2014•Mining and MetallurgyRequires access

EXPERIMENTAL STUDY ON PROCESSING OF A COMPLEX LOW GRADE SCHEELITE ORE FROM TIBET

YE Yue-hu

Abstract

This polymetallic ore cintains a variety of mineral species,in which the main metal minerals are chalcopyrite,molybdenite,pyrite and scheelite. The WO3 grade of the raw ore is 0. 19%,the ore is classified as a low grade tungsten ore. Based on the result of process mineralogy study,bench-scale processing test has been carried out in laboratory for the ore. By using the flowsheet of scheelite roughing flotation from sulfide floatation tailings-high-temperature cleaning flotation of scheelite rough concentrate—acid leaching of scheelite concentrate,the results of a laboratory locked-cycle test are: the tungsten concentrate assaying 62. 58% WO3,the recovery of WO3 being 70. 73%.

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Key concepts: Scheelite, Molybdenite, Tailings, Chalcopyrite, Pyrite, Metallurgy, Mineral processing, Leaching (pedology)