镍的萃取和钴电解液净化 2.溶剂萃取净化钴电解液

采用三段萃取流程净化钴电解液：P２０４萃取除铁、锌、锰，环烷酸（ＨＡ）－吡啶酯（ＰＥ２０６）萃取除铜，ＨＡ－ＰＥ２０６萃取除镍．进行了半工业试验．净化后液满足生产１＃钴新液要求(Co100g/1,Zn(0.001g/1,Cu(0.0003g/1)，并得到１号钴产品．

几种螯合树脂在模拟的钴电解液中吸附铜的性能研究

对比研究了三种亚胺二乙酸螯合树脂D850、D463、D751、一种氨膦酸基螯合树脂D860及一种氨甲基吡啶树脂CuWRAM在模拟的钴电解液的硫酸盐体系、氯盐体系及硫酸盐-氯盐混合体系中吸附铜的性能。结果表明:五种树脂均在料液pH较高的条件下对铜的吸附容量最大,其中以D860的对铜的交换容量最大,以CuWRAM对铜的交换容量最小;通考察解吸液,CuWRAM解吸液中Cu∶Co大于1200以上,其它树脂解吸液中Cu∶Co小于7,CuWRAM表现出优异的铜钴分离性能。

电解镍/钴工艺参数对产物纯度和品质的影响研究

电解镍和钴是重要的金属材料,广泛应用于电池、合金、电子元件等领域。在电解镍/钴的生产过程中,工艺参数对产物的纯度和品质具有重要影响。本文通过对电解过程的概述和工艺参数的重要性进行介绍,探讨了工艺参数对产物纯度和品质的影响,同时,提出了优化工艺参数的方法。研究旨在提高电解镍和钴的生产效率,满足不同领域的需求,推动相关产业的发展。

吸附胶体浮选法处理电解钴废水的研究

采用吸附胶体浮选法处理电解钴废水。用十二烷基磺酸钠（ＳＬＳ）作浮选剂，用ＦｅＣｌ３和Ａｌ２（ＳＯ４）３作混凝剂，浮选后废水可达到国家工业废水排放标准（３ｍｇ／Ｌ）。为实际废水的处理提供了可靠的依据。

电解钴始极片与吊耳电阻点焊接头的组织分析

通过对不同焊接工艺参数点焊的焊接接头组织进行金相观察与分析,对接头组织中出现的平行滑移带、交滑移带、再结晶现象的作用也进行了分析与讨论.结果表明,母材为单相时,液固前沿小的过冷度及低的形核率使焊接接头易于在接头中心区域形成粗大柱状晶;冷却过程施加的电极压力会在柱状晶中产生平行滑移带及交滑移带,电极力越大则滑移带越密集;在形变柱状晶内存在不完全的动态再结晶行为,平行滑移线及交滑移线成为了新晶体形核与生长的最有利生长台阶.

电解钴废水处理的研究

采用气浮法处理电解钴废水。用十二烷基磺酸纳(SLS)作浮选剂,用FeCl3 和Al2 (SO4)3 作混凝剂,气浮后水可达到国家工业废水排放标准(3mg/L)。为实际废水的处理提供了可靠的依据。

硫化沉淀浮选处理电解钴镍废水的实验研究

用丁基黄原酸钠为浮选剂、硫化钠为沉淀剂，采用硫化沉淀浮选的方法处理电解钴镍废水，可以使处理水水质中的钴镍达到国家排放标准．

阳极氧化铝电解着色选择性吸收涂层——钴盐电解着色

本文报道了在铝底材上采用磷酸溶液阳极氧化,钴盐电解着色方法制备的太阳能选择性吸收层。该吸收层的吸收率α_s=0.92—0.94,法向发射率ε_n=0.10—0.17。着色层经200℃加速试验及室外曝晒试验,光学性能无明显变化。氯化钠溶液内长期浸泡试验和磨损试验表明,该着色膜具有良好的耐蚀性和耐磨性。AES分析和X射线衍射分析表明,着色吸收膜是由多孔氧化铝、氢氧化铝和沉积在孔底的α钻构成。

电解钴氯气回收系统的改造实践

分析了试生产过程中造成钴电解氯气回收系统填料吸收塔外排氯气和电解槽边空气含氯超标的原因,介绍了针对存在问题采取的改进措施及取得的效果。

高纯电解钴的制备方法

制备高纯电解钴的冶金工艺过程主要包括萃取法、离子交换法、电解精炼法等,这些方法在提纯方面发挥着不同的作用。萃取法对大多数金属离子有较好的效果,但对微量的Ni、Cu金属离子的分离效果较差;离子交换法对性质相近的元素有较好的分离效果;多次电解精炼可以进一步降低杂质含量;熔盐电解对设备的要求较高。在总结上述提纯工艺的基础上,提出联合采用萃取法或离子交换法除去钴溶液中的大部分杂质,再采用电解进一步提纯,制备得到高纯度的电解钴产品。

