Water granulated slag XRF (x-ray fluorescence) quantitative analysis method

Abstract

The invention discloses a water granulated slag XRF quantitative analysis method. Firstly an X fluorescent spectrometry is adopted to detect systematic element content of a standard water granulated slag sample to build the standard curve of the element content and the element X fluorescence intensity, then water granulated slag samples with different water contents are prepared, the X fluorescentspectrometry is adopted to detect the element feature X fluorescence intensity and the background noise intensity in the samples, meanwhile, a moisture analyzer is utilized for detecting and calculating the water contents of the samples, accordingly the relation between the water content and the element X fluorescence intensity and the relation between the water content and the background noise intensity in the calibrated sample are obtained, and a water content modified model of the relation between the background intensity and the element feature X fluorescence intensity based on differentwater contents is built; and a water granulated slag XRF quantitative analysis model is finally obtained by combining the calibration curve and the water content modified model. The quantitative analysis method overcomes the defects of influences of the water content when the water granulated slag element content is analyzed by using the X fluorescent spectrometry and being difficult to obtain thesample water content.

Description

technical field [0001] The invention belongs to the field of quantitative analysis methods for water slag X-ray fluorescence spectroscopic analysis, and in particular the invention relates to a method for quantitative analysis of water slag XRF detection. Background technique [0002] With the rapid development of my country's iron and steel industry, the blast furnace ironmaking technology suitable for countries with initial industrialization has also made great progress. However, under the new environment and new needs, blast furnace ironmaking is faced with long production cycles, low-grade products, and the need for secondary processing. Low profit and many other disadvantages urgently need to be upgraded. In the process of blast furnace ironmaking, when the furnace temperature reaches 1400-1600°C, useless solid substances such as gangue in iron ore will become solid waste floating on the molten iron to become blast furnace slag, and the blast furnace slag in the hot melt...

AI Technical Summary

Problems solved by technology

During the online XRF analysis test, the change of water content in the sample will affect the accuracy of the X-ray fluorescence analysis results. This effect is mainly manifested in the absorption of primary rays and secondary rays (characteristic X-rays and scattered X-rays) by the water content of the sample. and the scattering of the primary ray, which reduces the intensity rate of the characteristic X-fluorescence of the target element recorded by the instrument, resulting in a large deviation in the results of quantitative analysis

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