4. The production equipment with high-efficiency dust removal for preparing aggregate from mining waste rock according to claim 1, wherein the production equipment is characterized in that: the first belt conveyor (6) and the fifth belt conveyor (16) are respectively provided with an electronic belt scale and a variable frequency speed regulating device, and the first electromagnetic iron remover (7) is arranged above the material conveying section of the first belt conveyor (6).
5. The production equipment with high-efficiency dust removal for preparing aggregate from mining waste rock according to claim 1, wherein the production equipment is characterized in that: the second electromagnetic iron remover (17) is arranged above a material conveying section of the fifth belt conveyor (16), the circular vibrating screen (11) adopts a double-layer screen surface, the screen hole size of the upper-layer screen surface is 35mm multiplied by 55mm, the screen hole size of the lower-layer screen surface is 14mm multiplied by 22mm, and the dust removing system (21) comprises a dust remover, an induced draft fan and a dust removing air pipe.
6. A process for the production of aggregate from mined waste rock according to any one of claims 1 to 5 with efficient dust removal, characterised in that:
S1, processing waste rock aggregate, namely adopting a three-section one-closed-circuit crushing and screening process, namely coarse crushing, medium crushing and open-circuit crushing, finely crushing, pre-screening and checking and screening to form closed circulation, wherein the maximum granularity of raw waste rock ore is 700mm, large waste rock is crushed by a hydraulic stone crusher (1), waste rock with granularity less than 500mm is fed into an ore receiving bin (3) provided with a fixed grid screen by a wheel loader (2), materials in the ore receiving bin are fed into a jaw crusher (5) by a bar feeder (4) to be coarse crushed, and coarse crushed products and fine materials discharged from bar gaps of the bar feeder (4) are fed into a first cone crusher (8) by a first belt conveyor (6) to be medium crushed;
S2, transferring the medium crushed products into a circular vibrating screen (11) through a second belt conveyor (9) and a third belt conveyor (10), checking and screening after medium crushing and pre-screening before crushing, conveying undersize of a lower layer screen of the circular vibrating screen (11) to an aggregate product bin (20) through a sixth belt conveyor (19), conveying oversize of an upper layer screen and oversize of the lower layer screen into a buffer ore bin (13) through a fourth belt conveyor (12) after collecting, and then feeding the crushed products into a second cone crusher (18) through an electro-hydraulic flat gate (15) through a fifth belt conveyor (16) for fine crushing, returning the fine crushed products to the circular vibrating screen (11) for checking and screening to form a closed cycle, wherein a first electromagnetic iron remover (7) is used for removing iron pieces in materials of the first belt conveyor (6), and a second electromagnetic iron remover (17) is used for removing iron pieces in materials of the fifth belt conveyor (16);
S3, dust air enters from the upper part of the filter cylinder (219), is filtered through the filter cylinder (219), clean air is discharged from the left lower corner of the dust removing shell (211), dust falls into an ash bucket below the filter cylinder (219), a pulse valve (213) is opened, ventilation is realized through an air outlet pipe (214), air is blown out through an air guide pipe (215) and a guide pipe (216) simultaneously, a fan blade (2171) is driven to rotate, and then a driving shaft (2172) is used for driving a cam (2173) to rotate, so that the cam (2173) is used for vibrating and beating the filter cylinder (219), and efficient cleaning of dust is accelerated.
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| CN117654728B (en) * | 2024-01-31 | 2024-04-19 | 西南交通建设集团股份有限公司 | Mineral exploitation breaker is used in mine |
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| CN106311447A (en) * | 2016-11-21 | 2017-01-11 | 黄海涛 | Dust removal system special for crushing and screening equipment |
| CN207102727U (en) * | 2017-08-22 | 2018-03-16 | 包头智茂元生态农业科技有限公司 | One kind modernization dustless environment protecting mine rock material disintegrating apparatus |
| CN208661227U (en) * | 2018-07-24 | 2019-03-29 | 重庆国丰实业有限公司 | Jaw crushing dust removal device |
| CN109772058A (en) * | 2019-03-27 | 2019-05-21 | 徐州宇晟安全环保科技有限公司 | A kind of Mechanized dry filter dust pelletizing system |
| CN212524447U (en) * | 2020-01-08 | 2021-02-12 | 山东省冶金设计院股份有限公司 | A mixed processing system for crushing magnetite and preparing sand and gravel aggregate from waste rock |
| CN212349063U (en) * | 2020-08-07 | 2021-01-15 | 陕西冶金设计研究院有限公司 | Basalt comprehensive utilization system |
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