CN102614968B - Method for treating harmful particulates in building rubbish limestone powder by dry method - Google Patents
Method for treating harmful particulates in building rubbish limestone powder by dry method Download PDFInfo
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- CN102614968B CN102614968B CN 201210118206 CN201210118206A CN102614968B CN 102614968 B CN102614968 B CN 102614968B CN 201210118206 CN201210118206 CN 201210118206 CN 201210118206 A CN201210118206 A CN 201210118206A CN 102614968 B CN102614968 B CN 102614968B
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Abstract
The invention relates to a method for treating harmful particulates in building rubbish limestone powder by a dry method, which comprises the following steps: firstly, building rubbish raw materials are crushed, then, particles with the particle size greater than 4.7mm are subjected to extrusion crushing treatment and are finally and proportionally mixed with regeneration sand with the particle size less than 0.075mm and no harmful particles, and regeneration sand products with a mass percent content less than 10% and the harmful particles having the particle size less than 0.075mm. The extrusion crushing cost is about 3 Yuan per ton, the building rubbish can be produced into regeneration sand, the cost for producing one ton of regeneration sand by the method is a fraction of the market price of the ordinary traditional sand, and the method has the characteristics that raw materials are easily obtained, the process is simple and convenient, the manufacture cost is low, and the environment is favorably protected.
Description
Technical field
The invention belongs to the construction material processing technology field, relate to the method for particulates emission in a kind of dry process building waste stone flour.
Background technology
Because China's rapid development of economy, a large amount of reconstructions of the old city town is all being carried out in China various places, and the son that tears down the old house has produced a large amount of building wastes.The present processing mode of these building wastes is that heap is filled out, and heap occupies uses a large amount of soils, causes serious environmental to pollute.In order to solve the building waste problem; Central Organization Commission's clear and definite made from construction refuse resource recycling department's division of duty [Central Organization Commission is sent out (2010) No. 106] of sending the documents; departments such as requirement house town and country construction portion, State Development and Reform Commission, the Ministry of Industry and Information Technology, Environmental Protection Department, science and technology, finance, the tax will be according to above-mentioned division of duty; Each performs its own functions; close fit is carried out the work of made from construction refuse resource recycling jointly.
At present, the mode of the main processing building waste of China is with construction waste crushing, and screening adds producing regeneration brick by brickmaking machine after cement stirs.The production cost of this regeneration brick is very high, does not have profit substantially.
First procedure that building waste is handled is with its fragmentation, through after the fragmentation, produce 50%(and refer to quality) the above stone flour of particle diameter below 4.7mm, in these stone flours, contain the particulate (academic name be called content of stone powder) of some particle diameters below 0.075mm, these particulates are the harmful components in the construction sand, content for this particulate in the national standard of construction sand has strict restriction, regulation is＜10%, in the stone flour of building waste, this fraction of particle generally between 15%～20%, surpasses national standard, and these stone flours that produce through the broken operation in first road cannot be used for the common building mortar as the regeneration sand.Realize that these stone flours use as sand, just must manage to make these particulates up to standard.Existing method except particulate is with current scouring stone powder, utilize current that particulate is taken away, the mode of this processing particulate has a lot of drawbacks, and the one, be with a large amount of water, increase many costs, the 2nd, water except having taken away particulates emission, the more substantial particle of particle diameter between 0.075～2mm of having taken away, these particles are the main active ingredient of sand, lacked this part active ingredient, the result of use of sand is just very poor.And, wash the water behind the sand, the sewage that needs very jumbo pool will wash behind the sand precipitates, and could discharge after reaching pollution emission standard, and the powder that precipitates can only need expend certain manpower and materials and go processing as refuse generally speaking.Therefore, the mode of this processing particulate is impracticable basically.It is reported that China only has favourable some the regeneration sand of producing in this way of Beijing company of Taida of unit at present.
Summary of the invention
For overcoming above-mentioned technical disadvantages, the invention provides that a kind of technology is easy, cost of manufacture is low and environmentally friendly dry process building waste stone flour in the method for particulates emission.
