CN102249583A - Method for calcining building garbage regenerated aggregate - Google Patents
Method for calcining building garbage regenerated aggregate Download PDFInfo
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- CN102249583A CN102249583A CN201110097560XA CN201110097560A CN102249583A CN 102249583 A CN102249583 A CN 102249583A CN 201110097560X A CN201110097560X A CN 201110097560XA CN 201110097560 A CN201110097560 A CN 201110097560A CN 102249583 A CN102249583 A CN 102249583A
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- calcining
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- regenerated aggregate
- regeneration aggregate
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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
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Abstract
The invention provides a method for calcining building garbage regenerated aggregate. The method comprises the following steps of: crushing building garbage, screening and deironing to prepare the regenerated aggregate, conveying the regenerated aggregate into a calcining container for calcining, so that combustible impurities in the regenerated aggregate are combusted into ash, and grinding the calcined regenerated aggregate by using grinding equipment such as a ball grinder, a taper grinder and the like to form regenerated powder. In the method, combustibles in the building garbage regenerated aggregate are removed by calcining, and the moisture content of the regenerated aggregate is reduced, so the condition is created for the high-additional value resource utilization of the regenerated powder and the like manufactured by the regenerated aggregate through the grinding equipment such as the ball grinder, the taper grinder, and the disposal cost of the building garbage is also reduced simultaneously.
Description
Technical field
The present invention relates to the field of building waste method of disposal, be specifically related to a kind of construction refuse regenerated aggregate calcining processing method.
Background technology
Building waste comprises waste and old concrete, waste and old clay brick and glass cullet, broken pottery, wood fragments piece, broken plastics multiple components such as (piece, film, ropes etc.).Construction refuse regenerated aggregate is exactly that building waste is disposed the regeneration aggregate that reclaims later through technologies such as fragmentation, screening, deironing, comprises regenerated coarse aggregate and recycled fine aggregate.Building waste by technologies such as manual sorting, mechanical grading, selection by winnowing, sorts out most of lightweight combustiblesubstance in the building waste, but still contains combustiblematerialss such as a spot of wood fragments bits, broken plastics bits in the construction refuse regenerated aggregate in disposal process.So construction refuse regenerated aggregate is made low side concrete and goods thereof as solid filler mostly usually.
Summary of the invention
At above-mentioned defective, the purpose of this invention is to provide a kind of construction refuse regenerated aggregate calcining processing method, still contain the lightweight combustiblematerials in the regeneration aggregate with the recovery of solution traditional architecture disposal of garbage technology, and water content is higher, is unfavorable for the technical problem of follow-up grinding step.
For achieving the above object, the present invention has adopted following technical scheme:
A kind of construction refuse regenerated aggregate calcining processing method may further comprise the steps:
At first, building waste through fragmentation, screening and deferrization process, is prepared into regeneration aggregate;
Then, the regeneration aggregate of making sent in the calcining vessel calcine, to remove the flammable impurity in the regeneration aggregate.
According to the described construction refuse regenerated aggregate calcining processing method of preferred embodiment of the present invention, further comprise step: use grinding plant to grind to form the regeneration powder through the regeneration aggregate after the calcining.
According to the described construction refuse regenerated aggregate calcining processing method of preferred embodiment of the present invention, among the step B regeneration aggregate calcined until its moisture content＜6% and flammable impurity burning wherein and turn to dust and ashes.
According to the described construction refuse regenerated aggregate calcining processing method of preferred embodiment of the present invention, calcining temperature is 400 ℃～900 ℃ among the step B.
According to the described construction refuse regenerated aggregate calcining processing method of preferred embodiment of the present invention, the calcining vessel described in the step B is a rotary kiln.
Owing to adopted above technical characterictic, made the present invention have following advantage and positively effect than prior art:
At first, thoroughly solve regeneration aggregate and contained the combustiblematerials problem.Combustiblematerials can burn till ashes in the regeneration aggregate under 400 ℃～900 ℃ combustion cases, thereby thoroughly avoids regeneration aggregate to contain the combustiblematerials problem.
Secondly, reduced the building waste cost of disposal.Reject that combustiblematerials need spend manually in the building waste, machine cost, and calcining is brought into play with the effect of combustiblematerials in the building waste as fuel, increases the activity of building waste, thus the reduction cost of disposal.
