A method for producing high-quality machine-made sandstone using waste glass

By crushing waste glass and reacting it with an alkaline solution to generate water glass, which is then coated onto the surface of manufactured sand and gravel, the problem of underutilization of waste glass is solved, resulting in high-quality manufactured sand and gravel that can be used in permeable materials and concrete, thus improving material performance.

CN117342809BActive Publication Date: 2026-05-29SHANXI OUBEIMU NANO TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANXI OUBEIMU NANO TECH CO LTD
Filing Date
2023-09-28
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Waste glass has not been fully utilized in building concrete, and quartz sand resources are limited. Existing technologies have not been able to effectively utilize waste glass to produce high-quality manufactured sand and gravel.

Method used

By crushing waste glass and reacting it with an alkaline solution to generate water glass, which is then coated onto the surface of manufactured sand and gravel, the particle size distribution is adjusted, resulting in high-quality manufactured sand and gravel with improved strength and surface smoothness.

Benefits of technology

It improves the strength and surface smoothness of manufactured sand and gravel, enhances particle size distribution, and is suitable for the performance of permeable materials and concrete, increasing the compressive strength and permeability of concrete.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a method for producing high-quality machine-made sandstone by using waste glass, and belongs to the technical field of building materials, and comprises the following steps: (1) crushing waste glass to obtain waste glass powder; (2) adding an alkali solution into the waste glass powder, mixing, stirring and reacting at a temperature of 65-85 DEG C for 3-5 hours to obtain a reaction product; and (3) uniformly mixing machine-made sandstone and sodium fluosilicate, then adding the mixture into the reaction product, continuously stirring, and continuously feeding carbon dioxide gas into the container until the liquid in the container is completely absorbed. The waste glass powder is reacted with the alkali solution to obtain water glass, and the water glass is solidified and coated on the surface of the machine-made sandstone, so that the strength and surface smoothness of the machine-made sandstone are improved. Moreover, the particle size distribution of the waste glass powder is reasonably designed, the graded glass particles with the corner part removed are mixed into the machine-made sand as aggregate, and the overall grading distribution of the mixed machine-made sand is improved.
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