P292与Alamine336协同萃取稀土元素的研究

进行了P292与Alamine336所构成混合萃取剂用于萃取稀土试验。结果表明,两种萃取剂混合萃取稀土元素具有正协同作用,当两者按照体积比2∶3进行混合,在相比4∶1,萃取时间3min的条件下达到了较高的萃取率。对萃取稀土后的负载有机相用1.5mol/L的盐酸能够将稀土完全反萃,反萃后的有机相与等体积的中性水混合3次后,有机相得到了充分的再生。该试验具有较好的重复性和循环性。     

新型萃取剂NA萃取中重混合稀土的研究

研究了一种新型酸性磷类萃取剂NA萃取中重混合稀土的性能,探讨了萃取过程中有机相的皂化度、有机相组成、混合稀土料液中杂质含量、料液初始p H对新型萃取剂萃取饱和容量的影响以及反萃过程中反萃酸度对反萃性能的影响,同时还探讨了新型萃取剂的损耗率。试验结果表明,控制混合稀土料液浓度与铝浓度比≥222,与铁浓度比≥2543、有机相的皂化度0.64~0.68 mol·L~(-1)、有机相中磺化煤油∶新型萃取剂=1∶1(新型萃取剂浓度为1.45 mol·L~(-1))及混合稀土料液初始p H=1.2的工艺条件下,萃取过程分相效果好,新型萃取剂的饱和容量大于0.20 mol·L~(-1),比传统萃取剂P507的最佳萃取饱和容量高15%~20%左右,新型萃取剂的损耗率为0.42%~0.45%;反萃过程,采用盐酸作为反萃剂,只要控制盐酸浓度为3.0 mol·L~(-1)时,负载有机相的单级反萃率即可达到98%以上;研究结果表明,该新型萃取剂,具有萃取饱和容量大、溶解损失少、循环使用性能好、反萃酸度低的特点,可以大大降低槽体有机积存量、稀土积存量和酸耗量,减少投资成本,改善工作环境,具有广泛的应用前景。     

铜萃取剂中不同醛肟与酮肟比例对铜萃取性能 的影响

研究了铜萃取剂中不同醛肟与酮肟比例对铜萃取性能指标的影响,考察了萃取相比、浸液pH等对三种不同醛肟与酮肟比例新有机相萃取性能的影响,以及降解产物对有机相萃取性能的影响,开展了新有机相与某铜湿法冶炼厂运行有机相的混合试验。结果表明,不同醛肟与酮肟比例有机相对铜的萃取性能影响差异较大,其中醛肟/酮肟=7/3新有机相具有最优萃取性能,反萃性能最弱;醛肟/酮肟=6.5/3.5新有机相萃取与反萃性能次之;醛肟/酮肟=6/4新有机相的反萃性能最优,萃取性能最弱;受运行有机相中降解产物改制的影响,三种有机相与运行有机相按体积比3︰1构成混合有机相反萃性能均获得了提升,其中以醛肟/酮肟=6.5/3.5混合有机相兼具良好萃取与反萃性能,各条件下铜净传递量最优,更适用于某铜湿法冶炼厂生产运行。研究结果为铜湿法冶炼行业萃取工艺优化与适宜萃取剂选择给出了方向与参考。     

粗硫酸镍溶液直接萃取镍的工艺研究

使用新型萃取剂HBL110从粗硫酸镍溶液中直接萃取镍。结果表明,萃取的较优条件为：萃取剂皂化率60%、萃取相比VO︰VA=2︰1、料液起始pH=2.2、萃取时间5 min,经5级逆流萃取,镍萃取率为98.63%,铁、钴、锌、钙、镁的萃取分别为10.41%、22.86%、8.42%、1.75%、1.38%。有机相经酸洗后反萃,反萃的较优条件为：反萃剂H2SO4浓度1.0 mol/L、反萃相比VO︰VA=4︰1、反萃时间5 min,该条件下进行4级逆流反萃,镍的反萃率为98.85%,反萃液镍浓度为31.11 g/L,且反萃液杂质含量低。     

P_(204)萃取含铜酸性废水中铁的研究

本文采用P204萃取剂对湿法炼铜酸性废水中的铁进行了萃取反萃研究。研究了混合时间、P204体积浓度和相比对萃取铁的影响,同时检测了萃取过程中水相硫酸浓度的变化。针对本试验研究的原料液,采用50%P204在相比(O/A)为9/1时进行萃取,Fe3+的萃取率达到85.96%。采用6N盐酸溶液对负载Fe3+的50%P204有机相进行反萃,当反萃相比(O/A)达到1∶9时,Fe3+的反萃率达到77.44%。     

废旧镍氢电池酸浸液中稀土的萃取研究

采用溶剂萃取的方法,对从废旧镍氢电池酸浸液中选择性提取稀土进行了探索。实验探索出合适的萃取体系,研究了料液初始pH值、萃取温度、混合强度、萃取时间、萃取相比等因素对萃取效果的影响,考察了反萃剂组成、浓度、反萃相比等因素对反萃效果的影响,并测出稀土的萃取等温线。在此基础上进行了工厂扩大试验,结果表明:经5级逆流萃取,稀土的萃取率可达99.99%。混合反萃液经草酸沉淀,得到的稀土纯度为98.49%,杂质金属含量均小于0.05%。所选萃取有机相对稀土有良好的选择性,可实现稀土与其他元素的分离。     

