N235—环烷酸萃取分离稀土中的铁

为制备高纯稀土,降低非稀土杂质铁含量,对添加环烷酸的Ｎ２３５萃取分离铁进行了实验研究。Ｆｅ（Ⅲ）的萃取率随有机相Ｎ２３５浓度增加、环烷酸添加量减少及水相酸度增加而增加。添加少量环烷酸的Ｎ２３５萃取剂基本不萃取料液中的稀土,但料液中稀土的存在有助于铁萃取。经过７级逆流萃取实验,ＲＥＯ中的Ｆｅ２Ｏ３由０．５８％降到１０＾－６。     

P204—H2SO4体系中萃取富集铪的研究

介绍了用酸性萃取剂Ｐ２０４在Ｈ２ＳＯ４溶液介质中对锆铪萃取分离性能的研究。以Ｎ２３５－Ｈ２ＳＯ４体系萃取分离锆铪制备原子能级氧化锆流程中锆萃余液为料液，研究了Ｐ２０４浓度，平衡时间，洗涤液酸度及草酸浓度对锆铪在有机相中分配比的影响，确定了在Ｐ２０４－Ｈ２ＳＯ４体系中锆铪分离以富集铪的工艺条件。     

用叔胺萃取铀分离钍及稀土的研究

对独居石苛性钠浸出，盐酸优溶产生的优溶渣的硫酸浸出液，用叔胺Ｎ２３５萃取铀分离钍及稀土进行了研究。结果表明：铀的萃取率大于９９．５％，反铀液中ＴｈＯ＿２／Ｕ为（１．８～３．８）×１０￣（－３），ＲＥ＿ｘＯ＿ｙ／Ｕ为（１．０～１．６）１０￣（－３），萃铀余液中的Ｕ／ＴｈＯ＿２仅为（３．５～５．６）×１０￣（－５）。     

新铜萃取剂萃取盐酸介质中铜的实验研究

采用新铜萃取剂N902对盐酸介质中铜的萃取进行了研究。考察了萃取剂、氢离子、氯离子、铜离子浓度及萃取时间的变化对铜萃取率的影响。结果表明,随着氢离子、氯离子浓度的增加,铜萃取率下降。当铜的浓度达8.5 g.L-1时,用30%的N902萃取盐酸介质中的铜,萃取率可达98.96%。并对不同酸性介质中铜的萃取率进行了比较,发现在硫酸介质中铜的萃取率相对较高。用4 mol.L-1硫酸反萃负载铜有机相,单级反萃率可达86%以上。初步探讨了其萃取机制,用等摩尔系列法确定萃合物的组成为CuR2。     

溶剂萃取法从含铁硫酸铝溶液中除铁的工艺研究

本文叙述了用Ｎ２３５－９３０１混合萃取剂从含铁硫酸铝溶液中萃取分离铁的工艺研究结果。含铁硫酸铝溶液（Ａｌ２Ｏ３／Ｆｅ２Ｏ３＝１５．７％／≯０．５％）经Ｈ２Ｏ２氧化后，用Ｎ２３５－９３０１－磺化煤油溶液进行萃取可得合格的硫酸铝产品液（Ａｌ２Ｏ３／Ｆｅ２Ｏ３＝１５．７％／＜５０ｐｐｍ）。萃取操作可在常温（２５±５℃）、常压下进行。萃取后的载铁有机相经酸反萃取、水洗和碱洗后返回萃取系统使用。     

丁基苯并噻唑亚砜萃取钯(II)的性能研究

用丁基苯并噻唑亚砜(用M表示)作萃取剂,在盐酸介质中对钯萃取性能进行研究,结果表明:以无臭煤油作稀释剂、M的浓度20%、盐酸浓度1.0mol/L、相比O/A=0.6、萃取时间10min时,钯的萃取率高于96.0%。浓度为60%的M对钯的萃取容量大于11g/L,说明M对钯萃取性能良好。在室温下,用8.0mol/LNH3.H2O可有效地反萃取钯,反萃取率可达到94.6%。     

丁基苯并噻唑亚砜萃取钯(Ⅱ)的性能研究

用丁基苯并噻唑亚砜(用M表示)作萃取剂,在盐酸介质中对钯萃取性能进行研究,结果表明以无臭煤油作稀释剂、M的浓度20%、盐酸浓度1.0mol/L、相比O/A=0.6、萃取时间10min时,钯的萃取率高于96.0%.浓度为60%的M对钯的萃取容量大于11g/L,说明M对钯萃取性能良好.在室温下,用8.0mol/L NH3·H2O可有效地反萃取钯,反萃取率可达到94.6%.     

丁基苯并噻唑亚砜与MSO协同萃取钯的研究

用丁基苯并噻唑亚砜（用M表示）、MSO作萃取剂,在盐酸介质中萃取钯.结果表明：用煤油作稀释剂,M与MSO组成的体系对钯有较好的协萃能力.本文考察了协萃剂浓度、水相中盐酸浓度、萃取时间、相比对钯萃取率的影响,测定了钯的饱和容量.本文还考察了氨水、KSCN反萃钯的性能.     

酸性含磷萃取剂萃铟机理及性能规律研究

利用斜率法、连续变量法研究了四种酸性含磷萃取剂从稀硫酸溶液中萃取铟的机理，结果表明存在两种萃取机理。测定了各萃取剂萃铟平衡常数、萃合物稳定常数、萃取平衡时间及不同硫酸浓度下的反萃率，在此基础上讨论了萃取剂结构对萃取性能递变规律的影响。     

新型萃取剂CA-12 萃取镓(Ⅲ)的研究

研究了新型萃取剂 CA-12 在盐酸体系中萃取镓(Ⅲ)的最佳萃取条件和性能,考察了各种条件对萃取的影响.用斜率法、等摩尔系列法及饱和容量法确定了萃合物的组成为 GaA3*HA.利用红外光谱考察了萃合物的成键特征,并提出了酸性条件下的萃取反应方程式.     

China's Major Non-ferrous Metals Imports & Exports

正~~     

Zinc Production by Province in 2014

正~~     

80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.     

Seven Rare Earth Projects Involving Close to 3 Billion Yuan Investment Landed In the HighTech Zone

正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully.