X-ray fluorescence spectrum analysis method for continuous casting mold flux

Abstract

A continuous casting powder X-ray fluorescence spectrometry mainly comprises the following steps of producing calibration samples by mixing a standard blast furnace slag sample, a standard fluorite sample and a standard coke component sample together, producing the synthetic standard blast furnace slag sample, the synthetic standard fluorite sample and the synthetic standard coke component sample into standard sample photos which can be analyzed by an X-ray fluorescence spectrometer in a melting method, scanning one or more standard sample photos which are melted well with the X-ray fluorescence spectrometer, measuring all the standard sample photos with the X-ray fluorescence spectrometer according to the fundamental analysis condition, producing samples to be measured into sample photos which can be analyzed by the X-ray fluorescence spectrometer in a melting method, analyzing the samples to be measured and conducting X-ray fluorescence spectroscopy analysis to the samples to be measured with the X-ray fluorescence spectrometer.

Description

technical field [0001] The invention belongs to the field of analysis methods, in particular to an X-ray fluorescence spectrum analysis method for continuous casting mold slag used in the production process of iron and steel continuous casting. The analysis components include SiO 2 , CaO, MgO and Al 2 o 3 . Background technique [0002] Continuous casting mold slag is a material used in the continuous casting process of iron and steel. Its function is to form a semi-fluid layer between the mold and molten steel to protect the mold from damage and prevent the molten steel surface from being oxidized by air. The chemical composition in mold flux is closely related to its performance, so it is very important to quickly and accurately analyze the chemical composition and content of mold flux. For the analysis of different chemical components in continuous casting mold flux, according to the current metallurgical industry standard YB / T190, the perchloric acid dehydration gravi...

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Problems solved by technology

[0004] ① The matrix of the standard sample and the sample to be tested are inconsistent, causing the matrix effect of the analysis to affect the accuracy of the analysis;

[0005] ②The influence of the loss on ignition and its fluctuation in the mold flux on the determination of the chemical composition in the mold flux by X-ray fluorescence spectrometry was not corrected, which affected the accuracy of the analysis;

[0006] ③ The damage of carbon element to the platinum alloy crucible during melting sample preparation is not considered, and the necessary protection measures for the platinum alloy crucible are lacking

[0007] Due to the above problems, this method has not been widely used in industry so far.

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