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Construction waste resourceful treatment method

A construction waste and treatment method technology, applied in the field of construction waste recycling, can solve the problems of rough construction waste treatment methods, ecological environment hazards, less than 10%, and achieve good sorting effect, good quality, and fine separation effect

Pending Publication Date: 2021-05-25
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If these construction wastes cannot be treated and utilized reasonably and effectively, it will not only cause a huge waste of resources, but also cause long-term and large-scale harm to the ecological environment.
However, the resource utilization rate of construction waste in my country at this stage is still less than 10%, and the treatment methods of construction waste are relatively rough, basically simple landfill, or even piled up randomly

Method used

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  • Construction waste resourceful treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A construction waste resource processing method is carried out according to the following steps:

[0024] Step 1, rough classification of construction waste: classify the construction waste according to the degree of recyclability and stack them separately to the raw material warehouse;

[0025] Step 2, primary screening of construction waste: Send the waste in the raw material warehouse to the pre-screening equipment, screen out the dregs in it to make recycled cement stabilizers, and then send it to the magnetic separation equipment to select scrap iron and other materials for processing Recycling and reuse to obtain construction waste after primary screening;

[0026] Step 3, primary crushing and re-screening: the primary crushed construction waste obtained in step 2 is primary crushed with a mobile jaw crusher, and then subjected to winnowing to obtain primary crushed construction waste;

[0027] Step 4, secondary crushing and screening: use a mobile impact crusher...

Embodiment 2

[0030] On the basis of Embodiment 1, in step 1, classify the construction waste according to the degree of resource utilization, that is, the construction waste can be directly used, recycled and recycled, and non-recyclable, so as to reduce the cost of subsequent construction waste resource treatment. load and cost.

[0031] In step 2, the scrap iron is screened out for recycling.

[0032] In step 3, wind separation equipment for light substances is installed on the crushing and screening equipment, and the traditional process of sorting light substances by washing is changed to save water resources and solve the problem of secondary pollution.

[0033] In step 4, after screening by vibrating screening machine, two grades and two types of aggregates are screened out, namely recycled masonry fine aggregate, recycled masonry coarse aggregate, recycled concrete fine aggregate, recycled concrete Coarse aggregate.

[0034] In step 4, the particle size of the regenerated masonry ...

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Abstract

The invention provides a construction waste resourceful treatment method. The method comprises the following steps: classifying construction waste according to the resourceful degree; when processing raw materials, performing primary screening on the construction waste by using pre-screening equipment; performing magnetic separation on the residual construction waste; performing primary crushing by using a movable jaw crusher, and performing winnowing to screen out light substances in the construction waste; and then performing final crushing and screening on construction raw materials with a movable impact crusher and a vibrating screen classifier to obtain four renewable aggregates. In the whole production process, the sorting effect is good, particles of various types and grades are separated carefully, and the quality of final regenerated products is good, so that resource utilization of construction waste is achieved.

Description

technical field [0001] The invention relates to the technical field of recycling construction waste, and more specifically relates to a method for recycling construction waste. Background technique [0002] Construction waste refers to the dregs, residual mud, spoils, waste materials and other wastes generated during the construction, laying, or demolition of various buildings and structures. In recent years, with the continuous development of urbanization, the amount of construction waste generated in my country is also increasing day by day. The amount of construction waste generated in my country has reached hundreds of millions of tons every year. If these construction wastes cannot be treated and utilized reasonably and effectively, it will not only cause a huge waste of resources, but also cause long-term and large-scale harm to the ecological environment. However, the resource utilization rate of construction waste in my country at this stage is still less than 10%, ...

Claims

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Application Information

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IPC IPC(8): B09B3/00B09B5/00C04B18/16
CPCB09B3/00B09B5/00C04B18/16Y02W30/58Y02W30/91Y02W30/20
Inventor 毛国柱李明民焦坤陈江运史考吴艳丽
Owner TIANJIN UNIV
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