我国铀矿井探矿地质效果分析

本文阐述了我国已开发的主要铀矿井探矿地质效果,分析了影响矿井储量增减的地质因素及进一步提高矿井探矿工作的主要经验。     

矿井地质管理系统发展前景

对大同煤矿矿井地质管理工作现状进行分析，认为传统地质工作方法已无法满足快速发展的现代化矿井的要求，提出了开发矿井地质管理系统的可能性、迫切性、重要性和长远性。     

白集煤矿加强储量管理的实践与认识

通过加强储量管理工作，强化矿井地质基础作用，有效控制地质因素对矿井生产的影响，推动矿井资源的合理开发。     

关于“矿井地质报告”分类的探讨

通过对矿井地质报告编制中存在问题的分析研究，结合我局生产矿井实际，提出了矿井地质报告分类编制的建议。     

关于加快矿井建设速度缩短建设周期问题的探讨

如何加快矿井建设速度，缩短建设周期，一直是煤炭工业发展中十分关注的问题。现行煤矿基本建设程序及管理体制制约着矿井建设速度，影响投资效益。本文根据建立社会主义市场经济和建设项目实行业主责任制的原则精神，结合矿井开发建设阶段地质，设计，施工之间的依赖和制药的内在关系，遵循系统工程及程序逻辑理论，提出矿井建设推行业主责任制，实行“地质，设计，建设施工一条龙，合理交叉”的组织管理模式。真正做到项目业主对矿     

矿井瞬变电磁法勘探三维模型建立及成果分析

随着矿井开采深度的增加，地质条件的复杂性也愈发明显，为了更安全、高效、准确地探测矿山资源开采周边地质环境，需要更先进的探测技术和探测方法，来提高矿井地质勘探的准确性及探测的直观性。目前矿井主流的探测方法都是以二维勘探为主，主要是受限于勘探空间狭小等环境影响，无法像地面一样开展有效的三维勘探。利用矿井下方有效的空间，增加多方向性的探测，通过数据的整合，进行三维瞬变电磁探测，增加了矿井下方探测的空间性、立体性，最终结果更具有直观性，使矿井下方的超前预测预报及工作面回采的安全性有了更好的保障。采用矿井下瞬变电磁三维勘探方法，三维模拟结果稳定且真实程度较高，经与地质资料分析、对比，与实际地质情况相符。     

铁华山井田南部开发可行性分析

铁华山井田受地质构造的控制，划分为南部和北部。由于南部地质条件比北部复杂，矿井初步设计没有对南部开发作充分考虑，致使矿井南部有比较大范围未布置井巷工程。目前，井田北部开采已近尾声，有必要对南部的地质构造和煤层赋存条件作进一步的分析，以求合理开发南部煤炭资源，延长矿井寿命。     

徐州矿务局矿井地质条件分类述评

介绍了矿井地质条件分类特点及徐州矿务局各生产矿井地质条件分类结果，并对该局矿井生产地质条件及今后矿井地质工作提出了看法。     

浅谈矿井地质工作应注意的问题

本文主要介绍矿井地质工作中应清晰认识的一些问题，从而明确工作思路，按所要达到的目标逐步实施，把具体的每一项工作落到实处，为满足矿井的安全生产服务。     

淮北海孜井田矿井地质条件对采掘的影响

本文通过对淮北海孜井田矿井地质和井下现场资料的调查和分析，研究了矿井地质条件对采掘生产的影响程度，认为地质构造复杂，煤层赋存不稳定是影响采掘生产的主要因素。     

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