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X-ray spectral determination of gold in geological samples after its concentration by low-temperature fire assay

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Abstract

The technology of gold extraction to lead from its mixture with the sample powder during lowtemperature alkaline fusion is developed. The optimal ratios of masses for the sample, lead, and alkali, as well as heating conditions, temperature, and fusion duration, are determined for satisfactory gold recovery. A low temperature of fusion makes it possible to lighten the structure of furnaces, to decrease energy consumption, and to shorten the duration of the entire cycle from the beginning of fusion until the next set of crucibles is loaded. Using the modular approach, a furnace can be assembled in a small area for the simultaneous fusion of a great number of samples. The results of determining gold by the X-ray fluorescence method obtained by using the proposed concentration technology satisfy the regulatory requirements with respect to accuracy.

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References

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Authors and Affiliations

  1. Fedorovsky All-Russian Scientific-Research Institute of Mineral Resources, Moscow, Russia

    V. A. Simakov & V. E. Isaev

Authors
  1. V. A. Simakov
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  2. V. E. Isaev
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Correspondence to V. A. Simakov.

Additional information

Original Russian Text © V.A. Simakov, V.E. Isaev, 2015, published in Zavodskaya Laboratoriya, Diagnostika Materialov, 2015, Vol. 81, No. 10, pp. 11–14.

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Simakov, V.A., Isaev, V.E. X-ray spectral determination of gold in geological samples after its concentration by low-temperature fire assay. Inorg Mater 52, 1440–1443 (2016). https://doi.org/10.1134/S0020168516140132

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  • DOI: https://doi.org/10.1134/S0020168516140132

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