CN103159420A - Environment-friendly powder material and preparation method for same - Google Patents

Environment-friendly powder material and preparation method for same Download PDF

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Publication number
CN103159420A
CN103159420A CN2011104073722A CN201110407372A CN103159420A CN 103159420 A CN103159420 A CN 103159420A CN 2011104073722 A CN2011104073722 A CN 2011104073722A CN 201110407372 A CN201110407372 A CN 201110407372A CN 103159420 A CN103159420 A CN 103159420A
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powder
broken
environmental friendliness
particle diameter
thick
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CN2011104073722A
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Chinese (zh)
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CN103159420B (en
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杨德志
徐东升
朱伟良
刘琼
陆沈磊
王晓波
董杨
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上海德滨环保科技有限公司
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Priority claimed from CN201110407372.2A external-priority patent/CN103159420B/en
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    • Y02W30/95

Abstract

The invention discloses an environment-friendly powder material, wherein the powder material is a building waste recycled aggregate having a particle size of not greater than 1000 mum, and comprises an active material and an inert material. The invention further discloses a preparation method for the environment-friendly powder material. According to the environment-friendly powder material disclosed by the invention, resource comprehensive utilization from material production to material utilization is realized; and moreover, the environment-friendly powder material is not harmful to environment, and low in energy consumption and consumption during a production process. The environment-friendly powder material is a novel material accepted by people with pleasure and with environmental harmonization.

Description

A kind of environmental friendliness powder body material and preparation method thereof

Technical field

The present invention relates to building material field, be specifically related to a kind of environmental friendliness powder body material and preparation method thereof and use.

Background technology

Powder body material is exactly the powdered granule material less than 1000 μ m, and the building material industry powder body material is omnipresent, and cement is exactly powder body material, and every cement based building materials have all been used powder body material.The powder body material of building material industry also comprises flyash, slag powders and less than the various powder body materials such as fine sand of 1000 μ m.Powder body material is one of material of having the call of China's material of construction, year aggregate demand 3,000,000,000 tons of (containing less than 1000 μ m fine sands) left and right.For a long time, because China's fundamental construction is huge to the powder body material demand, particularly to the demand of cement, cause the considerable damage of resources and environment.Cement industry is unsustainable developing industry, thereby the activated supplementary cementitious material of Chinese government's promotion various tools of exploitation, to reduce cement clinker production.River sand resource is also day by day exhausted simultaneously, and government advocates development resource comprehensive utilization secondary sand.Construction industry realizes Sustainable development, must develop a circular economy.

Grind the center achievement in research according to Ministry of Construction's political affairs and show, Future in China will be removed the 20000000000 old buildings of square meter in 20 years.Be that Future in China will produce building construction rubbish more than 20,000,000,000 tons in 20 years.China's building construction garbage as resource recycles enterprise at present, and it is regenerated coarse aggregate that its made from construction refuse resource is disposed a kind of in reconstituted product, and another kind is recycled fine aggregate, all belong to the aggregate category, its leading thinking is, regenerated coarse aggregate substitutes natural gravel, and recycled fine aggregate substitutes natural sand.Show thus, China's building construction garbage as resource recycling prior art rests on the regeneration aggregate technological line mostly.

Because the leading composition of the building waste of China's present stage and next two decades is waste and old clay brick, thereby contain a large amount of brickbats in construction refuse regenerated aggregate, this kind construction refuse regenerated aggregate is not suitable for using as aggregate.Concrete Enterprises is held this kind regeneration aggregate and is repelled psychology, and namely this kind regeneration aggregate lacks the market requirement.Mixing the regeneration aggregate shortage market requirement is the basic reason that China's made from construction refuse resource industry does not grow up so far.Concrete and clay brick in building construction rubbish by classification artificial or that machinery is absolute, are not basically accomplished, or are increased a lot of costs.The concrete structure building waste contains a small amount of brick, or brick-and-concrete buildings rubbish contains a small amount of concrete, therefore must seek effective way, to realize comprehensive utilization of resources, high value added utilization and the utilization that becomes more meticulous.

Summary of the invention

Primary and foremost purpose of the present invention just is to overcome the existing the problems referred to above of existing building garbage regeneration aggregate, thereby a kind of environmental friendliness powder body material is provided.

Second purpose of the present invention is to provide the preparation method of described environmental friendliness powder body material.

