新疆哈密沙西东一区铜金矿区地质特征及控矿因素

新疆哈密沙西东一区铜金矿区位于大南湖-头苏泉古生代岛弧带的北段、东天山卡拉塔格地区铜多金属成矿带的东侧。矿体主要赋存于奥陶系中统荒草坡群大柳沟组下段蚀变凝灰岩和角砾凝灰岩中,次为花岗岩体内,严格受控于北西-北西西向黄铁绢英岩化带、含金矿化蚀变带和中酸性岩体次生裂隙。深部中酸性岩体侵入,为区内成矿元素活化、富集提供了能量来源和物质基础。     

球铁中微量元素Cu,Cr,Bi分布的SPM分析

球铁石墨相中含有多种微量元素,微量元素中的反球化元素的含量高低和分布对石墨球化、球铁的机械和力学性能有直接影响,为了深入研究球化机制,将球铁制成10μm厚的靶片,用SPM分析了微量元素Cr、Cu、Bi在球墨中和周围的分布,给出了球铁中微量元素二维等高线分布图。实验结果表明球铁中Cr、Cu主要分布在基体中,随着反球化元素Bi含量的增加,Cu逐渐侵入石墨相,在反球化作用中Cu和Bi可能是一组相关的元素。     

The Effects of Nonuniform Thermal Boundary Condition on Thermal Stress Calculation of Water-Cooled W/Cu Divertors

The thermal boundary condition has very important effects on the accuracy of thermal stress calculation of a water-cooled W/Cu divertor. In this paper, phase-change heat transfer was simulated based on the Euler homogeneous phase model, and local differences of liquid physical properties were considered under one-sided high heating conditions. The steady-state temperature field and thermal stress field under nonuniform thermal boundary conditions were obtained through numerical calculation. By comparison with the case of traditional uniform thermal boundary conditions, the results show that the distribution of thermal stress under nonuniform thermal boundary conditions exhibits tbe same trend as that under uniform thermal boundary conditions, but is larger in value. The maximum difference of maximum von Mises stress is up to 42% under the highest heating conditions. These results provide a valuable reference for the thermal stress caleulat.ion of water-cooled W/Cu divertors.     

某电厂发电机转子冷却水处理方式的优化与改造

简要介绍了某电厂转冷水中铜含量高的原因及水处理方式的特殊性,重点介绍了智能净化装置在该电厂的应用情况,并提出了相应的优化与改造方法,从而确保水质始终保持在最佳防腐范围内。     

在阴离子胶束介质中分光光度法测定微量铜

铜（Ⅱ）与二乙基胺二硫代甲酸钠（铜试剂,简称ＤＤＴＣ）形成的络合物在水中溶解度很小,通常是用四氯化碳萃取后进行分光光度分析〔１〕。我们发现十二烷基硫酸钠阴离子胶束介质对该铜络合物有明显增溶作用,可不经萃取直接进行光度分析,并对钢铁、铝合金、一些无机盐...     

流动注射—胶束增溶分光光度法测定痕量Cu(Ⅱ)

建立了一种流动注射—胶束增溶分光光度法测定痕量Cu(Ⅱ)的新方法。对流速、进样体积、反应圈长度等流动注射系统条件进行了优化,并对Cu(Ⅱ)与二溴羟基苯基荧光酮(DBHPF)的显色反应进行了探讨。结果表明,在pH 5.4的六次甲基四胺-盐酸介质中,在表面活性剂溴化十六烷基吡啶(CPB)和聚乙二醇烷基苯基醚(OP)存在下,DBHPF与Cu(Ⅱ)生成紫色络合物,该络合物的最大吸收峰在530 nm,在此波长连续检测,Cu(Ⅱ)在10~210μg/L浓度范围内符合比尔定律,在24样/h采样频率下检出限为0.98μg