Solvent Extraction of Copper from Sulfate–Chloride Solutions Using LIX 84-IC and LIX 860-IC

ABSTRACT

The effect of chloride ions on the copper extraction equilibria, the rate of extraction, copper/iron selectivity, and chloride extraction was studied for organic phases containing pure ketoxime (LIX 84-IC) and pure nonylaldoxime (LIX 860N-IC). In these systems, the used aqueous phase contained total chloride concentrations from 0 to 110 g/l. It was determined that the chloride ions in the aqueous solution had a large negative effect on the extraction equilibria for LIX 84-IC and a small effect for LIX 860N-IC. This deleterious effect is attributed to an increase in the hydrogen ion activity coefficient in the presence of chloride ions. The chloride accelerated the rate of copper extraction even though the reaction was fast in all the tested conditions. An increase in the temperature from 25°C to 35°C affected positively the extraction equilibria for LIX 84-IC.     

CGCS2000与WGS84之间转换的研究

坐标系统是在海洋石油勘探过程中基础的技术支撑,对采集的数据与现有数据的匹配、处理及融合等都会产生影响。本文对CGCS2000的基础参数和特点进行介绍,将WGS84与CGCS2000进行对比,根据现有的转换模型,对两者之间的转换参数进行研究。     

基于CORS的地壳运动变形监测分析 基准的合理选择方法

介绍了GPS定位中有关坐标参考框架的一些重要概念,对坐标参考框架的一致性问题和采用GPS协议地球坐标系(ITRF或WGS-84)作为变形基准的特点及其适用性进行了对比分析,提出了采用ITRF作为变形分析基准时的坐标参考框架的转换与统一方法.     

3种工艺制备医用钛钼合金性能的对比分析

基于医用"硬组织置换"材料用途,作者采用SPS工艺、粉末冶金、原子合金化3种工艺制备出4种钛钼合金,对其力学性能进行了对比分析.研究结果表明:粉末冶金工艺制备的钛钼合金具有良好的力学性能和均匀的微孔结构,其中2 h球磨1 200℃烧结钛钼合金具有最好的强度、最高的弹性模量,但是塑性最差,5 h球磨1 200℃烧结合钛钼合金具有最好的塑性、较好的强度和较低的弹性模量,证明该制备工艺是一种综合性能较好的制备工艺;原子合金化1 200℃烧结钛钼合金具有最低的弹性模量、较好的塑性,但是屈服强度和断裂强度不高,尤其是断裂强度最差;SPS工艺制备的钛钼合金最为致密,具有较好的塑性和断裂强度,但是屈服强度最小.上述3种工艺制备的钛钼合金都具有较低的弹性模量.     

SE9100视觉系统与SR84××SCARA系列机器人的坐标变换及应用

介绍了从 Ｓ Ｅ９１００ 视觉系统的图像监视器坐标变换成 Ｓ Ｒ８４×× Ｓ Ｃ Ａ Ｒ Ａ 系列机器人坐标的原理、 Ｓ Ｅ９１００ 视觉系统函数库中的坐标变换函数及综合应用上述视觉系统和机器人对直齿圆柱齿轮进行检验的原理。     

矿区坐标系与WGS-84坐标系转换方法

利用矿区平面三角控制网中的三等点进行GPS观测,采用三、七参数转换模型,建立了鹤岗矿区坐标系统与WGS-84坐标系统之间的联系,为矿区利用GPS技术进行矿区坐标系统测量实时动态,定位出所需矿区坐标、高程,并且进行精度分析。     

辽河西部凹陷杜84块兴隆台Ⅰ油层隔夹层识别、成因及分布特征

隔夹层是储层非均质性的主要控制因素之一,探讨隔夹层为油藏精细描述和剩余油研究奠定基础。以岩心、生产动态数据为基础,综合辽河西部凹陷曙一区1735口测井资料,利用电性及物性测试分析,按照岩心标定测井曲线,编制5种参数（声波时差、深侧向电阻率、感应电导率、孔隙度和渗透率）交会图。将研究区的隔夹层分为泥质隔夹层和物性隔夹层两类,并建立两类隔夹层定量划分标准和识别模板。研究区隔夹层发育主要受控于洪泛期沉积、局部区域水动力减弱、多期河道切割侵蚀、前积（侧积）和河床滞留沉积的综合作用。泥质隔夹层主要集中分布在滨浅湖和分流间湾处,物性隔夹层主要分布在水下分流河道分支处及分流间湾的局部;在靠近物源区,隔夹层分布较少且较孤立,仅在两期河道叠置间发育,而在远离物源区分布明显增多且厚度增大;隔夹层在垂向上的分布与所处的基准面旋回关系密切,在中期旋回上升半旋回的3个阶段,隔夹层自下而上数量增多、厚度增大。最后提出隔夹层的岩性、物性、厚度及展布特征影响蒸汽辅助重力泄油（SAGD）技术对辽河油田稠油的生产。     

Frequency shift attack on ‘plug-and-play’ quantum key distribution systems

Many imperfections in a practical quantum key distribution (QKD) system have been exploited by an eavesdropper (Eve) to attack the system. However, most of these attacks will introduce perturbations to the system while collecting information about the key. For example, the phase-remapping attack [Phys. Rev. A2007,75, 032314], in which Eve performs time shift on the signal pulse from the constant acting range of the phase modulation voltage to its rising edge to introduce an imperfection, results in an quantum bit error rate (QBER) of 14.6%, which is too high and will be discovered by careful users. In this paper, a frequency shift (FS) attack on ‘plug-and-play’ QKD systems with phase-coding BB84 protocol is proposed, in which Eve introduces an imperfection by the same method as she used in the phase-remapping attack. The most novel advantage of our FS attack is that Eve can get full information without introducing detectable QBER, which is more deceptive than the phase-remapping attack.     

基于SAP84的附着动臂塔式起重机结构设计

塔式起重机是现代工业区与民用建筑的主要机械之一,对一台电力建设所用大型动臂塔式起重机的机械结构设计进行了简单介绍。设计中考虑了整机的安全性与经济性,为了增加数据的准确可靠性以及结构的合理性,采用有限元软件SAP84分析,力求使整机的利用率达到最高。