The 3rd purpose of the present invention is to provide the application of described environmental friendliness powder body material.

Environmental friendliness powder body material of the present invention, described powder body material are that particle diameter≤1000 the construction refuse regenerated of μ m are gathered materials, and comprise active material and inert material.

According to the present invention, described active material is the micro-aggregate of particle diameter≤80 μ m.

According to the present invention, described inert material is the fine aggregate of 80 μ m<particle diameters≤1000 μ m.

According to the present invention, described active material accounts for powder body material 35%-45%.

According to the present invention, described inert material accounts for powder body material 55%-65%.

The preparation method of environmental friendliness powder body material of the present invention comprises the following steps:

A, dispose building waste by pre-processing device, obtain the material of 5mm≤particle diameter≤50mm;

B, with the further powder process of steps A gained material, obtain the powder body material of particle diameter≤1000 μ m.

The preparation method of environmental friendliness powder body material of the present invention, the pretreated step of described steps A building waste comprises: thick broken, sorting, magnetic separation, in broken, screening.

The preparation method of environmental friendliness powder body material of the present invention, described thick broken refer to adopt disintegrating apparatus with the building waste coarse breaking to particle diameter 100mm; Particularly, described thick broken disintegrating apparatus comprises that jaw is broken, counterattack is broken, roller is broken and hammer is broken.

The preparation method of environmental friendliness powder body material of the present invention, described sorting refers to adopt artificial or mechanical mode to remove plastics, fabric, wood and so on lightweight combustiblematerials in building waste.

The preparation method of environmental friendliness powder body material of the present invention, in described broken refer to use disintegrating apparatus with thick material crushing to powder; Particularly, in described, broken disintegrating apparatus comprises that the broken and thick hammer of counterattack is broken.

The preparation method of environmental friendliness powder body material of the present invention, described screening refers to the material of different-grain diameter is separately disposed to make different modes.

The preparation method of environmental friendliness powder body material of the present invention, the step of described step B powder process comprises: grinding, collection powder body material.

The preparation method of environmental friendliness powder body material of the present invention, described grinding refers to use milling equipment that material is ground; Further, described milling equipment comprises roll squeezer, Vertical Mill, hammer mill and impact grinding.

The preparation method of environmental friendliness powder body material of the present invention, described collection powder body material refers to use the powder body material of dust collection device collection cut size≤1000 μ m; Further, described dust collection device comprises the air box impulse collector.

The present invention also provides the application of environmental friendliness powder body material, for the preparation of concrete, mortar or materials for wall.

Beneficial effect of the present invention is:

1, created condition for China's cement based building materials greenization

The various concrete base material products such as concrete, mortar, plate brick are produced, and all need powder body material and fine sand aggregate, and particularly mortar, materials for wall plate tile product need the following powder body material of 1mm (usually accounting for more than 50%) in a large number.Concrete, mortar, plate brick can different ratios admixture environmental friendliness powder body material of the present invention, thereby created condition for China's building materials greenization.

2, marketable value is high

Because environment-friendly material of the present invention is wherein the regenerative micro powder of particle diameter≤80 μ m more than 1/3rd, according to the building material industry International Usage, the sal powder body material of particle diameter≤80 μ m belongs to the supplementary cementitious material category, can the part place of cement, be conducive to improve concrete base material products Physical and mechanical properties, help the user to reduce costs, utilize the technical market to be worth than regeneration aggregate physics and increase substantially.

3, energy consumption is low, cost is low

Environmental friendliness powder body material of the present invention, comprehensive energy consumption 10-12wk/t.If micro mist wherein adopts Vertical Mill or pipe mill (ball mill) to produce, usually energy consumption 20-40wk/t.

4, provide large basic material for foamed concrete

At present, China large in the urgent need to accelerating, cheaply, the powder body material starting material wide material sources, that can produce cellular concrete development.

5, provide large basic material for premixing mortar

Satisfy the development need of machine sandblast slurry, thermal insulation mortar, slim masonry mortar.Environmental friendliness powder body material of the present invention namely can substitute part natural fine sand in premixing mortar, can substitute again part of cement or adulterant in gelling material, has improved the mobility of machine sandblast slurry.Because powder and fine sand on market, most of big city are all very expensive, cause most of premixing mortar enterprise mostly to add coarse sand, add less powder body material and fine sand, thereby the mortar poor fluidity is difficult to reach the requirement of machine spray mobility usually.

