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－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     

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。     

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。     

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 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     

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.     

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.     

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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