CN110252778A - Shield landwaste recycling and reusing system and method - Google Patents

Shield landwaste recycling and reusing system and method Download PDF

Info

Publication number
CN110252778A
CN110252778A CN201910647942.1A CN201910647942A CN110252778A CN 110252778 A CN110252778 A CN 110252778A CN 201910647942 A CN201910647942 A CN 201910647942A CN 110252778 A CN110252778 A CN 110252778A
Authority
CN
China
Prior art keywords
hydrocyclone
landwaste
mud
shield
recycling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910647942.1A
Other languages
Chinese (zh)
Inventor
余承晔
冯洪阳
邱伟权
余洪强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Honghua Environmental Protection Technology Co Ltd
Original Assignee
Shenzhen Honghua Environmental Protection Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Honghua Environmental Protection Technology Co Ltd filed Critical Shenzhen Honghua Environmental Protection Technology Co Ltd
Priority to CN201910647942.1A priority Critical patent/CN110252778A/en
Publication of CN110252778A publication Critical patent/CN110252778A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00Destroying solid waste or transforming solid waste into something useful or harmless
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B5/00Operations not covered by a single other subclass or by a single other group in this subclass

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a kind of shield landwaste recycling and reusing system and methods, including separating screen device, and separating screen device is cooperated to be separately installed with the first mud channel and impact grinding device;First mud channel is communicated with conveying slurry can;Cooperation impact grinding device is equipped with grinding crushing device, and cooperation grinding crushing device is equipped with sand grains spray agitating device;Sand grains, which sprays agitating device, which starches pipeline connection by sand grains, hydrocyclone;The slurry outlet of hydrocyclone bottom is connected to slurry can by the second mud channel;The sand export of cooperation hydrocyclone is equipped with mixing device;Slush pump is mounted on first mud channel and the second mud channel.The landwaste generated during shield and mud are quickly sufficiently separated by the present invention, and the landwaste therein for being not suitable for making gravel is made into sand grains, and it crushes dissolution and excludes mud shale particle, so that landwaste does not need to be filled again, transportation cost is saved, environmental pollution is reduced and improves economic benefit.