The present invention solves the technical method that its technical problem adopts: the method for particulates emission in a kind of dry process building waste stone flour, and its making step is:
The first step is broken: earlier the building waste raw material is put into disintegrating machine and carry out fragmentation, the particle of particle diameter after the fragmentation greater than 4.7mm sieved out;
Second step was extruding: push by two cylinders that rotate in opposite directions sieving out the particle of particle diameter greater than 4.7mm after the fragmentation, between these two cylinders, leave the gap that to regulate, after extruding, make these particles all become particle diameter less than the particle of 4.7mm, do not have particle diameter in these particles fully less than the deleterious particle of 0.075mm;
The 3rd step was to convert to join: do not have the particle of particulates emission and the first step crushing and screening particle diameter that comes out to convert less than the particle of 4.7mm and join after will pushing, be less than 10% regeneration sand production with regard to making particle diameter less than the mass percentage content of 0.075mm deleterious particle.
The invention has the beneficial effects as follows: with the fragmentation of building waste raw material, again particle diameter is squeezed broken processing greater than the particle of 4.7mm, there is not particle diameter less than the deleterious particle of 0.075mm in the particle that produces after the processing procedure, the particle of handling is converted less than the particle of 4.7mm and is joined with the first step crushing and screening particle diameter that comes out again, just make mass percentage content and be less than 10% particle diameter less than the regeneration sand production of 0.075mm deleterious particle, squeeze and to be broken into that this is per ton about 3 yuan, just building waste production can be the regeneration sand, the cost that utilizes the present invention to produce one ton of regeneration sand is the part of general traditional sand market price, has raw material and is easy to get, technology is easy, low and the environmentally friendly characteristics of cost of manufacture.
The specific embodiment
The present invention is further described below in conjunction with embodiment.
The method of particulates emission in a kind of dry process building waste stone flour, its making step is:
The first step is broken: earlier the building waste raw material is put into disintegrating machine and carry out fragmentation, the particle of particle diameter after the fragmentation greater than 4.7mm sieved out;
Second step was extruding: push by two cylinders that rotate in opposite directions sieving out the particle of particle diameter greater than 4.7mm after the fragmentation, between these two cylinders, leave the gap that to regulate, after extruding, make these particles all become particle diameter less than the particle of 4.7mm, do not have particle diameter in these particles fully less than the deleterious particle of 0.075mm;
The 3rd step was to convert to join: do not have the particle of particulates emission and the first step crushing and screening particle diameter that comes out to convert less than the particle of 4.7mm and join after will pushing, be less than 10% regeneration sand production with regard to making particle diameter less than the mass percentage content of 0.075mm deleterious particle.
The present invention is with the fragmentation of building waste raw material, again particle diameter is squeezed broken processing greater than the particle of 4.7mm, there is not particle diameter less than the deleterious particle of 0.075mm in the particle that produces after the processing procedure, the particle of handling is converted less than the particle of 4.7mm and is joined with the first step crushing and screening particle diameter that comes out again, just make mass percentage content and be less than 10% particle diameter less than the regeneration sand production of 0.075mm deleterious particle, squeeze and to be broken into that this is per ton about 3 yuan, just building waste production can be the regeneration sand, the cost that utilizes the present invention to produce one ton of regeneration sand is the part of general traditional sand market price, has raw material and is easy to get, technology is easy, low and the environmentally friendly characteristics of cost of manufacture.