螯合树脂Monophos去除硫酸钴溶液中痕量铁的热力学分析

研究不同吸附条件下新型螯合树脂Monophos对硫酸钴溶液中痕量铁的吸附效果,从热力学角度分析了树脂的吸附机理。结果表明,Monophos吸附除铁后,初始料液中痕量铁的浓度分别从1.1~2.1mg/L降至0.4~0.9mg/L,铁脱除率可达57%~63%。Monophos对料液中铁的吸附为自发的物理吸附,更符合Langmiur等温吸附模型,随着吸附温度的升高,Monophos对料液中杂质铁的吸附更充分。

改进电解槽防腐层延长电解槽寿命

本文总结介绍了成都电冶厂30多年采铜、镍、钴电解精炼过程中电解槽防腐进展和防腐所采用材质、配方等,并总结了延长电解槽寿命的措施。

新型二氧化硅基螯合树脂的合成与除铜性能研究

以色谱柱填料二氧化硅为原料,首先采用3-氯丙基三乙氧基硅烷对二氧化硅进行硅烷化反应,再在二氧化硅表面接枝多胺基线性聚合物聚乙烯亚胺(PEI),得到一种多胺基树脂(Si-PEI)。利用胺基与2-氯甲基吡咯的功能化反应,合成了一种用于硫酸钴电解液深度净化除铜的新型二氧化硅基氨基吡咯螯合树脂(Si-AMP)。红外、元素分析结果表明,二氧化硅表面成功引入了氨基吡咯官能团。从料液pH、吸附动力学及分离性能等方面考察了树脂对Cu2+、Ni 2+、Co2+的吸附性能。树脂在溶液pH 3.8时对Cu2+、Ni 2+、Co2+的最大吸附量分别为0.35mmol/g、0.25mmol/g、0.22mmol/g。模拟钴电解液静态吸附试验得到树脂对铜钴的分离系数达3 167,净化后溶液铜离子含量低于1mg/L。

Influence of Triarylamine and Indoline as Donor on Photovoltaic Performance of Dye-Sensitized Solar Cells Employing Cobalt Redox Shuttle

Two organic dyes XSS1 and XS52 derivated from triarylamine and indoline are synthesized for dye-sensitized solar ceils （DSCs） employing cobalt and iodine redox shuttles. The effects of dye structure upon the photophysical, electro-chemical characteristics and cell perfor- mance are investigated. XS51 with four hexyloxyl groups on triarylamine performs better steric hindrance and an improvement of photovoltage. X852 provides higher short-circuit photocurrent density due to the strong electron-donating capability of indoline unit. The results from the redox electrolyte on cell performances indicate that the synthesized dyes are more suitable for tris（1,10-phenanthroline）cobalt（II/III） redox couple than I-/I3- redox couple in assembling DSCs. Application of X852 in the cobalt electrolyte yields a DSC with an overall power conversion efficiency of 6.58% under AM 1.5 （100 mW/cm2） irradiation.

Co-Cu-Zn-Pb-Ni-Cl-H_2O体系的热力学分析

根据配位化学热力学平衡原理,通过热力学平衡计算绘制出了298.15 K时钴电解液体系中5种金属离子(Co2+、Cu2+、Zn2+、Pb2+、Ni2+)及其配离子的c-lg c[Cl]T图和c-pH图。热力学计算显示,pH为2.5时钴电解液中铅、锌主要以配合阴离子形式存在,钴、铜、镍主要以阳离子形式存在,可以采用阴离子树脂交换法将微量铅、锌与钴、铜、镍有效分离。对所绘的热力学平衡图分析表明,高浓度氯离子有利于与金属形成配合离子,提高铅锌的配合阴离子含量,有利于阴离子树脂交换除铅、锌。

综合提取铁渣中有价金属

本文简述从钴电解系统中和净化后滤渣的铁渣中盐酸浸出综合回收有价金属.

