Recovery of rhenium from molybdenum and copper concentrates during the Looping Sulfide Oxidation process

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• 作者：Joseph D. Lessard ; ^{joe@orchardtec.com" class="auth_mail} ; Daniel G. Gribbin ; Leonid N. Shekhter
• 关键词：Rhenium ; Looping Sulfide Oxidation ; Rhenium disulfide ; Molybdenum ; Copper
• 刊名：International Journal of Refractory Metals and Hard Materials
• 出版年：May, 2014
• 年：2014
• 卷：44
• 期：Complete
• 页码：1-6
• 全文大小：717 K

文摘

Rhenium is recovered during pyrometallurgical processing of molybdenum sulfide and copper sulfide ores; the traditional technology involves removing rhenium(VII) oxide, Re₂O₇, from the sulfurous gas phase generated during multiple hearth roasting (in molybdenum processing) and smelting (in copper processing). A new technology platform called Looping Sulfide Oxidation (LSO) has been proposed to produce molybdenum and copper using alternative process chemistries. A detailed thermodynamic study of the reaction conditions used in LSO process indicates that rhenium recovery is possible at higher rates than currently realized in the industry. Conditions at which Re₂O₇ is reduced to rhenium metal by S₂ have been identified and key process conditions are outlined to maximize performance of the LSO scheme and rhenium recovery.