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Analytical Support for the T 000 Tellurium Preparation Process

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Inorganic Materials Aims and scope

Abstract—

In this paper, we report the development of a unified inductively coupled plasma atomic emission spectrometry technique that allows one to assess the purity of T 000 metallic tellurium. The process comprises two sequential steps: hydrometallurgical processing of electric filter dust concentrate, based on a classic hydrometallurgical scheme of processing anode slime from copper production, and electrolytic tellurium extraction followed by reducing–refining melting for the preparation of metallic tellurium. For high-speed analytical monitoring of the preparation of T 000 tellurium, we have developed an atomic emission spectrometry technique; chosen analytical lines, the inductively coupled plasma power, and an optimal-compromise matrix component concentration; and evaluated the adequacy of the proposed technique. No high-speed versatile techniques for chemical analysis of metallic tellurium, intermediate products differing in purity, or raw materials have been previously reported in the literature. The proposed technique allows one to determine up to 61 analytes with limits of detection (LODs) in the range from n × 10–7 to n × 10–4 wt % and intralaboratory precision better than 25%. Information about analyte concentrations obtained using the proposed technique allows one to optimize technologically important process parameters, draw conclusions regarding the quality of raw materials, and infer whether the final product—metallic tellurium—corresponds to grade T 000. The data we present on the chemical composition of the final product, intermediate products, and raw materials clearly demonstrate effectiveness of each step in the proposed scheme for the preparation of pure tellurium.

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ACKNOWLEDGMENTS

We are grateful to V.V. Yatsunov, managing director of LLC SibKhimTekhnologii.

Funding

This work was supported by the Russian Federation Ministry of Science and Higher Education (state research target for the Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, in the field of basic research, project no. 121031700315-2).

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Authors and Affiliations

  1. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

    O. V. Lundovskaya & A. R. Tsygankova

  2. Novosibirsk National State Research University, 630090, Novosibirsk, Russia

    A. R. Tsygankova & N. A. Orlov

  3. LLC SibKhimTekhnologii, 633004, Berdsk, Russia

    F. V. Yatsunov

Authors
  1. O. V. Lundovskaya
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  2. A. R. Tsygankova
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  3. N. A. Orlov
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  4. F. V. Yatsunov
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Correspondence to A. R. Tsygankova.

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Lundovskaya, O.V., Tsygankova, A.R., Orlov, N.A. et al. Analytical Support for the T 000 Tellurium Preparation Process. Inorg Mater 58, 990–998 (2022). https://doi.org/10.1134/S0020168522090102

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  • DOI: https://doi.org/10.1134/S0020168522090102

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