CN102009059A - Construction waste comprehensive treatment method - Google Patents
Construction waste comprehensive treatment method Download PDFInfo
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- CN102009059A CN102009059A CN2010105079721A CN201010507972A CN102009059A CN 102009059 A CN102009059 A CN 102009059A CN 2010105079721 A CN2010105079721 A CN 2010105079721A CN 201010507972 A CN201010507972 A CN 201010507972A CN 102009059 A CN102009059 A CN 102009059A
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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
- Y02W30/58—Construction or demolition [C&D] waste
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Abstract
The invention discloses a construction waste comprehensive treatment method which comprises the following steps: primary crushing, sorting, primary magnetic separation, secondary crushing, secondary magnetic separation, primary screening, tertiary crushing and tertiary screening. The construction waste comprehensive treatment method can be used for thoroughly sorting foreign matters in the construction waste, thereby enhancing the quality of the regenerative aggregate. The invention has the advantages of reasonable procedure arrangement, low labor consumption and high efficiency, and is simple to operate. When being used for treating construction waste, the method has the social benefits of saving land resources and reducing environmental pollution.
Description
Technical field
The present invention relates to the building waste processing technology field.
Background technology
Along with quickening of urbanization process, the building waste that urban construction, reconstruction of the old city town produce has become big public hazards in city.Show that according to relevant data China is about more than 200,000,000 tons because of the solid waste of removing the building generation every year at present, about 100,000,000 tons of the solid waste that new building produces, two add up to about 300,000,000 tons.China's existing building 40,000,000,000 square meters, life cycle according to building was calculated in 100 years, average annual building demolition 400,000,000 square meters, average annual 500000000 tons of the building wastes that produce, the building waste that adds generations such as construction, construction and decoration adds up to about 600,000,000 tons/year, in fact owing to reasons such as building durability, urban planning changes, the building life cycle often promptly was removed less than 100 years, in addition, construction area also will constantly enlarge with social development, and the average annual output of China's building castoff will be greater than 600,000,000 tons from now on.
And the building waste overwhelming majority of present China flood tide like this is without any processing, just transport countryside or rural area to, adopt random air storage or directly the mode of landfill handle, not only taken up an area of but also contaminated environment, form the phenomenon that rubbish encloses village, besieged city, have a strong impact on the town and country image.Along with protecting farmland and the reinforcement of environmental protection, the processing mode of traditional building waste has become the major issue that enterprise in charge of construction and environmental administration face jointly.
Also there is the building waste of employing treatment process that building waste is handled at present, but existing treatment process imperfection, the regeneration aggregate granularity inequality after the big multiprocessing, range of application is restricted.And owing to contain a large amount of metal species, bamboo wood class and plastics class foreign material in the building waste, wherein bamboo wood class and plastics class foreign material are after the building waste fragmentation, be blended in the regeneration aggregate, to making load-bearing class building material made, can reduce intensity, and the metal species foreign material generally are difficult to fragmentation, stay and cause equipment to stop up in the treatment process process easily, therefore and shutdown maintenance influences production process the equipment that influences normally uses even, if the metal species foreign material are blended in the regeneration aggregate of producing, also can influence the processing and the final quality of building material made.And the processing method of existing building rubbish does not sort bamboo wood class and plastics class foreign material, only the metal species foreign material is carried out magnetic separation, and that the magnetic separation step is arranged is unreasonable, and the concentration equipment that adopts not only cost height but also separating effect are undesirable.
Summary of the invention
Technical problem to be solved by this invention is: a kind of method for comprehensive treatment of construction refuse is provided, to the letter sorting of the foreign material in the building waste thoroughly, improve the quality of regeneration aggregate, and the processing step arrangement is reasonable, simple to operate, recruitment is few, efficient is high, use the present invention that building waste is handled, realized economizing the land resource, alleviating the social benefit of environmental pollution.
