CN113769868B - Dry-wet combined recovery system and method for waste rock in refuse dump - Google Patents
Dry-wet combined recovery system and method for waste rock in refuse dump Download PDFInfo
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- CN113769868B CN113769868B CN202110987791.1A CN202110987791A CN113769868B CN 113769868 B CN113769868 B CN 113769868B CN 202110987791 A CN202110987791 A CN 202110987791A CN 113769868 B CN113769868 B CN 113769868B
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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
- B02C21/00—Disintegrating plant with or without drying of the material
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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
- 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
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
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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
- B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
- B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a dry-wet combined recycling system and method for waste rocks in a refuse dump, and belongs to the technical field of recycling. The dry-wet combined recovery system for waste rocks in the refuse dump comprises: the feed inlet of the first collecting bin is communicated with the first discharge outlet of the dry-type crushing pre-screening device; the dry-type screening device is communicated with a second discharge hole of the dry-type crushing pre-screening device; the wet type screening device is communicated with a second discharge hole of the crushing pre-screening device, and a first discharge hole of the wet type screening device is communicated with a feed inlet of the first collecting bin; the second collecting bin is communicated with a second discharge hole of the wet type screening device; and a feed inlet of the tail mud treatment device is communicated with a third discharge outlet of the wet screening device. The dry-wet combined recycling system and method for the waste rock of the refuse dump can process and treat the waste rock of the refuse dump, thereby achieving the purposes of recycling the waste rock of the refuse dump, land reclamation and recovering the ecological environment of the refuse dump.
Description
Technical Field
The invention relates to the technical field of recycling, in particular to a dry-wet combined recycling system and method for waste rocks in a refuse dump.
Background
In the process of iron mine exploitation, due to the distribution of ore zones and ore bodies, rock stripping operation is needed, namely, rocks which do not have sorting value at present are stripped and stockpiled, so that a dumping site with larger floor area is formed.
The waste dump occupies cultivated land, is formed by manual accumulation, has poor stability and low vegetation coverage rate, and is easy to cause geological disasters such as debris flow and the like due to heavy rain and the like.
Disclosure of Invention
The invention provides a dry-wet combined recovery system and method for waste rocks in a refuse dump, which solve or partially solve the technical problem that the refuse dump is formed in the process of iron mine exploitation in the prior art.
In order to solve the technical problem, the invention provides a dry-wet combined recycling system for waste rocks in a refuse dump, which comprises: a crushing pre-screening device; the dry type crushing and pre-screening device is communicated with a first discharge hole of the crushing and pre-screening device; a feed inlet of the first collecting bin is communicated with a first discharge outlet of the dry-type crushing pre-screening device; the dry screening device is communicated with a second discharge hole of the dry crushing pre-screening device; the wet screening device is communicated with the second discharge hole of the crushing pre-screening device, and the first discharge hole of the wet screening device is communicated with the feed inlet of the first collecting bin; the second collecting bin is communicated with a second discharge hole of the wet screening device; and the feed inlet of the tail mud treatment device is communicated with the third discharge outlet of the wet screening device.
Further, the crushing pre-screening device comprises: a bar feeder, a jaw crusher and a micro-powder sieve; the feed inlet of the jaw crusher is communicated with the first discharge outlet of the bar feeder, and the discharge outlet of the jaw crusher is communicated with the feed inlet of the dry crushing pre-screening device; the feeding hole of the micro-powder sieve is communicated with the second discharging hole of the bar feeder, the first discharging hole of the micro-powder sieve is communicated with the feeding hole of the dry type crushing pre-screening device, and the second discharging hole of the micro-powder sieve is communicated with the wet type screening device.
Further, the dry crushing pre-screening device comprises: a middle crusher, a fine crusher and a vibrating screen; the feed inlet of the middle crusher is communicated with the first discharge outlet of the crushing pre-screening device; the feed inlet of the fine crusher is communicated with the discharge outlet of the middle crusher, and the first discharge outlet of the fine crusher is communicated with the feed inlet of the vibrating screen; the first discharge port of the vibrating screen is communicated with the dry screening device, the second discharge port of the vibrating screen is communicated with the first collecting bin, and the third discharge port of the vibrating screen is communicated with the feed port of the fine crusher.
Further, the dry screening device includes: a linear sieve, a sand making machine and an air separation chamber; the feed inlet of the linear screen is communicated with the first discharge outlet of the dry type crushing pre-screening device; the feeding hole of the sand making machine is communicated with the first discharging hole of the linear sieve, and the discharging hole of the sand making machine is communicated with the feeding hole of the linear sieve;
the air separation chamber is communicated with a second discharge hole of the linear sieve.
Further, the wet screening device comprises: wet screening; the feed inlet of wet sieve with the second discharge gate intercommunication of broken pre-screening device, the first discharge gate of wet sieve with first collection storehouse intercommunication, the second discharge gate of wet sieve with storehouse intercommunication is collected to the second, the third discharge gate of wet sieve with the feed inlet intercommunication of tail mud processing apparatus.
Further, the tail mud processing apparatus includes: a bailing machine, a dewatering screen and a filter press; the feed inlet of the bailing machine is communicated with the third discharge outlet of the wet screening device; the feed inlet of the dewatering screen is communicated with the first discharge outlet of the bailing machine, and the first discharge outlet of the dewatering screen is communicated with the filter press; the feed inlet of the filter press is communicated with the second discharge hole of the bailing machine.
Further, the tail mud processing apparatus still includes: a magnetic separator; the feed inlet of magnet separator with wet-type screening plant's third discharge gate intercommunication, the first discharge gate of magnet separator with the feed inlet intercommunication of bailing machine.
