高纯无水三氯化铟制备关键技术与提纯方法

将常压蒸馏、减压蒸馏、溶剂纯化几种常规工艺联合,解决高纯无水三氯化铟制备中脱水、提纯等技术难题,最终确定了制备高纯无水三氯化铟的最佳优化参数:投料比(BUOH/结晶水)为35∶1、常压蒸馏温度125℃、分解温度230℃、分解时间1 h。真空升华提纯后可得到高纯无水三氯化铟,产率≥95%,纯度99. 999%以上。     

电解精炼—区域熔炼法制备高纯铟的实验研究

本文联合电解精炼与区域熔炼法,制得99.9999%的高纯铟。通过实验探讨了电解精炼的原理,并分析了区域速度、区域次数对铟纯化的影响。实验表明：粗铟通过电解精炼可以制得99.999%的高纯铟,再经区域速度为20mm/h,区熔次数为8次的区域熔炼可以获得99.9999%以上的高纯铟。     

电解精炼—区域熔炼法制备高纯铟试验研究

联合电解精炼与区域熔炼法,制得99.9999%的高纯铟。通过试验探讨了电解精炼的原理,并分析了区域速度、区域次数对铟纯化的影响。试验表明,粗铟通过电解精炼可以制得99.999%的高纯铟,再经区域速度为20 mm/h,区熔次数为8次的区域熔炼可以获得99.9999%以上的高纯铟。     

高纯铟电解精炼提纯方法的研究

本文研究了铟电解精炼提纯的方法及工艺。设计了以铟离子浓度、NaCl浓度、电解液pH值以及电流密度为实验因素的L9(3,4)正交实验,以期能够获得铟电解精炼较优工艺参数。结果显示,当铟离子浓度为70 g/L、NaCl浓度为60 g/L、电解液pH为1.5、电流密度为65 A/m2时,样品的电解精炼效果最好,铟的主含量达到99.9998%以上,其他杂质达到5N高纯铟YS/T 264—2012的标准。     

EDTA滴定法中酒石酸钾钠用量对铟分析的影响

为防止铟水解和保证EDTA滴定法能在酸性条件下进行滴定 ,分析铟靶材废料盐酸浸出液时酒石酸钾钠用量对铟含量测定的影响。试验表明 ,酒石酸钾钠用量过多或过少都会导致分析结果偏低。在铟含量为 (5～5 7) g/L范围内 ,加入 30 %酒石酸钾钠溶液 10mL ,在pH值为 2 .5时 ,可防止分析过程中铟的水解和酒石酸盐的沉淀析出 ,分析误差小于± 0 .1%。     

甘油碘化钾-电解联合法粗铟提纯研究

采用甘油碘化钾方法有效地除去了粗铟中电位和In 相近的Cd、Tl 杂质, 确定合适的物料配比为m_铟∶m_甘油∶m_碘化钾=1∶0. 3∶0. 06, 按此配方进行试验, 除Cd 率可达98. 6%、除Tl 率可达60. 3%。将所得铟铸成阳极, 在合适的工艺条件下进行电解精炼, 可得到纯度为99. 96 %的一次电解铟, 经过二次电解后铟的纯度可达到99. 995 %。     

烧结温度对Nb2O5-x靶材性能的影响

采用真空烧结法制备Nb_2O_(5-x)靶材,研究了烧结温度对靶材的相结构、脱氧率、密度以及电阻率的影响.控制靶材的真空烧结温度,可以制备出综合性能优良的Nb_2O_(5-x)靶材.实验结果表明:在真空烧结温度为1200℃时,靶材的非化学计量比为Nb_2O_(4.59),其各项性能指标最佳:靶材的电阻率2.32mΩ·cm、密度4.85g/cm~3、脱氧量2.47%.     

电解精炼制备高纯铟的电化学行为研究

考察了铟电解精炼中铟离子浓度以及氯化钠浓度对铟电解的电化学行为影响,并运用X射线衍射(XRD)、X射线能谱仪(EDS)分析了阳极异常产物。结果表明,当铟离子浓度为70 ～80 g/L、NaCl浓度为100 g/L、电解液pH值为2～2.5、电流密度为55 A/m~2时,经辉光放电质谱(GD-MS)检测分析得铟的主含量达到99.9997%以上,各杂质均达到5N高纯铟YS/T 264-2012的标准。当铟离子浓度大于100 g/L时,阳极铟在溶解时有少量以In+的形式进入溶液,在阳极板上发生歧化反应生成黑色海绵铟;同时阳极板上析出的白色物质主要为InOHSO_4 (H_2O)_2,由于In~(3+)浓度过高水解沉淀析出,使电解液条件恶化阴极产品质量不达标。     

含铟锌渣氧粉加压氧化浸铟的工艺研究

研究了含铟锌渣氧粉在加压和加入氧化剂的条件下与工业硫酸反应时硫酸初浓度、浸出时间、反应温度、氧化剂用量等工艺条件对铟浸出效果的影响。研究结果表明,加压和加入氧化剂高锰酸钾对锌渣氧粉的浸出有较好的强化作用,能明显提高铟浸出率。其最佳工艺条件：硫酸初浓度为400 g/L,反应时间为120 min,反应温度为120 ℃,高锰酸钾用量为矿样量的4%,液固比为8,反应压强为0.5 MPa,搅拌器转速为400 r/min。在此条件下,锌渣氧粉的铟浸出率可达到90.6%。     

锌冶炼铜烟灰中铟氧化浸出研究

以锌冶炼过程中的铜烟灰为原料,研究了硫酸浸出含铟铜烟灰过程中硫酸浓度、硫酸用量、浸出温度、浸出时间、氧化剂高锰酸钾用量等因素对铟浸出效果的影响。结果表明,当硫酸浓度300 g/L、液固比6 mL/g、反应温度90 ℃、反应时间5 h、高锰酸钾添加量0.3%时,铜烟灰中铟浸出率为65.73%。     

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     

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。     

New energy vehicle:an opportunity for rare earth magnets

<正>Extracted from Securities Guide 1.Popularity of new energy vehicles—an irresistible market trend1.1 Progress of new energy vehicles Chinese Premier Li Keqiang said recently on a visit to Xi'an BYD Autos that new energy vehicles,especially new energy bus,can lessen environment and noise pollution.He encouraged the use of new