三正辛胺从硫酸溶液中萃取铬(Ⅵ)的研究

研究了三正辛胺（TnOA）从硫酸溶液中萃取铬（Ⅵ）．考查了水相酸度、被萃物和萃取剂与SO4-离子浓度、萃取时间及温度等诸因素对萃取铬（Ⅵ）的影响。用饱和法、摩尔比法和等摩尔系列法等联合确定萃合物的组成和萃取平衡的机理．表明萃取过程属阴离子交换机理．揭示了Deptuta等对铬（Ⅵ）的萃取型体的不同结论。     

三正辛胺(TnOA)萃取Cr(Ⅵ)的机理研究

研究了用TnOAnCH3(CH2)6CH3H2SO4体系和TnOACHCl3H2SO4体系萃取Cr(Ⅵ)的机理及萃合物组成.考察了水相酸度,Cr(Ⅵ)、萃取剂与SO2-4浓度,萃取时间及温度等因素对萃取的影响.用饱和法、摩尔比法、等摩尔系列法和IR法确定了萃合物的组成和萃取平衡机理.结果表明,萃取过程属阴离子交换机理,萃合物的组成因pH值和c(Cr(Ⅵ))不同而异;pH值不同,Cr(Ⅵ)的型体也不一样;当c(TnOA)一定,pH=1.0,c(Cr2O2-7)=0.1000mol/L时,形成的萃合物是(R3NH)2Cr2O7(2∶1);当pH=-1.0,c(Cr2O2-7)=0.01945mol*L-1时,形成的萃合物是R3NHHCrO4(1∶1);SO2-4不被萃取,c(TnOA)及时间和温度对Cr(Ⅵ)的萃取影响不大.试验结果与Deptuta认为的Cr(Ⅵ)的型体为Cr2O2-7,Федоров和Жданов认为的Cr(Ⅵ)的萃取型体为CrO2-4的结论不同.     

三正辛胺（TnOA）萃取Cr（Ⅳ）的机理研究

研究了用TnOA-n-CH3(CH2)5CH3-H2SO4体系和TnOA-CHCl3-H2SO4体系萃取Cr（Ⅳ）的机理及萃合物组成。考察了水相酸度,Cr（Ⅳ）、萃取剂与SO4^2-浓度,萃取时间及温度等因素对萃取的影响。用饱和法、摩尔比法、等摩尔系列法和IR法确定了萃合物的组成和萃取平均理。结果表明,萃取过程属阴离子交换机理,萃合物的组成因pH值和c（Cr（Ⅳ））不同而异;pH值不同,Cr（Ⅳ）的型体也不一样;当c（TnOA）GGPG,pH＝1．0,c（Cr2O7^2-）=0．1000mol／L时,形成的萃合物是（R3NH）2Cr2(2：1）;当pH＝－1．0,c（Cr2O7^2-）＝0．01945mol.L^－1时,形成的萃合物是R3NHHCrO3(1:1）;SO4^2-不被萃取;c（TnOA)及时间和温度对Cr（Ⅳ）的萃取影响不大。试验结果与Deptuta认为的Cr（Ⅳ）的型体为为Cr2O7^2-,φeдopoB和ЖдaHOB认为的Cr（Ⅳ）的萃取体为CrO4^2-的结论不同。     

H2SO4介质P5708萃取铟、铁热力学平衡研究

研究了In（Ⅲ）和Fe(Ⅲ)在H2SO4水相（pH0.4-2.0）中存在的主要离子形态,确定了P5708萃取铟（铁）两种机理对应的平衡反应方程式;用热力学方法推导这两个竞争反应相互转化的判别方程式,实验及计算结果表明萃取率低时,SO4^2-参与萃取;考察不同平衡pH、c(H2A2)下两种萃合物在有机相比例,分析表明经串级萃取后含SO4^2-的萃合物约占有机相中萃合物总量的1／3－1／5,含SO4^2-的萃合物难于反萃。     

三正辛胺─CHC_(l3)萃取Cr(Ⅵ)的研究

研究了三正辛胺－ＣＨＣｌ３从Ｈ２ＳＯ４溶液中萃取Ｃｒ（Ⅵ）．考察了各种影响萃取的因素,用多种方法联合确定萃合物的组成和萃取平衡机理,表明萃取过程属阴离子交换机理、揭示了Ｄｅｐｔｕｔａ等对 Ｃｒ（Ⅵ）萃取型体的异论。     

三正辛胺—CHCl3萃取Cr（Ⅵ）的研究

研究了三正辛胺－ＣＨＣｌ３从Ｈ２ＳＯ４溶液中萃取Ｃｒ（Ⅵ）。考察了各种影响萃取的因素,用多种方法联合确定萃合物的组成和萃取平衡机理,表明萃取过程属阴离子交换机理理,提示了Ｄｅｐｔｕｔａ等对Ｃｒ（Ⅵ）萃取型体的异论。     

三正辛胺—CHCl3萃取Cr（Ⅵ）的研究

研究了三正辛胺－ＣＨＣｌ３从Ｈ２ＳＯ４溶液中萃取Ｃｒ（Ⅵ）。考察了各种影响萃取的因素,用多种方法联合确定萃合物的组成和萃取平衡机理,表明萃取过程属阴离子交换机理理,提示了Ｄｅｐｔｕｔａ等对Ｃｒ（Ⅵ）萃取型体的异论。     

H_2SO_4介质P5708萃取铟、铁热力学平衡研究

研究了In(Ⅲ )和Fe(Ⅲ )在H2 SO4 水相 (pH0 4～ 2 0 )中存在的主要离子形态 ,确定了P5 70 8萃取铟 (铁 )两种机理对应的平衡反应方程式 ;用热力学方法推导这两个竞争反应相互转化的判别方程式 ,实验及计算结果表明萃取率低时 ,SO2 -4 参与萃取 ;考察不同平衡 pH、c(H2 A2 )下两种萃合物在有机相比例 ,分析表明经串级萃取后含SO2 -4 的萃合物约占有机相中萃合物总量的 1/ 3～ 1/ 5 ,含SO2 -4 的萃合物难于反萃     

聚乙烯吡咯烷酮─偶氮胂M非有机溶剂液─固萃取体系

聚乙烯吡咯烷酮（ＰＶＰ）水溶液在不同盐存在下可分成聚合物固相和盐水相。研究了分相条件和水溶性螫合剂及金属离子螫合物在该体系两相间的分配行为。用偶氮胂Ｍ作萃取剂，实现了错（Ⅳ）－钪（Ⅲ），铀（Ⅵ）－铁（Ⅲ），铁（Ⅲ）－钪（Ⅲ）的定量萃取分离，探讨了ＰＶＰ相的萃取机理。     

Tween80-(NH4)2SO4-H2O体系萃取镉的研究

研究了在有（NH4）2SO4存在条件下形成液固体系的条件及形成的螯合物在两相间的分配行为，也研究了用Tween80萃取分离镉。结果表明，用Tween80萃取镉，体系中加入（NH4）2SO4、结晶紫和碘化钾，有机相与水相不仅分相较好，而且铬萃取率达到98％以上。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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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.