Further, the dry-wet combined recovery system for the waste rock of the refuse dump further comprises: the dry separation device comprises a first dry separator, a second dry separator, a third dry separator, a fourth dry separator and a fifth dry separator; the feed inlet of the first dry separator is communicated with the first discharge outlet of the crushing pre-screening device, and the first discharge outlet of the first dry separator is communicated with the feed inlet of the dry crushing pre-screening device; the feed inlet of the second dry separator is communicated with the first discharge outlet of the dry crushing pre-screening device, and the first discharge outlet of the second dry separator is communicated with the feed inlet of the first collecting bin; the feed inlet of the third dry separator is communicated with the second discharge outlet of the dry-type crushing pre-screening device, and the first discharge outlet of the third dry separator is communicated with the feed inlet of the dry-type screening device; a feed port of the fourth dry separator is communicated with a first discharge port of the wet screening device, and a first discharge port of the fourth dry separator is communicated with a feed port of the first collection bin; the feed inlet of the fifth dry separator is communicated with the second discharge outlet of the wet screening device, and the first discharge outlet of the fifth dry separator is communicated with the feed inlet of the second collection bin.
Based on the same inventive concept, the application also provides a dry-wet combined recovery method of waste rocks in a waste dump, which comprises the following steps: pouring the raw materials into a crushing pre-screening device, and crushing to obtain a material with the thickness of 0-100mm and a material with the thickness of 0-20 mm; the first discharge port of the crushing pre-screening device conveys the materials of 0-100mm to the dry crushing pre-screening device, and the dry crushing pre-screening device crushes the materials of 0-100mm to obtain the materials of 0-10mm and the materials of 10-20 mm; a first discharge port of the dry type crushing and pre-screening device conveys materials of 10-20mm to a first collection bin; conveying the material with the thickness of 0-10mm to a dry screening device through a second discharge port of the dry crushing pre-screening device, and crushing the material with the thickness of 0-10mm by the dry screening device to obtain stone powder and machine-made sand; the second discharge gate of broken pre-screening device carries 0-20 mm's material to wet screening device, wet screening device sieves 0-20 mm's material, wet screening device's first discharge gate carries 10-20 mm's material to first collecting bin, wet screening device's second discharge gate carries 5-10 mm's material to second collecting bin, wet screening device's third discharge gate carries 0-5 mm's material to tail mud processing apparatus obtains reclamation soil and mechanism sand.
Further, the obtaining of the stone powder and the machine-made sand comprises: the raw materials enter a bar feeder of the crushing pre-screening device for screening to obtain 100-850mm materials and 0-100mm materials; the first discharge port of the bar feeder conveys 100-850mm materials to a jaw crusher of the crushing pre-screening device, and the second discharge port of the bar feeder conveys 0-100mm materials to a micro-powder sieve of the crushing pre-screening device; the jaw crusher crushes 100-850mm materials to obtain 0-100mm materials, and a discharge port of the jaw crusher conveys the 0-100mm materials to a middle crusher of the dry crushing pre-screening device to crush the 0-40mm materials; the fine powder sieve is used for sieving a material with the thickness of 0-100mm to obtain a material with the thickness of 20-100mm and a material with the thickness of 0-20mm, and a first discharge port of the fine powder sieve is used for conveying the material with the thickness of 20-100mm to the middle crusher for crushing to obtain a material with the thickness of 0-40 mm; the middle crusher conveys the materials with the thickness of 0-40mm to a fine crusher of the dry type crushing pre-screening device, and the fine crusher crushes the materials with the thickness of 0-40mm to obtain the materials with the thickness of 0-30 mm; the fine crusher conveys the materials with the thickness of 0-30mm to a vibrating screen of the dry type crushing pre-screening device, and the vibrating screen screens the materials with the thickness of 0-30mm to obtain the materials with the thickness of 0-10mm, the materials with the thickness of 10-20mm and the materials with the thickness of 20-30 mm; conveying 0-10mm materials to a linear sieve of a dry sieving device through a first discharge port of the vibrating sieve, sieving the 0-10mm materials through the linear sieve to obtain 5-10mm materials and 0-5mm materials, conveying the 5-10mm materials to a sand making machine of the dry sieving device through the first discharge port of the linear sieve, crushing the 5-10mm materials through the sand making machine to obtain 0-5mm materials, conveying the 0-5mm materials to the linear sieve through the sand making machine, and conveying the 0-5mm materials to an air separation chamber of the dry sieving device through a second discharge port of the linear sieve to obtain dry stone powder and machine-made sand; a second discharge hole of the vibrating screen conveys 10-20mm of materials to the first collecting bin to obtain 10-20mm of construction gravel; a third discharge hole of the vibrating screen conveys the material with the thickness of 20-30mm to the fine crusher for re-crushing; the method for obtaining the reclamation soil and the machine-made sand comprises the following steps: a second discharge hole of the micro-powder sieve conveys the materials with the thickness of 0-20mm to a wet sieve of the wet sieving device; screening the materials with the thickness of 0-20mm by the wet screen to obtain the materials with the thickness of 10-20mm, the materials with the thickness of 5-10mm and the materials with the thickness of 0-5 mm; a first discharge port of the wet sieve conveys 10-20mm of materials to the first collection bin to obtain 10-20mm of construction gravel; a second discharge port of the wet sieve conveys 5-10mm of materials to the second collection bin to obtain 5-10mm of construction crushed stones; a third discharge port of the wet sieve conveys the material of 0-5mm to a bailer of the tail mud treatment device, and the bailer sieves the material of 0-5mm into tail mud and particles with the tail mud; the first discharge port of the bailing machine conveys the particles with the tail mud to a dewatering screen of the tail mud treatment device, and the dewatering screen screens the particles with the tail mud to obtain the tail mud and machine-made sand; the first discharge hole of the dewatering screen conveys the tail mud to a filter press of the tail mud treatment device to obtain reclaimed soil; and the second discharge hole of the bailing machine conveys the tail mud to a filter press of the tail mud treatment device to obtain the reclamation soil.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