从铅冰铜氧化焙烧产物酸浸液中溶剂萃取铜

研究了用ZJ988萃取剂从铅冰铜氧化焙烧产物的硫酸浸出液中萃取铜,考察了萃原液酸度、有机相组成、相比、混合时间、萃取级数对铜萃取率的影响,以及硫酸浓度、反萃取相比对铜反萃取率的影响。试验结果表明:萃原液酸度对铜萃取率影响明显;在常温、有机相ZJ988体积分数40%、萃原液pH=1.0、相比VO/VA=4/1、混合时间5min、7级萃取条件下,铜萃取率达98.11%;对负载有机相用硫酸溶液反萃取,在硫酸质量浓度240g/L、相比VO/VA=8/1、混合时间3min、2级反萃取条件下,铜反萃取率达94.07%,回收效果较好。     

氯盐体系铟萃取富集试验

针对氯盐体系铟的萃取进行萃取体系、酸度、萃取剂浓度、相比和时间条件试验,对反萃过程中关键影响因素盐酸浓度进行试验。最佳萃取工艺参数为:有机相30%P204、相比(O/A)=1/3、皂化率60%、初始水相pH=0.5、室温混合5min;铟一级萃取率能够达到97.01%,三级逆流萃取能够稳定达到99.5%。反萃工艺参数为相比10/1、盐酸浓度3mol/L、室温混合5min,一级反萃率75.52%,三级反萃率达到100%。经萃取、洗涤、反萃后,铟回收率达到96.8%。     

用LIX84从富钴结壳硫酸浸出液中选择性萃取铜

采用LIX84作萃取剂、硫酸作反萃剂 ,从大洋富钴结壳常温常压活化硫酸浸出除铁后液中萃取铜。试验考察了相比、平衡水相pH值、时间等因素对LIX84萃铜的影响。结果表明 ,相比、平衡水相 pH值、混合时间都对铜的萃取率有一定影响。最后优化出的萃取工艺条件为 (体积百分数 )有机相 12 %LIX84+ 88%煤油 ,室温 ,相比 (O/A)=1/ 2 0 ,出口水相pH2 60± 0 0 5 ,萃取级数为 2级 ,每级混合时间 5min。经过 2级萃取、1级洗涤、3级反萃后 ,可以得到完全符合电解沉积要求的硫酸铜溶液 ,从而使浸出液中的铜与其它金属彻底分离     

一种稀土有机萃取剂及其反萃工艺

<正>本发明公开了一种稀土有机萃取剂及其反萃工艺。该有机萃取剂中含环己烷的体积分数为20%~35%,液氨皂化萃取剂的体积分数为15%~45%,N235的体积分数为15%~35%,磺化煤油的体积分数为20%~40%;其中,液氨皂化萃取剂为P507、P204中的一种。反萃工艺包括萃取制备含不     

Acceleration of Electricity Reform Brings Benefit to Big Electricity Users,Aluminum Manufacturers Can Save Costs Up to Several Hundred Million

<正>Recently the National Commission of Development and Reform again assembled experts to solicit opinions,and discussed new electricity reform program.According to information disclosed by experts attending the meeting,in the future electricity reform will undergo top-down design,possibly a     

Qinghai's Aluminum Processing Capacity to Rise at the End of the Year

正Since the release of Implementation Opinions on Carrying out‘Guiding Opinions of the State Council on Resolving Serious Production Overcapacity Conflicts’,according to the actual situation of industry,Qinghai has focused on electrolytic aluminum,cement,ironsteel(including iron alloy and silicon carbide),     

Recent Trends in China's Copper Scrap Market-Part Ⅱ

<正>2.Tianjin Scrap Metal Market In Tianjin,we mainly visited Jinghai Ziy Town scrap market and Binhai New Area’some copper scrap enterprises and enterprise using copper scrap.In Ziya we felt the coppe scrap market was particularly deserted,mos copper scrap enterprises in the town wer closed,industry insiders said in 2012 the plac here was bustling with activity.According to     

Shanghai Clearing House to Roll out Renminbi-denominated Copper Clearing Operations in Free Trade Zone

正Clearing House Financial Markets Co.,Ltd.(Shanghai Clearing House)General Manager Xie Zhong told the media recently at the briefing of the international symposium of"Reform Deepening and Mechanism Innovation of the Post-crisis Kerb Market",Shanghai Clearing House will explore the feasibility of carrying out bond business in     

Development and Application of New Materials for Copper Processing in China

正After over 60 years of developmnt,a system for RD and production of copper processing materials has already taken shape in China.After the reform and opening-up,the application of copper processing materials has gradually expanded from the military industry to civil field.The annual output of copper     

China’s Mineral Exploration Market Downturn Causes Decline of Investment in Bauxite

<正>According to a survey report conducted recently by China Geological Survey Development Research Center,in the first half of 2014,China’s mineral exploration market continued to decline,with the investment in exploration of non-fuel minerals dropping by13.7%and drilling workload dropping by21.7%.According to statistical analysis of the Center,     

Fabricated Copper Production by Province or City in 2014

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Zinc Production by Province in 2014

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China's Aluminum Alloy Cable Market has Taken Shape

正Aluminum alloy cable is a mature product and technology that has been used for nearly fifty years in the U.S.Through six years’promotion,it has been widely recognized and accepted in the China market since 2013,which laid the foundation for the development of the aluminum alloy cable market.Aluminum alloy cable is widely applied in the fields of civil construction and industrial and mining enterprises,especially in real estate,steel and metallurgy.     

Qinghai to Build a 100 Billion Yuan Lithium Industry Base

正At 2014 China Qinghai Trade Fair for Green Development Investment,Qinghai EV Rally2014 was introduced for the first time.With electrical vehicles’eco-friendly features,Qinghai manifested its determination on green development.Introducing Qinghai EV Rally was just a signal.By leveraging its rich salt lake resources