Earlier-stage treatment production line for construction waste resource utilization

Abstract

The invention discloses an earlier-stage treatment production line for construction waste resource utilization, and belongs to the technical field of construction waste solid waste treatment. The production line comprises a soil separation part, a crushing part and a magnetic separation part, wherein the crushing part comprises a multi-level crushing device; the magnetic separation part comprisesa first magnetic separation device and a second magnetic separation device which are used for rough separation and fine separation respectively, a lifting conveying belt is connected to the rear portion of the magnetic separation part, and the soil separation part is connected to the rear portion of the lifting conveying belt; the soil separation part comprises a soil separation device, the soil separation device comprises multiple levels of vibratory conveying belts, a settling pond is arranged below each vibratory conveying belt, and a filtering channel is arranged between every two settlingponds; and dust removal devices are arranged beside the multi-level crushing device and the soil separation device respectively. According to the production line, metal impurities in raw materials can be removed thoroughly, water circulation of the soil separation device is realized, water consumption is greatly reduced, meanwhile, the air environment of a production base is guaranteed, and the air quality of the surrounding environment is prevented from being affected.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment of construction waste, in particular to a pre-processing production line for resource utilization of construction waste. Background technique [0002] Construction waste refers to the dregs, spoils, waste materials, silt and other wastes generated during the construction, laying or demolition, and repair of various buildings, structures, and pipe networks by construction units or individuals. Classified by source, construction waste can be divided into construction waste, decoration waste, demolition waste, engineering mud, etc.; classified by composition, construction waste can be divided into waste, concrete blocks, broken stones, brick fragments, Waste mortar, asphalt block, waste plastic, waste metal, etc. [0003] Coarse and fine aggregates are produced from waste building concrete and waste masonry, which can be used to produce concrete and mortar of corresponding strength lev...

AI Technical Summary

Problems solved by technology

[0006] However, in the production process of the construction waste recycling base, we found that there are still some problems that have not been effectively solved, which easily affect the efficiency of processing and the quality of products. For example, it involves the important link of metal recycling in raw materials. Because only a magnet plate is simply set above the conveyor belt for adsorption, it is easy to miss the relatively small metal impurities and make them flow into the next processing step

Moreover, after the magnet plate is full of metal impurities, it is difficult to clean it in time, resulting in worsening adsorption effect, and it is easier to miss more metal impurities; for example, in the existing production line, the surface of construction waste is often bonded For some soil, or other dust-like fine materials, the soil separation device used often consumes a lot of water during use, and the structure is relatively complicated, which not only makes the manufacturing cost higher, but also has many parts and components that are prone to failure, increasing the maintenance rate and Difficulty in maintenance; another example is that there is always a lot of dust in the production base, and a large number of tiny particles often float in the air on the construction site. The dust that is about to be evaporated, combined with water droplets and fell to the ground has been blown by the wind and scattered everywhere, which continues to affect the respiratory health of workers on the construction site

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