as the dry type crushing pre-screening device is communicated with the first discharge hole of the crushing pre-screening device, the feed inlet of the first collecting bin is communicated with the first discharge hole of the dry type crushing pre-screening device, the dry type screening device is communicated with the second discharge hole of the dry type crushing pre-screening device, the wet type screening device is communicated with the second discharge hole of the crushing pre-screening device, the first discharge hole of the wet type screening device is communicated with the feed inlet of the first collecting bin, the second collecting bin is communicated with the second discharge hole of the wet type screening device, and the feed inlet of the tail mud treatment device is communicated with the third discharge hole of the wet type screening device, raw materials are poured into the crushing pre-screening device to be crushed to obtain 0-100mm materials and 0-20mm materials, and the first discharge hole of the crushing pre-screening device conveys the 0-100mm materials to the dry type crushing pre-screening device, the dry type crushing and pre-screening device crushes 0-100mm materials to obtain 0-10mm materials and 10-20mm materials, a first discharge port of the dry type crushing and pre-screening device conveys the 10-20mm materials to a first collecting bin, a second discharge port of the dry type crushing and pre-screening device conveys the 0-10mm materials to the dry type screening device, the dry type screening device crushes the 0-10mm materials to obtain stone powder and machine-made sand, a second discharge port of the crushing and pre-screening device conveys the 0-20mm materials to a wet type screening device, the wet type screening device screens the 0-20mm materials, a first discharge port of the wet type screening device conveys the 10-20mm materials to the first collecting bin, a second discharge port of the wet type screening device conveys the 5-10mm materials to the second collecting bin, a third discharge port of the wet type screening device conveys the 0-5mm materials to a tail mud treatment device, the reclaimed soil and the machine-made sand can be obtained, and the waste rock in the waste dump can be processed, so that the aims of recycling the waste rock in the waste dump, reclaiming the land and recovering the ecological environment of the waste dump are fulfilled.
Drawings
Fig. 1 is a schematic diagram of a dry-wet combined recycling system for waste rock in a refuse dump according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1, a dry-wet combined recycling system for waste rock in a dump provided by an embodiment of the invention includes:
the dry-type crushing pre-screening device 2 is communicated with a first discharge hole of the crushing pre-screening device 1.
The feeding hole of the first collecting bin 3 is communicated with the first discharging hole of the dry-type crushing pre-screening device 2.
The dry screening device 4 is communicated with a second discharge hole of the dry crushing pre-screening device 2.
The wet type screening device 5 is communicated with the second discharge hole of the crushing pre-screening device 1, and the first discharge hole of the wet type screening device 5 is communicated with the feed inlet of the first collecting bin 3.
The second collecting bin 6 is communicated with a second discharge hole of the wet screening device 5.
The feed inlet of the tail mud treatment device 7 is communicated with the third discharge outlet of the wet screening device 5.
In the embodiment of the application, as the dry-type crushing pre-screening device 2 is communicated with the first discharge port of the crushing pre-screening device 1, the feed port of the first collecting bin 3 is communicated with the first discharge port of the dry-type crushing pre-screening device 2, the dry-type screening device 4 is communicated with the second discharge port of the dry-type crushing pre-screening device 2, the wet-type screening device 5 is communicated with the second discharge port of the crushing pre-screening device 1, the first discharge port of the wet-type screening device 5 is communicated with the feed port of the first collecting bin 3, the second collecting bin 6 is communicated with the second discharge port of the wet-type screening device 5, and the feed port of the tail mud treatment device 7 is communicated with the third discharge port of the wet-type screening device 5, raw materials are poured into the crushing pre-screening device 1 to be crushed to obtain 0-100mm materials and 0-20mm materials, the first discharge port of the crushing pre-screening device 1 conveys the 0-100mm materials to the dry-type crushing pre-screening device 2, the dry type crushing pre-screening device 2 crushes materials with the thickness of 0-100mm to obtain materials with the thickness of 0-10mm and materials with the thickness of 10-20mm, a first discharge port of the dry type crushing pre-screening device 2 conveys the materials with the thickness of 10-20mm to a first collecting bin 3, a second discharge port of the dry type crushing pre-screening device 2 conveys the materials with the thickness of 0-10mm to a dry type screening device 4, the dry type screening device 4 crushes the materials with the thickness of 0-10mm to obtain stone powder and machine-made sand, a second discharge port of the crushing pre-screening device 1 conveys the materials with the thickness of 0-20mm to a wet type screening device 5, the wet type screening device 5 screens the materials with the thickness of 0-20mm, a first discharge port of the wet type screening device 5 conveys the materials with the thickness of 10-20mm to the first collecting bin 3, a second discharge port of the wet type screening device 5 conveys the materials with the thickness of 5-10mm to a second collecting bin 6, the third discharge gate of wet-type screening plant 5 carries 0-5 mm's material to tail mud processing apparatus 7, obtains reclamation soil and mechanism sand, can carry out processing with the refuse dump to reach refuse dump waste rock recycle, carry out the land reclamation, resume the purpose of refuse dump ecological environment.
Wherein, crushing pre-screening plant 1 sieves out the qualified size fraction in the material in advance before middle breakage, thin breakage, has effectively reduced the load of breaker.
Specifically, the crushing pre-screening device 1 comprises: a bar feeder 1-1, a jaw crusher 1-2 and a micro-powder sieve 1-3.
The feed inlet of the jaw crusher 1-2 is communicated with the first discharge outlet of the bar feeder 1-1, and the discharge outlet of the jaw crusher 1-2 is communicated with the feed inlet of the dry-type crushing pre-screening device 2.
The feed inlet of the micro-powder sieve 1-3 is communicated with the second discharge outlet of the bar feeder 1-1, the first discharge outlet of the micro-powder sieve 1-3 is communicated with the feed inlet of the dry type crushing pre-screening device 2, and the second discharge outlet of the micro-powder sieve 1-3 is communicated with the wet type screening device 5.
