Quantitative analysis method for low-grade minerals containing light elements

Abstract

A quantitative analysis method for the low-grade minerals containing the light elements comprises the following steps: S1, preparation of a test sample: crushing a sample to be tested into a polished section, and grinding and polishing the polished section to obtain the test sample; S2, target mineral determination: carrying out mineral automatic quantitative analysis on the test sample by adopting an automatic process mineralogy analysis system, determining a target mineral and marking the position of a monomer particle of the target mineral; S3, target mineral extraction: taking out target mineral monomer particles at marked positions; and S4, target mineral analysis: carrying out X-ray powder crystal diffraction measurement and searching a matched phase. According to the method, the technical barrier of combined application of an automatic process mineralogy analysis system and X-ray powder crystal diffraction is broken through, broken minerals in a test sample are marked and taken out, and by utilizing positioning of the scanning electron microscope and the comprehensive data matching capability of the X-ray powder crystal diffraction, the content of the broken minerals in the test sample is determined. The method can accurately identify light element-containing low-grade minerals which are difficult to detect at present and perform quantitative detection and analysis, and overcomes mineral detection shortages in recent 30 years.

Description

technical field [0001] The invention relates to the technical field of geological mineral detection, in particular to a quantitative analysis method for low-grade minerals containing light elements. Background technique [0002] Analytical methods for minerals in geological samples such as rocks, ores, and sediments include polarizing microscopy, automatic process mineralogy analysis systems, and X-ray diffraction methods. [0003] Polarized light microscopy can identify some minerals containing light elements with obvious differences in optical characteristics, but this method is not only difficult to identify minerals containing light elements with insignificant differences in optical characteristics, but also cannot accurately quantitatively analyze low-grade minerals, and it is time-consuming and laborious. [0004] The MLA method is commonly used in the automatic process mineralogy analysis system method, which is a method of automatic quantitative analysis of minerals ...

AI Technical Summary

Problems solved by technology

However, with the deepening of scientific research and the improvement of rigor, when such low-grade minerals containing light elements gradually become the main purpose minerals of research, such inaccurate test results will have a relatively large impact on the development and utilization of this ore

[0007] However, there is still a lack of a method that can identify low-grade minerals containing light elements in geological samples, let alone a method that can quantitatively analyze these minerals

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