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Redox behavior of gold supported on ceria and ceria-zirconia based catalysts Carla de Leitenburg1,Marta Boaro1,Alessandro Trovarelli1,Jordi Llorca2,Michela Vicario3 (1.Dipartimento di Scienze e...;3.Dipartimento di Scienze e Tecnologie Chimiche,Università di Udine,Via del Cotonificio 108,33100 Udine,Italy) Abstract:A series of gold-based catalysts were prepared by deposition precipitation......
Trans. Nonferrous Met. Soc. China 25(2015) 3454-3460 Effect of arsenopyrite on thiosulfate leaching of gold Yong-bin YANG, Xi ZHANG, Bin XU, Qian LI, Tao JIANG, Ya-xuan WANG School of Minerals... solution to clarify the role of arsenopyrite on the thiosulfate leaching of gold. The effect of arsenopyrite on the thiosulfate leaching of gold was studied by the thermodynamic calculation, mineral......
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Effect of mechanical activation on thiosulfate leaching of gold from complex sulfide concentrate Mohsen HASHEMZADEHFINI1, Jana FICERIOV?2, Emad ABKHOSHK3, Behrouz Karimi SHAHRAKI1 1. Iran Mineral..., Islamic Azad University, Tehran, Iran Received 14 March 2011; accepted 8 June 2011 Abstract: The use of mechanical activation to enhance gold recovery from a CuPbZn complex sulfide concentrate......
Nickel release rate of 18KW gold alloy for ornamentsJun-Ping Yuan1,2,Wei Li1,Wen-Ming Liu21. Department of Materials Science and Engineering, Jinan University2. Jewelry Institute of Guangzhou Panyu Polytechnic摘 要:Nickel is widely used as a bleaching element in white gold alloys, but it is a potential allergen. In this paper, a popular 18 KW gold alloy......
山东黄埠岭金矿床金矿物及载金矿物特征张五荣1,张渊1,张佳楠1,张洪喜2,杨开春2(1.吉林省长春市吉林大学地球科学学院2.招远市蚕庄金矿)摘 要:黄埠岭金矿床是招莱金矿带内典型的脉型金矿床之一.研究表明,该矿床矿石中金主要是以显微可见的金银系列矿物,呈裂隙金,包裹金和粒间金产于黄铁矿,石英,黄铜矿,方铅矿,闪锌矿,钾长石和硫盐矿物等之中.金矿物主要富集在早期金矿化的二,三成矿阶段和晚期硫盐矿物富集阶段.这一特征与区域招莱金矿带内其他金矿床相比较,该矿床具有晚期金与硫盐矿物共生富集特征,证明该矿床存在两期金矿化......
Research Progress in Solderable Black Pad of Electroless Nickel/Immersion Gold刘海萍,李宁,毕四富,黎德育摘 要:Electroless nickel/immersion gold (ENIG) technology is widely used as one of the surface final finish for electronics packaging substrate and printed circuit board (PCB), providing a protective, conductive and solderable surface. However, there is a solder......
Regularity and prediction of ground pressure in Haigou Gold MineMeifeng Cai,Shuhua Hao,and Hongguang Ji Civil and Environmental Engineering School,University of Science and Technology Beijing,Beijing 100083,China摘 要:Previous mining excavation in upper sublevels left several mined-out areas in Haigou gold mine. To ensure safety of the main and auxiliary......
Kinetics of stripping of gold loaded in DBC organic phase by sodium sulfiteZHU Ping and GU Guobang College of Environment Science and Engineering, Shanghai University, Shanghai 200072, China Department of Applied Chemistry, South China University of Technology, Guangzhou 510640, China摘 要:<正>The kinetics of stripping of gold loaded in dibutyl......
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