Wherein, the raw materials enter a bar feeder 1-1 for screening to obtain 100-850mm materials and 0-100mm materials. The first discharge port of the bar feeder 1-1 conveys 100-850mm materials to the jaw crusher 1-2, and the second discharge port of the bar feeder 1-1 conveys 0-100mm materials to the micropowder screen 1-3. The jaw crusher 1-2 crushes materials with the size of 100-850mm to obtain materials with the size of 0-100mm, and a discharge port of the jaw crusher 1-2 conveys the materials with the size of 0-100mm to the dry type crushing pre-screening device 2 for crushing. The method comprises the following steps that a micro powder sieve 1-3 sieves a material with the thickness of 0-100mm to obtain a material with the thickness of 20-100mm and a material with the thickness of 0-20mm, and a first discharge port of the micro powder sieve 1-3 conveys the material with the thickness of 20-100mm to a dry type crushing pre-screening device 2 to be crushed to obtain the material with the thickness of 0-40 mm.
In the present embodiment, the bar clearance of the bar feeder 1-1 is 100mm. The pre-fine powder sieve 1-3 can be provided with a plurality of layers, and the aperture of the lowest layer is 20mm. The minimum gap of the discharge opening of the jaw crusher 1-2 is controlled to 100mm.
Furthermore, as the size range of the raw material of the refuse dump is large, the size of the crushed raw material can reach 800mm, a coarse crushing and pre-screening system is adopted to process the raw material, the bar feeder 1-1 pre-grades the raw material, the 100-850mm material enters a coarse crusher, namely a jaw crusher 1-2, and then is fed into a dry type crushing pre-screening device 2; feeding 0-100mm materials into a micro-powder sieve for sieving by 1-3, and feeding 20-100mm materials into a dry crushing pre-sieving device 2,0-20mm into a wet sieving device 5.
Specifically, the dry crushing pre-screening device 2 includes: 2-1 parts of a middle crusher, 2-2 parts of a fine crusher and 2-3 parts of a vibrating screen.
The feed inlet of the middle crusher 2-1 is communicated with the first discharge outlet of the crushing pre-screening device 1.
The feed inlet of the fine crusher 2-2 is communicated with the discharge outlet of the medium crusher 2-1, and the first discharge outlet of the fine crusher 2-2 is communicated with the feed inlet of the vibrating screen 2-3.
A first discharge port of the vibrating screen 2-3 is communicated with the dry screening device 4, a second discharge port of the vibrating screen is communicated with the first collection bin 3, and a third discharge port of the vibrating screen 2-3 is communicated with a feed port of the fine crusher 2-2.
Wherein, the medium crusher 2-1 conveys the material with the thickness of 0-40mm to the fine crusher 2-2, and the fine crusher 2-2 crushes the material with the thickness of 0-40mm to obtain the material with the thickness of 0-30 mm. The fine crusher 2-2 conveys the materials with the thickness of 0-30mm to the vibrating screen 2-3, and the vibrating screen 2-3 screens the materials with the thickness of 0-30mm to obtain the materials with the thickness of 0-10mm, the materials with the thickness of 10-20mm and the materials with the thickness of 20-30 mm. And a second discharge port of the vibrating screen 2-3 conveys 10-20mm materials to the first collection bin 3 to obtain 10-20mm construction gravel. And a third discharge hole of the vibrating screen 2-3 conveys the material with the thickness of 20-30mm to the fine crusher 2-2 for re-crushing.
After the materials are finely crushed by the fine crusher 2-2, the materials are uniformly screened by the vibrating screen 2-3, and the obtained product has better grain type and lower needle sheet content.
In the present embodiment, the middle crusher 2-1 is a cone crusher, and the size of the ore discharge opening is 45mm. The fine crusher 2-2 is a cone crusher, and the size of the ore discharge opening is 29mm. The vibrating screen 2-3 is a double-layer vibrating screen, the size of the upper layer screen hole is 23mm, and the size of the lower layer screen hole is 12mm.
Specifically, the dry screening device 4 includes: 4-1 linear screen, 4-2 sand making machine and 4-3 air separation chamber.
The feed inlet of the linear screen 4-1 is communicated with the first discharge outlet of the dry-type crushing pre-screening device 2.
The feed inlet of the sand making machine 4-2 is communicated with the first discharge port of the linear sieve 4-1, and the discharge port of the sand making machine 4-2 is communicated with the feed inlet of the linear sieve 4-1.
The winnowing chamber 4-3 is communicated with a second discharge hole of the linear sieve 4-1.
The first discharge port of the vibrating screen 2-3 conveys 0-10mm materials to the linear screen 4-1, the linear screen screens the 0-10mm materials to obtain 5-10mm materials and 0-5mm materials, the first discharge port of the linear screen 4-1 conveys the 5-10mm materials to the sand making machine 4-2, the sand making machine 4-2 crushes the 5-10mm materials to obtain 0-5mm materials, the sand making machine 4-2 conveys the 0-5mm materials to the linear screen 4-1, and the second discharge port of the linear screen 2-3 conveys the 0-5mm materials to the air separation chamber 4-3 to obtain stone powder and machine-made sand.
In the present embodiment, the sand maker 4-2 may be a vertical shaft crusher.
Specifically, the wet sieving device 5 includes: and 5-1 of a wet sieve.
The feeding hole of the wet sieve 5-1 is communicated with the second discharging hole of the crushing pre-screening device 1, the first discharging hole of the wet sieve 5-1 is communicated with the first collecting bin, the second discharging hole of the wet sieve 5-1 is communicated with the second collecting bin 6, and the third discharging hole of the wet sieve 5-1 is communicated with the feeding hole of the tail mud treatment device 7.
In this embodiment, the wet sieve 5-1 may be a double-layer banana sieve, with the upper layer having a mesh size of 10mm and the lower layer having a mesh size of 5mm.
