废旧三元电池正极活性材料盐酸浸出液中钴锰共萃取分离镍锂

废旧三元电池正极活性材料盐酸浸出得到含金属钴、锰、镍、锂的浸液,比较选择了新型萃取体系Aliquat336+TBP/煤油共萃取钴锰并分离镍锂,提出了浸液中回收有价金属的新方法。研究了萃取剂种类、修饰剂、萃取剂浓度和相比等因素对钴锰共萃取分离镍和锂的影响。研究表明,当浸出液中氯离子浓度高于6.5M时,Aliquat336+TBP在煤油稀释剂中能够有效萃取钴锰分离镍锂,其它胺类萃取剂如Alamine 304、Alamine 308和Alamine336萃取效果明显低于Aliquat 336。优化条件下Aliquat 336+TBP体系对Co/Mn、Co/Ni和Co/Li分离系数分别为7、1 061、3 183;Mn/Ni和Mn/Li分离系数分别为156和468,表明钴锰能实现高效共萃,并与镍锂高效分离。TBP在体系中主要作为相修饰剂,但对钴锰的萃取起到了协同萃取的效果。采用Aliquat 336+TBP萃取体系共萃取钴锰,设计了废旧三元电池正极活性材料盐酸浸出液中回收钴镍锰锂的新方法。     

钴镍的溶剂萃取分离工艺研究综述

介绍了含磷类萃取剂、Cyanex272和胺类萃取剂在不同溶液体系中钴镍分离的应用,并分析了协同萃取体系在钴镍分离中的应用,指出协同萃取体系是今后钴镍分离的发展方向。     

用叔胺从氯化镍溶液中萃取铜和钴并分段反萃钴和铜的工业试验研究

研究了含钴、镍、铜淘琢含钴废合金的综合利用,着重讨论了叔胺萃取分离钴铜与镍以及采用分段反萃分离钴与铜,以达到镍、钴、铜分别回收利用。文中介绍了工业性试验的工艺流程,技术条件以及试验结果。     

用二-(2-乙基己基)二硫代磷酸萃取分离钴锰

<正> 近年来从海底锰结核中综合回收钴镍铜锰等有价金属,对钴锰分离进行了一系列的研究,其中包括氧化沉淀、氨络合物法、硫化沉淀法及应用各种萃取剂的萃取分离方法。上述各种方法,化学分离方法虽然简     

从大洋多金属结核氨浸液中萃取分离铜,镍,钴

用ＬＩＸ８４的煤油溶液作萃取剂，从大洋多金属结核的催化还原氨浸溶液中选择性共萃铜和镍，而钴等留在萃余液中，然后选择反萃镍和铜，再生有机相循环使用，铜和镍溶液可用电积回收铜和镍。本工艺只需一种萃取剂便可有效地将铜、镍、钴三者彼此分离，操作简便，可用于处理大洋多金属结核或其它含铜、镍、钴的复杂矿     

钴镍萃取机理研究概况和萃取剂分子设计探讨

<正> 金川、红旗岭等地以高镍低钴硫化镍矿为主,攀枝花、大冶、大宝山则以低钴镍黄铁矿及其烧渣为主,这些矿都是钴镍共生和存在钴镍分离的共同难题(价数和离子半径相近)。下面着重介绍分离钴镍萃取剂机理研究进展和探讨萃取剂分子设计。     

从钴镍废料电溶液中分离回收钴镍

研究了从钴镍废料电溶液中回收钴、镍，采用的流程为电溶液-针铁矿法除铁-P204萃取除杂-7401萃取分离钴镍-碳酸盐沉淀钴、镍。试验结果表明，采用该方法，可将溶液中的钴和镍有效分离并回收，钴、镍回收率均达99％。无有毒废气、废水产生，废渣少量，可直接外排。     

