Method for measuring microelement in sodium aluminate solution

A technology of medium and trace elements and sodium aluminate, applied in the direction of material excitation analysis, thermal excitation analysis, etc., can solve the problems of cumbersome operation, long analysis period, high salt in industrial sodium aluminate solution, etc., to achieve reliable analysis data and improve analysis speed effect
CN101710075AInactive Publication Date: 2010-05-19GUIZHOU BRANCH CHINA ALUMINUM IND
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
GUIZHOU BRANCH CHINA ALUMINUM IND
Publication Date
2010-05-19
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a method for measuring microelement in sodium aluminate solution, relating to a continuous fast analysis method for measuring the microelement in the sodium aluminate solution when producing aluminum oxide. The method is characterized in that an inductively coupled plasma atomic emission spectrometer is used for measuring the content of the element in the sodium aluminate solution when measuring. The method comprises the steps of: leading industrial sodium aluminate solution and acid to have neutralization reaction according the characteristic of the industrial sodium aluminate solution; diluting and confirming volume according to the different concentrations of the solution to prepare sample solution which is suitable for the requirement of measurement; selecting a best analysis spectral line; fast measuring the content of the 24 microelements in the sodium aluminate solution with the inductively coupled plasma atomic emission spectrometer; and computing to obtain exact analysis data. The method improves the analysis speed for measuring the microelements in the sodium aluminate solution, and provides immediate, exact and reliable analysis data for the production of the aluminum oxide and the improvement of the technology.
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Description

technical field

[0001] A method for determining trace elements in sodium aluminate solution relates to a continuous and rapid analysis method for various trace elements in sodium aluminate solution in the alumina production process. Background technique

[0002] The essence of the production of alumina by alkaline method is to react the alumina in bauxite with alkali to make sodium aluminate solution, then decompose sodium aluminate to obtain aluminum hydroxide, and obtain alumina product through roasting. The whole production has a direct relationship with the sodium aluminate solution. Therefore, an in-depth understanding of the chemical properties of the sodium aluminate solution is helpful for controlling changes in the production process, understanding the enrichment and loss of various trace elements in different links, and improving the production process. And operating conditions, improving technical and economic indicators and economic effects, and extracting valuab...

Claims

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