Construction waste recycling process

A technology of construction waste and technology, which is applied in the field of construction waste recycling and reuse technology, can solve the problems that it is difficult to prepare recycled aggregates and cannot realize high value-added utilization, so as to achieve good removal effect, reduce cracks, and avoid environmental pollution Effect

Inactive Publication Date: 2020-08-04
湖州恒通机械设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the differences in the densities of concrete, bricks, sand, and muck in construction waste, it is difficult to prepare recycled aggregates that meet the above standards, and high value-added utilization cannot be realized.

Method used

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  • Construction waste recycling process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment provides a construction waste recycling process, comprising the following steps:

[0040] Step S1, primary crushing: sending the construction waste into the crusher A for crushing. In this embodiment, the crusher A is a jaw crusher;

[0041] Step S2, magnetic separation: passing the first-stage crushed construction waste through a magnetic separator to remove metal impurities in the construction waste;

[0042] Step S3, washing flotation: sending the construction waste after magnetic separation into the washing flotation machine to remove floating impurities such as plastics, wood, waste paper and soil in the construction waste;

[0043] The washing flotation machine is an existing technology, and its working principle is: construction waste passes through the water flow of the washing flotation machine, because some plastics, wood, waste paper and other impurities are relatively light in weight, and will float under the action of hydraulic force. Then ...

Embodiment 2

[0054] The difference between this embodiment and Embodiment 1 is that the working temperature of the dryer is 300°C.

Embodiment 3

[0056] The difference between this embodiment and Embodiment 1 is that the working temperature of the dryer is 500°C.

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Abstract

The invention discloses a construction waste recycling process, and relates to the field of construction waste recycling treatment. The construction waste recycling process comprises the following steps of primary crushing, magnetic separation, washing flotation, winnowing, primary screening, secondary crushing, drying, secondary screening, aggregate shaping and tertiary screening. According to the construction waste treatment process disclosed by the invention, the construction waste is treated into the recycled aggregate, so that the quality of the aggregate is improved, the efficient recycling of resources is realized, and meanwhile, the pollution of landfill construction waste to the environment is avoided.

Description

technical field [0001] The present disclosure relates to the field of recycling and processing of construction waste, in particular to a recycling and reuse process of construction waste. Background technique [0002] Construction waste refers to the waste soil, discarded materials and other wastes generated in the process of new construction, reconstruction, decoration and demolition of various buildings, mainly including construction dregs, waste bricks, waste concrete, steel, wood and plastics and other materials. [0003] With the acceleration of industrialization and urbanization, the construction industry is also developing rapidly, resulting in a large amount of construction waste. If only landfilling these construction wastes will not only require a large number of landfills, but also cause waste of soil resources, etc. And it will cause great pollution to soil, groundwater quality, etc., and it does not conform to the sustainable development strategy. [0004] Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B03C1/30B07B9/00B07B1/28B03B9/06F26B21/10C04B20/04C04B20/02C04B18/16
CPCB02C21/00B03B9/065B03C1/30B07B1/28B07B9/00C04B20/02C04B20/026C04B20/04F26B21/10C04B18/16Y02W30/52Y02W30/58Y02W30/62Y02W30/91
Inventor 胡建明温智阳周玲
Owner 湖州恒通机械设备有限公司
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