无轨胶轮车辅助运输系统在王坡煤业的应用

本文对制约王坡煤业生产的辅助运输系统无轨改造可行性进行了分析,并对无轨运输巷道进行了改造及无轨胶轮车设备选型,同时介绍了无轨胶轮车运输监控系统工作流程。通过无轨胶轮车辅助运输系统的改造,极大地提高了矿井经济及安全效益。     

无轨胶轮车失速保护安全设施的研究现状与设置

无轨胶轮车运输作为一种安全高效的辅助运输方式,在条件适宜的矿井获得了广泛的推广应用,其运行的斜井井筒长度也越来越长,相应的运输安全问题也日趋引起重视。文章分析了无轨胶轮车发生失速的原因,对车辆失速后的速度变化进行了研究,分析了目前国内无轨胶轮车失速保护安全设施的研究状况,提出了无轨胶轮车失速保护安全设施的设置方法,科学地设置失速保护安全设施,可对矿井无轨胶轮车运输车辆和司乘人员提供可靠的失速保护。     

无轨胶轮车在神东矿井辅助运输系统中的应用

无轨胶轮车作为目前国内大型矿井的一种辅助运输方式,对改变井下辅助运输起到了积极作用。文章介绍了无轨胶轮车运输的特点,并阐述了无轨胶轮车的适用条件及在神东矿区的实际使用效果。     

立井无轨运输矸石换装的研究

兖州矿业(集团)公司济宁三号煤矿的辅助运输采用了先进的无轨胶轮车运输系统，是我国第一家立井开拓采用无轨胶轮车为辅助运输方式的矿井。     

立井无轨辅助运输技术的研究与应用

胶轮车运输是当今矿山井下最先进的无轨辅助运输方式，目前已经在充州矿业（集团）公司济宁三号煤矿应用，并取得了圆满成功，从根本上克服了传统辅助运输方式用人多、设备多、事故多、费用高、效率低、效益差等弊病。     

煤矿胶轮车运输安全的思考

叙述了煤矿运输及辅助运输基本情况,主要分析了无轨胶轮车运输在生产过程中容易发生事故的3个主要原因,详细阐述了胶轮车运输安全监管工作中的人、车、路、法4个关键要素。     

三交河煤矿无轨胶轮车调度系统应用

为保证无轨胶轮车运输效率的最大化及运输安全,根据三交河煤矿井下无轨胶轮车运行实际情况,研发一套针对三交河煤矿无轨胶轮车运输的自动高效调度指挥系统,对系统正常运行所需的安全程序、4G无线网络覆盖、软件设计等进行详细设计,在系统试运行过程中对车辆调度控制逻辑进行不断优化。投入使用后,车辆调度指挥系统运行正常且未出现运输安全事故。     

井下无轨胶轮车占道闭锁信号装置的改进

煤矿井下辅助运输无轨防爆胶轮车信号闭锁系统,是近年来普遍应用于井下无轨防爆胶轮车运输系统的安全保护设施。介绍了一种设计简单、动作可靠的新型胶轮车弯道信号闭锁系统,可以避免由撞车或追尾所带来的人员伤亡及严重影响生产的安全隐患。     

斜沟煤矿KJ150A车辆监控及调度系统的应用

随着无轨胶轮车的发展及广泛应用,矿井辅助运输产生了无轨胶轮车超速行驶、巷道堵车、地面与井下车辆无法及时取得联系等问题。为进一步提高煤矿辅助运输安全管理水平,确保无轨胶轮车运输畅通。本文提出了斜沟煤矿辅助运输系统的现状,建立了KJ150A车辆监控及调度系统,并介绍了该系统的各项功能,通过使用该系统,提高了无轨胶轮车的工作效率,优化了矿井运输能力,节约了运输成本,社会与经济效益显著。     

寺河矿立井换装工艺改造应用研究

该文介绍寺河煤矿在立井轨道运输与井下胶轮车运输衔接换装作业方面怎样通过工艺改造提高换装效率,从而发挥无轨胶轮车运输的优势。     

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     

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     

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     

唐口煤矿深部复杂开采工作面瓦斯分源涌出规律研究

研究工作面瓦斯涌出规律对工作面瓦斯治理有重要意义。为了得到唐口煤矿深部3号煤层复杂开采条件下工作面回采时期瓦斯涌出时空演化规律,选取6304工作面作为对象,采用实测方法研究6304工作面瓦斯涌出规律。结果表明:6304工作面瓦斯涌出量为6.534 m³/min,其中煤壁占34.27%,落煤占29.62%,采空区占36.11%;沿工作面倾向由低到高,瓦斯浓度整体为上升趋势,其中1—76号架工作面瓦斯浓度小于0.20%,76—102号架瓦斯浓度上升明显,最大为0.387%;上隅角的后部采空区是工作面的瓦斯主要涌出源,上隅角1号测点瓦斯浓度0.78%,上隅角周边3号、5号、7号、8号、9号测点瓦斯浓度平均为0.643%;周期来压时,上隅角瓦斯相对平时较高。研究为针对性的瓦斯分源监控与灾害防治提供基础。