6, provide large basic material for novel wall material

It is reducible cement consumption that environmental friendliness powder body material of the present invention can extensively use (the auxiliary part natural materials that adds) as various bricks, piece, plate raw materials for production, reduce finished product, can produce again surface, the uniform various bricks of density, building block, appearance looks elegant, fine quality.And present construction refuse regenerated walling is the regeneration walling of subsidiary fine aggregate production of producing when using the broken processing regenerated coarse aggregate of counterattack mostly, contains the soil amount larger, and particle is inhomogeneous, inferior quality.

7, provide convenient preferably for developing ecology cement

The cement of recycling claims eco-cement, is one of China's cement sectors developing direction.Environmental friendliness powder body material of the present invention provides condition for Cement industry fully utilizes the building solid waste on a large scale.Environmental friendliness powder body material of the present invention and cement clinker mix grinding, because the environmental friendliness powder body material is thinner, be conducive to ball mill levigate, realize energy-conservation, on the other hand, mix grinding environmental friendliness powder body material, have " microballoon mill effect ", be that cement clinker becomes ball-milling medium, promote that the environmental friendliness powder body material is further levigate, the part micro mist reaches 3 μ m, and then realize carrying out modification by the environmentally friendly powder body material of mechanical force and chemical, improve the environmental friendliness powder body material surface active, and then improve environmental friendliness powder body material admixture rate, realize large volume.China's cement sectors solid slag recycling rate only reaches 15-20%, and still there is a big difference to reach 40% with the comprehensive utilization of developed country cement sectors solid waste.The Overseas Development trend is cement sectors solid waste comprehensive utilization of resources rate 50-70%.French, German cement sectors have been realized the domestic garbage comprehensive utilization.China's cement sectors total energy consumption accounts for 75% of building materials industry, and cement sectors comprehensive utilization building regenerative raw materials meaning is huge.

8, realize large volume

Environmental friendliness powder body material wood property of the present invention is different from regeneration aggregate.Some building materials kind can realize two mixing, and has namely both mixed the environmental friendliness powder body material, mixes again regeneration aggregate, thereby realizes large volume.It is china natural resources comprehensive utilization important policies that large volume profit waste materials is produced building material made.Environmental friendliness powder body material of the present invention has been opened up the application of building twice-laid stuff in the gelling material field, gives full play to inert material and uses as aggregate.Environmental friendliness powder body material of the present invention substitutes respectively natural sand and cement, has both met state incentives, also is conducive to reduce costs.

9, meet industry policy

The energy-conserving and environment-protective industry is the strategic new industry Primary Industry of China.Promoting conventional industries to the energy-conserving and environment-protective industry development, realize comprehensive utilization of resources, become more meticulous utilization, high value added utilization, is China's energy-conserving and environment-protective strategy of industrial development.The user uses the various building material mades of a kind of environmental friendliness powder body material production to belong to country and advocates direction, and there is supporting encouragement policies in country.It is preferential that the concrete base material products adopts 30% twice-laid stuff enjoyment to exempt value added tax, and enterprise both received more tangible benefits, and simultaneously also for country has saved resource, had also protected environment.Therefore, the popularization of environmental friendliness powder body material of the present invention, utilization have taken into account economic benefit, social benefit, environmental benefit three aspects.

Embodiment

Below in conjunction with specific embodiment, the invention will be further described.Should be understood that following examples are only for explanation the present invention but not for limiting scope of the present invention.

The equipment such as in the present invention, jaw is broken, counterattack is broken, roller is broken, hammer is broken, counterattack is broken, thick hammer is broken, roll squeezer, hammer mill, impact grinding, Vertical Mill, air box impulse collector are available from Shanghai Debin Environmental Protection Technology Co., Ltd..

Embodiment 1, the environmental friendliness powder body material preparation

Prepare environmental friendliness powder body material of the present invention according to following steps:

A, dispose building waste by pre-processing device, obtain the material of 5mm≤particle diameter≤50mm;