For solving the problems of the technologies described above, technical scheme of the present invention is: method for comprehensive treatment of construction refuse comprises following treatment step:
(1) one-level fragmentation: building waste is sent into the one-level disintegrating machine carry out fragmentation, output to sorting equipment then;
(2) letter sorting: by sorting equipment the foreign material in the building waste are sorted removal, and the building waste after will sorting outputs to the one-level concentration equipment;
(3) one-level magnetic separation: with the one-level concentration equipment metal species foreign material in the building waste are carried out magnetic separation and reject, and the building waste after the magnetic separation is outputed to secondary breaker;
(4) two-stage crushing: with secondary breaker building waste is carried out fragmentation once more, output to the secondary magnetic separation device then;
(5) secondary magnetic separation: with the secondary magnetic separation device the further magnetic separation of the metal species foreign material in the building waste is rejected, and the building waste after the magnetic separation is outputed to first grading oscillating screen;
(6) one-level screening: with first grading oscillating screen building waste is sieved, obtain coarse aggregate, fine aggregate and stone flour.
As a kind of optimized technical scheme, also comprise the following treatment step that coarse aggregate that one-level screening step is obtained carries out:
(7) three grades of fragmentations: coarse aggregate is sent into tertiary crusher carry out fragmentation once more, output to second grading oscillating screen then;
(8) secondary screening: sieve acquisition fine aggregate and stone flour with the coarse aggregate of second grading oscillating screen after to three grades of fragmentations.
As a kind of optimized technical scheme, described sorting equipment comprises primary conveyor and is connected the one-level vibratory sieve of the material output be arranged at described primary conveyor, and described one-level vibratory sieve comprises supports, is arranged at the feeding groove in the described support and is fixedly set in compass screen surface above the described feeding groove by fork is hinged.
As a kind of optimized technical scheme, described one-level disintegrating machine is a jaw crusher, and in floor projection, the length direction of the discharge gate of described jaw crusher is consistent with the mass transport direction of described primary conveyor.
As a kind of optimized technical scheme, described one-level concentration equipment and described secondary magnetic separation device include the two-stage conveying machine, described two-stage conveying machine comprise first roller, second roller and be surrounded on described first roller and described second roller on conveyer belt, described second roller is positioned at the material output of described two-stage conveying machine, and described second roller is provided with magnetic and inhales the iron device.
As a kind of optimized technical scheme, described second roller comprises roller axle and the roller body that is set on the described roller axle, and described magnetic is inhaled the iron device and comprised the magnet that is arranged at described roller body inside.
As a kind of optimized technical scheme, be disposed with fixed head in the internal circumferential of described roller body, be provided with dividing plate at described fixed head near a side of described roller body inwall, described magnet is fixed on the described dividing plate and with described roller body inwall and reclines.
As a kind of optimized technical scheme, described secondary breaker is hammer mill or impact breaker, and described tertiary crusher is a double-roll crusher.
After having adopted technique scheme, the invention has the beneficial effects as follows:
1. use the present invention to carry out building waste and handle, saved land resource, alleviated pollution environment; Cost of material is low, and the renewable building aggregate of producing can be used for production building block or decorative block etc., the product strength height, and quality is good, the economic benefit height.
2. the present invention has adopted three grades of broken steps, just can obtain coarse aggregate, fine aggregate and stone flour through behind the two-stage crushing, for wherein coarse aggregate as required, can proceed break process through three grades of broken steps again, to satisfy the practical application needs, the present invention is thoroughly broken, and the renewable building aggregate size of producing is even, all can reach instructions for use, applied range.
3. the present invention is provided with separation step to big metal species after the broken step of one-level, bamboo wood class and plastics class foreign material sort removal, one-level magnetic separation step is set after separation step, the metal species foreign material are carried out magnetic separation to be removed, the secondary magnetic separation step is set after the two-stage crushing step, further magnetic separation is rejected to the metal species foreign material, therefore, the present invention to fragmentation after metal species in the building waste, bamboo wood class and plastics class foreign material all can thoroughly sort rejecting, not only guaranteed carrying out smoothly of each processing step, and guaranteed the purity of regeneration aggregate, guaranteed the intensity and the quality of the building material made be processed into regeneration aggregate.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the FB(flow block) of the embodiment of the invention;
Fig. 2 is the part-structure schematic diagram of device therefor in the embodiment of the invention;
Fig. 3 is the part-structure schematic diagram of device therefor in the embodiment of the invention;
Fig. 4 is that the discharge gate of one-level disintegrating machine in the embodiment of the invention and the position of primary conveyor concern schematic diagram;
Fig. 5 is the axial cutaway view of second roller in the embodiment of the invention;
Fig. 6 is the transverse sectional view of second roller in the embodiment of the invention.
Among the figure: 11. one-level disintegrating machines, 111. spouts, 112. discharge gates, 12. primary conveyor, 13. one-level vibratory sieves, 131. support, 132. feeding groove, 133. compass screen surfaces, 134. forks, 21. the one-level concentration equipment, 22. secondary breakers, 23. secondary magnetic separation devices, 24. first grading oscillating screen, 251. first rollers, 252. second rollers, 2521. roller axle, 2522. roller body, 2523. magnets, 2524. fixed heads, 2525. dividing plate, 253. conveyer belt, 31. 3 grades of feeding conveyors, 32. tertiary crushers, 33. three grades of outfeed belt conveyors, 34. second grading oscillating screens.
The specific embodiment
Shown in Fig. 1 to Fig. 3 is common, a kind of integrated conduct method of building waste, it comprises following treatment step:
(1) one-level fragmentation: the building waste raw material is sent into one-level disintegrating machine 11 carry out fragmentation, the discharge gate 112 by one-level disintegrating machine 11 outputs to sorting equipment then.Wherein, the preferential jaw crushers that adopt of one-level disintegrating machine 11 can broken bigger building waste, and the regeneration aggregate fineness ratio after the fragmentation is more even.One-level disintegrating machine 11 is provided with the spout 111 of inclination, can directly building waste be sent into spout 111 by loading machine.
(2) letter sorting: by sorting equipment the metal species in the building waste, bamboo wood class and plastics class foreign material are sorted removal, and the building waste after will sorting outputs to one-level concentration equipment 21.Wherein, described sorting equipment comprises primary conveyor 12 and is connected the one-level vibratory sieve 13 of the material output that is arranged at primary conveyor 12, this one-level vibratory sieve 13 comprise support 131, by the fork 134 hinged compass screen surfaces 133 that support the feeding groove 132 on 131 and be fixedly set in feeding groove 132 tops that are arranged at.As shown in Figure 4, close the installation site of jaw crusher and primary conveyor 12: in floor projection, the length direction of the discharge gate 112 of jaw crusher is consistent with the mass transport direction of primary conveyor 12, adopt said structure, the smooth delivery of power that helps the longer and narrower stone that contains in the building waste after the one-level fragmentation, big reinforcing bar, iron block, wooden unit etc., be difficult for stopping up discharge gate, improved the processing speed of processing horizontal and equipment greatly.Building waste is after the broken step of one-level, be transported to one-level vibratory sieve 13 through primary conveyor 12 again, big reinforcing bar, wood chip and other foreign material etc. sift out by compass screen surface 133, be convenient to the workman and choose rejecting, and the sieve aperture of reproducible building aggregate by compass screen surface 133 drains in the feeding groove 132, vibration output then, this sorting equipment letter sorting is satisfactory for result, has guaranteed carrying out smoothly of subsequent processing
(3) one-level magnetic separation: carry out magnetic separation with the metal species foreign material in 21 pairs of building wastes of one-level concentration equipment and reject, and the building waste after the magnetic separation is outputed to secondary breaker 22.Wherein, one-level concentration equipment 21 comprises the two-stage conveying machine, described two-stage conveying machine comprises first roller 251, second roller 252 and is surrounded on conveyer belt 253 on two rollers, described second roller 252 is positioned at the material output of two-stage conveying machine, and second roller 252 is provided with magnetic and inhales the iron device.Shown in Fig. 4 and Fig. 5 were common, in the present embodiment, second roller 252 comprised roller axle 2521 and is set in roller body 2522 on the roller axle 2521 that described magnetic is inhaled the iron device and comprised the magnet 2523 that is arranged at roller body 2522 inside.The concrete installation method of magnet 2523: the internal circumferential at described roller body 2522 is disposed with fixed head 2524, side at fixed head 2524 close roller body 2522 inwalls is provided with dividing plate 2525, and described magnet is fixed on the dividing plate 2525 and with roller body 2522 inwalls and reclines.In this step, building waste after the sorting equipment letter sorting outputs to the two-stage conveying machine, when being transported to terminal second roller 252 places, inhale in magnetic under the magnetic action of iron device, metal species foreign material such as reinforcing bar wherein, iron block are attracted on the conveyer belt of second roller, 252 outsides, after this part conveyer belt turns over second roller 252, magnetic disappears, the metal species foreign material drop, and then are sorted out, and building waste then is output in the secondary breaker 22.
