Regenerated active powder prepared from construction waste as well as method and device thereof

Abstract

The invention relates to regenerated active powder prepared from construction waste as well as a method and a device thereof, the method comprises the following steps: S1, crushing the construction waste, and removing steel bars so as to obtain a crushed material with the particle size of not more than 50 mm; removing ferromagnetic substances and light impurities in the crushed material to obtainan impurity removal material; S2, screening the impurity removal material to obtain a medium-particle-size material with the particle size of 5-50 mm and a small-particle-size material with the particle size of less than 5 mm, and removing soil carried by the small-particle-size material to obtain a soil-removing material; S3, sequentially drying and grinding the medium-particle-size material andthe soil-removing material obtained in the step S2 so as to obtain regenerated materials; and S4, mixing the regenerated materials, coal ash and mineral powder in a weight ratio of (10-100): (0-90): (0-90). The device disclosed by the invention comprises a primary crushing system, a secondary crushing system, an impurity removal system, a first screening system, a second screening system, a dryingsystem and a grinding system. The regenerated active powder disclosed by the invention has better activity performance.

Description

technical field [0001] The present disclosure relates to the technical field of construction waste recycling, in particular, to a regeneration active powder prepared from construction waste and its method and device. Background technique [0002] Construction waste is solid waste generated during the process of new building, reconstruction, expansion or demolition of buildings. According to different sources of construction waste, it can be divided into construction waste and demolition construction waste. Construction waste, as the name implies, is in Solid waste generated during new construction, reconstruction or expansion projects, and demolition construction waste is the construction waste generated during the demolition of buildings. Construction waste has a wide range of erosive effects on our living environment. If construction waste is ignored for a long time, it will have a bad impact on urban environmental sanitation, living conditions, and land quality assessment...

AI Technical Summary

Problems solved by technology

First of all, a large amount of construction waste piled on the land will reduce the quality of the soil and reduce the productivity of the soil; moreover, the pile of construction waste in the air will affect the air quality, and some dust particles will be suspended in the air, which is harmful to human health; During the stacking process, the long-term accumulation will cause harmful substances in the construction waste to seep into the groundwater and pollute the water environment; moreover, there may be some safety hazards in the stacking of construction waste, and some accidents may occur at any time

There are also methods for recycling construction waste in the prior art, but the recycled materials obtained by the prior art often have low compressive strength and low activity

Images