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Method for measuring content of aluminum in manganese-iron alloy

A determination method, the technology of ferromanganese alloy, applied in the field of determination of aluminum content in ferromanganese alloy, can solve the problems of slow analysis speed, influence on the composition control of the smelting process, long analysis process, etc., and achieve good accuracy, wide measurement range and analysis precision high effect

Inactive Publication Date: 2015-09-30
INNER MONGOLIA BAOTOU STEEL UNION
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Problems solved by technology

[0003] In the past, the analysis of aluminum content in ferromanganese alloys has been carried out by strong alkali separation EDTA titration method or chrome azure S photometric method. The analysis process is long and the analysis speed is slow, which affects the composition control of the smelting process.

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  • Method for measuring content of aluminum in manganese-iron alloy
  • Method for measuring content of aluminum in manganese-iron alloy

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Embodiment Construction

[0014] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below in conjunction with the embodiments.

[0015] 1. Method summary

[0016] The sample was heated at low temperature with salt and nitric acid mixed acid until it was completely dissolved, then fixed to volume with water, and the amount of aluminum in the solution was determined by ICP-AES method.

[0017] 2. Prepare analytical reagents, standard solutions, and instruments.

[0018] 2.1 Salt and nitric acid mixed acid: 1+1+2 (volume ratio is hydrochloric acid: nitric acid: water = 1:1:2), the hydrochloric acid (ρ1.19) and nitric acid (ρ1.42) used are of superior grade.

[0019] 2.2 Aluminum standard solution: use 1mg / mL aluminum standard solution to dilute to 100μg / mL aluminum standard solution.

[0020] 2.3 Main instruments and test conditions

[0021] 2.3.1 The Optima5300DV two-way observation type full-spectrum direct-reading plasma spectrom...

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Abstract

The invention discloses a method for measuring the content of aluminum in manganese-iron alloy. With a manganese-iron sample without aluminum as contrast, aluminum standard solutions with different contents are added into the contract sample to prepare an aluminum working curve standard solution, the spectral intensities of the aluminum working curve standard solution and the manganese-iron sample are measured through a plasma atomic emitted spectrometer after the sample in dissolved in acid, and an analysis result is worked out through auto regression of a computer. The determination limit of the method is as low as 0.010%, and the method has a wide linear range, is high in analysis speed and accuracy and can meet requirements of scientific research and production.

Description

technical field [0001] The invention relates to the technical field of metallurgical analysis, in particular to a method for determining the aluminum content in ferromanganese alloys. Background technique [0002] Ferromanganese alloy is one of the important raw materials used in the converter smelting process. With the improvement of the quality requirements for smelting steel, the raw materials used in the smelting process are not only tested for the main components, but also require rapid and accurate testing of the content of other related components in the raw materials. , so as to achieve the purpose of more accurately controlling the smelting composition. [0003] In the past, the analysis of aluminum content in ferromanganese alloys has been using strong alkali separation EDTA titration method or chrome azure S photometric method. The analysis process is long and the analysis speed is slow, which affects the composition control of the smelting process. Contents of ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25G01N1/38
Inventor 薛玉兰刘钢耀刘建华
Owner INNER MONGOLIA BAOTOU STEEL UNION