(4) two-stage crushing: carry out fragmentation once more with 22 pairs of building wastes of secondary breaker, the discharge gate by secondary breaker 22 outputs to secondary magnetic separation device 23 then.Wherein, described secondary breaker 22 preferential hammer mill or the impact breakers of adopting, pattern is high box, can add the bigger material of labor and materials body, breaking capacity is strong, the output height.
(5) secondary magnetic separation: reject with the further magnetic separation of the metal species foreign material in 23 pairs of building wastes of secondary magnetic separation device, and the building waste after the magnetic separation is outputed to first grading oscillating screen 24.Wherein, secondary magnetic separation device 23 structures are identical with one-level concentration equipment structure with operation principle, no longer do specific descriptions.
(6) one-level screening: sieve with 24 pairs of building wastes of first grading oscillating screen, obtain coarse aggregate, fine aggregate and stone flour.In the present embodiment, first grading oscillating screen 24 has three layers of compass screen surface, can carry out the level Four screening, can obtain the coarse aggregate of big particle diameter, the fine aggregate and the stone flour of two kinds of particle diameters.
Also comprise the following treatment step that coarse aggregate that one-level screening step is obtained carries out:
(7) three grades of fragmentations: coarse aggregate is sent into tertiary crusher 32 with three grades of feeding conveyors 31 carry out fragmentation once more, output to second grading oscillating screen 34 with three grades of outfeed belt conveyors 33 then.Wherein, the described tertiary crusher 32 preferential double-roll crushers that adopt, material feeds from two rollers top, is extruded roller and brings into continuously between roller, be subjected to the high pressure effect of 50-200MPa after, discharge down with desirable granularity slave.
(8) secondary screening: sieve with the coarse aggregate after 34 pairs of three grades of fragmentations of second grading oscillating screen, obtain fine aggregate and stone flour.Wherein, second grading oscillating screen 34 is for having the long sieve of one deck compass screen surface, and the front portion is provided with the path sieve aperture, and the rear portion is provided with big footpath sieve aperture, sieves out stone flour and fine aggregate respectively, after all kinds of big wood chip foreign material are exported in the end of long sieve.
Use method for comprehensive treatment of construction refuse of the present invention that building waste is handled; can reach year processing building waste 3050 ten thousand steres; taking one mu of landfill according to per ten thousand tons of building wastes calculates; can save about 3050 mu of soil every year; replace fetching earth with the regenerated building aggregate; produce 3,050 ten thousand square metres of all kinds of building materials, year can be protected about 300500 mu of soil, saves mineral resources 2035 ten thousand steres.
Claims (9)
1. method for comprehensive treatment of construction refuse is characterized in that: comprise following treatment step:
(1) one-level fragmentation: building waste is sent into the one-level disintegrating machine carry out fragmentation, output to sorting equipment then;
(2) letter sorting: by sorting equipment the foreign material in the building waste are sorted removal, and the building waste after will sorting outputs to the one-level concentration equipment;
(3) one-level magnetic separation: with the one-level concentration equipment metal species foreign material in the building waste are carried out magnetic separation and reject, and the building waste after the magnetic separation is outputed to secondary breaker;
(4) two-stage crushing: with secondary breaker building waste is carried out fragmentation once more, output to the secondary magnetic separation device then;
(5) secondary magnetic separation: with the secondary magnetic separation device the further magnetic separation of the metal species foreign material in the building waste is rejected, and the building waste after the magnetic separation is outputed to first grading oscillating screen;
(6) one-level screening: with first grading oscillating screen building waste is sieved, obtain coarse aggregate, fine aggregate and stone flour.
