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Method for analyzing trace phosphorus in ferromanganese

A ferromanganese and trace technology, applied in the field of chemical analysis test, can solve the problems of high consumption of reagents, cumbersome operation, slow analysis speed, etc., achieve the effect of reducing the amount of reagents, reducing the degree of pollution, and solving the cumbersome operation

Inactive Publication Date: 2010-12-29
TANGSHAN JIANLONG IND CO LTD
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Problems solved by technology

Therefore, the determination of phosphorus content in ferromanganese has strong practical significance. Traditional chemical analysis methods, such as alkali titration and several colorimetric methods, are cumbersome to operate, slow in analysis speed, consume a lot of reagents, and are relatively harmful to environmental pollution. Serious, poor precision, difficult to meet the actual needs of production

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Embodiment Construction

[0016] The present invention will be further described below through embodiment.

[0017] In an embodiment, a method for analyzing trace amounts of phosphorus in ferromanganese comprises the following steps: use a standard sample close to the analysis sample matrix to make a working curve, and after the sample dissolution is completed, directly use an inductively coupled plasma atomic emission spectrometer analyze. Ferromanganese samples were dissolved with hydrochloric acid, nitric acid and perchloric acid, and then directly analyzed by inductively coupled plasma atomic emission spectrometer.

[0018] The specific operation process of this embodiment:

[0019] ⑴ Drawing of working curve

[0020] Weigh 0.5g (accurate to 0.000 1 g) of ferromanganese standard sample (as shown in Table 1) with a certain gradient in phosphorus content, cover it with a watch glass in a 250mL beaker, add 20mL of nitric acid and 5mL of hydrochloric acid on a temperature-controlled electric heating ...

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Abstract

The invention relates to a method for analyzing trace phosphorus in ferromanganese, in particular to a method for quickly measuring phosphorus content in steelmaking raw material ferromanganese, which belongs to the technical field of chemical analysis test. The technical scheme comprises the following steps: taking a standard sample closing to an analysis sample as a working curve; after the sample is completely dissolved, analyzing by directly using an inductively coupled plasma atomic emission spectrometer; and dissolving the ferromanganese sample by using hydrochloric acid, nitric acid and perchloric acid. The invention has the beneficial effects of effectively solving the problems of complicated operation and slow analysis, reducing the reagent amount, reducing the environmental pollution and improving the analysis accuracy due to the adoption of high-precision analysis instrument. As the standard sample closing to the analysis sample is taken as the working curve, the influence caused by a matrix effect is eliminated. The result indicates that the error and precision completely conform to the technical requirements of the state standard. The result of analyzing a standard substance by using the invention is consistent with the determined value, and the invention can be used for measuring the trace phosphorus in high, middle and low-carbon ferromanganese.

Description

[0001] Technical field: [0002] The invention relates to a method for analyzing trace amounts of phosphorus in ferromanganese, in particular to a method for quickly measuring the amount of phosphorus in ferromanganese, a raw material for steelmaking, and belongs to the technical field of chemical analysis tests. Background technique: [0003] Ferromanganese is one of the main raw materials for steelmaking, including carbon ferromanganese, medium carbon ferromanganese, low carbon ferromanganese, blast furnace ferromanganese, phosphorus is a harmful element in steel, we should analyze the role of phosphorus from another angle, it The solid solution strengthening of phosphorus and phosphorus have a certain influence on the plasticity and toughness of steel, so the analysis accuracy and analysis speed of phosphorus are particularly important. Therefore, the determination of phosphorus content in ferromanganese has strong practical significance. Traditional chemical analysis met...

Claims

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Application Information

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IPC IPC(8): G01N21/25
Inventor 朱海丰张向东王占祥王素环崔宏利
Owner TANGSHAN JIANLONG IND CO LTD
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