2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 5: Starkey Intl. Symp. / Mineral Processing
| Editors: | Kongoli F, Kumar P, Senchenko A, Klein B, Silva A.C., Sun C, Mingan W |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2016 |
| Pages: | 270 pages |
| ISBN: | 978-1-987820-44-7 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Ecological Importance of New Water-Vapor Processing of Metal Sulfide Concentrates
Gagik Karamyan1; Kliment Hakobyan1; Armen Hakobyan1;1INSTITUTE OF CHEMICAL PHYSICS OF NAS OF ARMENIA, Yerevan, Armenia;
Type of Paper: Regular
Id Paper: 319
Topic: 5
Abstract:
Standard pyrometallurgical technologies of processing sulfide containing concentrates are accompanied by emission into the atmosphere the polluting tellurium, selenium and SiO2 gas. Catching of this gas and conversion into sulfuric acid is difficult and expensive problem because this requires PMG catalysts. Besides, sufficient part of rhenium is sublimated and lost. The paper describes the water-vapor processing of sulfide concentrates, particularly MoS2 in large scale plant (2.5 tons daily). Also, the features of conversion of SiO2 into Na2S and elemental sulfur are presented. The technology provides a high level of extraction of molybdenum (98.5%), rhenium (94%) and sulfur (98.4%) so it is efficient and environmentally friendly.
Keywords:
Efficiency; Extraction; Metals; Mineral; Ore; Processing; Technology; Waste;References:
[1] E. Blanco, H.Y. Sohn, G. Han, and K.Y. Hakobyan, Oxidation of molybdenite by water vapor, Proceedings of the Sohn International Symposium, TMS 2006, Warrendale, Pennsylvania, (U.S.A), vol. 1, pp.167-172.[2] K.Y. Hakobyan, H.Y. Sohn, Tarasov A.V., P.A. Kovgan, A.K. Hakobyan, V.A Bryukvin, V.G. Leontiev and O.I. Tsybine, New technology for the treatment of molybdenum sulfide concentrates, Proceedings of the Sohn International Symposium, TMS 2006,Warrendale, Pennsylvania,(U.S.A), vol. 4, pp. 203-216.
[3] K.Y. Hakobyan, H.Y. Sohn, A.K. Hakobyan, V.A Bryukvin, V.G. Leontiev and. O. I. Tsibin: The oxidation of molybdenium sulfide concentrate with water vapor: Part 1. Thermodynamic Aspects, Mineral Processing and Extractive Metallurgy (TIMM C), 116 (2007) 3, 152-154.
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[7] K.E. Hakobyan, A.K. Hakobyan, A.A. Melkomyan, G.G. Karamyan, The Ways of Complex Processing of Pyrite Concentrates, Proceedings of MMM2013 International Symposium, August 25-28, 2013, San Diego, California, USA, pp. 321-324.
[8] V.A Bryukvin, O.I. Tsybine, K.E Hakobyan, A.K Hakobyan, G.G. Karamyan, A.A. Melkomyan, New Technology of Environmentally Sound Processing of Copper Sulphide Concentrate): Proceedings of Shechtman International Symposium, Cancun, Mexico, 29 June-04 July, 2014, Volume 2: MINERAL PROCESSING, pp. 401-406.
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