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Metallurgy miscellaneous material fast spectral analysis method

A spectral analysis and rapid technology, applied in the field of spectral analysis, to avoid pollution and improve work efficiency

Inactive Publication Date: 2014-01-15
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0021] The purpose of the present invention is to provide a method for rapid spectral analysis of metallurgical miscellaneous materials, which mainly solves the technical problem that a working curve of the existing fluorescence spectral analysis method for metallurgical miscellaneous materials is only for one material

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Embodiment Construction

[0044] The spectral analysis equipment in this case adopts Panalytical X-ray fluorescence spectrometer, a method for rapid spectral analysis of metallurgical miscellaneous materials. The method includes sample preparation methods and drawing of working curves.

[0045] The sample preparation method comprises the following steps:

[0046] 1. The sample is burned in a high-temperature furnace, and the burning reduction (increase) is calculated;

[0047] 2. Use 7.0g of the substrate as a mixed flux of lithium tetraborate + lithium carbonate (80%+20% by mass), accurately weigh 0.700g of the sample and place it in a platinum crucible, add 3.0g of ammonium nitrate and mix well, and On the surface of the sample after mixing, 3.5g of lithium tetraborate+lithium carbonate mixed flux is uniformly covered;

[0048] 3. Add 5 drops of ammonium iodide (mass percent concentration: 10%) as a release agent, carry out low-temperature pre-oxidation in a high-temperature furnace for 15 minutes, ...

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Abstract

The invention relates to a metallurgy miscellaneous material spectral analysis method. With an existing metallurgy miscellaneous material fluorescent spectral analysis method, one working curve is only aimed at one material. With the method provided by the invention, the technical problem is solved. The invention provides a technical scheme that according to the metallurgy miscellaneous material fast spectral analysis method, a sample preparation method comprises the steps that a, a sample is subjected to a burning treatment in a high-temperature furnace, and burning reduction and increment are calculated; b, sample treatment is carried out; c, ammonium iodide is added as a de-molding agent, and a standard glass sheet is prepared. Working curve drawing comprises the steps that a, with a sample preparation method, a pure substance or a standard substance is prepared into a standard sample sheet of element to be tested; b, 2 pure mixed flux blank sheets are prepared with the sample preparation method; c, the sample weight of major elements is reduced, such that standard sheets with different contents can be obtained; d, the prepared standard substance sheet is subjected to fluorescent scanning; regression and counting are carried out with density as abscissa and fluorescence intensity as ordinate, such that regression curves of the elements can be obtained; e, similarly, the blank sheet is subjected to spectral scanning, and is deducted as a standard blank; f, unknown sample test is carried out; g, the unknown sample burning reduction and increment are introduced into calculation, and a total amount is normalized.

Description

technical field [0001] The invention relates to a spectral analysis method, in particular to a spectral analysis method for metallurgical miscellaneous materials. Background technique [0002] Due to the influence of matrix, particle size and other effects that are difficult to overcome in spectral analysis, it is difficult to control the high precision of quantitative analysis, and it has become a relative analysis method. In the early days, due to the limitations of the equipment itself, experts and scholars at home and abroad adopted a one-to-one method, that is, a working curve to analyze one type of sample, in order to reduce interference and improve analysis accuracy and precision; It is often difficult to perform high-precision quantitative analysis for some non-standard substances. [0003] With the diversification of material varieties, the original one-to-one model is no longer applicable in some fields. Up to now, the analysis of unconventional metallurgical mate...

Claims

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Application Information

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IPC IPC(8): G01N23/223G01N1/28G01N1/44G01N1/38
Inventor 徐永宏
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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