萃取剂5709 分离硫酸镍溶液中锌钴的工艺研究

长期以来,镍钴的分离一直是一个有色金属提取冶金的重要课题。溶剂萃取法,作为有色金属分离、提取的一种重要的手段和方法,在有色金属的生产过程中已获得了广泛的应用。本文介绍并研究了一种性能优越的新型萃取剂5709及萃取分离硫酸镍溶液中锌、钻的工艺。在用5709萃取剂萃取净化高锌硫酸镍溶液,满足制取结晶硫酸镍的技术质量要求的同时,利用交换萃取原理,通过控制钴反萃液的酸度,成功地在同一萃取系统中实现镍-钴-锌的相互分离,实现钴和锌的回收。     

多金属结核氨浸液中镍钴铜的萃取分离

采用LIX84从氨性溶液中萃取分离镍、钴、铜。首先采用 5级逆流共萃铜、镍 ,钴留在萃余液中 ,含铜、镍的负载有机相经二级洗涤氨 ;用镍电解废液进行 7级逆流选择性反萃镍 ,实现镍与铜的初步分离 ;然后从含铜有机相中反萃铜得到纯净的硫酸铜溶液 ,选择性反萃镍得到含有少量铜的粗镍液 ,该液仍采用LIX84萃取脱铜 ,并回收铜 ,从而将铜、镍彻底分离 ,实现了用一种萃取剂分离氨浸液中的镍、钴、铜。联动连续运转试验结果表明 ,采用本研究确定的萃取工艺流程和萃取设备处理氨浸液 ,萃取分离效果好 ,试验结果稳定、可靠。金属回收率高 ,萃取回收率分别为 ( %) :Ni 99 0 ,Co 99 7,Cu 99 9。     

高效的钴、镍分离萃取剂—P-507

钴和镍是性质相似的过渡金属,它们之间的分离是镍、钴冶炼工艺的重要课题。溶剂萃取技术由于具有选择性高、流程简单、操作连续化和易于自动控制等优点,目前已成为镍、钴分离的重要方法之一。在高浓度氯化物溶液中,利用Co、Ni二者与Cl~-络合性能的差异,可用胺类萃取剂如N—235以阴离子交换机理来萃取分离它们,其     

含钼催化剂综合回收工艺研究

主要研究废催化剂中钼、钴、镍的酸浸、萃取和碱浸提钼两种工艺。通过实验比较，提出从废催化剂中综合回收有价金属的工艺路径。     

电解质水溶液中钴、镍分离、提纯研究进展

高浓度、高纯度钴盐电解质水溶液是电解或电解精炼生产高纯乃至超高纯金属钴的关键.钴、镍离子深度地分离是制备该种电解质水溶液的核心任务.研究发现目前主要的分离、提纯方法包括:离子交换法、萃取色层法、膜分离法和溶剂萃取法等.研究对象主要集中在含高镍、低钴的硫酸盐水溶液体系.离子交换法、萃取色层法是实现两者深度分离的有效手段，溶剂萃取法则更易实现规模化.研究主要针对有机萃取剂和吸附材料的研发、改性、组合和分离提取工艺的改进等展开.文中对含钴、镍电解质水溶液中钴、镍分离研究进展进行总结评述，并对其发展进行展望.      

Studies on Processing of an Alnico Scrap

This paper presents the results of research and development work on processing of alnico scrap, a secondary resource of nickel and cobalt, generated during the manufacturing of alnico magnets. The scrap contains 8–10% nickel, 10–12% cobalt, 32–50% of iron, 8–10% aluminium, 2% copper and remaining silica. Various processes such as acid leaching, aqueous chlorine leaching, salt roasting and cupric chloride leaching were studied in detail. Of these cupric chloride leaching was found to be most effective with respect to recovery and purity. It has been possible to obtain pure nickel and cobalt salts by cupric chloride leaching of the scrap, solvent extraction and precipitation of the salts. The overall recovery by the above process was almost 99%.     