Description

Shield landwaste recycling and reusing system and method
Technical field
The invention belongs to waste recovery field more particularly to a kind of shield landwaste recycling and reusing system and methods.
Background technique
With the rapidly development of urban construction, traffic above-ground increasingly congestion, the problems such as occupying human normal life soil is prominent Out, demand of the people to the development and utilization of the underground space is more and more.Economic strength has been further consolidated in China, and various regions track is handed over Logical construction starts one after another, the urban rail transit construction planning in the multiple cities in the whole nation of National Development and Reform Committee's reply in recent years.In existing shield In structure equipment, it is wide that slurry balance shield machine with it is applicable in geology range, and advanced control is current state-of-the-art Suporting structure, in mud The pressure of face is controlled during water balance shield-tunneling construction by mud, transports the dregs generated in mining process, high quality Shield slurry be the premise for guaranteeing engineering and going on smoothly, the processing of mud is most important.
But shield-tunneling construction generates a large amount of mud, and the dregs mud containing rate screened out is high, water content is big, loosely organized, and companion It is starched with a large amount of abandon is generated.Dregs particulate cascade after only screening and this processing method separate is unclear, so that can not Component valuable in dregs is recycled.It is all logical at present for the dregs of such high mud containing rate, high-moisture A large amount of vehicle transport to special dregs stacking field is crossed to be stored.Inevitably exist during transportation and spreads on a small quantity Leakage, will generate to environment after subsidiary mud evolution can cause fugitive dust after certain pollution or even mud air-dry and cause air Quality decline.It is directly discarded in addition, generating a large amount of waste pulp in work progress, consumes a large amount of water resource, also brought to environment Very big burden.
Application number 201310397192.X provides one kind and discloses a kind of shield body refuse Recovery Purifying reutilization system use In the method for Shield Construction Method Used, which includes slip agitating tank, blender, hydrocyclone, slurry can, mortar stirring It stands, waste stacks field and pipeline composition;The body refuse that the present invention generates shield-tunneling construction is synchronous as shield after Recovery Purifying The raw material of slip casting reuse, and solve the problems, such as that body refuse discarding amount is big in previous shield-tunneling construction, pollute environment and shield The problem of raw materials consumptions amount such as synchronous grouting bentonite, bentonite consumption is saved, has reduced dirt of the discarded body refuse to environment Dye, reduces shield-tunneling construction cost.
But above-mentioned process is only applicable to the construction of sedimentation layer and then can not for the processing of rock base layer construction landwaste Reach efficient resource utilization.Because of a large amount of landwaste that shield-tunneling construction generates, circular knife generally is equipped with due to digging hard rock shield machine Disk causes Rock Cutting fragment mechanism larger, flaky, these chip sizes are even lower than being about 30:15:1 Extreme dimensional.The conventional method being crushed for manufacturing engineering rubble is such as taken, broken shield clast rubble is not usually to manage The grain shape thought but sheet-like particle.Since single particle strength is a principal element of material entirety, these sheets it is broken Stone particle tends to horizontal direction in positioning and precipitates to form water pocket, so that concrete structure grade reduces.Simultaneously because particle lacks Weary rough surface and grain shape with angle, reduce and are stained with knot power between aggregate and cement, reduce the work energy of mixture Power and the demand for increasing water consumption need to increase cement content, substantially increase cost to keep quality.Therefore, it generates Cutting landwaste cannot be processed into the rubble of construction substantially, and a large amount of abandon is needed to fill.Cause a large amount of transportation cost and environment Pollution.
