A method for phase classification of coal combustion fly ash

By combining consolidation sample preparation and scanning electron microscopy energy dispersive spectroscopy analysis with a mineral analysis system, the problems of insufficient information and sample destructiveness in the study of the phase composition of coal combustion fly ash have been solved. This has improved the accuracy of multi-element micro-area analysis and phase classification, and supported the formulation of resource utilization pathways.

CN120507388BActive Publication Date: 2025-10-21BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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Patent Information

Application Number
CN202511007546.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-07-22
Publication Date
2025-10-21
Estimated Expiration
2045-07-22

AI Technical Summary

Technical Problem

Existing technologies for studying the phase composition of coal combustion byproducts face challenges such as limited information dimensions, high destructiveness, poor sample reusability, and a lack of suitable models for automatic identification systems, making it difficult to achieve accurate identification and quantification of components.

Method used

By using consolidation sample preparation and scanning electron microscopy energy dispersive spectroscopy analysis, the elemental composition of multiple particle microregions of coal combustion fly ash samples was obtained. Based on the content of the main control elements and target elements, phase classification was performed, and automatic identification and database updates were carried out in conjunction with a mineral analysis system.

Benefits of technology

It enables non-destructive, multi-element micro-area analysis, improving the accuracy and fundamental nature of phase classification and providing a more scientific basis for component identification and resource utilization.

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Abstract

The application provides a coal combustion fly ash phase classification method and relates to the technical field of coal combustion byproduct analysis. The phase classification method comprises the following steps: preparing a target sample to be analyzed by consolidating a coal combustion fly ash sample; collecting the content of main control elements and target elements based on scanning electron microscope energy spectrum analysis of a plurality of particle micro areas in the target sample to be analyzed; and classifying the phases of a plurality of particles contained in the coal combustion fly ash sample according to the content of the main control elements and the target elements to determine the phase category to which each particle belongs. The method realizes non-destructive and multi-element micro area analysis of fly ash particles through sample consolidation and scanning electron microscope energy spectrum analysis, and completes phase classification based on element content, thereby improving the accuracy of classification and the basicity of research.
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Citation Information

Patent Citations

  • Method for determining trace elements in different particle phase states of coal fly ash

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