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Method for measuring content of silicon and phosphorus in ferromanganese iron by inductively coupled plasma spectrum emission instrument

A technology of plasma spectroscopy and inductive coupling is applied in the field of measuring silicon and phosphorus content in ferromanganese by plasma spectrometer.

Active Publication Date: 2013-06-26
INNER MONGOLIA BAOTOU STEEL UNION
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Problems solved by technology

[0003] At present, there are domestic chemical analysis methods for silicon and phosphorus in ferromanganese. The silicon is mostly determined by the gravimetric method in GB / T5686.2-2008, and the phosphorus is mostly determined by the alkaline titration method in GB / T5686.4-2008. The method consumes a lot of chemicals and the operation steps are cumbersome, especially for silicon, it takes 2-3 days to test a sample by gravimetric method

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  • Method for measuring content of silicon and phosphorus in ferromanganese iron by inductively coupled plasma spectrum emission instrument

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Embodiment Construction

[0021] The general thinking of the present invention is: ferromanganese sample is dissolved with salt-nitrate mixed acid, the residue after filtration is treated with sodium carbonate boric acid mixed flux and then extracted with hydrochloric acid, the two solutions are combined and diluted to a certain volume to obtain the atomized ferromanganese sample Solution: introduce the atomized solution into an inductively coupled plasma atomic emission spectrometer, measure the line intensity of the element to be measured, and calculate the concentration of the corresponding element of the substance to be measured according to the line intensity measured by the standard substance with known concentration.

[0022] In the present invention, the reagent used is preferably:

[0023] Hydrochloric acid: the density is 1.19g / ml;

[0024] Hydrochloric acid aqueous solution: hydrochloric acid: water volume ratio is 5:95;

[0025] Nitric acid aqueous solution: nitric acid: water volume ratio...

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Abstract

The invention discloses a method for measuring the content of silicon and phosphorus in ferromanganese iron by an inductively coupled plasma spectrum emission instrument. The method comprises the following steps of: preparing an atomized solution of a ferromanganese iron sample and standard solutions comprising a manganese standard solution, a phosphorus standard solution and a silicon standard solution; and introducing the atomized solution into an inductively coupled plasma atomic emission spectrometer, and measuring the spectral line intensity of an element to be measured, thus obtaining the content of silicon and phosphorus in the ferromanganese iron sample according to the spectral line intensity measured via the standard solutions with given concentrations. Due to the technical scheme disclosed by the invention, the content of silicon and phosphorus in ferromanganese iron can be rapidly and accurately measured.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgical analysis, in particular to a method for measuring the content of silicon and phosphorus in ferromanganese by an inductively coupled plasma spectrometer. Background technique [0002] Ferromanganese is one of the important alloy raw materials used in the converter smelting process. With the improvement of the quality requirements for smelting new steel types, the requirements for the control of the smelting process also increase accordingly. Therefore, the various raw materials used in the smelting process are no longer required. Satisfied with the inspection of principal components, it is increasingly important to quickly and accurately analyze the content of other related components in raw materials, so as to more accurately control smelting components. [0003] At present, there are domestic chemical analysis methods for silicon and phosphorus in ferromanganese. The silicon ...

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Application Information

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IPC IPC(8): G01N21/73G01N1/28
Inventor 王宴秋刘建华战丽君戴文杰乔宇赵布和段晓晨
Owner INNER MONGOLIA BAOTOU STEEL UNION
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