Once more, create conditions for the high added value recycling.Construction refuse regenerated aggregate calcining process of the present invention had both solved regeneration aggregate and had contained the combustiblematerials problem, had solved regeneration aggregate water ratio problem again, thereby was that regeneration aggregate creates conditions by grinding plant manufacturings such as ball mill, taper thread grinding machine regeneration powder.Usually grinding machinery has higher requirements to grinding material water ratio, percentage of admixture, and grinding material water ratio, percentage of admixture exceed standard, and not only influence production efficiency, and the powder quality also is difficult to guarantee.And the powder active of making through the incinerating building waste also can improve.
Description of drawings
Fig. 1 is a construction refuse regenerated aggregate preparation technology schema in the embodiment of the invention;
Fig. 2 is regeneration aggregate calcination process figure in the embodiment of the invention;
Fig. 3 is that regeneration aggregate grinds regeneration powder process flow sheet in the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described in detail, but the present invention is not restricted to these embodiment.The present invention contain any on marrow of the present invention and scope, make substitute, modification, equivalent method and scheme.Understand for the public is had completely the present invention, in the following preferred embodiment of the present invention, describe concrete details in detail, and do not have the description of these details also can understand the present invention fully for a person skilled in the art.
Embodiment 1:
A kind of construction refuse regenerated aggregate calcining processing method may further comprise the steps:
At first, building waste is carried out the one-level fragmentation through sending into jaw crusher behind the manual sorting, to carry out the manual sorting again through the material after the one-level fragmentation, again material is sent into magnetic separator and carried out deironing, to send into impact breaker through the material of deferrization process and carry out two-stage crushing, again to sieving afterwards the acquisition regenerated coarse aggregate (particle diameter be 10～40mm) and recycled fine aggregate (particle diameter＜10mm) with flat shaking through the material behind the two-stage crushing, the particle diameter that obtains is sent into hammer mill greater than the regeneration aggregate of 40mm and is carried out with vibratory screening apparatus it being sieved into the recycled fine aggregate that particle diameter is respectively 0～3mm and 3～5mm after three grades of fragmentations, and its schema as shown in Figure 1;
Then, it is to calcine in the rotary kiln that the regeneration aggregate of making is sent into calcining vessel, and calcining temperature is 400 ℃, and calcining is finished when the moisture content in the regeneration aggregate＜6%, flammable impurity burning in the regeneration aggregate at this moment turns to dust and ashes, and its schema as shown in Figure 2;
Then, will send into feeding bin by handling equipment, grind by grinding plant again, make the regeneration powder through the regeneration aggregate after the calcining.Described grinding plant comprises ball mill, taper thread grinding machine, roller mill etc., and what present embodiment adopted is ball mill.By cyclone type powder sorting machine the regeneration powder of making is screened at last and obtain finished product and deliver to finished bin, simultaneously the coarse fodder that filters out being sent back to shredder continues to grind, use dust-precipitator to assist to collect in taking in the process of finished product, its schema as shown in Figure 3.
Embodiment 2:
A kind of construction refuse regenerated aggregate calcining processing method may further comprise the steps:
At first, building waste is carried out the one-level fragmentation through sending into jaw crusher behind the manual sorting, to carry out the manual sorting again through the material after the one-level fragmentation, again material is sent into magnetic separator and carried out deironing, to send into cone crusher through the material behind the deferrization process and carry out two-stage crushing, again to through the material behind the two-stage crushing with trommel screen sieve the back obtain regenerated coarse aggregate (particle diameter be 10～25mm) and recycled fine aggregate (particle diameter＜10mm), the regeneration aggregate greater than 25mm of acquisition are sent into cone crusher and are carried out three grades of broken backs and with vibratory screening apparatus it is sieved into the recycled fine aggregate that particle diameter is 0～3mm and 3～5mm;
Then, it is to calcine in the rotary kiln that the regeneration aggregate of making is sent into calcining vessel, and calcining temperature is 700 ℃, and calcining is finished when the moisture content of regeneration aggregate＜3%, and the flammable impurity burning in this moment regeneration aggregate turns to dust and ashes;
Then, will send into feeding bin by handling equipment, grind by ball mill again, make the regeneration powder through the regeneration aggregate after the calcining.At last the regeneration powder of making is screened the finished product of acquisition and delivers to finished bin, simultaneously the coarse fodder that filters out is sent back to shredder and continue to grind, in taking in the process of finished product, use dust-precipitator to assist to collect by the O-SEPA powder separating machine.
