Arc atomic emission analysis of the feedstock for production of metallurgical alumina
https://doi.org/10.26896/1028-6861-2020-86-4-5-11
Abstract
The analytical capabilities of the arc atomic emission analysis for determination the impurities in kaolin clays, the feedstock for producing metallurgical alumina, were studied. The analytical lines of the elements that are most free of interferences are selected. The conditions of the analysis and parameters of the spectrometer are determined: current strength, exposure, interelectrode distance, types and parameters of electrodes, weight of the sample. The detection limits and limits of determination of the following elements are specified: Ca, Cr, Cu, Ga, Mg, Mn, Mo, Nb, Ni, Pb, Sc, Ti, V, Y, Zn, Zr, La. The limits of determination are n x 10–5 – n x 10–6 wt.%. A comparative analysis of the samples of kaolin clays previously analyzed by another method in the framework of inter-method comparative tests is carried out. It is shown that there are no significant discrepancies between the results obtained by both two methods.
About the Authors
E. S. Koshel
State Research and Design Institute of the Rare Metal Industry «Giredmet»
Russian Federation
Russian Federation
Elizaveta S. Koshel
5-1 B. Tolmachevsky per., Moscow, 119017
K. V. Petrova
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Russian Federation
Russian Federation
Kseniya V. Petrova
31 Leninsky prosp., Moscow, 119991
V. B. Baranovskaya
State Research and Design Institute of the Rare Metal Industry «Giredmet»; Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences; National University of Science and Technology «MISIS»
Russian Federation
Russian Federation
Vasilisa B. Baranovskaya
5-1 B. Tolmachevsky per., Moscow, 119017; 31 Leninsky prosp., Moscow, 119991; 4 Leninsky prosp., Moscow, 119991
Ya. V. Kuminova
National University of Science and Technology «MISIS»
Russian Federation
Russian Federation
Yaroslava V. Kuminova
4 Leninsky prosp., Moscow, 119991
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Review
For citations:
Koshel E.S., Petrova K.V., Baranovskaya V.B., Kuminova Ya.V. Arc atomic emission analysis of the feedstock for production of metallurgical alumina. Industrial laboratory. Diagnostics of materials. 2020;86(4):5-11. (In Russ.) https://doi.org/10.26896/1028-6861-2020-86-4-5-11
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