Metallurgist

, Volume 61, Issue 11–12, pp 1001–1008 | Cite as

Melting of Gold-Containing Concentrates with Copper Production Lead Slags

  • E. A. Mazulevskii
  • T. V. Kovzalenko
  • B. Seitkhanov
  • O. P. Dobryakova
Article
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Results are presented for a study of the pyrometallurgical treatment of gold-arsenic concentrates with lead osmium-rhenium-containing slags. Conditions are found for preparing alloy ingots consisting of lead, or predominantly of lead sulfide, or both phases. It is shown that with gravitation deposition up to 65–68% osmium is concentrated in 17–25% matte. Gold is almost uniformly distributed over the height of ingots. For industrial application of the results obtained, it is recommended that molten products are poured into a mold heated to 500–550°C, and after natural cooling the lower 25% of alloy is separated for osmium extraction, and gold is extracted from the rest of the alloy by well-known technology. Reduction kinetics are studied for gold, osmium, rhenium, and arsenic. According to kinetic curves, recovery of rhenium in slag proceeds rapidly; osmium recovery ceases in 20–25 min; gold is concentrated in the alloy in 10 min. arsenic is transferred into a gas phase in 10 min, and its concentration in alloy comprises 0.2% on average, and in slags 0.27–0.63%.

Keywords

gold-arsenic concentrate lead osmium rhenium-containing slag melting 
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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • E. A. Mazulevskii
    • 1
  • T. V. Kovzalenko
    • 1
  • B. Seitkhanov
    • 1
  • O. P. Dobryakova
    • 1
  1. 1.National Center for Complex Processing of Mineral Raw Materials of Kazakhstan RepublicAlmatyKazakhstan

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