X-ray fluorescence spectrometry method for simultaneously analyzing fluorspar, barite and celestite

Abstract

The invention discloses an X-ray fluorescence spectrometry method for simultaneously analyzing fluorspar, barite and celestite in ores quantitatively. The X-ray fluorescence spectrometry method comprises the following specific processes: preparing an artificial standard substance by mixing a barite standard substance, a fluorite standard substance, rare earth ore standard substance, strontium sulfate and strontium carbonate, fusing the artificial standard substance by using a mixed fusing agent (the ratio of lithium tetraborate to lithium metaborate is 12:22), scanning obtained standard samples to determine an instrument condition, correcting a matrix effect, and then establishing a standard curve; treating a sample to be tested by using a strontium-containing acetic acid solution, filtering, separating an interferent, ashing a precipitate and filter paper, then adding the mixed fusing agent (the ratio of lithium tetraborate to lithium metaborate is 12:22) for fusing, and analyzing according to the standard curve. An X-ray fluorescence spectrometer is selected as an analytical instrument, pretreatment operation is simplified, and simultaneous quantitative analysis of three components, namely the fluorite, the barite and the celestite, in the ore is achieved; the X-ray fluorescence spectrometry method is suitable for analyzing the single ore or the ore containing the fluorite, the barite and the celestite.

Description

technical field [0001] The present invention relates to the analysis method of fluorite, barite and lapis lazuli, especially a kind of X-ray fluorescence spectrum method of simultaneously analyzing fluorite, barite and lapis lazuli, can measure fluorite, barite and lapis lazuli in ore simultaneously by the method of the present invention Barite and lapis lazuli content. Background technique [0002] Fluorite is the most useful fluorine mineral in industry, often used in metallurgy and chemical industry. Barite, as a barium-containing sulfate mineral, is an important industrial mineral raw material for the production of barium and barium compounds, and is also used as a weighting agent for oil and natural gas drilling mud. As one of the main industrial minerals of strontium, celestite is used for refining and preparing various strontium-containing compounds. Non-metallic mineral resources such as fluorite, barite, and lapis lazuli are associated with some rare earth deposit...

AI Technical Summary

Problems solved by technology

[0003] Fluorite, barite, and lapis lazuli need to be sampled separately by classical methods, and then analyzed and determined by EDTA volumetric method or FAAS / ICP-OES after separation and interference. The operation is cumbersome and the process is lengthy

Calcium, strontium, and barium are all alkaline earth metals with similar properties, and it is difficult to separate them completely, which leads to the application of EDTA volumetric method to analyze CaF 2 Often requires additional correction; BaSO determined by flame atomic absorption spectrometry (FAAS) or inductively coupled plasma spectrometry (ICP-OES) 4 Medium Ba or SrSO 4 Two times of filtration and separation are required before adding Sr, which is time-consuming and laborious

[0004] For X-ray fluorescence spectrometry, its excellent linear range and good reproducibility make it widely used in the field of geology and mineral resources, but the simultaneous analysis of CaF in samples by XRF 2 , BaSO 4 and SrSO 4 The analysis method has no precedent

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