Claims (1)
1. the method for particulates emission in the dry process building waste stone flour is characterized in that making step is:
The first step is broken: earlier the building waste raw material is put into disintegrating machine and carry out fragmentation, the particle of particle diameter after the fragmentation greater than 4.7mm sieved out;
Second step was extruding: push by two cylinders that rotate in opposite directions sieving out the particle of particle diameter greater than 4.7mm after the fragmentation, between these two cylinders, leave the gap that to regulate, after extruding, make these particles all become particle diameter less than the particle of 4.7mm, do not have particle diameter in these particles fully less than the deleterious particle of 0.075mm;
The 3rd step was to convert to join: do not have the particle of particulates emission and the first step crushing and screening particle diameter that comes out to convert less than the particle of 4.7mm and join after will pushing, be less than 10% regeneration sand production with regard to making particle diameter less than the mass percentage content of 0.075mm deleterious particle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210118206 CN102614968B (en) | 2012-04-23 | 2012-04-23 | Method for treating harmful particulates in building rubbish limestone powder by dry method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210118206 CN102614968B (en) | 2012-04-23 | 2012-04-23 | Method for treating harmful particulates in building rubbish limestone powder by dry method |
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| Publication Number | Publication Date |
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| CN102614968A CN102614968A (en) | 2012-08-01 |
| CN102614968B true CN102614968B (en) | 2013-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210118206 Expired - Fee Related CN102614968B (en) | 2012-04-23 | 2012-04-23 | Method for treating harmful particulates in building rubbish limestone powder by dry method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601389A (en) * | 2013-12-02 | 2014-02-26 | 刘志明 | Method for crude sand and fine sand blending and light-material removing of regeneration sand produced from building garbage |
Citations (4)
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| CN1990129A (en) * | 2005-12-28 | 2007-07-04 | 罗以杰 | A method for comprehensive treatment of construction refuse |
| CN101099974A (en) * | 2007-05-22 | 2008-01-09 | 华南理工大学 | Method for treating and regenerating reuse building waste |
| CN101767945A (en) * | 2008-12-30 | 2010-07-07 | 上海德滨机械设备科技有限公司 | Method for preparing low soil content reclaimed aggregate |
| CN102115313A (en) * | 2009-12-31 | 2011-07-06 | 上海德滨环保科技有限公司 | Method for producing reclaimed machine-made sand with building rubbish |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040029235A (en) * | 2002-09-25 | 2004-04-06 | 산양환경산업 주식회사 | A Recycling Aggregate Of A Construction Waste Manufacturing Method |
| JP2004238274A (en) * | 2002-12-12 | 2004-08-26 | Kotsuzai Hanbai Kyodo Kumiai | Method for producing recycled aggregate |
| WO2005068080A1 (en) * | 2004-01-15 | 2005-07-28 | Samheung Environment Co., Ltd. | Method and apparatus for separating and recycling waste asphalt concrete of construction waste articles |
| KR100484295B1 (en) * | 2004-11-12 | 2005-04-20 | 주식회사 천보이티티 | Manufacturing method of aggregate and its apparatus for recycling construction waste aggregate |
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2012
- 2012-04-23 CN CN 201210118206 patent/CN102614968B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1990129A (en) * | 2005-12-28 | 2007-07-04 | 罗以杰 | A method for comprehensive treatment of construction refuse |
| CN101099974A (en) * | 2007-05-22 | 2008-01-09 | 华南理工大学 | Method for treating and regenerating reuse building waste |
| CN101767945A (en) * | 2008-12-30 | 2010-07-07 | 上海德滨机械设备科技有限公司 | Method for preparing low soil content reclaimed aggregate |
| CN102115313A (en) * | 2009-12-31 | 2011-07-06 | 上海德滨环保科技有限公司 | Method for producing reclaimed machine-made sand with building rubbish |
Non-Patent Citations (6)
| Title |
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| 再生骨料与再生混凝土技术新动向与评述;徐亦冬等;《新型建筑材料》;20050930(第9期);第34-37页 * |
| 徐亦冬等.再生骨料与再生混凝土技术新动向与评述.《新型建筑材料》.2005,(第9期),第34-37页. |
| 王智威.高品质再生骨料的生产工艺.《混凝土》.2006,(第9期),第48-50页. |
| 碾压混凝土制砂新技术的研究与实践;阮光华等;《中国水利》;20071231(第21期);第48-50页 * |
| 阮光华等.碾压混凝土制砂新技术的研究与实践.《中国水利》.2007,(第21期),第13-15页. |
| 高品质再生骨料的生产工艺;王智威;《混凝土》;20060930(第9期);第13-15页 * |
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| CN102614968A (en) | 2012-08-01 |
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