Method for efficiently extracting molybdenum and rhenium from rhenium-containing low-grade molybdenum concentrate

The invention discloses a method for efficiently extracting molybdenum and rhenium from rhenium-containing low-grade molybdenum concentrate. According to the method, the molybdenum concentrate is manufactured into a pellet with the molybdenum concentrate as a core and a molybdenum concentrate and qu...

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Hauptverfasser:	TANG YANBIN, CHEN XULING, ZHANG YUANBO, GAN MIN, QIU GUANZHOU, ZENG XIANGLONG, WANG YONG, WANG SONGRONG, FAN XIAOHUI, HUANG ZHUCHENG, DENG QIONG, WANG GUOJING, YUAN LISHUN, LYU ZHONGAN, JIANG TAO, LI GUANGHUI, CHENG ZHIHUA, LI WEI, YANG YONGBIN, GUO YUFENG, GAN HONGCAI, LIU CHAOHUI, ZHANG LIN, LI QIAN
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention discloses a method for efficiently extracting molybdenum and rhenium from rhenium-containing low-grade molybdenum concentrate. According to the method, the molybdenum concentrate is manufactured into a pellet with the molybdenum concentrate as a core and a molybdenum concentrate and quick lime mixing layer as a shell layer, the pellet is roasted in a gas-solid convection heat transfer manner, and oxidizing roasting is carried out on the core of the pellet; lime-base process roasting is carried out on the shell layer, and molybdenite and ReS2 are oxidized; and molybdenum, rhenium and sulfur can be all reserved in roasted ore, and efficient recycling of molybdenum and rhenium is achieved by further adopting the ammonia leaching technology and the acid leaching technology. According to the method, the sulfur fixation rate can reach more than 96%, and environment pollution of SO2 can be avoided. On the basis of reduction of consumption of quick lime, the molybdenum recovery rate can reach more than 92%, and the rhenium recovery rate reaches more than 85%.