CN1730176A

CN1730176A - Method for manufacturing construction refuse regenerated aggregate

Info

Publication number: CN1730176A
Application number: CNA2005100417468A
Authority: CN
Inventors: 王西; 武晓华
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-03
Filing date: 2005-03-03
Publication date: 2006-02-08

Abstract

The invention relates to a regenerative aggregate preparing method by construction garbage, which pertains to recycle economy and advanced material domain. The invention comprises cleaning, sorting, single-stage crushing, single-stage screening, categorizing, two-stage crushing, premixing, two-stage screening, intensifying, grading and so on. The invention can be used in architectural engineering and road traffic engineering.

Description

The manufacture method of construction refuse regenerated aggregate

Technical field

The present invention relates to the recycling economy field, is a kind of method of making regeneration aggregate with building waste.

Background technology

Along with China's rapid development of economy, pull down and remove a building for reconstruction in the city and capital construction is producing a large amount of building wastes.At present a large amount of building wastes are regarded as the discarded object landfill disposal, not only destroying land resource but also polluting environment, also have and be made on a small quantity to use behind the regeneration aggregate, but because of production method simple and crude, can not guarantee the homogeneity and the high epistasis of the regeneration aggregate produced, and homogeneity and high epistasis are two big important indicators of regeneration aggregate, and this just makes the use of construction refuse regenerated aggregate be subjected to serious restriction.

Summary of the invention

It is poor that the present invention is intended at the building waste homogeneity, becomes to be grouped into complicated characteristics, and it is advanced a series of processing, produces the even high-strength construction refuse regenerated aggregate of matter.

Its technical scheme is: take operations such as cleaning, letter sorting, one-level fragmentation, one-level screening, classification, two-stage crushing, premixing, secondary screening, reinforcement, classification to solve the problems of the technologies described above.

The construction refuse regenerated aggregate that adopts this method to produce has following characteristics: 1, homogeneity is good; 2, intensity height; 3, multiple classification, each takes what he needs; 4, the rigorous treatment operation of system makes the scope of application of this product significantly enlarge.

The specific embodiment

One, the purpose of cleaning is the earth of removing in the building waste.

When building waste was rolled downslide from the oblique chute that has horse tooth trough, the high pressure fire hose carried out powerful jet douche to it.The intensity of injection water and amplitude can be regulated, and the sewage that produces in the cleaning can be recycled through post precipitation.

Two, the purpose of letter sorting letter sorting is the organic matter of removing in the building waste.

Organic matters such as a spot of timber, paper scrap, plastics, malthoid are arranged in the building waste, and its proportion is lighter, can suspend in water or floats on the water surface.

With building waste from the oblique chute that has horse tooth trough, from a plurality of directions roll be scattered put into the pond after, treat that organic matter floats the back and salvages clean with fishing net.

Three, the building waste after the one-level fragmentation will be sorted selects for use suitable jaw crusher to carry out fragmentation, and the output of the aggregate of broken back particle diameter 50mm～100mm should be controlled at more than 80%.

Four, one-level screening is that the garden hole sizer of the 50mm building waste aggregate after with the one-level fragmentation sieves with the space.

Five, the purpose of classification classification is that fragment of brick and concrete block in the aggregate of one-level screening back particle diameter 50mm～100mm are distinguished from material, also should remove reinforcing bar, ironware in the aggregate of one-level screening back simultaneously, this has just guaranteed the homogeneity of regeneration aggregate from the material aspect.

Classification is to adopt high intelligent automation control system to finish.

Six, two-stage crushing is sorted fragment of brick and concrete block, can get particle diameter greater than 0mm after selecting suitable hammer crushing crusher machine for use, is less than or equal to regeneration brick aggregate and the Aggregate of recycled concrete of 40mm.

Seven, premixing building waste aggregate can produce loosening adhesion layer in broken production process, its existence will influence the intensity quality of aggregate, by mixer in advance behind the dry mixing two-stage crushing regeneration brick aggregate and the Aggregate of recycled concrete of gained can eliminate this adverse effect.

Eight, the secondary screening can get the fine aggregate of particle diameter＜5mm after the secondary screening; The coarse aggregate of particle diameter 5mm～10mm; The coarse aggregate of particle diameter 10mm～30mm; The coarse aggregate of particle diameter 20mm～40mm and the aggregate of other grating.

Nine, strengthen the building waste aggregate and can produce tiny crack in broken production process, there is the intensity quality that can reduce aggregate in it.

Be mixed with slurries in proportion with superfined flyash or SILICA FUME, Portland cement and water, the regeneration aggregate after the secondary screening be immersed in wherein, treat surperficial initial set after maintenance can be made into high-strength aggregate.

Can guarantee the high epistasis of construction refuse regenerated aggregate with the method for mixing and stirring reinforcement in advance.

Ten, the purpose of classification classification is with the finished bricks coarse aggregate of quantitative methods after with the reinforcement of separate sources, carries out after the classification difference by cylindrical compress strength and stacks and use; With the finished product concrete coarse aggregate after the reinforcement of separate sources, undertaken distinguishing the stacking use after the classification by the crushing index, this has just guaranteed the homogeneity of construction refuse regenerated aggregate with quantitative methods.

Claims

1, a kind ofly makes the method for regeneration aggregate, it is characterized in that taking to clean, operations such as letter sorting, one-level fragmentation, one-level screening, classification, two-stage crushing, premixing, secondary screening, reinforcement, classification to be to produce the even high-strength construction refuse regenerated aggregate of matter with building waste.

2, the described cleaning of claim 1 is that the high pressure fire hose carried out powerful jet cleaning to it when building waste was rolled downslide from the oblique chute that has horse tooth trough.

3, the described one-level fragmentation of claim 1 should select for use jaw crusher to carry out, and the output of the aggregate of broken back particle diameter 50mm～100mm should be controlled at more than 80%.

4, the described one-level of claim 1 screening, should adopt the space is that the garden hole sizer of 50mm is finished.

5, the described classification of claim 1 adopts high intelligent automation control system to finish.

6, the described two-stage crushing of claim 1 should select for use hammer mill to carry out.

7, the described reinforcement of claim 1 should adopt superfined flyash or SILICA FUME, Portland cement and water to be mixed with slurries in proportion, and the regeneration aggregate after the secondary screening is immersed in wherein, treat surperficial initial set after maintenance can be made into high-strength aggregate.

8, the described classification of claim 1 to regeneration brick coarse aggregate finished product, is weighed classification by cylindrical compress strength; To the recycled concrete coarse aggregate finished product, weigh classification by the crushing index.