Zeolite-like Material from Waste Fly Ash
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Solution Overview
Problem
Current zeolite molecular sieves have high material purity and production complexity, and there is a lack of research on preparing porous zeolite-like materials from hazardous solid wastes such as waste incineration fly ash.
Innovation Solution
A method involving mixing inorganic solid waste with an alkali activator and a binder, followed by precuring, foaming, and calcining to produce a zeolite-like material with a three-dimensional network structure, capable of stabilizing toxic and radioactive substances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If zeolite molecular sieves are prepared using conventional industrial methods, then the material achieves high purity and excellent performance, but the production process becomes complex and costs increase
Solution Approach 1:
The invention converts hazardous solid waste (a harmful factor) into a valuable raw material for zeolite-like material preparation. By using waste incineration fly ash containing silica and alumina as the starting material, the process transforms environmental pollution into a resource, simplifying the overall production system while maintaining material performance.
Solution Approach 2:
The invention changes the purity parameter of raw materials from high purity requirements in conventional zeolite preparation to utilizing low-purity solid waste. This parameter change allows the use of inexpensive, readily available waste materials while achieving the desired zeolite-like structure and performance through controlled alkali activation and hydrothermal treatment.
2Reliability
If high purity raw materials are used for zeolite preparation, then the product quality is ensured, but the production cost increases
Solution Approach 1:
The invention converts hazardous solid waste (a harmful factor) into a valuable raw material for zeolite-like material preparation. By using waste incineration fly ash containing silica and alumina as the starting material, the process transforms environmental pollution into a resource, simplifying the overall production system while maintaining material performance.
Solution Approach 2:
The invention uses inexpensive solid waste materials instead of costly high-purity chemical reagents. The waste incineration fly ash, which would otherwise be discarded, serves as a cheap raw material source, significantly reducing production costs while still enabling the formation of zeolite-like structures with acceptable performance.
3Stability of the object's composition
If conventional zeolite preparation methods are used, then the material structure is well-defined, but the ability to handle hazardous waste is lost
Solution Approach 1:
The invention converts hazardous solid waste (a harmful factor) into a valuable raw material for zeolite-like material preparation. By using waste incineration fly ash containing silica and alumina as the starting material, the process transforms environmental pollution into a resource, simplifying the overall production system while maintaining material performance.
Solution Approach 2:
The invention creates a dual-function process that simultaneously produces zeolite-like materials with useful catalytic and adsorption properties while also solving the problem of hazardous waste disposal. The material serves both as a functional product and as a vehicle for waste stabilization, achieving multiple objectives in one process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method results in a cost-effective, environmentally friendly zeolite-like material with excellent durability, acid resistance, and catalytic properties, capable of curing heavy metal ions and radioactive elements, while simplifying the production process and reducing raw material purity requirements.
Implementation Method 1
mixing an inorganic solid waste and an alkali activator, and conducting an alkali activating reaction to obtain an activated waste
Implementation Method 2
mixing the activated waste with a binder to obtain a mixture, and precuring the mixture under heating to obtain a precured waste, where the binder is selected from the group consisting of an aluminum oxide and an aluminum salt
Implementation Method 3
mixing the precured waste with a foaming agent, and foaming to obtain a foamed waste
Implementation Method 4
precuring the mixture under heating to obtain a precured waste
Implementation Method 5
calcining the cured waste to obtain the zeolite-like material
Data Source
AI summary
Disclosed are a zeolite-like material, and a preparation method and use thereof. In the disclosure, cyclic molecules of the zeolite-like material form a closed cage-like cavity structure with each other. The zeolite-like material is synthesized using an inorganic solid waste as a raw material.