Secondly, shield-tunneling construction work often includes, since its intensity is low and hygroscopy, being not suitable for carrying out work with mud shale clast Cheng Zaosha, it is necessary to exclude in process, to reduce the influence to sandy amount is made.
Summary of the invention
In order to solve the above technical problems, the invention discloses a kind of shield landwaste recycling and reusing system and methods.This hair It is bright to be quickly sufficiently separated the landwaste generated during shield and mud, and landwaste therein is made into sand grains and in technique Exclude mud shale clast and so that landwaste does not need to be filled again save transportation cost, reduce environmental pollution and Improve economic benefit.
To achieve the above object, technical scheme is as follows:
A kind of shield landwaste recycling and reusing method, includes the following steps:
Step 1: importing separating screen device 1 for shield body refuse, sifts out cutting grain and the mud of screening is passed through the first mud Pipeline 2 conveys slurry can 3;
Step 2: cutting grain is delivered to impact grinding device 4, by debris breaker at granulated at landwaste crushed particles, And mud shale then slabbing page fragment;
Step 3: being delivered to grinding crushing device 5 for debris breaker particle and debris breaker particle be ground into sand grains, and mud Shale is then ground into mud substantially;
Step 4: sand grains spray stirring rinses and forms mortar;
Step 5: mortar, which is transported to hydrocyclone 6, obtains filtering sand and mud;Mud passes through the second mud channel 7 Slurry can 3 is conveyed, regenerated mud is used for
Step 6: filtering sand is transported to mixing device 8, mixing manufacture concrete.
Through the above steps, it by after landwaste and mud initial gross separation, is crushed by subsequent impact grinding device 4 and grinding Landwaste is fabricated to the grit in order to be suitble to concrete and improves economic benefit to reduce landfill cost by device 5.And Mud therein is also sufficiently separated storage in the process.
Further to improve, the hydrocyclone 6 includes the first hydrocyclone 65 and the second hydrocyclone 66;The The slurry outlet 61 of one hydrocyclone 65 is in right above the feed inlet of the second hydrocyclone 66;First hydrocyclone sieve Diameter grain≤2mm gravel out, the second Swirling flow sand-removing implements are to sift out diameter grain≤0.05mm material.
Further to improve, the impact grinding device is impact crusher.
Further to improve, the grinding crushing device is ball mill.
Further to improve, the mixing device 8 is concrete mixer.
A kind of shield landwaste recycling and reusing system, including separating screen device 1, cooperation separating screen device 1 are separately installed with first Mud channel 2 and impact grinding device 4;First mud channel 2 is communicated with conveying slurry can 3;Impact grinding device 4 is cooperated to install There is grinding crushing device 5, cooperation grinding crushing device 5 is equipped with sand grains spray agitating device 9;It is logical that sand grains sprays agitating device 9 It crosses sand grains slurry pipeline 96 and is communicated with hydrocyclone 6;The slurry outlet 61 of 6 bottom of hydrocyclone passes through the second mud channel 7 It is connected to slurry can 3;The sand export 63 of cooperation hydrocyclone 6 is equipped with mixing device 8;First mud channel 2 and the second mud Slush pump 64 is mounted on pipeline 7.
Further to improve, the impact grinding device is impact crusher;The grinding crushing device is ball mill; The mixing device 8 is concrete mixer;The hydrocyclone 6 includes the first hydrocyclone 65 and the second Swirling flow sand-removing Device 66;The slurry outlet 61 of first hydrocyclone 65 is in right above the feed inlet of the second hydrocyclone 66;First eddy flow Desander sifts out the gravel that diameter grain is more than or equal to 2mm, and the second Swirling flow sand-removing implements are the object for sifting out diameter grain and being more than or equal to 0.05mm Material.
Further to improve, the separating screen device 1 includes the sieve 11 being obliquely installed, and is equipped with vibrator on sieve 11 12,11 lower end of sieve is coupled impact grinding device 4;11 bottom of sieve is equipped with broach hopper 13, broach hopper 13 and The connection of one mud channel 2;The discharge outlet of 4 bottom of impact grinding device is right above the feed inlet of grinding crushing device 5;Grinding The discharge outlet of crushing device 5 is right above the feed inlet of sand grains spray agitating device 9.
