Method for analyzing components of iron ore by using X-ray fluorescence spectrum

A fluorescence spectroscopy, iron ore technology, applied in the field of X-ray fluorescence spectroscopy analysis of iron ore components, can solve the problems of time-consuming, troublesome, error-prone, etc., and achieves simplified measurement procedures and time, high measurement accuracy, and reduced costs. Effect

Inactive Publication Date: 2009-09-09
HUNAN VALIN XIANGTAN IRON & STEEL CO LTD
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Problems solved by technology

But these two methods all have some disadvantages: the accuracy of iron element determination cannot be guaranteed after melting once, and iron element is the most important element in iron ore, and basically every iron ore sample will analyze iron element, which means It means that after using the standard method to analyze the iron ore, it is necessary to use other methods to measure the iron content, which is troublesome; when adding the degrinding agent or oxidant before melting the sample, each sample is accurately weighed and added, which is time-consuming ; After the sample analysis is completed, th

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  • Method for analyzing components of iron ore by using X-ray fluorescence spectrum

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[0029] Examples:

[0030] Reagents and materials: P10 gas, a mixed gas composed of 90% argon and 10% methane, used for flow gas proportional counter.

[0031] Flux: premium grade pure lithium tetraborate or lithium tetraborate and lithium metaborate 67+33 mixed flux, bake at 500°C for 4 hours, and place in a desiccator to cool for later use.

[0032] Cobalt trioxide, pure superior grade, bake at 105°C for 1 hour, and cool in a desiccator for later use

[0033] [LiNO 3 =400g / L or NaNO 3 =400g / L and LiBr=400g / L or NH 4 I=400g / L] Mixed solution: Weigh 400.0g analytically pure lithium nitrate or sodium nitrate and 400.0g analytically pure lithium bromide or ammonia iodide and dilute to 1000mL in water.

[0034] HNO 3 :1+5 volume ratio.

[0035] X-ray fluorescence spectrometer: Simultaneous or sequential wavelength dispersion spectrometer, which meets the requirements of "JJG810 Wavelength Dispersive X-ray Fluorescence Spectrometer in the National Metrological Verification Regulations ...

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Abstract

The invention discloses a method for analyzing the components of iron ore by using an X-ray fluorescence spectrum, which comprises before-analysis preparation (1) and analysis report submission (5), and the steps between the before-analysis preparation (1) and the analysis report submission (5) including molten sample manufacturing (2), detection by an internal standard method (3) and analysis by a calibration curve method (4), wherein in the before-analysis preparation (1) step, a working curve (16) is built; in the detection by an internal standard method (3) step, an internal standard line of a molten sample is measured; and in the analysis by a calibration curve method (4) step, the measurement results of the molten sample are obtained. The method completes the measurement of all elements in the iron ore by melting once, is high in measurement accuracy, simplifies process and time for measurement, reduces cost of the analysis of the components of the iron ore, and is suitable to be applied to the iron and steel industry and researches.

Description

technical field [0001] The invention relates to a method for analyzing the chemical composition of iron ore, in particular to a method for melting iron ore into glass flakes by using a melting method, and using a wavelength dispersive X-ray fluorescence spectrometer to measure and analyze total iron, calcium oxide, A method for analyzing the composition of iron ore by X-ray fluorescence spectroscopy of various chemical components such as magnesium oxide, silicon dioxide, sulfur, phosphorus, titanium dioxide, aluminum oxide, manganese oxide, and vanadium pentoxide. Background technique [0002] The traditional iron ore chemical analysis method uses specific chemical reactions for different elements to determine the content of its chemical composition. With the gradual popularization of instrumental analysis in recent years, X-ray fluorescence spectrometer and ICP emission spectrometer are more and more widely used in the analysis of iron ore, especially wavelength dispersive ...

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Application Information

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IPC IPC(8): G01N23/223
Inventor 王志刘青桥贺晓虎曹志强陈卫金胡巍
Owner HUNAN VALIN XIANGTAN IRON & STEEL CO LTD
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