2. method for comprehensive treatment of construction refuse as claimed in claim 1 is characterized in that: also comprise the following treatment step that coarse aggregate that one-level screening step is obtained carries out:
(7) three grades of fragmentations: coarse aggregate is sent into tertiary crusher carry out fragmentation once more, output to second grading oscillating screen then;
(8) secondary screening: sieve acquisition fine aggregate and stone flour with the coarse aggregate of second grading oscillating screen after to three grades of fragmentations.
3. method for comprehensive treatment of construction refuse as claimed in claim 1, it is characterized in that: described sorting equipment comprises primary conveyor and is connected the one-level vibratory sieve of the material output be arranged at described primary conveyor, and described one-level vibratory sieve comprises supports, is arranged at the feeding groove in the described support and is fixedly set in compass screen surface above the described feeding groove by fork is hinged.
4. method for comprehensive treatment of construction refuse as claimed in claim 3, it is characterized in that: described one-level disintegrating machine is a jaw crusher, in floor projection, the length direction of the discharge gate of described jaw crusher is consistent with the mass transport direction of described primary conveyor.
5. method for comprehensive treatment of construction refuse as claimed in claim 1, it is characterized in that: described one-level concentration equipment and described secondary magnetic separation device include the two-stage conveying machine, described two-stage conveying machine comprise first roller, second roller and be surrounded on described first roller and described second roller on conveyer belt, described second roller is positioned at the material output of described two-stage conveying machine, and described second roller is provided with magnetic and inhales the iron device.
6. method for comprehensive treatment of construction refuse as claimed in claim 5 is characterized in that: described second roller comprises roller axle and the roller body that is set on the described roller axle, and described magnetic is inhaled the iron device and comprised the magnet that is arranged at described roller body inside.
7. method for comprehensive treatment of construction refuse as claimed in claim 6, it is characterized in that: the internal circumferential at described roller body is disposed with fixed head, side at the close described roller body inwall of described fixed head is provided with dividing plate, and described magnet is fixed on the described dividing plate and with described roller body inwall and reclines.
8. method for comprehensive treatment of construction refuse as claimed in claim 1 is characterized in that: described secondary breaker is hammer mill or impact breaker.
9. method for comprehensive treatment of construction refuse as claimed in claim 2 is characterized in that: described tertiary crusher is a double-roll crusher.
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| CN2010105079721A CN102009059A (en) | 2010-10-15 | 2010-10-15 | Construction waste comprehensive treatment method |
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| CN2010105079721A CN102009059A (en) | 2010-10-15 | 2010-10-15 | Construction waste comprehensive treatment method |
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| CN102974596A (en) * | 2012-12-13 | 2013-03-20 | 上海国砼环保设备有限公司 | Construction waste co-extrusion harmless treatment system and method thereof |
| CN103331287A (en) * | 2013-06-05 | 2013-10-02 | 广州捭阖环保科技有限公司 | Method and system for comprehensively treating building solid wastes |
| CN103567209A (en) * | 2012-08-08 | 2014-02-12 | 上海龙阳环保工程有限公司 | Resourceful treatment system and resourceful treatment method for decoration construction waste |
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| CN103853122A (en) * | 2012-12-04 | 2014-06-11 | 洛阳智超机电科技有限公司 | Intelligent control system for construction waste recycling joint production line |
| CN103853122B (en) * | 2012-12-04 | 2016-12-28 | 洛阳智超机电科技有限公司 | A kind of construction refuse resource combined production line intelligence control system |
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| CN103913044B (en) * | 2014-04-09 | 2015-12-09 | 广州世正环保科技发展有限公司 | A kind of dry homogenization process of building castoff comprehensive utilization material |
| CN103913044A (en) * | 2014-04-09 | 2014-07-09 | 广州世正环保科技发展有限公司 | Drying and homogenizing method for comprehensively utilizing materials of construction waste |
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Application publication date: 20110413 |