Bi2S3矿浆电解热力学

由Ｂｉ２Ｓ３在ＮａＣｌ溶液中的溶解度，Ｂｉ２Ｓ３－Ｃｌ－Ｈ２Ｏ系的电位－ｐＨ，电位－ｌｇ「Ｃｌ」图分析表明：Ｂｉ２Ｓ３矿在氯盐水溶液中的溶解度有了很大的提高，在矿浆电解时它同时存在三种浸出机理。即 １．化学溶解，Ｂｉ２Ｓ３（Ｓ）＋３ｎＣｌ（ａｑ）＋６Ｈ（ａｑ）＾＋＝２ＢｉＣｌ＾３－ｎｎ（ａｑ）＋３Ｈ２Ｓ＾０（ａｑ） ２．化学氧化。Ｂｉ２（３Ｓ）＋６Ｆｅ＾３＋（ａｑ２）＋２ｎＣｌ＾－（ａｑ）＝６Ｆｅ     

碱性NaCl溶液中铜阳极生成Cu2O的机理

用线性电势扫描法、计时电势法、循环计时电势法、旋转盘－环电极法及稳态极化曲线研究了碱性氯化钠溶液中铜阳极生成Ｃｕ２Ｏ的动力学，实验得到Ｃｕ２Ｏ的生成机理为：Ｃｕ＋Ｃｌ－ＣｕＣｌ－吸ＣｕＣｌ－吸＋（ｎ－１）Ｃｌ－－ｅＣｕＣｌ１－ｎｎＣｕＣｌ１－ｎｎ＋２ＯＨ－Ｃｕ（ＯＨ）－２＋ｎＣｌ－Ｃｕ（ＯＨ）－２１２Ｃｕ２Ｏ＋１２Ｈ２Ｏ＋ＯＨ－第四步为速度控制步骤     

凡口方铅矿—黄铁矿选择性分离机理研究

采用Ｘ－光电子能谱及电化学测试研究了高石灰用量条件下，凡口方铅矿一黄铁矿选择分离的机理。高石灰介质中，黄铁矿表面形成了Ｃａ（ＯＨ）＿２、Ｆｅ（ＯＨ）＿３亲水膜；方铅矿表面形成了ｃａ（ＯＨ）＿２、ＨＰｂＯ－＿２亲水膜，加入高浓度丁基黄药后，方铅矿表面亲水组分向疏水组分Ｐｂ（ＢｕＸ）＿２转化，而黄铁矿表面由于优先氧化仍生成Ｃａ（ＯＨ）＿２、Ｆｅ（ＯＨ）＿３亲水组分，无双黄药生成，造成方铅矿与黄铁矿的选择性分离。而高浓度乙基黄药既不能使方铅矿表面转化成Ｐｂ（ＦＸ）＿２．又不能在黄铁矿表面生成双黄药，不能实现二者的分离。     

凡口方铅矿—黄铁矿选择性分离机理研究

采用Ｘ－光电子能谱及电化学测试研究了高石灰用量条件下，凡口方铅矿－黄铁矿选择分离的机理。高石灰介质中，黄铁矿表面形成了Ｃａ（ＯＨ）２、Ｆｅ（ＯＨ）３亲水膜；方铅矿表面形成了Ｃａ（ＯＨ）２、ＨＰｂＯ－２亲水膜。加入高浓度丁基黄药后，方铅矿表面亲水组分向疏水组分Ｐｂ（ＢｕＸ）２，转化，而黄铁矿表面由于优先氧化仍生成Ｃａ（ＯＨ）、Ｆｅ（ＯＨ）３亲水组分，无双黄药生成，造成方铅矿与黄铁矿的选择性分离。而高     

