Construction waste comprehensive treatment method

Abstract

The invention discloses a construction waste comprehensive treatment method which comprises the following steps: primary crushing, sorting, primary magnetic separation, secondary crushing, secondary magnetic separation, primary screening, tertiary crushing and tertiary screening. The construction waste comprehensive treatment method can be used for thoroughly sorting foreign matters in the construction waste, thereby enhancing the quality of the regenerative aggregate. The invention has the advantages of reasonable procedure arrangement, low labor consumption and high efficiency, and is simple to operate. When being used for treating construction waste, the method has the social benefits of saving land resources and reducing environmental pollution.

Description

technical field [0001] The invention relates to the technical field of construction waste treatment. Background technique [0002] With the acceleration of urbanization, the construction waste generated by urban construction and old city renovation has become a major public hazard in the city. According to relevant data, at present, the solid waste generated by the demolition of buildings in my country is about 200 million tons, and the solid waste generated by new buildings is about 100 million tons, and the total of the two items is about 300 million tons. my country's existing buildings are 40 billion square meters. According to the calculation of the building's service life of 100 years, the average annual building demolition is 400 million square meters, and the average annual construction waste is 500 million tons. In addition, the total construction waste generated by construction and building decoration is 600 million. In fact, due to the durability of buildings and ...

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Problems solved by technology

[0004] At present, the construction waste treatment process is also used to process construction waste, but the existing treatment process is not perfect, most of the recycled aggregates after treatment have uneven particle size, and the scope of application is limited

And because the construction waste contains a large amount of metal, bamboo and plastic sundries, among which the bamboo, wood and plastic sundries are crushed together with the construction waste and mixed in the recycled aggregate, which is very important for the manufacture of load-bearing building materials. It will reduce the strength, and metal debris is generally difficult to break, and it is easy to cause equipment blockage if left in the processing process, affecting the normal use of the equipment, and even shutting down the maintenance to affect the production process. If the metal debris is mixed in the produced recycled In the aggregate, it will also affect the processing and final quality of building materials

However, the existing construction waste treatment methods do not sort bamboo, wood and plastic debris, but only perform magnetic separation on metal debris, and the arrangement of the magnetic separation steps is unreasonable, and the magnetic separation device used is not only expensive And the sorting effect is not ideal

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