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Metallurgist
Erschienen in: Metallurgist 11-12/2018

13.04.2018

Melting of Gold-Containing Concentrates with Copper Production Lead Slags

Erschienen in: Metallurgist | Ausgabe 11-12/2018

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Abstract

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%.
Vorheriger Artikel Investigation and Computer Design of the Technological Modes of Continuous Rolling of Thin Brass Strips with Specified Accuracy
Nächster Artikel Development of a New Horizontal Continuous Casting Machine Construction for Nonferrous and Precious Metal Billets

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Metadaten
Titel
Melting of Gold-Containing Concentrates with Copper Production Lead Slags
Publikationsdatum
13.04.2018
Erschienen in
Metallurgist / Ausgabe 11-12/2018
Print ISSN: 0026-0894
Elektronische ISSN: 1573-8892
DOI
https://doi.org/10.1007/s11015-018-0599-9

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