辉锑矿的活化与浮选特性

研究了用黄药作捕收剂时辉锑矿的浮选特性。辉锑矿的浮选可分为三个区：易浮区（ｐＨ≤５）、活化区（ｐＨ５～１０）和非浮选区（ｐＨ≥１０）。重金属离子对辉锑矿的活化作用为：ＨｇＣｌ＿２＞Ｐｂ（ＮＯ＿３）＿２＞ＣｕＳＯ＿４＞ＺｎＳＯ＿４＞ＦｅＳＯ＿４＞ＦｅＣｌ＿８。Ｐｂ￣（２＋）比Ｃｕ￣（２＋）在辉锑矿表面具有更好的吸附特性，用ＸＰＳ证明ＣｕＳＯ＿４活化辉锑矿的最终产物是Ｃｕ＿２Ｓ。     

矿浆电解法处理铋精矿的研究

本文采用独特的湿法冶金技术──矿浆电解法，在盐酸－三氯化铁一氯盐体系中，就湖南柿竹园铋精矿的处理进行了系统的理论探讨和条件试验研究，提出了相应的浸出机理。浸出过程发现，溶液中适量的铁离子的存在，可以提高浸出速率，提高阳极电流效率。石墨阳极反应主要是铁高子的转换反应，浸出过程主要是辉铋矿与盐酸的分解反应及三价铁和Ｈ２Ｓ的氧化还原反应，阳极浸出过程机理如下：Ｂｉ２Ｓ３＋６ＨＣｌ＋（２ｎ一６）Ｃｌ－＝２ＢｉＣｌｎ（３－ｎ）＋３Ｈ２Ｓ（ｎ＝１￣６）２Ｆｅ３＋＋Ｈ２Ｓ＝２Ｆｅ２＋＋Ｓｏ＋２Ｈ＋Ｆｅ２＋－ｅ＝Ｆｅ３＋阴极发生铋的沉积：Ｂｉｃｌｎ（３－ｎ）－３ｅ＝Ｂｉ＋ｎＣｌ－（ｎ＝１～６）Ｆｅ３＋＋ｅ＝Ｆｅ２＋     

N,N-二辛基甘氨酸萃取钯机理的研究

报道了Ｎ,Ｎ－二辛基甘氨酸从盐酸体系中萃取钯的机理,结果表明：钯的萃取率随酸度、氯离子浓度、钯离子浓度的增大而降低。采用斜率法测得萃合物组成为：Ｒ２ＮＣＨ２ＣＯＯＨ．ＨＨＰｄＣｌ４,其萃取反应式为：Ｒ２ＮＣＨ２ＣＯＯＨ．ＨＣｌ（Ｏ）＋ＨＰｄＣｌ＾－４（Ａ）＝Ｒ２ＮＣＨ２ＣＯＯＨ．ＨＨＰｄＣｌ４（Ｏ）＋Ｃｌ＾－（Ａ）。     

应用微机绘制电位─pH图分析氯氧化铋精矿提纯工艺

应用微机绘制了Ｂｉ，Ｆｅ，Ａｓ，Ｓｂ，Ｐｂ等元素的Ｍｅ－Ｃｌ－Ｈ２Ｏ系和Ｍｅ－ＮＯ３－－Ｈ２Ｏ系的Ｅｈ－ｐＨ图．在对Ｅｈ－ｐＨ图分析的基础上，制定了提纯氯氧化铋精矿，制取药用次硝酸铋的新工艺．     

我国南方某类稀土矿中铝的赋存状态

以改进的连续分级提取方法,分别以去离子水,４％（ＮＨ４）２ＳＯ４水溶液、０．２０ｍｏｌ．Ｌ＾－１ＨＣｌ溶液、０．２０ｍｏｌ．Ｌ＾－１ＮＨ２ＯＨ．ＨＣｌ｜２．０ｍｏｌ．Ｌ＾－１ＨＣｌ溶液,０．３３ｍｏｌ．Ｌ＾－１柠檬酸钠溶液和０．５０ｍｏｌ．Ｌ＾－１ＮａＯＨ溶液为撮取剂,将南方某类稀土矿中可提取的非昌态铝相应区分为：水溶态铝（Ｓｏｌ Ａｌ）。交换态铝（Ｅｘ Ａｌ）,吸 态无机羟基铝（Ｈｙ Ａｌ）导上     