The wet sieve 5-1 is added with water to make slurry, so that the problems of high mud content and difficult removal in the waste rock processing process of the waste dump are solved. Wherein, under the condition that the environmental protection situation is stricter day by day, the water source of the process water adopts a closed pit collecting water, rainwater collecting water and the like as the water source. The water can be directly taken from the mining pit, the catchment water of the refuse dump enters the mining pit to be stored as the water for dry seasons when raining, and simultaneously the tail mud after wet separation enters the mining pit to be recycled after being dehydrated by a filter press. The consumption of new water of the process of '0' is realized, and the waste water of '0' is discharged.
Specifically, the tail mud treatment device 7 includes: a bailing machine 7-1, a dewatering screen 7-2 and a filter press 7-3.
The feed inlet of the bailing machine 7-1 is communicated with the third discharge outlet of the wet screening device 5.
The feed inlet of the dewatering screen 7-2 is communicated with the first discharge port of the bailing machine 7-1, and the first discharge port of the dewatering screen 7-2 is communicated with the filter press 7-3.
The feed inlet of the filter press 7-3 is communicated with the second discharge outlet of the bailing machine 7-1.
In this embodiment, the bailer 7-1 may be a bucket wheel type sand washer. The dewatering screen 7-2 is a linear dewatering screen with the screen hole size of 0.35mm. The filter press 7-3 may be a belt filter.
Wherein, the second discharge port of the micro powder sieve 1-3 conveys the material of 0-20mm to the wet sieve 5-1, and the wet sieve 5-1 sieves the material of 0-20mm to obtain the material of 10-20mm, the material of 5-10mm and the material of 0-5 mm. And a first discharge port of the wet sieve 5-1 conveys 10-20mm of materials to a first collection bin 3 to obtain 10-20mm of construction crushed stone. And a second discharge port of the wet sieve 5-1 conveys the materials of 5-10mm to a second collection bin 6 to obtain the crushed stones of 5-10mm for construction.
And a third discharge port of the wet sieve 5-1 conveys the material of 0-5mm to a bailer 7-1, and the bailer 7-1 sieves the material of 0-5mm into tail mud and particles with the tail mud. The first discharge port of the bailing machine 7-1 conveys the particles with the tail mud to the dewatering screen 7-2, and the dewatering screen 7-2 screens the particles with the tail mud to obtain the tail mud and machine-made sand. And a first discharge hole of the dewatering screen 7-2 conveys the tail mud to a filter press 7-3 to obtain the reclamation soil. And a second discharge hole of the bailing machine 7-1 conveys the tail mud to a filter press 7-3 to obtain reclaimed soil.
The tail mud treatment device 7 further includes: and 7-4 of a magnetic separator.
The feed inlet of the magnetic separator 7-4 is communicated with the third discharge port of the wet screening device 5, and the first discharge port of the magnetic separator 7-4 is communicated with the feed inlet of the bailing machine 7-1.
When a third discharge port of the wet sieve 5-1 conveys a material with the thickness of 0-5mm to the bailing machine 7-1, the magnetic separator 7-4 performs wet separation and recovery on the material with the thickness of 0-5mm, so that ore recovery is more sufficient, and the recovery rate of magnetic iron can reach more than 90%.
In this embodiment, the magnetic separator 7-4 may be a permanent magnet downstream type magnetic separator.
Specifically, the dry-wet combined recovery system for refuse at refuse dump further comprises: a first dry separator 8, a second dry separator 9, a third dry separator 10, a fourth dry separator 11 and a fifth dry separator 12.
The feed inlet of the first dry separator 8 is communicated with the first discharge outlet of the crushing pre-screening device 1, and the first discharge outlet of the first dry separator 8 is communicated with the feed inlet of the dry-type crushing pre-screening device 2. And the second discharge port of the first dry separator 8 discharges the separated magnetic iron.
The feed inlet of the second dry separator 9 is communicated with the first discharge outlet of the dry-type crushing pre-screening device 2, and the first discharge outlet of the second dry separator 9 is communicated with the feed inlet of the first collection bin 3. And a second discharge hole of the second dry separator 9 discharges the separated magnetic iron.
The feed inlet of the third dry separator 10 is communicated with the second discharge outlet of the dry-type crushing pre-screening device 2, and the first discharge outlet of the third dry separator 10 is communicated with the feed inlet of the dry-type screening device 4. And a second discharge port of the third dry separator 10 discharges the separated magnetic iron.
The feed inlet of the fourth dry separator 11 is communicated with the first discharge outlet of the wet screening device 5, and the first discharge outlet of the fourth dry separator 11 is communicated with the feed inlet of the first collection bin 3. And a second discharge port of the fourth dry separator 11 discharges the separated magnetic iron.
The feed inlet of the fifth dry separator 12 is communicated with the second discharge port 5 of the wet screening device, and the first discharge port of the fifth dry separator 12 is communicated with the feed inlet of the second collection bin 6. And a second discharge port of the fifth dry separator 12 discharges the separated magnetic iron.
In the present embodiment, the first dry separator 8, the second dry separator 9, the third dry separator 10, the fourth dry separator 11, and the fifth dry separator 12 may be permanent magnet dry and wet magnetic drums, and different size fractions are sorted.
The first dry separator 8 recovers magnetic iron in a 0-100mm material discharged from a first discharge port of the crushing pre-screening device 1, the second dry separator 9 recovers magnetic iron in a 10-20mm material discharged from the first discharge port of the dry crushing pre-screening device 2, the third dry separator 10 recovers magnetic iron in a 5-10mm material discharged from a second discharge port of the dry crushing pre-screening device 2, the fourth dry separator 11 recovers magnetic iron in a 10-20mm material discharged from the first discharge port of the wet screening device 5, and the fifth dry separator 12 recovers magnetic iron in a 5-10mm material discharged from the second discharge port of the wet screening device 5.
