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1.
铀矿细菌堆浸的生物接触氧化槽   总被引:6,自引:2,他引:4  
孟运生  樊保团  刘建  郑英  刘超 《铀矿冶》2004,23(4):182-186
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。  相似文献   

2.
赣州铀矿草桃背矿石细菌堆浸试验研究   总被引:6,自引:4,他引:2  
刘建  樊保团  孟运生 《铀矿冶》2001,20(3):151-156
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。  相似文献   

3.
德兴铜矿堆浸厂的生产实践及技术研究   总被引:15,自引:2,他引:13  
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。  相似文献   

4.
《铀矿冶》1995,(3)
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...  相似文献   

5.
紫金山铜矿微生物浸出工艺研究   总被引:8,自引:1,他引:7  
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.  相似文献   

6.
国外强化金矿堆浸技术的最新进展   总被引:1,自引:0,他引:1  
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。  相似文献   

7.
关自斌 《铀矿冶》2001,20(1):57-61
结合我国铀矿堆浸实际,在重视堆浸可行性研究、采用强化堆浸技术、改进霍浸装备水平、严格工艺条件及拓宽堆浸的应用范围等方面提出一些有效途径及适用技术,包括采用拌酸熟化高铁淋滤浸出、细菌堆浸、制粒堆浸、逆流堆浸,选用优质底垫层材料,研制大型机械化筑堆方法和设备,推广滴灌式布液,优化堆浸工艺参数,以及开发堆浸相配套的回收设备等,以提高浸出率、缩短堆浸周期,获得更大的经济效益。  相似文献   

8.
关自斌 《铀矿冶》2000,19(4):233-242
结合我国铀矿堆浸实际,在重视堆浸可行性研究、采用强化堆浸技术、改进堆浸装备水平、严格工艺条件及拓宽堆浸的应用范围等方面提出一些有效途径及适用技术,包括采用抖酸熟化-高铁淋滤浸出、细菌堆浸、制粒堆浸、逆流堆浸,选用优质底垫层材料,研制大型机械化筑卸堆方法和设备,推广滴灌式布液,优化堆浸工艺参数,以及开发与堆浸相配套的回收设备等,以提高浸出率、缩短堆浸周期,获得更大的经济效益。  相似文献   

9.
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。  相似文献   

10.
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。  相似文献   

11.
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  相似文献   

12.
<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  相似文献   

13.
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  相似文献   

14.
<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  相似文献   

15.
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  相似文献   

16.
文奇 《中州煤炭》2018,(6):175-178
高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。  相似文献   

17.
<正>China totally exported nearly 24,000 tonsof NdFeB products during 201 3,including 18,825 tons of permanent magnet,valued USD 1.34 billion at an average price of 71.4 USD/kg;3,277 tons of NdFeB magnetic powder,valued USD 1 01 million at an average price of 30.9 USD/kg;1,334 tons of strip casting ribbon,with total export value of USD 74million at an average price of 55.3 USD/kg;and 586  相似文献   

18.
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  相似文献   

19.
<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  相似文献   

20.
<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  相似文献   

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