氯化浸出镍溶液净化全流程研究

本文针对镍精矿、铜渣与一次合金氯化浸出镍溶液的净化和钴、铁的富集回收，就萃取体系的选择，流程设计、分离技术等进行了研究。用单一的Ｎ＿（２３５）（三辛胺）萃取体系同时去除溶液中的铁、铜、钴等杂质，用离子交换法去除溶液中的铅，净化后溶液可满足生产１号电镍的要求，镍收率大于９９％。钻溶液含钴大于ｕ０ｇ／Ｌ，Ｃｏ／Ｎｉ＞５６００，钴收率大于９７％。铁溶液含铁４０～７０ｇ／Ｌ，Ｆｏ／Ｎｉ＞１０００。本流程进行了萃取平衡试验，并用离心萃取器进行了台架试验和半工业试验，结果表明，本流程是切实可行的。     

离心萃取器在镍钴分离中的应用Ⅱ．用于半工业试验

本文报道３０台φ７０ｍｍ玻璃钢离心萃取器回路在金川有色金属公司半工业试验现场的试验结果。钴的单级萃取级效率＞９６％，反萃取级效率＞９４％。萃取回路连续运行１７４ｈ．处理一次合金与铜渣联合氧气浸出液３．５ｍ￣３。得到三个合格产品液：１￣＃电解镍的电解液，ＣｏＣｌ＿２溶液，Ｃｏ＞１２０ｇ／Ｌ，Ｃｏ／Ｎｉ＞１００００和ＦｅＣｌ＿３产品液，Ｆｅ＞６０ｇ／Ｌ，Ｆｅ／Ｎｉ＞１００００。     

氯化浸出镍溶液中钴的分离和回收

本文研究用溶剂萃取法从氯化浸出的氯化镍溶液中分离回收钴的技术。选择Ｎ＿（２３５）（叔胺）－异辛醇　－２６０号煤油萃取体系，离心萃取器做为萃取设备进行了萃取平衡试验、台架试验和半工业试验，得到的ＣｏＣｌ＿２溶液含Ｃｏ＞１２０ｇ／Ｌ，Ｃｏ／Ｎｉ＞１００００，钴收率大于９７％。     

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－吡啶酯萃取除铜,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,Ｆｅ〈０．００１ｇ／１,Ｚｎ〈０．００１ｇ／１,Ｃｕ〈０．０００３ｇ／１）,并得到１号钴产品。     

Ni2+和Co2+对氧化亚铁硫杆菌活性的影响

为配合细菌浸出金川低品位镍矿中镍和钴的生物冶金研究工作,分别研究了Ｎｉ＾２＋、Ｃｏ＾２＋对试验用氧化亚铁硫杆菌的活性影响。结果表明,在常用的细菌浸出条件（３０℃,ＰＨ２０）下,Ｎｉ＾２＋、Ｃｏ＾２＋对该菌株的活性有较大影响,经过在含一定的浓度的Ｎｉ＾２＋、Ｃｏ＾２＋培养基中驯化后,该菌株已基本上能适应耐（Ｎｉ＾２＋）４０ｇ．１＾－１,（Ｃｏ＾２＋）３０ｇ．１＾－１,具有较强的氧化２Ｆｅ＾２＋的能力     

方波伏安法同时测定U_3O_8中Cu、Ph、Zn、Cd、Fe、Co、Ni、Mn

Ｕ３Ｏ８试样用硝酸分解后，用ＴＢＰ－ＣＣｌ４溶液萃取分离铀，水相用ＨＣｌＯ４蒸干，残渣溶于０．０５ｍｏｌ／Ｌ的ＨＣｌＯ４和０．０３ｍｏｌ／Ｌ的酒石酸混合底液中，用方波阳极溶出伏安法测定Ｃｕ、Ｐｂ、Ｚｎ、Ｃｄ，然后用氨水调节ｐＨ为９．５，用方波极谱法测定Ｆｅ、Ｍｎ，最后加入２０μＬ丁二酮肟用络合物吸附波催化方波极谱法测定Ｎｉ、Ｃｏ．标样测定结果接近给出的中位值，精密度高．变异系数在２．１％－９．７％之间。     

离子交换净化除铅

用三辛胺（代号Ｎ＿（２３５））萃取净化氯化浸出镍溶液的工艺流程中，Ｎ＿（２３５）只能净化除Ｆｅ、Ｃｏ、Ｃｎ、Ｚｎ，萃余液中尚含有不合格的铅。本文研究了用离子交换深度除铅的过程，选用国产环氧型弱碱性阴离子交换树脂（代号７０１），进行了吸附、再生、树脂工作交换容量测定及半工业试验净。化后氯化镍溶液含铅＜０．０００２ｇ／Ｌ，可以满足生产１￣＃电解镍新液要求。     

氨性溶液中铜镍钴的萃取分离

采用PT5050萃取剂，分离和富集镍矿氨液中的铜、镍、钴。采用2级萃取，溶液中铜、镍的萃取率可达99．5％以上，钴不被萃取，经3级低酸选择性反萃镍，镍的反萃率达99％以上，镍反萃液中铜含量小于0．001g/L，满足电镍生产要求。有机相经高酸（180g/L H2SO4)反萃铜，铜反萃液生产电铜或结晶硫酸铜。用硫化钠沉淀萃余液中的钴，钴的沉淀率大于96％，所得到的钴硫精矿含钴大于40％。     

高冰镍浸出液萃取净化流程

本文用一种新的磷类萃取剂５７０９对高冰镍硫酸选择性浸出液中的镍和钴、铜、铁、铅、锌等萃取性能进行了研究，确定了萃取净化分离的工艺条件。水相料液经过萃取后，萃余液达到１号电镍新液标准，镍收率大于９９％；负载钴等金属的有机相先用低酸反萃钴、铜、锌、铅镍后，再用３ｍｏｌ／Ｌ硫酸反萃除铁；除去金属后的有机相再用ＮａＯＨ溶液皂化复用。有机相在１０台φ２０ｍｍ离心萃取器组成的萃取回路试验中复用了７４次，证明性能稳定。     

5709对镍钴及其它杂质的溶剂萃取

本文叙述了５７０９对镍钴及其他杂质阳离子的溶剂萃取行为，研究了平衡水相ｐＨ值、５７０９浓度以及温度对阳离子分配系数的影响，特别研究了平衡水相ｐＨ值以及５７０９浓度对钴／镍分离系数的影响。结果表明，可以推荐的萃取参数有平衡水相ＰＨ＝５．１，５７０９浓度为１０％煤油溶液，萃取温度为５０～５５℃。本文还对钴／镍以及高铁的反萃取进行了研究。推荐两步反萃，即先以０．５ｍｏｌ／Ｌ　Ｈ＿２ＳＯ＿４反萃钴镍，接着以０．５ｍｏｌ／Ｌ　Ｈ＿２Ｃ＿２Ｏ＿４反萃取Ｆｅ￣（３＋）。     

Market and recycling of NiMH battery

<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH     

China rare earth market review

正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to     

Current situation and future trend of China rare earth luminescent material industry

<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth     

China rare earth market review

正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products     

2014 second batch of rare earth quota released

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Annual Report analysis of Chinese rare earth-related listed companies in 2013

<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy     

Market opportunities and challenges for rare earth polishing powder

正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared     

China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.