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The Carbon and Oxygen Isotopic Compositions:Implications for the Sources and Types of Uranium Deposits in South ChinaLUO Jin-cheng1,2(1.State Key Laboratory of Ore Deposit Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences Guiyang,Guizhou 550002,China;2.Graduate school,Chinese Academy of Sciences,Beijing 100049,China)摘 要:<正>Uranium......
+SRB systems 2.4 Column reactor experiments Two polyvinyl chloride (PVC) columns (64 mm in inner diameter and 1 180 mm in length) were packed with roll-front infiltration sandstone-type uranium ore.../L H2SO4 was dropped from the column top at a speed of 50-60 drop/min. The dropping process stopped when the U(Ⅵ) level was lower than 0.5 mg/L. The leaching residue of uranium ore in the columns......
High-temperature creep properties of uranium dioxide pellet GAO Jia-cheng(高家诚), WANG Liang-fen(王良芬), WANG Yong(王 勇), WU Shu-fang(吴曙芳) College of Materials Science and Engineering, Chongqing...; Abstract: High-temperature creep properties of sintered uranium dioxide pellets with two grain sizes (9.0 μm and 23.8 μm) were studied......
): 4393-4400. [7] RAO K A, SREENIVAS T, VINJAMUR M, SURI A K. Continuous leaching of uranium from an Indian ore: Residence time scale up and heat effects[J]. Hydrometallurgy, 2014, 146: 119-127. [8... ore[J]. Journal of Hazardous Materials, 2014, 275: 136-145. [11] SANTOS E A, LADEIRA A C Q. Recovery of uranium from mine waste by leaching with carbonate-based reagents[J]. Environmental Science......
2016; accepted 7 November 2016 Abstract: This research aimed to enhance the column bioleaching recovery of uranium ore by Acidithiobacillus ferrooxidans. Seven factors were examined... models was 92.01%. This value was in agreement with the actual experimental value. The analysis of bioleaching residue of uranium ore under optimum conditions confirmed the formation of K-jarosite......
ore, tailings and waste ore for metals, such as uranium, copper, gold and silver. The ore granular media used for heap leaching are the porous media packed by ore particles with different sizes... Evolvement of permeability of ore granular media during heap leaching based on image analysis YANG Bao-hua(杨保华)1, 2, WU Ai-xiang(吴爱祥)3, JIANG Huai-chun(江怀春)4, CHEN Xue-song(陈学松)1 1. School......
of uranium ore with different fractal dimensions of particle size distribution YE Yong-jun, DING De-xin, LI Guang-yue, FU Hai-ying, SONG Jian-bin, HU Nan (Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China) Abstract: Uranium ore heap for heap leaching is a kind of loose media which is heaped by broken......
and economical method for treating poor ore, tailings and waste ore containing valuable metals, such as uranium, copper, gold and silver. The efficiency of heap leaching depends on two aspects: one...; Pore structure of ore granular media by computerized tomography image processing WU Ai-xiang(吴爱祥)1, YANG Bao-hua(杨保华)2, XI Yong(习 泳)2, JIANG Huai-chun(江怀春)2......
; 文章编号:1672-7207(2014)06-1766-06 Regularities for uranium leaching rate at different heights of column for leaching uranium from uranium ore FU Haiying, DING Dexin, YE..., which ensures that the leaching of single ore particle corresponds to shrinking core model and diffusion control system, and the reaction of all uranium ore particles is uniform in a small column......
. It has been successfully applied in the recovery of gold, copper, nickel and uranium, in Zijinshan copper ore and Newmont gold ore, etc [1-4]. Under the great pressure of low grade and environmental...)60002-9. [6] JALALI F, FAKHARI J, ZOLFAGHARI A. Response surface modeling for lab-scale column bioleaching of low-grade uranium ore using a new isolated strain of Acidithiobacillus Ferridurans [J......