应用微机绘制电—pH图分析氯氧化铋精矿提纯工艺

应用微机绘制了Ｂｉ，Ｆｅ，Ａｓ，Ｓｂ，Ｐｂ等元素的Ｍｅ－Ｃｌ＾－－Ｈ２Ｏ系和Ｍｅ－ＮＯ３＾－－Ｈ２Ｏ系的Ｅｈ－ｐＨ图，在对Ｅｈ－ｐＨ图分析的基础上，制定了提纯氯氧化铋精矿，制取药用次硝酸铋的新工艺。     

稀散金属产业的观察与思考

分析了近年来国内外稀散金属产业的生产、应用、资源与市场状况.铟锡氧化物靶材、砷化镓晶片、锗红外材料、铼高温合金和硒在电解锰及玻璃的应用等已成为稀散金属的主要应用领域.稀散金属的产量快速增长达到历史高位而导致了市场的失衡.以GaInP_2/GaAs/Ge,CIGS和CdTe为代表的非硅系太阳能电池是稀散金属的新兴应用领域,将给稀散金属带来日益增长的需求.     

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.     

Current situation and future trend of China rare earth luminescent materialindustry(continued)

<正>Developing ecological lighting source The world is facing the big problem of energy shortage today and the contradiction between economy development and environmental protection is worsened.Therefore,people are more likely to choose an ecological light source that is more energy efficient and environmental friendly.The choice provides great opportunity for the development of rare earth optical material industry in China.The concept of green lighting positions rare earth luminescent material as a leading player in illumination market.The light source of both rare earth luminescent lamp and LED lamp is ecological and energy saving.This is why     

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.     

Rare Earth Application in Steel in China

<正>China has rich rare earth resources.Output of rare earth and steel in China ranks the top first in the world.However,there is still certain distance between the steel produced in China and developed countries from the point of varieties and quality.China still has to import some types of steel.Improving the quality should be emphasiZed in future development of steel industry in China.Rare earth can be used to upgrade traditional steel     

Brief news

正Corun invested another 50 million yuan in power battery for HEV Hunan Corun announced on 27 June that they had signed the cooperation agreement to jointly built Corun(Shaoxing)Autos Power Battery System Co.,Ltd.in Shaoxing Binhai New City.According to the announcement,total registered     

铜熔炼中锍品位对杂质元素分配行为的影响

借助于多相、多成分系统中平衡计算的手段，开发出微量元素砷、锑、铋及伴生元素铅、锌等在铜熔炼中分配行为的计算机模型。利用该模型对铜熔炼过程进行计算机模拟，分析了冰铜品位对砷、锑、铋、铅和锌等杂质元素的分压、活度系数及它们在冰铜、炉渣和气相中分配率的影响，并讨论其热力学分析结果对生产实践的指导意义。     

China rare earth market review

正November 1~10,2014Chinese rare earth market was still inactive.Demand for rare earth products was weak.Consumers took a wait-and-see attitude for lower price.As it was an off season for rare earth products,it was expected that prices of rare earth could continue turbulence at the bottom in short terms.Due to a sharp drop,demand for rare earth from downstream recovered.Affected by new energy vehicles,wind powder and energy-efficient appliances,production of rare earth permanent     

China rare earth market review

正August 1~10,2014 There was some good news in rare earth industry recently.Restructuring plans of rare earth groups led by Baotou IronSteel Group and Xiamen Tungsten Group respectively have been approved by MIIT.And rare earth storage policy,which had been expected for a very long time,has been launched officially.Pushed by the good news,rare earth price started to rebound since August 5.Price of didymium oxide and dysprosium oxide rose about 1% to 2%,averagely.About 10% of     

China rare earth market review

正July 1~10,2014Due to weak demand from downstream industry and slow transactions,rare earth market remained weak and price of rare earth products continued to decline.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,