预应力锚杆体系──锚杆支护技术发展的新阶段

高预应力锚杆体系是锚杆支护技术发展的方向，它可以保证围岩和钢材变形匹配，充分发挥各自的支护能力。文章分析了预应力钻杆体系作用机理，并用计算和现场实例证明了预应力锚杆体系的优越性。最后提出了进入预应力锚杆体系新阶段的十项措施。     

锚杆支护在新汶矿区的应用

本文介绍了锚杆支护在新汶矿区的应用概况２，各种锚杆的性能特点及应用效果。最后，就加强出锚杆支护的认识与培训，提高其质量，合理施工顺序及研制和开发多种锚杆联合支护形式和新型锚杆等问题提出了建议，对锚杆支护推广应用有一定参考价值。     

管式端锚注浆锚杆原理及应用

本文介绍一种新研制成功的管式端锚注浆锚杆。该锚杆的设计和施工都考虑了与围岩变形相适应的要求。该锚杆利用了钢管受拉后与管内水泥砂浆相互作用的特性，从而提高了锚杆结构强度。文中提出了弹性阶段以后锚杆工作状态的分析，并试探性给出锚杆塑性阶段力学模型。为了与其它类型锚杆相比较，文中应用模糊数学综合评判的方法将国内外现有锚杆进行优→劣排序。     

新型可回收树脂金属锚杆的研制与应用

新型可回收树脂金属锚杆弥补了普通树脂锚固式锚杆安装后难拆除的缺陷。经力学性能试验和现场应用,该锚杆具有适应性强、承载力大、可靠性高、综合力学性能好等多项优点,能够满足回采巷道支护的要求。     

90年代的锚杆支护

回顾了锚杆的发展历史,综述了各种锚杆的优缺点、特性及锚杆支护的4种功能:悬吊、层压、压缩拱和挤压连结体。着重强调了缝管锚杆的产生、作用、优缺点和使用情况。     

锚杆钻装机械设备的现状和发展趋向

阐述了单体式锚杆钻机和锚杆钻装台车的发展概况、结构特点、主要技术参数以及发展趋向。     

可回收树脂锚杆的作用

本文分析了可回收率锚杆的结构和其受力特征，介绍了现场应用情况。     

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