The ore recovery process of grading multistage recovery is realized through the magnetic separator 7-4, the first dry separator 8, the second dry separator 9, the third dry separator 10, the fourth dry separator 11 and the fifth dry separator 12, and the ore recovery process of five-section dry separation and one-section wet separation overcomes the problems of uneven ore embedding and poor recovery effect in waste rocks of a waste dump, and effectively improves the magnetic iron recovery rate of the ore recovery process.
Based on the same inventive concept, the application also provides a dry-wet combined recovery method of waste rocks in a waste dump, which comprises the following steps:
the raw materials are poured into a crushing pre-screening device 1 and crushed to obtain materials with the thickness of 0-100mm and materials with the thickness of 0-20 mm.
The first discharge port of the crushing pre-screening device 1 conveys the materials of 0-100mm to the dry crushing pre-screening device 2, and the dry crushing pre-screening device 2 crushes the materials of 0-100mm to obtain the materials of 0-10mm and the materials of 10-20 mm.
The first discharge port of the dry crushing pre-screening device 2 conveys 10-20mm materials to the first collection bin 3.
And a second discharge port of the dry-type crushing pre-screening device 2 conveys the material with the thickness of 0-10mm to a dry-type screening device 4, and the dry-type screening device 4 crushes the material with the thickness of 0-10mm to obtain mountain flour and machine-made sand.
The second discharge port of the crushing pre-screening device 1 conveys the materials with the thickness of 0-20mm to the wet screening device 5, the wet screening device 5 screens the materials with the thickness of 0-20mm, the first discharge port of the wet screening device 5 conveys the materials with the thickness of 10-20mm to the first collecting bin 3, the second discharge port of the wet screening device 5 conveys the materials with the thickness of 5-10mm to the second collecting bin 6, and the third discharge port of the wet screening device 5 conveys the materials with the thickness of 0-5mm to the tail mud treatment device 7, so that the reclaimed soil and the machine-made sand are obtained.
Specifically, obtaining stone powder and machine-made sand comprises:
the raw materials enter a bar feeder 1-1 of a crushing pre-screening device 1 for screening to obtain 100-850mm materials and 0-100mm materials.
The first discharge port of the bar feeder 1-1 conveys 100-850mm materials to the jaw crusher 1-2 of the crushing pre-screening device 1, and the second discharge port of the bar feeder 1-1 conveys 0-100mm materials to the micro-powder screen 1-3 of the crushing pre-screening device 1.
The jaw crusher 1-2 crushes the materials with the thickness of 100-850mm to obtain the materials with the thickness of 0-100mm, and the discharge port of the jaw crusher 1-2 conveys the materials with the thickness of 0-100mm to the middle crusher 2-1 of the dry type crushing pre-screening device 2 for crushing to obtain the materials with the thickness of 0-40 mm.
The method comprises the following steps that a micro-powder sieve 1-3 sieves a material with the thickness of 0-100mm to obtain a material with the thickness of 20-100mm and a material with the thickness of 0-20mm, and a first discharge port of the micro-powder sieve 1-3 conveys the material with the thickness of 20-100mm to a middle crusher 2-1 to be crushed to obtain the material with the thickness of 0-40 mm.
The middle crusher 2-1 conveys the materials with the thickness of 0-40mm to the fine crusher 2-2 of the dry type crushing pre-screening device 2, and the fine crusher 2-2 crushes the materials with the thickness of 0-40mm to obtain the materials with the thickness of 0-30 mm.
The fine crusher 2-2 conveys the materials with the thickness of 0-30mm to the vibrating screen 2-3 of the dry type crushing pre-screening device 2, and the vibrating screen 2-3 screens the materials with the thickness of 0-30mm to obtain the materials with the thickness of 0-10mm, the materials with the thickness of 10-20mm and the materials with the thickness of 20-30 mm.
The first discharge port of the vibrating screen 2-3 conveys 0-10mm materials to a linear screen 4-1 of a dry screening device 4, the linear screen 4-1 screens the 0-10mm materials to obtain 5-10mm materials and 0-5mm materials, the first discharge port of the linear screen 4-1 conveys the 5-10mm materials to a sand making machine 4-2 of the dry screening device 4, the sand making machine 4-2 crushes the 5-10mm materials to obtain 0-5mm materials, the sand making machine 4-2 conveys the 0-5mm materials to the linear screen 4-1, the second discharge port of the linear screen 4-1 conveys the 0-5mm materials to a wind separation chamber 4-3 of the dry screening device 4 to obtain stone powder and machine-made sand.
And a second discharge port of the vibrating screen 2-3 conveys 10-20mm materials to the first collection bin 3 to obtain 10-20mm construction gravel.
And a third discharge port of the vibrating screen 2-3 conveys the material with the thickness of 20-30mm to the fine crusher 2-2 for crushing again.
Specifically, obtaining reclamation soil and machine-made sand includes:
and a second discharge port of the micro-powder sieve 1-3 conveys the materials with the thickness of 0-20mm to a wet sieve 5-1 of a wet sieving device 5.
The wet sieve 5-1 sieves the materials with the thickness of 0-20mm to obtain the materials with the thickness of 10-20mm, the materials with the thickness of 5-10mm and the materials with the thickness of 0-5 mm.
And a first discharge port of the wet sieve 5-1 conveys 10-20mm of materials to a first collection bin 3 to obtain 10-20mm of construction crushed stone.
And a second discharge port of the wet sieve 5-1 conveys the materials of 5-10mm to a second collection bin 6 to obtain the crushed stones of 5-10mm for construction.
And a third discharge port of the wet sieve 5-1 conveys the material of 0-5mm to a bailer 7-1 of the tail mud processing device 7, and the bailer 7-1 sieves the material of 0-5mm into tail mud and particles with the tail mud.
And a first discharge port of the bailing machine 7-1 conveys the particles with the tail mud to a dewatering screen 7-2 of the tail mud treatment device, and the dewatering screen 7-2 screens the particles with the tail mud to obtain the tail mud and machine-made sand.
