DUAN Wei1,2, TANG Wen-chun1, XIONG Guan1,2, HUANG Jian1,2, WANG Huan-guo1, MAO Yi-lin3, CHEN Xiao-qing3
（1. Geochemistry Exploration Brigade of Sichuan Bureau of Exploration and Development of Geology and Minerals Resources, Deyang 618000, China;
2. Sichuan Deep Resource Geological Exploration Co. Ltd., Deyang 618000, China;
3. Institute of Comprehensive Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, China.）
Abstract: In order to understand the washability of the newly discovered siliceous rock type rhenium polymetallic ore in the north of Sichuan, the recovery process of rhenium and associated sulfur, selenium, vanadium and molybdenum were studied. The test determined that the process of "gravity separation of sulfur － tailing oxidation roasting volatilization recovery of rhenium and selenium － alkali leaching recovery of vanadium and molybdenum" was used to effectively recover valuable elements rhenium and selenium, and comprehensively recover the associated pyrite and vanadium and molybdenum elements in the ore. With the use of gravity separation technology, high-quality sulfur concentrate products can be obtained with the productivity of 10.68% and the sulfur grade of 48.33%, and the recovery rate of sulfur was 62.72%. Sulfur-selective tailings were oxidized and roasted for 2 h at 950 ℃, the volatilization rate of selenium could be more than 99.96%, and the volatilization rate of rhenium could be 91.69%. With the use of alkali leaching process of calciner from sulfur-selective tailings, the leaching rate of vanadium slag was 88.09%, the leaching rate of liquid meter was 91.49%, the leaching rate of molybdenum slag meter was 92.13%, and the leaching rate of liquid meter was 92.52%.
Keywords: rhenium polymetallic ore; the washability; oxidizing roasting; alkali leaching; Re, Se, V, Mo
ACTA MINERALOGICA SINICA Vol.41, No.6, 2021, page 643-648