Further to improve, the sand grains spray agitating device 9 includes shell 91, is equipped with shaft 92 in shell 91, turns Paddle 93 is installed on axis 92;Feed inlet 94 and spray head 95 are installed at the top of shell 91;91 bottom of shell is communicated with sand grains Pipeline 96 is starched, slurries pump 97 is installed on sand grains slurry pipeline 96;Shaft 92 is connected with motor 98.
It is further to improve, conveyer belt 10 is installed between the sand export 63 and mixing device 8 of the hydrocyclone 6.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
The invention will be further described with reference to embodiments.
Embodiment 1
A kind of shield landwaste recycling and reusing system as shown in Figure 1, including separating screen device 1, cooperation separating screen device 1 are distinguished First mud channel 2 and impact grinding device 4 are installed;First mud channel 2 is communicated with conveying slurry can 3;Cooperate impact cutting Crushing device 4 is equipped with grinding crushing device 5, and cooperation grinding crushing device 5 is equipped with sand grains spray agitating device 9;Sand grains spray Agitating device 9 starches pipeline 96 by sand grains and is communicated with hydrocyclone 6;The slurry outlet 61 of 6 bottom of hydrocyclone passes through the Two mud channels 7 are connected to slurry can 3;The sand export 63 of cooperation hydrocyclone 6 is equipped with mixing device 8;First mud channel 2 Slush pump 64 is mounted on on the second mud channel 7.
Impact grinding device is impact crusher;The grinding crushing device is ball mill;The mixing device 8 is mixed Solidifying soil blender.
Separating screen device 1 includes the sieve 11 being obliquely installed, and vibrator 12,11 lower end of sieve cooperation peace are equipped on sieve 11 Fill impact grinding device 4;11 bottom of sieve is equipped with broach hopper 13, and broach hopper 13 is connected to the first mud channel 2;Impact The discharge outlet of 4 bottom of crushing device is right above the feed inlet of grinding crushing device 5;Grind the discharge outlet of crushing device 5 Right above the feed inlet of sand grains spray agitating device 9.
It includes shell 91 that sand grains, which sprays agitating device 9, is equipped with shaft 92 in shell 91, is equipped with paddle in shaft 92 93;Feed inlet 94 and spray head 95 are installed at the top of shell 91;91 bottom of shell is communicated with sand grains slurry pipeline 96, and sand grains starches pipeline Slurries pump 97 is installed on 96;Shaft 92 is connected with motor 98.
Conveyer belt 10 is installed between the sand export 63 and mixing device 8 of hydrocyclone 6.
The usage mode of above-mentioned apparatus is as follows: a kind of shield landwaste recycling and reusing method includes the following steps:
Step 1: importing separating screen device 1 for shield body refuse, sifts out cutting grain and the mud of screening is passed through the first mud Pipeline 2 conveys slurry can 3;
Step 2: cutting grain is delivered to impact grinding device 4, by debris breaker at granulated at landwaste crushed particles;
Step 3: debris breaker particle is delivered to grinding crushing device 5, debris breaker particle is ground into sand grains;
Step 4: sand grains spray stirring rinses and forms mortar;
Step 5: mortar, which is transported to hydrocyclone 6, obtains filtering sand and mud;Mud passes through the second mud channel 7 Slurry can 3 is conveyed, regenerated mud is used for
Step 6: filtering sand is transported to mixing device 8, mixing manufacture concrete.
Embodiment 2
Do following improvement on the basis of embodiment 1: hydrocyclone 6 includes the first hydrocyclone 65 and the second eddy flow Desander 66;The slurry outlet 61 of first hydrocyclone 65 is in right above the feed inlet of the second hydrocyclone 66;First Hydrocyclone sifts out diameter grain≤2mm gravel, and the second Swirling flow sand-removing implements are to sift out diameter grain≤0.05mm material.
In this way will
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention Technical spirit any modification, change and equivalent structure transformation to the above embodiments, still belong to technical solution of the present invention Protection scope.