And a first discharge hole of the dewatering screen 7-2 conveys the tail mud to a filter press 7-3 of a tail mud treatment device 7 to obtain reclaimed soil.
And a second discharge hole of the bailing machine 7-1 conveys the tail mud to a filter press 7-3 of the tail mud treatment device 7 to obtain reclaimed soil.
The crushed stone for construction with the thickness of 10-20mm, the crushed stone for construction with the thickness of 5-10mm and machine-made sand are produced, and the crushed stone products for construction with three grades realize the recovery of magnetite and concentrate powder, and the marketable productization rate reaches 85%. Simultaneously produces reclamation soil for reclamation land preparation, and the utilization rate of waste rock in a refuse dump reaches 100 percent
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (9)
1. A dry-wet combined recovery method of waste rocks in a refuse dump is characterized in that based on a dry-wet combined recovery system of the waste rocks in the refuse dump, the dry-wet combined recovery system of the waste rocks in the refuse dump comprises the following steps: the device comprises a crushing pre-screening device, a dry-type crushing pre-screening device, a first collecting bin, a dry-type screening device, a wet-type screening device, a second collecting bin and a tail mud treatment device, wherein the dry-type crushing pre-screening device is communicated with a first discharge hole of the crushing pre-screening device; the feed inlet of the first collecting bin is communicated with the first discharge outlet of the dry-type crushing pre-screening device; the dry type screening device is communicated with a second discharge hole of the dry type crushing pre-screening device; the wet screening device is communicated with a second discharge hole of the crushing pre-screening device, and a first discharge hole of the wet screening device is communicated with a feed inlet of the first collecting bin; the second collecting bin is communicated with a second discharge hole of the wet screening device; the feed inlet of the tail mud treatment device is communicated with the third discharge outlet of the wet screening device; the dry-wet combined recovery method of the waste rocks in the refuse dump comprises the following steps:
pouring the raw materials into a crushing pre-screening device, and crushing to obtain a material with the thickness of 0-100mm and a material with the thickness of 0-20 mm;
the first discharge port of the crushing pre-screening device conveys the materials with the thickness of 0-100mm to the dry crushing pre-screening device, and the dry crushing pre-screening device crushes the materials with the thickness of 0-100mm to obtain the materials with the thickness of 0-10mm and the materials with the thickness of 10-20 mm;
a first discharge port of the dry type crushing and pre-screening device conveys materials of 10-20mm to a first collection bin;
conveying the material with the thickness of 0-10mm to a dry screening device through a second discharge port of the dry crushing pre-screening device, and crushing the material with the thickness of 0-10mm by the dry screening device to obtain stone powder and machine-made sand;
the second discharge gate of broken pre-screening device carries 0-20 mm's material to wet screening device, wet screening device sieves 0-20 mm's material, wet screening device's first discharge gate carries 10-20 mm's material to first collecting bin, wet screening device's second discharge gate carries 5-10 mm's material to second collecting bin, wet screening device's third discharge gate carries 0-5 mm's material to tail mud processing apparatus obtains reclamation soil and mechanism sand.
2. The method for dry-wet combined recycling of waste rock in dump according to claim 1, wherein the obtaining of the rock flour and machine-made sand comprises:
the raw materials enter a bar feeder of the crushing pre-screening device for screening to obtain 100-850mm materials and 0-100mm materials;
the first discharge port of the bar feeder conveys 100-850mm materials to a jaw crusher of the crushing pre-screening device, and the second discharge port of the bar feeder conveys 0-100mm materials to a micro-powder sieve of the crushing pre-screening device;
the jaw crusher crushes 100-850mm materials to obtain 0-100mm materials, and a discharge port of the jaw crusher conveys the 0-100mm materials to a middle crusher of the dry crushing pre-screening device to crush the 0-40mm materials;
the fine powder sieve is used for sieving a material with the thickness of 0-100mm to obtain a material with the thickness of 20-100mm and a material with the thickness of 0-20mm, and a first discharge port of the fine powder sieve is used for conveying the material with the thickness of 20-100mm to the middle crusher for crushing to obtain a material with the thickness of 0-40 mm;
the middle crusher conveys the materials with the thickness of 0-40mm to a fine crusher of the dry type crushing pre-screening device, and the fine crusher crushes the materials with the thickness of 0-40mm to obtain the materials with the thickness of 0-30 mm;
the fine crusher conveys the materials with the thickness of 0-30mm to a vibrating screen of the dry type crushing pre-screening device, and the vibrating screen screens the materials with the thickness of 0-30mm to obtain the materials with the thickness of 0-10mm, the materials with the thickness of 10-20mm and the materials with the thickness of 20-30 mm;
the method comprises the following steps that a first discharge port of a vibrating screen conveys 0-10mm materials to a linear screen of a dry screening device, the linear screen screens the 0-10mm materials to obtain 5-10mm materials and 0-5mm materials, the first discharge port of the linear screen conveys the 5-10mm materials to a sand making machine of the dry screening device, the sand making machine crushes the 5-10mm materials to obtain 0-5mm materials, the sand making machine conveys the 0-5mm materials to the linear screen, and a second discharge port of the linear screen conveys the 0-5mm materials to a winnowing chamber of the dry screening device to obtain dry stone powder and machine-made sand;
a second discharge hole of the vibrating screen conveys 10-20mm of materials to the first collecting bin to obtain 10-20mm of construction gravel;
a third discharge hole of the vibrating screen conveys the material with the thickness of 20-30mm to the fine crusher for crushing again;
the reclamation soil and machine-made sand obtained by the method comprises the following steps:
a second discharge hole of the micro-powder sieve conveys the materials with the thickness of 0-20mm to a wet sieve of the wet sieving device;
screening the materials with the thickness of 0-20mm by the wet screen to obtain the materials with the thickness of 10-20mm, the materials with the thickness of 5-10mm and the materials with the thickness of 0-5 mm;
a first discharge port of the wet sieve conveys 10-20mm of materials to the first collection bin to obtain 10-20mm of construction gravel;
a second discharge port of the wet sieve conveys 5-10mm of materials to the second collection bin to obtain 5-10mm of construction gravel;
a third discharge port of the wet sieve conveys the material of 0-5mm to a bailer of the tail mud treatment device, and the bailer sieves the material of 0-5mm into tail mud and particles with the tail mud;
the first discharge port of the bailing machine conveys the particles with the tail mud to a dewatering screen of the tail mud treatment device, and the dewatering screen screens the particles with the tail mud to obtain the tail mud and machine-made sand;
a first discharge hole of the dewatering screen conveys the tail mud to a filter press of the tail mud treatment device to obtain reclaimed soil;
and the second discharge hole of the bailing machine conveys the tail mud to a filter press of the tail mud treatment device to obtain the reclamation soil.
