油井射孔技术的现状与展望

射孔作业是石油钻井行业中完井施工部分的关键环节之一，射孔作业在提高油气井的油气产量方面发挥着重要作用，通过近几十年从业者的不断努力研究，射孔技术取得了长足的进步。这些新技术的研究与应用提高了射孔作业效率、增加了单井产能，保护了油藏，提高了油田的开采寿命。重点介绍了深穿透聚能射孔技术、复合射孔技术、定向射孔技术和欠平衡射孔技术的研究现状，并对油井射孔技术的未来发展进行了展望。     

淮南矿区现代采矿关键技术

为实现高瓦斯矿井安全高效开采，根据淮南矿区的实际情况，研究了高瓦斯煤层群煤与瓦斯共采技术及通风方式、开采程序技术原则、安全高效采煤技术，探索实践了瓦斯综合利用、环境治理、矿井降温技术等绿色开采技术.确定了关键技术参数，全面考察了现场应用效果.根据研究结果，确立了现代采矿的基本内涵.     

复杂地质条件矿区瓦斯综合治理技术体系研究

为解决复杂地质条件矿区瓦斯综合治理技术难题，针对淮南矿区实际，通过理论研究和工程实践，研究了复杂地质条件下的煤与瓦斯共采技术体系和瓦斯治理工程保障技术体系，包括岩巷快速掘进技术、围岩控制与巷道支护工程技术体系和瓦斯地质保障技术，形成了复杂地质条件矿区瓦斯综合治理技术体系。研究结果表明，应用这些技术成果，能够显著提高矿区安全和经济效益。     

我国天然铀纯化技术研究的发展与现状

对我国天然铀纯化技术研究作了全面的回顾，对不同历史时期的研究情况作了概述。研究表明，９０年代中期我国已能从粗黄饼开始，经溶剂萃取过程直接制备出核电级硝酸铀酰溶液，标志着我国铀纯化技术水平达到了一个新的水平。随着我国铀纯化技术研究水平的不断提高，我国的铀纯化工艺将步入世界同类技术的先进水平。     

矿用锚杆回收技术的研究与实践

尽管校直技术已广泛应用于锚杆回收中，但由于校直技术不完善，严重影响了锚杆的回收利用。经过详细周密的调研，对当前使用的各种锚杆校直技术作了深入地研究、比较，吸取了其技术的优点和长处，抛弃了它们的不足，提出了新的锚杆校直技术，为锚杆回收技术的进一步发展提供了参考价值。     

孔底起爆技术国内试用现状及推广前景

介绍了程潮铁矿试验推广孔底起爆技术的情况及面临的共性问题，以及国内其它研究部门及矿山企业在该技术研究方面的最新进展，总结了应用该技术的三大优点，并对推广该技术前景作了展望。     

磁流体分选技术用于生产洁净煤探讨

６０年代初，世界上许多国家对磁流体分选技术的理论、工艺和设备进行了大量研究，７０年代中期，我国也进入工业应用方面的研究。本文主要论述了磁流体分选技术的基本原理，生产洁净煤的重要性以及用此分选技术生产洁净煤的可行性。     

磨擦静电选制备超低灰煤的研究

文中介绍了摩擦静电送煤的技术原理和路径，并利用这一技术研究了优质洁净煤的制备，分析了诸因素对分选结果的影响，指出了今后的研究重点和应用前景。     

采空区煤矸石浆体充填技术研究进展与展望

煤矸石浆体充填是一种低干扰条件下矸石无害化规模处置的重要技术手段，是实现煤炭绿色开采的重要途径之一，符合国家绿色发展理念。但针对浆体充填材料制备缓存、浆体长距离输送及采空区充填处置等方面的研究仍不完善，部分问题的研究尚属空白，严重制约浆体充填技术在煤矸石固废处置领域的发展。通过近年来研究，煤矸石浆体充填在基础理论及关键技术均取得了大量的成果。文章系统性地梳理了多种煤矸石充填固废处置技术及其发展历程，总结了其适用性及优缺点，阐述了浆体充填诞生的技术背景及科学内涵，明确了浆体充填关键技术与工艺原理。从大规模推广应用角度出发，总结了浆体材料精准制备与流变特性、矸石浆体长距离管输特征、采空区空隙空间浆体介入规律3项关键科学问题，围绕以上关键科学问题，重点开展了精准制浆技术、管道输送技术、浆体多位充填技术等方面的研究。分析了多因素耦合条件矸石浆体流变特性，揭示了矸石浆体成浆机理，构建了矸石浆体精准制备模型，提出了矸石浆体管道输送关键参数确定方法，总结了高位、低位、邻位3种形式的浆体流动扩散规律，进而指导浆体充填工程实践。在以上研究基础上，分析了浆体充填技术当前研究的不足及未来研究的重点难度，并对...     

煤矿抽放瓦斯技术现状及展望

回顾了煤矿抽放瓦斯技术的发展历程和常用抽放方法，指出我国煤矿抽放瓦斯技术方面存在的问题，展望了抽放瓦斯技术的研究和发展方向，并指出了应用着重研究的抽放瓦斯技术方法和领域。     

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     

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     

2014 second batch of rare earth quota released

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矿用防爆轴流对旋主要通风机叶片ANSYS模态分析及应用

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。     

2013 NdFeB export analysis

<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