Crushing and sorting disposal system for construction waste

Abstract

The invention provides a crushing and sorting disposal system for construction waste and belongs to the technical field of construction waste disposal. The crushing and sorting disposal system for theconstruction waste specifically comprises a construction waste dumping site, a vibration feeder, a primary crushing and screening unit, a light substance flotation selecting unit and a secondary crushing and screening unit which are arranged in sequence. The primary crushing and screening unit crushes bulk construction waste and carries out primary screening on the bulk construction waste. The light substance flotation selecting unit carries out flotation selecting on raw materials obtained after crushing, screening and impurity removing, light substances and heavy materials are obtained, andthe heavy materials enter the secondary crushing and screening unit to be crushed into needed particle size and screened into recycled aggregate with different particle sizes. According to the crushing and sorting disposal system for the construction waste, the construction waste is divided into soil materials, waste wood, waste metal and steel and recycled aggregate with different particle sizes, finer and higher efficiency sorting and screening of the construction waste are achieved, and full recycling and resource utilization of all parts of the construction waste are achieved.

Description

technical field [0001] The invention relates to the technical field of construction waste treatment, in particular to a crushing and sorting treatment system for construction waste. Background technique [0002] With the acceleration of industrialization and urbanization, the construction industry is also developing rapidly, and the accompanying construction waste is increasing. The amount of construction waste in China has accounted for more than 1 / 3 of the total urban waste, and a large amount of land is piled with construction waste. Finally, the soil quality decreases, and the productivity of the soil decreases accordingly; secondly, construction waste is piled up in the air, which affects air quality, and some dust particles will be suspended in the air, which is harmful to human health; moreover, long-term accumulation of construction waste leads to Hazardous substances seep into the groundwater and pollute the water environment; therefore, the disposal of construction...

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Problems solved by technology

[0002] With the acceleration of industrialization and urbanization, the construction industry is also developing rapidly, and the accompanying construction waste is increasing. The amount of construction waste in China has accounted for more than 1 / 3 of the total urban waste, and a large amount of land is piled with construction waste. Finally, the soil quality decreases, and the productivity of the soil decreases accordingly; secondly, construction waste is piled up in the air, which affects air quality, and some dust particles will be suspended in the air, which is harmful to human health; moreover, long-term accumulation of construction waste leads to Hazardous substances seep into the groundwater and pollute the water environment; therefore, the treatment of construction waste is imminent

[0003] At present, most of the construction waste treatment is sorting, crushing, magnetic separation, screening and other processes, using waste construction concrete and waste masonry to produce coarse and fine aggregates, producing concrete and mortar with corresponding strength levels, or preparing such as blocks, wall panels, For floor tiles and other building materials, coarse and fine aggregates can also be used in the base course of road pavement after adding solidified materials, which only realizes the recycling of coarse and fine aggregates, and the recycling rate is low, making it difficult for resource utilization enterprises to generate profits; secondly, there is a lack of targeted The mature process technology for the systematic treatment of mixed construction waste resources has problems such as lack of systematic impurity removal methods, low treatment efficiency, and unstable product quality.

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