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Method for measuring metal aluminum and alumina in AD15 deoxidizing agent

A technology of aluminum oxide and determination method, which is applied in the direction of material analysis by observing the influence of chemical indicators, using chemical indicators for analysis, and analyzing by chemical reaction of materials, etc., can solve the problem of aluminum oxide and aluminum oxide. There is no public method for the analysis of metal aluminum composition, which achieves the effect of high accuracy, favorable for popularization and application, and simple and fast method.

Inactive Publication Date: 2009-01-21
WUHAN IRON & STEEL (GROUP) CORP
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Problems solved by technology

[0003] For now AD 15 There is no disclosed method for the analysis of aluminum oxide and metal aluminum in the deoxidizer. The present invention provides a simple and fast method for determining AD 15 Method for the content of aluminum oxide and metal aluminum in the deoxidizer

Method used

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  • Method for measuring metal aluminum and alumina in AD15 deoxidizing agent
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  • Method for measuring metal aluminum and alumina in AD15 deoxidizing agent

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Embodiment Construction

[0010] Preferred embodiments of the present invention are described in detail below.

[0011] a. Determine the choice of acidity and dosage in the analysis of metal aluminum:

[0012] Weigh 0.2000g clay standard sample (GBW03115, produced by National Building Materials Center, Al 2 o 3 28.57%), add 40.0mg of aluminum metal, change the addition of hydrochloric acid (5mol / L), and others are carried out by the following A process, and the measured results are shown in Table 1.

[0013] Table 1: Determination results of different acidity

[0014] Hydrochloric acid dosage (ml)

30

35

40

45

50

55

60

Measured value (W%)

16.69

18.68

19.15

19.48

20.00

22.52

21.27

[0015] Table 1 shows that in 50ml of 5mol / L hydrochloric acid solution, metal aluminum can be fully dissolved, and aluminum oxide is insoluble; if the acidity is too high, aluminum oxide can dissolve a small amount, ...

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Abstract

The invention relates to a method for measuring alumind and metal aluminum in AD15 deoxidizing agent, which relates to a method for chemically analyzing materials. The invention provides a method for measuring alumind and metal aluminum in AD15 deoxidizing agent aiming at the problem that composition analysis of metal aluminum in the existing AD15 deoxidizing agent is not disclosed. The method comprises placing AD15 deoxidizing agent in boiling water bath to decompose samples in hydrochloric acid medium, and then filtering and separating, adding quantitative and excess EDTA standard solution in buffer solution, back titrating zinc acetate, and getting the content of metal aluminum, using a melting method to measure to get total aluminum, the difference is alumind. No analytical method can directly measure the content of metal aluminum when alumind exists, and the method excellently solves the problem. The invention has the advantages of simple and fast method, high accuracy and excellent repeatability, which is beneficial for popularization and application.

Description

technical field [0001] The invention relates to a method for chemical analysis of materials. Background technique [0002] AD 15 Deoxidizer, because of its good deoxidation performance, is widely used by major domestic steel mills. However, there is no public method for the component analysis of aluminum oxide and metal aluminum therein. Aluminum oxide is not easy to decompose, but it can also be partially decomposed under strong acid and high temperature, while metallic aluminum is active and easily dissolved in hydrochloric acid. Contents of the invention [0003] For now AD 15 There is no disclosed method for the analysis of aluminum oxide and metal aluminum in the deoxidizer. The present invention provides a simple and fast method for determining AD 15 The method for the content of aluminum oxide and metal aluminum in the deoxidizer. [0004] Said purpose is achieved by the following scheme: [0005] AD 15 The determination method of aluminum oxide and metallic ...

Claims

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Application Information

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IPC IPC(8): G01N21/79G01N31/22
Inventor 夏彩文
Owner WUHAN IRON & STEEL (GROUP) CORP
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