3. The method of claim 1, wherein the crushing pre-screening device comprises: a bar feeder, a jaw crusher and a micro-powder sieve;
the feed inlet of the jaw crusher is communicated with the first discharge outlet of the bar feeder, and the discharge outlet of the jaw crusher is communicated with the feed inlet of the dry crushing pre-screening device;
the feeding hole of the micro-powder sieve is communicated with the second discharging hole of the bar feeder, the first discharging hole of the micro-powder sieve is communicated with the feeding hole of the dry type crushing pre-screening device, and the second discharging hole of the micro-powder sieve is communicated with the wet type screening device.
4. The method of claim 1, wherein the dry-crushing pre-screening device comprises: a middle crusher, a fine crusher and a vibrating screen;
the feed inlet of the middle crusher is communicated with the first discharge outlet of the crushing pre-screening device;
the feed inlet of the fine crusher is communicated with the discharge outlet of the middle crusher, and the first discharge outlet of the fine crusher is communicated with the feed inlet of the vibrating screen;
the first discharge port of the vibrating screen is communicated with the dry screening device, the second discharge port of the vibrating screen is communicated with the first collecting bin, and the third discharge port of the vibrating screen is communicated with the feed port of the fine crusher.
5. The method of claim 1, wherein the dry screening device comprises: a linear sieve, a sand making machine and an air separation chamber;
the feed inlet of the linear screen is communicated with the first discharge outlet of the dry type crushing pre-screening device;
the feeding hole of the sand making machine is communicated with the first discharging hole of the linear sieve, and the discharging hole of the sand making machine is communicated with the feeding hole of the linear sieve;
the air separation chamber is communicated with a second discharge hole of the linear sieve.
6. The method of claim 1, wherein the wet screening device comprises: wet screening;
the feed inlet of wet sieve with the second discharge gate intercommunication of broken pre-screening device, the first discharge gate of wet sieve with first collection storehouse intercommunication, the second discharge gate of wet sieve with the storehouse intercommunication is collected to the second, the third discharge gate of wet sieve with the feed inlet intercommunication of tail mud processing apparatus.
7. The method for dry-wet combined recycling of waste rock of a refuse dump according to claim 1, wherein the tail mud treatment device comprises: a bailing machine, a dewatering screen and a filter press;
the feed inlet of the bailing machine is communicated with the third discharge outlet of the wet screening device;
the feed inlet of the dewatering screen is communicated with the first discharge port of the bailing machine, and the first discharge port of the dewatering screen is communicated with the filter press;
and the feed inlet of the filter press is communicated with the second discharge outlet of the bailing machine.
8. The method of claim 7, wherein the tailings disposal apparatus further comprises: a magnetic separator;
the feed inlet of magnet separator with wet-type screening plant's third discharge gate intercommunication, the first discharge gate of magnet separator with the feed inlet intercommunication of bailing machine.
9. The dry-wet combined recycling method of waste rock of a refuse dump as claimed in claim 7, wherein the dry-wet combined recycling system of waste rock of a refuse dump further comprises: the dry separation device comprises a first dry separator, a second dry separator, a third dry separator, a fourth dry separator and a fifth dry separator;
the feed inlet of the first dry separator is communicated with the first discharge outlet of the crushing pre-screening device, and the first discharge outlet of the first dry separator is communicated with the feed inlet of the dry crushing pre-screening device;
the feed inlet of the second dry separator is communicated with the first discharge outlet of the dry-type crushing pre-screening device, and the first discharge outlet of the second dry separator is communicated with the feed inlet of the first collection bin;
the feed inlet of the third dry separator is communicated with the second discharge outlet of the dry crushing pre-screening device, and the first discharge outlet of the third dry separator is communicated with the feed inlet of the dry screening device;
a feed port of the fourth dry separator is communicated with a first discharge port of the wet screening device, and a first discharge port of the fourth dry separator is communicated with a feed port of the first collection bin;
the feed inlet of the fifth dry separator is communicated with the second discharge outlet of the wet screening device, and the first discharge outlet of the fifth dry separator is communicated with the feed inlet of the second collection bin.
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| CN101693928B (en) * | 2009-10-16 | 2011-03-16 | 首钢总公司 | Method for purifying primarily selected slag steel |
| CN105498951B (en) * | 2014-11-19 | 2017-12-22 | 晋江市冠兴建材有限责任公司 | A kind of environment-friendly type cinder recovery and processing system |
| CN105880003B (en) * | 2016-05-27 | 2018-06-05 | 马鞍山市天工科技股份有限公司 | A kind of magnetic iron ore is without screening high pressure roller mill dry type magnetic separation method |
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| CN109865588A (en) * | 2019-04-12 | 2019-06-11 | 中冶北方（大连）工程技术有限公司 | A kind of transition zone mixing iron ore beneficiation technique |
| CN212524447U (en) * | 2020-01-08 | 2021-02-12 | 山东省冶金设计院股份有限公司 | Mixed processing system for magnetite crushing and sand aggregate preparation from waste rocks |
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