Claims (10)

1. a kind of shield landwaste recycling and reusing method, which comprises the steps of:
Step 1: importing separating screen device (1) for shield body refuse, sifts out cutting grain and the mud of screening is passed through the first mud tube Road (2) conveys slurry can (3);
Step 2: cutting grain is delivered to impact grinding device (4), by debris breaker at granulated at landwaste crushed particles;
Step 3: debris breaker particle is delivered to grinding crushing device (5), debris breaker particle is ground into sand grains;
Step 4: sand grains spray stirring rinses and forms mortar;
Step 5: mortar, which is transported to hydrocyclone (6), obtains filtering sand and mud;Mud passes through the second mud channel (7) It conveys slurry can (3), is used for regenerated mud
Step 6: filtering sand is transported to mixing device (8), mixing manufacture concrete.
2. shield landwaste recycling and reusing method as described in claim 1, which is characterized in that shield landwaste recycling and reusing side Method, which is characterized in that the hydrocyclone (6) includes the first hydrocyclone (65) and the second hydrocyclone (66);The The slurry outlet (61) of one hydrocyclone (65) is in right above the feed inlet of the second hydrocyclone (66);First eddy flow removes Sand device sifts out diameter grain " gravel of 2mm, the second Swirling flow sand-removing implements are to sift out diameter grain " material of 0.05mm.
3. shield landwaste recycling and reusing method as described in claim 1, which is characterized in that the impact grinding device is punching Impact crusher.
4. shield landwaste recycling and reusing method as described in claim 1, which is characterized in that the grinding crushing device is ball Grinding machine.
5. shield landwaste recycling and reusing method as described in claim 1, which is characterized in that the mixing device (8) is mixed Solidifying soil blender.
6. a kind of shield landwaste recycling and reusing system, which is characterized in that including separating screen device (1), cooperate separating screen device (1) point First mud channel (2) and impact grinding device (4) are not installed;First mud channel (2) is communicated with conveying slurry can (3); Cooperation impact grinding device (4) is equipped with grinding crushing device (5), and cooperation grinding crushing device (5) is equipped with sand grains spray and stirs Mix device (9);Sand grains sprays agitating device (9) and is communicated with hydrocyclone (6) by sand grains slurry pipeline (96);Hydrocyclone (6) slurry outlet (61) of bottom passes through the second mud channel (7) connection slurry can (3);Cooperation hydrocyclone (6) is shaked out Mouth (63) is equipped with mixing device (8);Slush pump (64) are mounted on first mud channel (2) and the second mud channel (7).
7. shield landwaste recycling and reusing system as claimed in claim 6, which is characterized in that the impact grinding device is punching Impact crusher;The grinding crushing device is ball mill;The mixing device (8) is concrete mixer;The eddy flow removes Sand device (6) includes the first hydrocyclone (65) and the second hydrocyclone (66);The mud of first hydrocyclone (65) goes out Mouth (61) is in right above the feed inlet of the second hydrocyclone (66);First hydrocyclone sifts out diameter grain " gravel of 2mm, Second Swirling flow sand-removing implements are to sift out diameter grain " material of 0.05mm.
8. shield landwaste recycling and reusing method as claimed in claim 6, which is characterized in that the separating screen device (1) includes The sieve (11) being obliquely installed is equipped with vibrator (12) on sieve (11), and sieve (11) lower end is coupled impact grinding dress Set (4);Sieve (11) bottom is equipped with broach hopper (13), and broach hopper (13) is connected to the first mud channel (2);Impact cutting The discharge outlet of crushing device (4) bottom is right above the feed inlet of grinding crushing device (5);Grind the discharging of crushing device (5) Right above feed inlet of the mouth in sand grains spray agitating device (9).
9. shield landwaste recycling and reusing method as claimed in claim 6, which is characterized in that the sand grains sprays agitating device (9) include shell (91), be equipped with shaft (92) in shell (91), paddle (93) are installed in shaft (92);Shell (91) Top is equipped with feed inlet (94) and spray head (95);Shell (91) bottom is communicated with sand grains slurry pipeline (96), and sand grains starches pipeline (96) slurries pump (97) is installed on;Shaft (92) is connected with motor (98).
10. shield landwaste recycling and reusing method as claimed in claim 6, which is characterized in that the hydrocyclone (6) Conveyer belt (10) are installed between sand export (63) and mixing device (8).
CN201910647942.1A 2019-07-18 2019-07-18 Shield landwaste recycling and reusing system and method Pending CN110252778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910647942.1A CN110252778A (en) 2019-07-18 2019-07-18 Shield landwaste recycling and reusing system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910647942.1A CN110252778A (en) 2019-07-18 2019-07-18 Shield landwaste recycling and reusing system and method

