共搜索到3338条信息，每页显示10条信息，共334页。用时：0小时0分0秒515毫秒
and metallogenetic age of Zhuanghe gold deposit, Liaoning province, China WEI Jun-hao(魏俊浩), TAN Wen-juan(谭文娟), GUO Da-zhao(郭大招), TAN Jun(谭 俊), LI Yan-hua(李闫华), YAN Yun-fei(鄢云飞) (Faculty of Earth..., and Pb isotope and Rb-Sr dating were carried with MAT-261 multi-acceptor mass spectrometer. The results show that the δ18O values of gold-bearing vein quartz from different levels are 1.19%-1.42......
......
Electrochemical studies on interplay of mineralogical variation and particle size on bioleaching low grade complex sulphide ores P. A. OLUBAMBI1, J. H. POTGIETER2, S. NDLOVU3, J. O... biooxidation kinetics of a refractory gold-bearing pyrite concentrate, and reported that there was a slight increase in the bioleaching rate when pyrite with a size distribution of (53±75) μm......
......
用,分别利用其中的硫和铁制备硫酸和固硫剂. REFERENCES [1] 杨振兴. 难处理金矿石选冶技术现状及发展方向[J]. 黄金, 2002, 23(7): 31-33. YANG Zhen-xing. The status quo of treating refractory gold ores[J]. Gold, 2002, 23(7): 31-33. [2] 郑 晔. 难处理金矿石预处理.... WANG Li-jun, LIU Chun-qian. Overview of pretreatment technique of refractory gold ores[J]. Gold, 2001, 21(1): 38-45. [4] 刘俊壮, 黄万抚. 含高砷金矿浸金工艺研究现状[J]. 现代矿业, 2010, 50(10): 26-29. LIU Jun-zhuang, HUANG Wan......
chrysosporium; pyrite; bio-dissolution; Carlin-type gold ores; electrochemistry 1 Introduction Carlin-type gold ores are a kind of refractory gold ores due to the micro-disseminated gold and the "preg... sulfide minerals from coals and gold ores [6,18,19]. Therefore, P. chrysosporium is considered as a potentially usable fungus for pretreating refractory gold ores. Pyrite is the most important gold-bearing......
Research Progress in Solderable Black Pad of Electroless Nickel/Immersion Gold Bi Sifu1,Liu Haiping1,Li Deyu1,Li Ning1 (1.Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China) Abstract: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......
Gold Distribution in Tellurium-Rich Pyrite and Tellurides from the Xiaoqinling Gold District, Southern Margin of the North China Craton () 摘要: Gold is commonly associated with arsenic in Asrich pyrite or arsenopyrite in a variety types of gold deposit, such as sediment-hosted gold deposits, epithermal Au-Ag deposits, Au-rich VMS deposits, and mesothermal lode gold deposits (Ciobanu......
......
; Acidithiobacillus ferrooxidans 1 Introduction Many sulfide gold ores contain various amounts of arsenic, often in the form of arsenopyrite, FeAsS[1]. For refractory, arsenic-bearing sulfide gold ores... process for bio-oxidation of refractory arsenopyritic gold ores [4-6]. Bio-oxidation makes use of iron and sulfur oxidizing bacteria to catalyze the oxidation of sulfides, liberating gold for subsequent......
