Building mortar recycling method and system

Abstract

The invention discloses a building mortar recycling method and system. The method comprises the following steps of sorting waste building mortar from building mortar garbage, removing impurities, and crushing to obtain small-particle mortar, heating at 400-650 DEG C, rapidly cooling to 100 DEG C or below, carrying out ball milling, and screening under the action of wind power to obtain cement paste and regenerated sand, grinding the cement paste to obtain regenerated cement with the size of less than 150 microns, according to the mixing ratio, preparing to obtain the regenerated building mortar by adopting the regenerated sand and the regenerated cement and adding an additive and water, and recycling the regenerated building mortar after the service is ended. The regenerated building mortar produced by the invention is obtained by completely adopting high-quality regenerated cement and regenerated sand obtained in a cyclic utilization process and adding an additive and water, so that the waste building mortar is completely recycled, and the building mortar garbage is directly converted into the regenerated building mortar of which the performance is equivalent to that of the original mortar with the same proportion; the method has the advantages of energy conservation and emission reduction.

Description

technical field [0001] The invention relates to the technical field of construction waste recycling, in particular to a method and system for recycling construction mortar. Background technique [0002] Construction waste refers to the collective name of muck, waste concrete, waste masonry and other wastes generated in the production activities of people engaged in demolition, construction, decoration, repair and other construction industries. At present, the output of construction waste accounts for about 30% to 40% of the total amount of urban waste, and the more traditional treatment methods are direct landfill or accumulation. At present, the resource utilization rate of construction waste is still very low. At present, the mechanical properties and durability of recycled concrete prepared directly from the recycled aggregate produced by crushing construction waste are not as good as ordinary concrete, so that recycled concrete is subject to many restrictions in practic...

AI Technical Summary

Problems solved by technology

At present, more research is focused on the resource utilization of waste concrete, and there is less research on the resource utilization of waste mortar, and the current existing technology cannot achieve the effect of fully recycling waste mortar into high-performance new mortar without adding ordinary cement.

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