CN102614968A - 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 PDF

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Publication number
CN102614968A
CN102614968A CN2012101182065A CN201210118206A CN102614968A CN 102614968 A CN102614968 A CN 102614968A CN 2012101182065 A CN2012101182065 A CN 2012101182065A CN 201210118206 A CN201210118206 A CN 201210118206A CN 102614968 A CN102614968 A CN 102614968A
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particle
particle diameter
sand
building rubbish
dry
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CN2012101182065A
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Chinese (zh)
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CN102614968B (en
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刘志明
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刘志明
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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 the particles which are crushed and sieved in the first step and have the particle size smaller than 4.7mm, and regeneration sand products meeting the Chinese current standards are prepared. 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

The method of particulates emission in a kind of dry process building waste stone flour

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 of sending the documents utilizes department's division of duty [Central Organization Commission is sent out (2010) No. 106] again; 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, and close fit is carried out made from construction refuse resource jointly and utilized work again.

At present, the mode of the main processing building waste of China is with construction waste crushing, and screening adds producing regeneration brick through brickmaking machine after cement stirs.The production cost of this regeneration brick is very high, does not have profit basically.

First procedure that building waste is handled is with its fragmentation, through after the fragmentation, produces the above stone flour of particle diameter below 4.7mm of 50% (referring to quality); 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%, and in the stone flour of building waste, this fraction of particle is generally between 15%~20%; Surpass national standard, 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.The existing method of removing particulate is with current scouring stone powder, utilizes current that particulate is taken away, the mode of this processing particulate; A lot of drawbacks is arranged, the one, use 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 present invention provide 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 through 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 the particle of particle diameter, do not have the deleterious particle of particle diameter in these particles fully less than 0.075mm less than 4.7mm;

The 3rd step was to convert to join: do not have particle and the first step crushing and screening of the particulates emission particle diameter that comes out to convert less than the particle of 4.7mm and join after will pushing, just make the regeneration sand production that meets national current standard.

The invention has the beneficial effects as follows: with the building waste raw material crushing; Again particle diameter is squeezed broken processing greater than the particle of 4.7mm; Do not have the deleterious particle of particle diameter less than 0.075mm in the particle that is produced 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 makes the regeneration sand production that meets national current standard; Squeeze and to be broken into that this is per ton about 3 yuan; Just can building waste production 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 that raw material is easy to get, technology is easy, cost of manufacture is low and environmentally friendly characteristics.

The specific embodiment

Below in conjunction with embodiment the present invention is further specified.

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 through 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 the particle of particle diameter, do not have the deleterious particle of particle diameter in these particles fully less than 0.075mm less than 4.7mm;

The 3rd step was to convert to join: do not have particle and the first step crushing and screening of the particulates emission particle diameter that comes out to convert less than the particle of 4.7mm and join after will pushing, just make the regeneration sand production that meets national current standard.

The present invention is with the building waste raw material crushing; Again particle diameter is squeezed broken processing greater than the particle of 4.7mm; Do not have the deleterious particle of particle diameter less than 0.075mm in the particle that is produced 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 makes the regeneration sand production that meets national current standard; Squeeze and to be broken into that this is per ton about 3 yuan; Just can building waste production 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 that raw material is easy to get, technology is easy, cost of manufacture is low and environmentally friendly characteristics.

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 through 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 the particle of particle diameter, do not have the deleterious particle of particle diameter in these particles fully less than 0.075mm less than 4.7mm;
The 3rd step was to convert to join: do not have particle and the first step crushing and screening of the particulates emission particle diameter that comes out to convert less than the particle of 4.7mm and join after will pushing, just make the regeneration sand production that meets national current standard.
CN 201210118206 2012-04-23 2012-04-23 Method for treating harmful particulates in building rubbish limestone powder by dry method CN102614968B (en)

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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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CN102614968B CN102614968B (en) 2013-10-02

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Cited By (1)

* Cited by examiner, † Cited by third party
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

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JP2004238274A (en) * 2002-12-12 2004-08-26 Kotsuzai Hanbai Kyodo Kumiai Method for producing recycled aggregate
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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
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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
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

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Cited By (1)

* Cited by examiner, † Cited by third party
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

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