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Trans. Nonferrous Met. Soc. China 30(2020) 1091-1101 Electrochemical mechanism and flotation of chalcopyrite and galena in the presence of sodium silicate and sodium sulfite Ye ZHANG1,2, Run-qing... 410100, China Received 27 June 2019; accepted 18 February 2020 Abstract: The electrochemical mechanism involved in the selective separation of chalcopyrite from galena was investigated by flotation......
for Nonferrous Metals, Beijing 100088, China) Abstract: The flotation behaviors of chalcopyrite, pyrite, and sphalerite in the present or absent of collector were studied. The relationship between the floatability and the pulp potential was simulated through flotation test and electrochemical calculation. When the pulp pH value is lower than 4.0, chalcopyrite can be floated in the potential range from 0......
黄铜矿和闪锌矿的X射线衍射分析和化学组成.由图1和表1可见,试验所用的黄铜矿和闪锌矿纯度较高,符合试验要求. 试验用的黄原胶,丁基黄药,盐酸,氢氧化钠均是从上海思域化工有限公司购买的分析纯药剂,蒸馏水为实验用水. 图1 黄铜矿和闪锌矿的XRD谱 Fig. 1 XRD patterns of chalcopyrite(a) and sphalerite(b) 表1 黄铜矿和闪锌矿化学组成分析 Table 1 Chemical composition of chalcopyrite and sphalerite 1.2 浮选实验 称取2 g硫化矿物放入XFGII-5型挂槽浮选机的浮选槽中,后在浮选槽中加入蒸馏水40 mL,启动浮选机搅拌混匀,根据试验要求矿浆pH使用盐酸或氢氧化钠调节,依次加入黄原胶抑制剂,丁基黄药捕收剂,MIBC......
液加入密封的烧杯中,在pH值为12,转速为1200 r/min条件下搅拌24 h,过滤后真空干燥. 图1 黄铜矿单矿物的XRD谱 Fig. 1 XRD pattern of chalcopyrite monomineral 试验所用次氯酸钠,焦亚硫酸钠活化后的黄铜矿样品制取方法如下,取若干氰化黄铜矿样品置于XFG-Ⅱ浮选机的40 mL有机玻璃槽中,分别加入适量的3 mL...进行量热试验较为合适. 图3 丁基黄药用量和活化剂用量对氰化黄铜矿回收率的影响 Fig. 3 Effects of butyl xanthate(a) and activator(b) dosages on recovery of cyanide chalcopyrite 次氯酸钠为强氧化剂,当其用量较低时可优先对CN-起氧化作用[15],由图3(b)可看出,随着次氯酸钠......
文献标志码:A 文章编号:1672-7207(2010)04-1234-06 Chalcopyrite bioleaching by moderate thermophilic bacteria... microscopy. The chalcopyrite bioleaching by moderate thermophilic bacteria was studied, the bacterial morphology, physiological and biochemical characteristics were described and the mechanism of chalcopyrite......
Trans. Nonferrous Met. Soc. China 29(2019) 617-624 Bioleaching of chalcopyrite with different crystal phases by Acidianus manzaensis Zhen-yuan NIE1, Wei-wei ZHANG1, Hong-chang LIU1,2, Hong-rui ZHU1... December 2017; accepted 17 May 2018 Abstract: Bioleaching of chalcopyrite with different crystal structures (α-phase, β-phase and γ-phase) by Acidianus manzaensis was comparatively studied by synchrotron......
GGA-PW91. 2 结果与讨论 2.1 能带和态密度分析 黄铜矿和方铅矿晶体的能带结构及原子分态密度图如图1和2所示. 图1 黄铜矿的能带结构和各原子分态密度 Fig. 1 Band structure(a) and partial density of states (PDOS)(b) of chalcopyrite 图2 方铅...的Mulliken布居数越小,成键的离子性越强.在同一基组条件下,黄铜矿与方铅矿的原子Mulliken布居数见表2,键的Mulliken布居数见表3. 图3 黄铜矿(101)解理面上各原子的分态密度对比 Fig. 3 Comparison of PDOS of atoms on chalcopyrite (101) surface 图4 方铅矿晶体与(100......
and adsorption mechanism of BOPHPDT to chalcopyrite[J]. The Chinese Journal of Nonferrous Metals, 2021, 31(8): 2247-2257. DOI: 10.11817/j.ysxb.1004.0609.2021-40040 二硫代氨基甲酸酯是一类分子中含有硫代羰基官能团(C=S)的化合物,其活性中心硫原子上具有.... 图1 pH值对黄铜矿浮选回收率的影响 Fig. 1 Effect of pH values on flotation recovery of chalcopyrite 图2 捕收剂用量对黄铜矿浮选回收率的影响 Fig. 2 Flotation recovery of chalcopyrite as function of collector......
for bioleaching of chalcopyrite concentrate 1.4 搅拌反应器浸出条件优化 黄铜矿精矿的生物浸出试验在10 L搅拌反应器(见图1)中进行,反应器外围中空可充水夹套恒温45 ℃,浸出初始pH值为1.5,接种量10%,矿浆浓度为100 g/L.生物浸出过程中用1:1的H2SO4或10 mol/L的NaOH维持pH值的稳定. 1.4.1 搅拌速率...生物的碳源,用以合成自身生长所需的有机物,因此,充足的O2和CO2才能保证浸矿细菌的良好生长,从而保证浸矿效率. 图6 反应器中搅拌速度对生物浸出黄铜矿精矿的影响 Fig. 6 Effects of stirring rate on bioleaching of chalcopyrite in tank reactor 图7 反应器中不充气强度对黄铜矿精矿生......
Effect of potential on characteristics of surface film on natural chalcopyrite YU Juan1, YANG Hong-ying1, FAN You-jing2 1. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China; 2. School of Sciences, Northeastern University, Shenyang 110004, China Received 30 October 2010; accepted 27 May 2011 Abstract: Electrochemical behavior of natural chalcopyrite......