Embodiment 3:
A kind of construction refuse regenerated aggregate calcining processing method may further comprise the steps:
At first, building waste is carried out the one-level fragmentation through sending into jaw crusher behind the manual sorting, to carry out the manual sorting again through the material after the one-level fragmentation, again material is sent into magnetic separator and carried out deironing, to send into hammer mill through the material behind the deferrization process and carry out two-stage crushing, again to through the material behind the two-stage crushing with flip-flop screen sieve the back obtain regenerated coarse aggregate (particle diameter be 10～25mm) and recycled fine aggregate (particle diameter＜10mm), the regeneration aggregate greater than 40mm of acquisition are sent into impact breaker and are carried out three grades of broken backs and with vibratory screening apparatus it is sieved into the recycled fine aggregate that particle diameter is 0～3mm and 3～5mm;
Then, it is to calcine in the rotary kiln that the regeneration aggregate of making is sent into calcining vessel, and calcining temperature is 900 ℃, and calcining is finished when the moisture content of regeneration aggregate＜1%, and the flammable impurity burning in this moment regeneration aggregate turns to dust and ashes;
Then, will send into feeding bin by handling equipment, grind by ball mill again, make the regeneration powder through the regeneration aggregate after the calcining.At last the regeneration powder of making is screened the finished product of acquisition and delivers to finished bin, simultaneously the coarse fodder that filters out is sent back to shredder and continue to grind, in taking in the process of finished product, use dust-precipitator to assist to collect by centrifugal classifier.
Adopt the regeneration powder of the scheme acquisition of the foregoing description 1-3, its 28d intensity activity index (being undertaken by GB/T17671) is respectively:＞70%,＞80%,＞85%, loss on ignition all＜6%, and adopt its 28d intensity activity index of regeneration aggregate of produced in conventional processes is 65%, loss on ignition all＞6%, as seen the powder active of making through the incinerating building waste is improved significantly.
In sum, make the present invention have following advantage and positively effect than prior art:
At first, thoroughly solve regeneration aggregate and contained the combustiblematerials problem.Combustiblematerials can burn till ashes in the regeneration aggregate under 400 ℃～900 ℃ combustion cases, thereby thoroughly avoids regeneration aggregate to contain the combustiblematerials problem.
Secondly, reduced the building waste cost of disposal.Reject that combustiblematerials need spend manually in the building waste, machine cost, and calcining is brought into play with the effect of combustiblematerials in the building waste as fuel, increases the activity of building waste, thus the reduction cost of disposal.
Once more, create conditions for the high added value recycling.Construction refuse regenerated aggregate calcining process of the present invention had both solved regeneration aggregate and had contained the combustiblematerials problem, had solved regeneration aggregate water ratio problem again, thereby was that regeneration aggregate creates conditions by grinding plant manufacturings such as ball mill, taper thread grinding machine regeneration powder.Usually grinding machinery has higher requirements to grinding material water ratio, percentage of admixture, and grinding material water ratio, percentage of admixture exceed standard, and not only influence production efficiency, and the powder quality also is difficult to guarantee.And the powder active of making through the incinerating building waste also can improve.
The preferred embodiment of the present invention just is used for helping to set forth the present invention.Preferred embodiment does not have all details of detailed descriptionthe, does not limit this invention yet and only is described embodiment.Obviously, according to the content of this specification sheets, can make many modifications and variations.These embodiment are chosen and specifically described to this specification sheets, is in order to explain principle of the present invention and practical application better, thereby the technical field technician can utilize the present invention well under making.The present invention only is subjected to the restriction of claims and four corner and equivalent.
Claims (5)
1. construction refuse regenerated aggregate calcining processing method is characterized in that may further comprise the steps:
A, with building waste through broken, screening and deferrization process, be prepared into regeneration aggregate;
B, the regeneration aggregate of making sent in the calcining vessel calcine, to remove the flammable impurity in the regeneration aggregate.