Photovoltaic Performance of Triphenylamine Dyes-sensitized Solar Cells Employing Cobalt Redox Shuttle and Influence of π-conjugated Spacers

Developing photosensitizers suitable for the cobalt electrolyte and understanding the structure-property relationship of organic dyes is warranted for the dye-sensitized solar cells （DSSCs）. The DSSCs incorporating tris（1,10-phenanthroline）eobalt（Ⅱ/Ⅲ）-based redox elec- trolyte and four synthesized organic dyes as photosensitizers are described. The photovoltaic performance of these dyes-sensitized solar cells employing the cobalt redox shuttle and the influences of the w-conjugated spacers of organic dyes upon the photovoltage and photocur- rent of mesoscopic titania solar cells are investigated. It is found that organic dyes with thiophene derivates as linkers are suitable for DSSCs employing cobalt electrolytes. DSSCs sensitized with the as-synthesized dyes in combination with the cobalt redox shuttle yield an overall power conversion efficiency of 6.1% under 100 mW/cm2 AM1.5 G illumination.

Fixed-bed column study for deep removal of copper(Ⅱ) from simulated cobalt electrolyte using polystyrene-supported 2-aminomethylpyridine chelating resin

This study presents the deep removal of copper (Ⅱ) from the simulated cobalt electrolyte using fabricated polystyrene-supported 2-aminomethylpyridine chelating resin (PS-AMP) in a fixed-bed.The effects of bed height (7.0–14.0 cm),feed flow rate (4.5–9.0 mL/min),initial copper (Ⅱ) concentration of the feed (250–1000 mg/L),feed temperature (25–40 ℃) and the value of pH (2.0–4.0) on the adsorption process of the PS-AMP resin were investigated.The experimental data showed that the PS-AMP resin can deeply eliminate copper (Ⅱ) from the simulated cobalt electrolyte.The bed height,feed flow rate,initial copper (Ⅱ) concentration of the feed,feed temperature and feed pH value which corresponded to the highest removal of copper (Ⅱ) were 7.0 cm with 35 mm of the column diameter,4.5 mL/min,40℃,1000 mg/L and 4.0,respectively.The breakthrough capacity,the saturated capacity of the column and the mass ratio of Cu/Co (g/g) in the saturated resin were correspondingly 16.51 mg/g dry resin,61.72 mg/g dry resin and 37.67 under the optimal experimental conditions.The copper (Ⅱ) breakthrough curves were fitted by the empirical models of Thomas,Yoon-Nelson and Adam-Bohart,respectively.The Thomas model was found to be the most suitable one for predicting how the concentration of copper (Ⅱ) in the effluent changes with the adsorption time.

Simultaneous determination of trace Cu^(2+), Cd^(2+), Ni^(2+) and Co^(2+) in zinc electrolytes by oscillopolarographic second derivative waves

Simultaneous determination of impurity metal ions in high concentration zinc solution is very important for zinc hydrometallurgy,and the purpose is to establish a method for determining the trace Cu^2+,Cd^2+,Ni^2+and Co^2+in zinc electrolytes at the same time using the second derivative waves of single sweep oscillopolarography.Factors affecting the derivative waves of the ions were researched in a medium of dimethylglyoxime(DMG)-sodium citrate-sodium tetraborate.The results indicated that the interferences of a high concentration of Zn^2+and most other coexisting ions on the determination can be eliminated;when the Cu^2+,Cd^2+,Ni^2+and Co^2+are in the ranges of1×10^-7-3×10^-4,6×10^-7-2×10^-4,2×10^-8-1×10^-5and1×10^-8-3×10^-5mol/L,respectively,the relationships between the peak currents of the second derivative waves and the concentrations are linear;the detection limits to determine the Cu^2+,Cd^2+,Ni^2+and Co^2+are8×10^-8,2×10^-7,6×10^-9and4×10^-9mol/L,respectively.Without any sample pretreatment,the method was used to directly determine the trace Cu^2+,Cd^2+,Ni^2+and Co^2+in actual zinc electrolytes with satisfactory results.The method is simple,sensitive and rapid.

Coupled cobalt-doped molybdenum carbide@N-doped carbon nanosheets/nanotubes supported on nickel foam as a binder-free electrode for overall water splitting

In an attempt to develop low-cost,non-noble-metal bifunctional electrocatalysts for water electrolysis in alkaline media,cobalt-doped molybdenum carbide@N-doped carbon nanosheets/nanotubes were fabricated by using C3N4 as the carbon source on a 3D porous nickel foam substrate.Benefiting from the optimized electronic structure and enhanced mass and charge transport,as well as the 3D conducting pathway,MoxCoy@N-CNSs/CNTs shows superior performance towards both the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)in an alkaline medium.The optimal electrocatalyst is Mo2Co1@N-CNSs/CNTs,which reveals a current density of 10 mA cm^-2 at the low overpotentials of 99 mV and 300 mV for the HER and OER,respectively,and a relatively low cell voltage(1.63 V)for the overall water electrolysis.The method of optimizing the composition and nanostructure of a material provides a new avenue for the development and utilization of high-performance electrocatalysts.