Vitrification reagent for preparing glass melt piece for X fluorescence analysis and use method thereof

Abstract

The invention provides a glass reagent for preparing glass fuse pieces used for metallurgical flux X-ray fluorescence analysis, consisting of anhydrous lithium tetraborate or mixture of anhydrous lithium tetraborate and lithium metaborate, and boric acid. A method for preparing the glass fuse pieces includes: firstly adding the anhydrous lithium tetraborate or the mixture of anhydrous lithium tetraborate and lithium metaborate in the metallurgical flux, then fusing at a high temperature for 12-15mins in a platinum yellow pot, preparing the glass fuse pieces after cooling; or fully mixing the boric acid with the anhydrous lithium tetraborate or the mixture of the anhydrous lithium tetraborate and lithium metaborate in advance, preparing the fast fused glass reagent and then mixing with the metallurgical flux, then fusing at the high temperature for 12-15mins in the platinum yellow pot, and preparing the glass fuse pieces after cooling. The glass reagent has accurate and stable analysis results, and greatly shortens the analysis period of the metallurgical fusing agent.

Description

technical field [0001] The invention relates to the field of X-fluorescence analysis, in particular to X-fluorescence analysis using a glass frit. Background technique [0002] Metallurgical fluxes include marble, limestone, lightly burned dolomite, metallurgical lime, active lime, etc., and its main components are CaCO3 and MgCO3. At present, X-ray fluorescence analysis is used to analyze the chemical composition of metallurgical flux, and there are two analysis methods for this analysis method: [0003] A: The powder tableting method is used to make the sample smaller than 180 mesh, and put it in an aluminum or plastic cup. The sample is pressed and formed by a tablet machine, and then analyzed by X-ray fluorescence. This analysis method has a big defect. The analysis results are severely restricted by the particle size effect and mineral effect, its application is severely weakened, and it is generally no longer used in rigorous laboratories; [0004] B: The glass fusin...

AI Technical Summary

Problems solved by technology

[0005] Now the most used method (ordinary glass fusing method) is: first burn the metallurgical flux to eliminate CO2, then quantitatively weigh the burnt sample, add vitrification reagent to make glass fusing, and then carry out X-ray fluorescence analysis, the analysis data is accurate, but the analysis period of this method is very long, and it takes more than 1.5 hours for burning, about 20 minutes for melting, and the analysis period is at least 2 hours

[0006] The other is the direct glass fusing method, that is, directly mix the vitrification reagent and the metallurgical flux without burning, pour it into a platinum yellow pot and melt it for about an hour. This method has two defects, one is the glass fusing bubbles Not exhausted, causing the glass frit to burst. One is that the glass frit contains air bubbles, which makes the analysis result unstable and easy to be too high.