Particularly, at first that building waste is slightly broken, adopt disintegrating apparatus (jaw is broken, counterattack is broken, roller is broken or hammer broken) with the building waste coarse breaking to particle diameter 100mm left and right material; Then adopt artificial or mechanical mode to sort removal plastics, fabric, wood and so on lightweight combustiblematerials in building waste; Then adopt disintegrating apparatus (the broken or thick hammer of counterattack is broken) to realize in the thick material of building waste broken; Simultaneously, because earth intensity in building waste is lower, in the disintegrating apparatus of high speed rotating, by hit, beat, the technique such as mill, stranding, earth powders rapidly, adopt sieve apparatus that the material of different-grain diameter is separately disposed to make different modes, wherein particle diameter<5mm is contained the larger material of native amount and peel off, particle diameter<5mm directly exports as uses such as roadbed materials after containing the larger material screening of soil amount; Reclaim the material of 5mm≤particle diameter≤50mm as the next process material, broken again in broken disintegrating apparatus during particle diameter>50mm material returns, wherein slightly broken, in also comprise that magnetic separation removes the step of metallic impurity after broken, screening process.

B, with the further powder process of steps A gained material, obtain the powder body material of particle diameter≤1000 μ m

Particularly, 5mm≤particle diameter that employing milling equipment (roll squeezer, hammer mill, impact grinding or Vertical Mill etc.) obtains the building waste pre-treatment≤50mm material grinds, material after grinding adopts the powder body material of dust collection device (air box impulse collector) collection cut size≤1000 μ m, and the material of particle diameter>1000 μ m can return to milling equipment and further grinds or collect to be used as him separately.

Embodiment 2, the environmental friendliness powder body material detection

As shown in table 1, get the powder body material 50g of particle diameter in embodiment 1≤1000 μ m, the square hole sieve screening with the supporting different pore size of negative pressure screen analyzer records the weight percent that accumulative total tails over.

Table 1

With reference to " GB/T 176-2008_ Method for chemical analysis of cement ", powder body material further is ground to below 80 μ m, its chemical composition to be measured, result is as shown in table 2.

Table 2

Chemical composition ??SiO 2 ??Al 2O 3 ??Fe 2O 3 ??CaO ??MgO Other Content (%) ??50~60 ??10~15 ??0~5 ??5~15 ??0~5 ??5~15

By the result of table 1 and table 2 as can be known, the micro-aggregate of particle diameter in environmental friendliness powder body material of the present invention≤80 μ m accounts for powder body material 35%-45%, and the fine aggregate of 80 μ m<particle diameters≤1000 μ m accounts for powder body material 55%-65%.With reference to the industrial residue activity test method of cement mixture " GB/T12957-2005 be used for ", the powder of particle diameter≤80 μ m is carried out activity detection, compressive strength rate was 70% in 28 days.

Embodiment 3, the environmental friendliness powder body material is as the application of cement mixture

3.1, use as cement slurry

With environmental friendliness powder body material of the present invention with pulverize after cement slurry mix, calcine, namely become cement clinker.

3.2, use as cement mixture

Environmental friendliness powder body material of the present invention is mixed with cement clinker, adopt pipe mill or Vertical Mill jointly to carry out mix grinding, can obtain eco-cement, can produce respectively label and be 22.5,32.5,42.5 eco-cement.

In the ratio shown in table 3, the environmental friendliness powder body material is mixed with cement clinker, gypsum, adopt Vertical Mill to carry out mix grinding.

Table 3

Get the cement mixture of table 3, detect according to " GB 12958-1999 composite Portland cement ", the results are shown in Table 4:

Table 4

??1# ??2# ??3# 3 days ultimate compression strength ??8.5 ??12.3 ??18.9 28 days ultimate compression strength ??25 ??33.4 ??45.3

As shown in Table 4 environmental friendliness powder body material of the present invention is mixed with cement clinker, adopt pipe mill or Vertical Mill jointly to carry out mix grinding, can obtain complex cement, can produce respectively label and be 22.5,32.5,42.5 complex cement.

Embodiment 4, the environmental friendliness powder body material is as the application of mortar adulterant

Press the formula shown in table 5, with 30% admixture of environmental friendliness powder body material of the present invention according to the mortar gross weight, part substitutes natural fine aggregate and powder body material (comprising that part substitutes flyash and cement) respectively.

Table 5

Get the mortar in table 5, detect according to " JGJ 70-2009 building mortar basic performance tests method ", the results are shown in Table 6:

Table 6

??1# ??2# ??3# Denseness (mm) ??90 ??90 ??90 28 days ultimate compression strength (MPa) ??6.7 ??5.3 ??11.2

As shown in table 6, environmental friendliness powder body material of the present invention is produced mortar as adulterant, and it is controlled that the intensity of mortar is adjustable, according to the actual demands of engineering adjustment, can produce the various model building mortars such as M5, M7.5, M10.

