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Ecological treatment technology for construction waste

A construction waste and processing technology technology, which is applied in the fields of building materials, energy conservation and environmental protection, and construction waste recycling, can solve the problems of difficulty in preparation and high value-added utilization, and achieves low elastic modulus, high water absorption, The effect of high water consumption

Inactive Publication Date: 2014-04-30
DALIAN HONG YUAN GREEN BUILDING MATERIALS
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

At the same time, due to the differences in the density of concrete, bricks, sandstone, and muck in construction waste, it is difficult to prepare "Regenerated Coarse Aggregate for Concrete" (GB / T25177-2010), "Regenerated Fine Aggregate for Concrete and Mortar" Materials" (GB / T25176-2010) standards for recycled aggregates of Class I and Class II indicators, cannot achieve high value-added utilization

Method used

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  • Ecological treatment technology for construction waste
  • Ecological treatment technology for construction waste
  • Ecological treatment technology for construction waste

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Embodiment Construction

[0046] The construction waste ecological classification treatment technology of the present invention comprises the following steps:

[0047] 1. Pretreatment, carry out natural air-drying in the construction waste dump, and the site is equipped with a canopy:

[0048] a. For the initial selection, metal materials, wood materials and plastic materials are classified by manual and excavator (crushing and handling of bulk materials);

[0049] b. Sorting out waste bricks and broken glass and separating them from waste concrete;

[0050] c. Initial screening, the fine material (mainly soil) contained in the construction waste is separated through a vibrating screen, and the soil is fertilized for the production of grass planting bricks. The rest is the pre-treated mixture of construction waste, which will be used for later use.

[0051] As a further improvement, the pretreatment step of the construction waste is to classify metal materials, wood materials and plastic materials. ...

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Abstract

The invention belongs to the field of recycling of construction waste, energy conservation and environment protection, and construction materials, and relates to an ecological treatment technology for construction waste, and particularly relates to the ecological treatment technology for construction waste and a preparation method for regenerated novel construction materials, which can efficiently use the construction waste and does not generate secondary pollution. The ecological treatment technology comprises the following steps of pretreating in a construction waste dump, namely, air drying the construction waste, crushing big blocks, sorting and removing soil through vibrating, adding a fertilizer in the soil to be used for filling grass planting bricks; preparing recycled aggregate, namely, crushing roughly, removing impurities, precisely crushing and simultaneously reinforcing and shaping the recycled aggregate, screening out the recycled aggregate with particle size less than 0.15mm as well as 0.15-5mm, 5-15mm and 15-25mm and micro powder for the secondary time, finally, separating the brick from concrete by a gravitational method or a hydraulic mineral beneficiation method according to different densities of the brick and concrete in the mixed recycled aggregate. Recycling and high value-added utilization of the construction waste are realized, and the ecological treatment technology gets major breakthrough in recycling industry of construction waste.

Description

technical field [0001] The invention belongs to the fields of construction waste recycling, energy saving and environmental protection, and building materials, and relates to an ecological treatment process for construction waste. It is an ecological treatment technology for construction waste and a preparation technology and process for regenerated new building materials, and is suitable for the needs of different building materials. . Background technique [0002] As the most discharged urban waste, construction waste, fly ash and industrial waste have become the focus of solving environmental pollution, reducing pollution emission rate, and improving resource productivity. Turning construction waste and industrial waste into treasure is a key research and development project of waste reuse. Its recycling and recycling can not only protect the environment and reduce its impact on the environment, but also reduce and reduce it if scientific management and effective measures...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/16
CPCY02W30/91
Inventor 王和福丛卫军周兴君陈尚华周志霞王卿昆
Owner DALIAN HONG YUAN GREEN BUILDING MATERIALS
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