铀矿细菌堆浸的生物接触氧化槽

介绍了铀矿细菌堆浸的生物接触氧化槽的结构特点和填料特性，总结了生物接触氧化槽系统设计计算方法，鼓风曝气系统配置原则和运行管理措施。     

紫金山铜矿微生物浸出工艺研究

采用细菌堆浸工艺处理紫金山铜矿矿石,铜浸出率可以达到80%以上,在浸矿菌种的选育、堆浸工程技术、浸出系统pH值、堆内氧浓度、堆内温度、气温对细菌活性的影响以及有害物质的控制技术等方面均取得了重要进展.     

德兴铜矿堆浸厂的生产实践及技术研究

结合德兴铜矿堆浸厂的生产及研究情况，分析了细菌浸出－萃取－电积工艺过程中存在的问题并提出了解决方法，探讨了该工艺应用研究的发展方向与前景。     

硫化矿生物氧化堆浸过程中有毒因素的消除

硫化矿生物氧化堆浸过程中有毒因素的消除ＲｕｓｉｎＰ·等人在《ＭｉｎｉｎｇＥｎｇｉｎｅｅｒｉｎｇ》１９９５年２月号上发表文章，对硫化物贫矿的细菌堆浸的有毒因素及其消除方法作了述评。通过监测细菌数目、堆浸液ＰＨ和电位及铁的氧化速率来评估细菌中毒状况，测定...     

国外强化金矿堆浸技术的最新进展

本文对国外金矿堆浸所采取的强化浸出措施，包括制粒和喷淋方法的改造、细菌强化堆浸、氧气强化浸出、化学试剂强化浸出等，进行了系统的综述，以期对国内黄金堆浸技术和工艺的完善有所裨益。     

江铜低品位原生硫化矿细菌浸出技术有突破

江铜集团永平铜矿低品位原生硫化矿细菌浸出半工业试验取得了突破性的进展，为下一阶段进行的堆浸产业化工程设计提供了可靠依据。该矿的矿石中存在大量的低于露采工业品位的原生硫化矿，为有效利用此矿石，进一步加快堆浸产业化进程，该矿联合有关科研单位对堆浸产业化进行了可行性研究，并从2004年7月开始进行5000t级低品位原生硫化矿细菌浸出半工业试验。试验场地设在西部排土场，采用细菌浸出的新方法，通过跟踪检测、及时统计、科学分析等，获得了可靠的数据资料。     

赣州铀矿草桃背分矿细菌堆浸工业试验

介绍了草桃背分矿细菌堆浸工业试验结果，并对筑堆、喷淋布液系统的安装、生物氧化槽运行管理作了概述。通过85d淋浸试验，回收铀6859kg，液计浸出率92．95％，渣计浸出率91．88％，酸耗2．1％，总液固体积质量比2．9m^2／t。和常规堆浸比较，浸出周期缩短约75d，酸耗节省0．35％，铀浸出率提高2％。试验结果为该铀矿提供了最佳可行的技改方案。     

赣州铀矿草桃背矿石细菌堆浸试验研究

介绍了草桃背铀矿细菌堆浸试验的结果,与常规堆浸相比,细菌堆周期缩短约50％,浸出率提高10％,酸耗相应降低。该结果为草桃背矿石堆浸提出了一种可选择的技术改造方案。     

通过细菌氧化作用提取金属

在该文中介绍了关于细菌的知识，阐述了细菌在硫化物矿物被氧化过程中的催化作用，以及通过这种催化作用达到以工业规模从矿石中提取金属的5种方法：在搅拌反应器中浸出、堆浸、槽浸、废弃矿石堆浸和原地浸出。在该文中重点讨论了搅拌反应器浸出中的4种方法和堆浸中的2种方法。讨论这些方法都是结合实例进行的。     

难浸金矿生物堆浸研究

通过实验室柱浸和工业试验，研究难浸金矿的生物堆浸过程。3种不同类型难浸矿石的现场生物堆浸，金浸出率分别提高了41．00％，23．75％和24．53％。金被非金属包裹、碱性矿石、含粘土类矿物过高以及含硫化矿物过低的4种类型难浸矿石，生物堆浸还存在一定的难度。     

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     

Annual Report analysis of Chinese rare earth-related listed companies in 2013

<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy     

Market opportunities and challenges for rare earth polishing powder

正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared