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

A fluorescence spectrum and barite technology, which is applied in the field of analysis of fluorite, barite and lapis lazuli, can solve the problems of difficult separation, time-consuming and laborious, lengthy process, etc., to simplify the operation steps, reduce reagent consumption, The effect of shortening the preprocessing time

Inactive Publication Date: 2018-05-18
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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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 deter

Method used

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

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Embodiment Construction

[0022] Select barite ore composition analysis standard materials GBW07812, GBW07813, fluorite composition analysis standard materials GBW07251, GBW07253, laboratory rare earth ore standard materials, strontium sulfate, strontium carbonate (spectral pure) and mix them in a certain proportion to prepare artificial standard materials. See Table 1 below.

[0023] Table 1 Composition of standard substances

[0024]

[0025] The unit of each component in Table 1 is %.

[0026] Weigh 8.0000 g of mixed flux (lithium tetraborate: lithium metaborate = 12:22), pour it into a platinum yellow crucible, add 0.8000 g of standard substance, 0.1000 g of release agent ammonium iodide, stir and mix with a glass rod.

[0027] Put the platinum yellow crucible into the melting machine at 1100 ℃, and melt the samples according to the following procedures: select working mode 1, set the pre-melting time to 300 s, the melting time to 300 s, and the standing time to 20 s, and then take out the plat...

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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...

Claims

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Application Information

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IPC IPC(8): G01N23/223
CPCG01N23/223
Inventor 李可及李刚赵改红卢彦邵坤
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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