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Preparation method of ferroalloy calibration samples for X-ray fluorescence spectrum analysis

A calibration sample and fluorescence spectrum technology, which is applied in the field of preparation of ferroalloy calibration samples, can solve problems such as application limitations, achieve accurate and reliable results, and expand the application range

Inactive Publication Date: 2012-12-12
HBIS COMPANY LIMITED HANDAN BRANCH COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the application of ferroalloys with no or only a few standard samples is limited

Method used

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  • Preparation method of ferroalloy calibration samples for X-ray fluorescence spectrum analysis
  • Preparation method of ferroalloy calibration samples for X-ray fluorescence spectrum analysis
  • Preparation method of ferroalloy calibration samples for X-ray fluorescence spectrum analysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: the preparation of Al-Mn-Ca-Fe alloy calibration sample

[0018] Al-Mn-Ca-Fe alloy is used more and more widely as a new type of deoxidizing and alloying reagent for steelmaking. Among them, aluminum, manganese, calcium and iron are the four main constituent elements, and they are also the elements that must be checked for the settlement of incoming materials. However, there are currently no product standards and testing standards for aluminum-manganese-calcium-iron alloys, let alone relevant reference materials, which limits the application of X-ray fluorescence spectroscopy that relies heavily on reference materials. In this embodiment, it is only necessary to adjust the main elements in the compounded calibration sample to be aluminum, manganese, calcium and iron, and then it can be used as the calibration sample of Al-Mn-Ca-Fe alloy for X-ray fluorescence spectroscopic analysis.

[0019] The specific method adopted is: the reference pure aluminum, pure...

Embodiment 2

[0027] Embodiment 2: the preparation of Al-Mg-Ca-Fe alloy calibration sample

[0028] Al-Mg-Ca-Fe alloy is an excellent deoxidizer for steelmaking. It is generally used as a substitute for aluminum. It has the characteristics of low price and high yield. It has been more and more widely used in recent years. Because it is a new type of ferroalloy, there is no relevant standard sample at present, which limits the application of instrumental analysis methods that rely heavily on standard samples.

[0029] In this example, a certain iron ore and a certain bauxite are selected for compounding, which solves the problem that the non-standard sample of Al-Mg-Ca-Fe alloy cannot be analyzed by X-ray fluorescence spectrometry. Since iron ore and bauxite are in the form of oxides, the weight of the element is converted into the weighed mass (in this example, the weighed mass is 0.2000g) when weighing, as shown in Table 2. Iron ore and bauxite are converted into element content, weighed ...

Embodiment 3

[0037] Embodiment 3: the preparation of phosphorus ferroalloy calibration sample

[0038] Ferrophosphorus is a conventional iron alloy, but there are only two kinds of standard samples of ferrophosphorus on the market, which cannot meet the requirements of establishing a calibration curve for X-ray fluorescence spectroscopy. In this example, a series of calibration samples for X-ray fluorescence spectroscopic analysis were compounded with high-purity iron with a certain particle size, standard potassium dihydrogen phosphate and ferrophosphorus standard samples. Since the substance form in potassium dihydrogen phosphate is an oxide form, it is converted into the element mass and converted into the weighed mass (in this example, the weighed mass is 0.2000g) when weighing, as shown in Table 3. High-purity iron, benchmark potassium dihydrogen phosphate and ferrophosphorus standard samples are converted into element content, weighed into a platinum yellow crucible with a lithium te...

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Abstract

The invention discloses a preparation method of ferroalloy calibration samples for X-ray fluorescence spectrum analysis. The preparation method is characterized in that firstly, high-pure metal and / or standard reagents are weighed according to the alloy proportioning, then, the high-pure metal and / or standard reagents are dissolved into solution by solvents, next, the solution is quantificationally transferred into a platinum yellow crucible and is melted after being mixed with lithium borate, oxidants and release agents, the cooling is carried out, and a ferroalloy calibration sample glass fuse piece is obtained. The method has the advantages that the ferroalloy calibration samples to be measured are compounded by reference or standard substances with similar element composition and content range, and the problem of no ferroalloy standard sample to be measured or standard sample insufficiency is solved. The ferroalloy calibration sample glass fuse piece obtained by the method is used for the X-ray fluorescence spectrum analysis, the result is accurate and reliable, and the application range of an X-ray fluorescence spectrum analysis method is expanded.

Description

technical field [0001] The invention relates to a method for preparing a calibrating sample for analysis, in particular to a method for preparing an iron alloy calibrating sample for X-ray fluorescence spectroscopic analysis. Background technique [0002] In modern instrumental analysis methods, especially X-ray fluorescence spectrometry, the establishment of analytical methods depends on a large number of standard substances. As one of the important auxiliary materials in the ferrous metallurgy industry, ferroalloy is generally used for deoxidation and alloying in steelmaking. According to the variety, it is generally divided into two categories. One is conventional ferroalloys, such as ferrosilicon, ferromanganese, silicomanganese, ferrotitanium, ferrovanadium, etc., which have a long history of use and generally have a large number of standard samples; Small-species ferroalloys, such as Al-Mn-Ca-Fe, Al-Mg-Ca-Fe, P-Fe, Si-Ca, etc., are generally newly developed or small-s...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N23/223
Inventor 王彬果李兰群赵靖徐静商英白淑霞张建中闫文喜李帆马永昌
Owner HBIS COMPANY LIMITED HANDAN BRANCH COMPANY
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