In sum, environmental friendliness powder body material of the present invention is from material produce, to materials'use, realized comprehensive utilization of resources, and environment is not produced harm, and the less energy-consumption of production process, low consumption, be the novel material that a kind of people took like a shot, had environment compatibility.

Claims (19)

1. an environmental friendliness powder body material, is characterized in that, described powder body material is that particle diameter≤1000 the construction refuse regenerated of μ m are gathered materials, and described powder body material comprises active material and inert material.
2. environmental friendliness powder body material as claimed in claim 1, is characterized in that, described active material is the micro-aggregate of particle diameter≤80 μ m.
3. environmental friendliness powder body material as claimed in claim 1, is characterized in that, described inert material is the fine aggregate of 80 μ m<particle diameters≤1000 μ m.
4. environmental friendliness powder body material as claimed in claim 1, is characterized in that, described active material accounts for powder body material 35%-45%.
5. environmental friendliness powder body material as claimed in claim 1, is characterized in that, described inert material accounts for powder body material 55%-65%.
6. the preparation method of an environmental friendliness powder body material as claimed in claim 1, is characterized in that, comprises the following steps:
A, dispose building waste by pre-processing device, obtain the material of 5mm≤particle diameter≤50mm;
B, with the further powder process of steps A gained material, obtain the powder body material of particle diameter≤1000 μ m.
7. preparation method as claimed in claim 6, is characterized in that, the pretreated step of described steps A building waste comprises: thick broken, sorting, magnetic separation, in broken, screening.
8. preparation method as claimed in claim 7, is characterized in that, described thick broken refer to adopt disintegrating apparatus with the building waste coarse breaking to particle diameter 100mm.
9. preparation method as claimed in claim 8, is characterized in that, described thick broken disintegrating apparatus comprises that jaw is broken, counterattack is broken, roller is broken and hammer is broken.
10. preparation method as claimed in claim 7, is characterized in that, described sorting refers to adopt artificial or mechanical mode to remove plastics, fabric, wood and so on lightweight combustiblematerials in building waste.
11. preparation method as claimed in claim 7 is characterized in that, in described broken refer to use disintegrating apparatus with thick material crushing to powder.
12. preparation method as claimed in claim 11 is characterized in that, described in broken disintegrating apparatus comprise that the broken and thick hammer of counterattack is broken.
13. preparation method as claimed in claim 7 is characterized in that, described screening refers to the material of different-grain diameter is separately disposed to make different modes.
14. preparation method as claimed in claim 6 is characterized in that, the step of described step B powder process comprises: grinding, collection powder body material.
15. preparation method as claimed in claim 14 is characterized in that, described grinding refers to use milling equipment that material is ground.
16. preparation method as claimed in claim 15 is characterized in that, described milling equipment comprises roll squeezer, Vertical Mill, hammer mill and impact grinding.
17. preparation method as claimed in claim 14 is characterized in that, described collection powder body material refers to use the powder body material of dust collection device collection cut size≤1000 μ m.
18. preparation method as claimed in claim 17 is characterized in that, described dust collection device comprises the air box impulse collector.
19. the application of environmental friendliness powder body material as claimed in claim 1 is characterized in that, for the preparation of concrete, mortar or materials for wall.
CN201110407372.2A 2011-12-09 A kind of Environment-friendlypowder powder material and preparation method thereof CN103159420B (en)

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Application Number Priority Date Filing Date Title
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CN103159420B CN103159420B (en) 2016-12-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105198257A (en) * 2015-09-06 2015-12-30 越艳 Construction waste crushing and screening line method

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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
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
CN102206054A (en) * 2011-04-07 2011-10-05 上海德滨环保科技有限公司 Renewable active powder and preparation method thereof
CN102219416A (en) * 2011-04-07 2011-10-19 上海德滨环保科技有限公司 High activity regenerated powder and preparation method thereof

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Publication number Priority date Publication date Assignee Title
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
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
CN102206054A (en) * 2011-04-07 2011-10-05 上海德滨环保科技有限公司 Renewable active powder and preparation method thereof
CN102219416A (en) * 2011-04-07 2011-10-19 上海德滨环保科技有限公司 High activity regenerated powder and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105198257A (en) * 2015-09-06 2015-12-30 越艳 Construction waste crushing and screening line method

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