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Method for producing renewable aggregate by using construction waste

A technology of construction waste and recycled aggregates, which is applied in the field of construction waste treatment in cities, can solve the problems of increasing the workload of crushers, easy dust flying, environmental pollution, etc., to reduce dust flying, reduce workload, and reduce environmental pollution Effect

Inactive Publication Date: 2009-09-30
潍坊三建滨海建筑材料有限公司
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Problems solved by technology

[0003] At present, there is also a method of using construction waste to make recycled aggregates. For example, firstly, it is necessary to manually sort and classify metal materials, wood materials and plastic materials, supply them to the corresponding company for processing, and then crush the construction waste to make Recycled aggregate, however, when construction waste enters the crusher, it contains a large amount of fine materials that cannot be used as recycled aggregate, which will easily increase the workload of the crusher and waste energy, and it is easy to fly dust when crushing construction waste, causing environmental pollution Pollution

Method used

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  • Method for producing renewable aggregate by using construction waste

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Embodiment Construction

[0019] Such as figure 1 As shown, the present invention utilizes the construction waste whose main components are demolition of buildings, house renovation and road reconstruction, first properly crushes the construction waste and transports it to the treatment site, and then uses artificial methods to directly regenerate the construction waste The used substances, such as metal materials, wooden materials and plastic materials, are sorted and classified, and directly supplied to the corresponding companies for processing. Then, the recycled aggregate of the present invention is obtained through the steps of primary screening, feeding, crushing, conveying, sorting and secondary screening. Such as figure 2 As shown, the specific steps are as follows:

[0020] 1) Initial screening, the initial screening step is to separate the fine material contained in the construction waste through a single-stage vibrating screen 1, and this process will filter out about 10% of the soil con...

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Abstract

The invention discloses a method for using construction waste to produce renewable aggregate. Through the steps of primary selection, material feeding, crushing, conveying, selection, secondary selection, and the like, the construction waste is crushed into a construction aggregate mixture from which the renewable aggregate with a regulated particle size is selected, so that the discarded construction waste can be recycled. Except a small amount of earth, all construction waste can be fully used, so that the secondary pollution is prevented, the environment is protected and the land is conserved. The method realizes actual comprehensive utilization rate of the construction waste close to 100 percent and achieves the utilization of the city construction waste as a resource.

Description

technical field [0001] The invention relates to a method for processing construction waste in cities, in particular to a method for producing regenerated aggregates from construction waste. Background technique [0002] The main components of construction waste are concrete, bricks, sand, gravel, etc. With the progress of urban construction, construction of new projects, old city renovation and demolition, road reconstruction, etc., will inevitably produce a large amount of construction waste. At present, the amount of construction waste has accounted for 30%-40% of the total amount of urban waste. Most of the construction waste is transported by the construction unit to the suburbs or rural dumps designated by the relevant departments without any treatment. The disposal is open-air stacking. Or landfill, which will consume a large amount of land resources, and at the same time, problems such as dust, dust and sand flying in the process of clearing, transporting and stacking...

Claims

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Application Information

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IPC IPC(8): C04B18/16B09B3/00
CPCY02W30/20Y02W30/58Y02W30/91
Inventor 王连溪李福勇赵德叶高连涛
Owner 潍坊三建滨海建筑材料有限公司
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