P507分馏萃取分离钴镍的研究

高钴低镍原料用P507分馏萃取分离钴镍,萃取段5级,洗涤段5级,硫酸介质。串级模拟实验结果:可获得含镍小于0.03%的高纯钴有机相和含钴小于0.03%的高纯镍水相,钴、镍的收率均大于99.9%。     

Studies on Processing of an Alnico Scrap

Abstract

This paper presents the results of research and development work on processing of alnico scrap, a secondary resource of nickel and cobalt, generated during the manufacturing of alnico magnets. The scrap contains 8-10% nickel, 10-12% cobalt, 32-50% of iron, 8-10% aluminium, 2% copper and remaining silica. Various processes such as acid leaching, aqueous chlorine leaching, salt roasting and cupric chloride leaching were studied in detail. Of these cupric chloride leaching was found to be most effective with respect to recovery and purity. It has been possible to obtain pure nickel and cobalt salts by cupric chloride leaching of the scrap, solvent extraction and precipitation of the salts. The overall recovery by the above process was almost 99%.     

Investigation of the extraction kinetics of cobalt and nickel and the optimization of operation parameters in a mixer-settler for the extraction of cobalt

The extraction kinetics of cobalt and nickel in a mixer-settler have been investigated. The extraction system comprised an aqueous phase of cobalt and nickel sulphate and an organic phase of 10% EHPNA (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester) -kerosene. The experimental results showed that the extraction rates of both cobalt and nickel were high and the extraction rate of cobalt was generally higher than that of nickel.On the basis of research on the extraction kinetics of cobalt, an optimization computation was carried out with total cost as the objective function, and the optimum combination of extraction stage efficiency with the extraction operation parameters was determined. The optimization computation showed that it is best to adopt high input power and short mixer contact time for the extraction of cobalt. The computations also showed that very high extraction stage efficiency is not required for minimum costs.     

镍精矿加压酸浸新工艺研究

研究了金川镍精矿加压一步全浸镍、钴、铜新工艺,浸出液中和除铜后萃取分离镍钴,镍、钴、铜的浸出率可分别达到99.5%、98%和98%以上。该工艺与硫酸选择性浸出相比具有金属浸出率高、分离彻底、易分别回收等优点。     

Recovery of metal values from copper converter and smelter slags by ferric chloride leaching

A study of the recovery of copper, nickel and cobalt from copper converter and smelter slags by leaching with ferric chloride is reported. The converter slag from Ghatsila, India contained 4.03% copper, 1.99% nickel and 0.48% cobalt and the smelter slag contained 1.76% copper, 0.23% nickel and 0.19% cobalt. Various parameters including the effect of stirring, leaching time, leaching temperature, concentration of ferric chloride, solid-liquid ratio and particle size, on the extraction of copper, nickel and cobalt have been studied. 92% copper, 28% nickel and 24% cobalt could be extracted from converter slag under optimum conditions, whereas 54% copper, 71% nickel and 44% cobalt could be extracted from smelter slag.     

Development and Assimilation of Technology of Obtaining Electrolytic Cobalt from Industrial Products

At Norilsk Mining and Metallurgical plant up to now electrolytic cobalt K-0 has been obtained from commodity cobalt hydroxide. This hydroxide was dissolved in hydrochloric acid and was purified from Fe, Cu, and Ni by extraction with sodium salts of synthetic monocarboxylic acids.

A new technology has been developed to use the industrial product of the main cobalt production, i.e., the solution after purification from manganese, instead of commodity hydroxide. This solution contains sulphate and chloride ions. For obtaining electrolytic cobalt from this solution it is necessary to convert the sulphates to chlorides. This is conducted by extraction of cobalt (and heavy metals impurities) with sodium salts of SMA and then by stripping with hydrochloric acid. This procedure allows obtaining the concentrated cobalt chloride solutions and separate light metals. After the conversion the obtained solution is purified from copper by extraction with the cobalt salt of SMA and from nickel by extraction with a mixture of non-chelating aldoximes and SMA. This mixture of extractants provides an effective purification of cobalt solutions. The separation coefficient pN/c is 25-30.

Use of this technology at the Norilsk Mining and Metallurgical plant has allowed the reduction of the reagent expenses and improved the purification from nickel. In addition extraction equipment has been decreased more than two times at the same productivity. The suggested procedure of conversion allows the use of solutions of practically any anion composition for obtaining cobalt.