Publications (1)

Publication Number Publication Date
CN110252778A true CN110252778A (en) 2019-09-20

Family

ID=67926840

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910647942.1A Pending CN110252778A (en) 2019-07-18 2019-07-18 Shield landwaste recycling and reusing system and method

Country Status (1)

Country Link
CN (1) CN110252778A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114260106A (en) * 2021-12-21 2022-04-01 成理科技(成都)股份有限公司 Earth pressure balance shield muck grading treatment system
CN115721974A (en) * 2023-01-28 2023-03-03 中铁电气化局集团有限公司 Slurry circulation preparation grouting system behind shield muck wall

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104912505A (en) * 2015-05-26 2015-09-16 成都高普石油工程技术有限公司 Method capable of being used for simultaneously separating detritus and medium-fine sand from waste drilling fluid
CN106623368A (en) * 2017-01-07 2017-05-10 长沙锦佳环保科技有限公司 Innocent treatment method for shield tunneling residue soil
CN206255993U (en) * 2016-08-25 2017-06-16 北京华油兴业能源技术有限公司 The harmless treatment of drilling well rock and recycling equipment
CN206483795U (en) * 2017-01-07 2017-09-12 长沙锦佳环保科技有限公司 A kind of shield dregs innocuity disposal system
CN108080396A (en) * 2017-12-14 2018-05-29 付朝品 A kind of primary dregs regeneration method
CN108129041A (en) * 2017-12-29 2018-06-08 嘉华特种水泥股份有限公司 Utilize the preparation method of oil base well drilling detritus burning silicate cement clinker
CN211587914U (en) * 2019-07-18 2020-09-29 深圳市洪桦环保科技有限公司 Shield debris recycling system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104912505A (en) * 2015-05-26 2015-09-16 成都高普石油工程技术有限公司 Method capable of being used for simultaneously separating detritus and medium-fine sand from waste drilling fluid
CN206255993U (en) * 2016-08-25 2017-06-16 北京华油兴业能源技术有限公司 The harmless treatment of drilling well rock and recycling equipment
CN106623368A (en) * 2017-01-07 2017-05-10 长沙锦佳环保科技有限公司 Innocent treatment method for shield tunneling residue soil
CN206483795U (en) * 2017-01-07 2017-09-12 长沙锦佳环保科技有限公司 A kind of shield dregs innocuity disposal system
CN108080396A (en) * 2017-12-14 2018-05-29 付朝品 A kind of primary dregs regeneration method
CN108129041A (en) * 2017-12-29 2018-06-08 嘉华特种水泥股份有限公司 Utilize the preparation method of oil base well drilling detritus burning silicate cement clinker
CN211587914U (en) * 2019-07-18 2020-09-29 深圳市洪桦环保科技有限公司 Shield debris recycling system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114260106A (en) * 2021-12-21 2022-04-01 成理科技(成都)股份有限公司 Earth pressure balance shield muck grading treatment system
CN114260106B (en) * 2021-12-21 2024-04-02 成理科技(成都)股份有限公司 Classification treatment system for earth pressure balance shield dregs
CN115721974A (en) * 2023-01-28 2023-03-03 中铁电气化局集团有限公司 Slurry circulation preparation grouting system behind shield muck wall
CN115721974B (en) * 2023-01-28 2023-04-04 中铁电气化局集团有限公司 Slurry circulation preparation grouting system behind shield muck wall

Similar Documents

Publication Publication Date Title
CN109057815B (en) Comprehensive recycling system for earth pressure balance shield slag soil and sewage
CN104446022B (en) A kind of prepared from steel slag is for the method for Steel-slag Sand, activation ground-slag and RO phase
CN101482005B (en) Down-hole gross coal dirt-discharging and mine water treating combined process
Lu et al. Disposal methods on solid wastes from mines in transition from open-pit to underground mining
CN103480483B (en) A kind of phosphorus ore heavymedia separation and direct reverse flotation process integration
JP4676245B2 (en) Method for producing recycled fine aggregate, and recycled fine aggregate
CN207025526U (en) A kind of barren rock Machine-made Sand production system
CN102500462B (en) Rutile roughing technology consisting of selective ore grinding, coarse particle gravity separation and fine particle floatation
CN101513625B (en) Overall utilization and treating process of iron ore mine
CN107298561A (en) A kind of iron tailings barren rock resource utilization method
CN103102090B (en) Device of resource treatment system with combination of building waste residue and grinding and using method thereof
CN109046753A (en) A kind of high mud viscosity earth's surface is red, magnetic mixing iron ore beneficiation technique
CN110354989A (en) A kind of low-grade outdoor efficient tailings discarding by preconcentration method of lava iron ore
CN105884228A (en) Process for preparing high-performance composite concrete from mineral powder, machine-made sand and waste concrete
CN109265032A (en) A method of Machine-made Sand is prepared using stone pit rejects
CN109865588A (en) A kind of transition zone mixing iron ore beneficiation technique
CN110252778A (en) Shield landwaste recycling and reusing system and method
CN216423035U (en) TBM back-stoping movable sand mixing and lining complete device
CN112521119A (en) Preparation method and filling system of coal-based solid waste filling paste
CN115138464A (en) Preparation method of sandstone capable of simultaneously processing natural gravel material and artificial aggregate
CN111282953B (en) Comprehensive recycling device and method for asphalt pavement resources
CN211587914U (en) Shield debris recycling system
CN209968608U (en) Limestone processing system
CN203173995U (en) Device for building waste residue associated grinding resource processing system
CN101734892A (en) Method for recycling waste concrete

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination