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Method for measuring total iron content in iron concentrate powder in iron and steel enterprises

A technology for iron powder and iron content, which is used in measuring devices, instruments, scientific instruments, etc., can solve problems such as point dispersion and poor calibration curve effect, and achieve the effects of satisfying accuracy, reducing smelting costs, and reducing safety risks.

Pending Publication Date: 2022-02-11
XINJIANG BAYI IRON & STEEL
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for iron and steel enterprises to measure the total iron content in fine iron powder, which can solve the problem that the sample calibration curve produced is poor and the points are scattered during the actual measurement process of total iron in fine iron powder. Improve the accuracy of X-ray fluorescence spectrometry analysis results, and realize the rapid and accurate determination of total iron content in iron concentrate powder

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  • Method for measuring total iron content in iron concentrate powder in iron and steel enterprises
  • Method for measuring total iron content in iron concentrate powder in iron and steel enterprises
  • Method for measuring total iron content in iron concentrate powder in iron and steel enterprises

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Embodiment Construction

[0008] A method for iron and steel enterprises to measure total iron content in fine iron powder,

[0009] 1. Selection experiment of internal standard elements: the present invention uses data such as the intensity of the internal standard of the sample and the ratio of the analysis line or the intensity ratio of the coherent scattering line between the analysis line and the target line in the selection of the internal standard elements to calculate the element concentration, function In order to obtain the effect of compensating the effect of absorption enhancement and instrument drift. The principle is as follows: a certain amount of known substance S (internal standard substance Co 2 o 3 ), measure the diffraction intensity of the known substance and the measured phase J phase (the content of total iron in the iron concentrate powder), and plot the intensity ratio to obtain the change value of the average mass absorption coefficient of the sample. Add y gram internal sta...

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Abstract

The invention discloses a method for measuring the total iron content in fine iron powder in iron and steel enterprises. The method comprises the following steps: selecting cobalt sesquioxide as an internal standard substance, weighing 0.6000 + / -0.0002 g of fine iron powder sample, 6.0000 + / -0.0002 g of anhydrous lithium tetraborate and lithium metaborate mixed flux with the mass percentage of 67: 33, 0.03 g of ammonium iodide and 1.0000 + / -0.0002 g of Co2O3, putting into a platinum-platinum crucible, then putting the platinum-platinum crucible into a sample melting machine with the temperature of 1050 DEG C, and pre-standing for 120 seconds, swinging for 900s; and post-standing for 30 seconds, and taking out the sample sheet after melting. According to the method, the problems that in the actual determination process of the total iron in the fine iron powder, the effect of a manufactured sample calibration curve is poor, and points are relatively dispersed can be solved, the accuracy of an analysis result of the X-ray fluorescence spectrometry is improved, and the rapid and accurate determination of the total iron content in the fine iron powder is realized.

Description

technical field [0001] The invention relates to a method for iron and steel enterprises to measure the total iron content in fine iron powder. Background technique [0002] Iron concentrate powder is a powder with high iron content selected from iron ore through crushing, grinding, magnetic separation, flotation, gravity separation and other procedures. It is one of the main raw materials for blast furnace ironmaking. The total iron content of iron concentrate powder is average. Between 50% and 70%, the determination process is easily affected by the matrix effect. In order to improve the analysis accuracy of TFe, the high temperature melting method is used and Co 2 o 3 As an internal standard element, the influence of the matrix effect is reduced to realize the determination of the total iron content in iron concentrate powder by X-ray fluorescence spectrometry. [0003] There are main problems in the conventional analysis method at present: 1. Manual chemical method uses...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/223
CPCG01N23/223G01N2223/076G01N2223/1016
Inventor 吴琨雷洪郭庆华
Owner XINJIANG BAYI IRON & STEEL
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