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particle, positional relationships among adjacent ores, making solution flow trajectories, seepage velocity fields are not identical in the different location of ore heaps. Furthermore, the flow velocity... major types: large pore flow and inter-laminar flow, which are the important causes leading to the fluid uneven distribution. Key words: layered dumping; seepage; ores segregation; preferential flow; CT......
-molybdenum sulfide ores by reactor with membrane combined ion-exchange CHEN Jia-wu1, 2, XIAO Lian-sheng1, GAO Cong-jie1, ZHANG Gui-qing1 (1. School of Metallurgical Science and Engineering, Central South...-molybdenum sulfide ores with the Mo-resistant thermophilic bacterium sulfolobus metallics in a membrance biological reactor (MBR) with ion exchange was studied. The results show that the mass......
Manganese extraction from high-iron-content manganese oxide ores by selective reduction roasting-acid leaching process using black charcoal as reductantZHANG Yuan-bo(张元波), ZHAO Yi(赵熠), YOU Zhi-xiong(游志雄), DUAN Dao-xian(段道显), LI Guang-hui(李光辉), JIANG Tao(姜涛) (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China)Abstract:Reduction roasting-acid......
高压密封微波消解-氢化物发生原子荧光光谱法测定锰矿中砷和汞含量苏明跃1,杨丽飞2,郭芬2(1.天津市天津出入境检验检疫局 2.天津出入境检验检疫局,天津 300456)摘 要:使用硝酸,盐酸,氢氟酸体系在高压密封微波消解器中完全消解锰矿样品,采用顺序注射-氢化物发生原子荧光光谱法检测样品中砷,汞含量.讨论了微波消解酸体系及用量的选择,研究了硼氢化钾浓度,载气流量,屏蔽气流量,溶液酸介质,载流溶液,溶液酸碱比例,样品中的主要基体元素等因素对砷,汞检测的影响,并确立了适宜的检测条件.砷浓度在0~100μg/L范围内......
of ore mineralogy on the microbial leaching of low grade complex sulphide ores have been initially investigated and reported in OLUBAMBI et al[16] with respect to zinc and copper recoveries. ... to zinc, lead copper, and iron recovery, electrochemical technique and scanning electron microscopy method. 2 Materials and methods 2.1 Ore A complex sulphide ore obtained from Ishiagu, South Eastern......
；浸金；除铁Pretreatment by sulfuric acid-curing of calcine roasting for gold ores with high sulfur and arsenic contentsYANG Yong-bin,ZENG Guan-wu,LI Qian,LIU Xiao-liang,JIANG Tao,LIU Bo(School of Minerals... iron in calcine is reduced to 7.23% after a pretreatment of sulfuric acid content 75%,excess coefficient of sulfuric acid 1.4,curing temperature 250 ℃ and curing time 1 h.Key words:gold ores with high......
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Leaching of low grade zinc oxide ores in Ida2--H2O system DOU Ai-chun, YANG Tian-zu, YANG Ji-xing, WU Jiang-hua, WANG An School of Metallurgical Science and Engineering, Central South University... words: Ida2-; zinc oxide ore; leaching 1 Introduction Nowadays, with the depletion of zinc sulphuric ores which are easily upgraded by floatation, low grade zinc oxide ores, which are difficult......
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