2. the method for claim 1 is characterized in that further may further comprise the steps: use grinding plant to grind to form the regeneration powder through the regeneration aggregate after the calcining.
3. method as claimed in claim 1 or 2 is characterized in that, among the step B regeneration aggregate is calcined until its moisture content＜6% and flammable impurity burning wherein to turn to dust and ashes.
4. method as claimed in claim 1 or 2 is characterized in that, calcining temperature is 400 ℃～900 ℃ among the step B.
5. method as claimed in claim 1 or 2 is characterized in that, the calcining vessel described in the step B is a rotary kiln.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110097560XA CN102249583A (en) | 2011-04-19 | 2011-04-19 | Method for calcining building garbage regenerated aggregate |
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| CN201110097560XA CN102249583A (en) | 2011-04-19 | 2011-04-19 | Method for calcining building garbage regenerated aggregate |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838301A (en) * | 2012-09-04 | 2012-12-26 | 南京理工大学 | Method for activating waste aerated concrete blocks |
| CN103102090A (en) * | 2013-01-17 | 2013-05-15 | 上海国砼环保设备有限公司 | Device of resource treatment system with combination of building waste residue and grinding and using method thereof |
| CN103183485A (en) * | 2011-12-27 | 2013-07-03 | 上海德滨环保科技有限公司 | Environmentally-friendly micro-powder |
| CN103553503A (en) * | 2013-11-11 | 2014-02-05 | 北京新奥混凝土集团有限公司 | Preparation method of C50 recycled concrete of low gelling material |
| CN104058674A (en) * | 2014-07-08 | 2014-09-24 | 日照弗尔曼新材料科技有限公司 | Concrete |
| CN104072045A (en) * | 2014-07-08 | 2014-10-01 | 日照弗尔曼新材料科技有限公司 | High-silt-content concrete |
| CN107235674A (en) * | 2017-06-30 | 2017-10-10 | 衢州熊妮妮计算机科技有限公司 | The method that concrete is prepared using building waste and waste old ceramics |
| CN112121970A (en) * | 2020-08-26 | 2020-12-25 | 深圳绿景环保再生资源有限公司 | Construction waste treatment device and treatment process thereof |
-
2011
- 2011-04-19 CN CN201110097560XA patent/CN102249583A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103183485A (en) * | 2011-12-27 | 2013-07-03 | 上海德滨环保科技有限公司 | Environmentally-friendly micro-powder |
| CN103183485B (en) * | 2011-12-27 | 2016-08-03 | 上海德滨环保科技有限公司 | A kind of Environmentally-friemicro-powder micro-powder |
| CN102838301A (en) * | 2012-09-04 | 2012-12-26 | 南京理工大学 | Method for activating waste aerated concrete blocks |
| CN103102090A (en) * | 2013-01-17 | 2013-05-15 | 上海国砼环保设备有限公司 | Device of resource treatment system with combination of building waste residue and grinding and using method thereof |
| CN103553503A (en) * | 2013-11-11 | 2014-02-05 | 北京新奥混凝土集团有限公司 | Preparation method of C50 recycled concrete of low gelling material |
| CN103553503B (en) * | 2013-11-11 | 2015-09-30 | 北京新奥混凝土集团有限公司 | A kind of preparation method of C50 regeneration concrete of low gelling material |
| CN104058674A (en) * | 2014-07-08 | 2014-09-24 | 日照弗尔曼新材料科技有限公司 | Concrete |
| CN104072045A (en) * | 2014-07-08 | 2014-10-01 | 日照弗尔曼新材料科技有限公司 | High-silt-content concrete |
| CN104058674B (en) * | 2014-07-08 | 2016-03-30 | 日照弗尔曼新材料科技有限公司 | Concrete |
| CN107235674A (en) * | 2017-06-30 | 2017-10-10 | 衢州熊妮妮计算机科技有限公司 | The method that concrete is prepared using building waste and waste old ceramics |
| CN112121970A (en) * | 2020-08-26 | 2020-12-25 | 深圳绿景环保再生资源有限公司 | Construction waste treatment device and treatment process thereof |
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Application publication date: 20111123 |