浙江兰亭尾矿库在线监测系统的应用

浙江漓铁集团对兰亭尾矿库增设人工监测设施、增设和完善原有在线监测预警系统。阐述了在线安全监测系统在该尾矿库监测项目及在线监测系统设置方案,该系统的应用进一步提高了尾矿库安全保障水平和事故预警能力。     

在线安全监测系统在某尾矿库的应用

尾矿库是矿山安全隐患点,为提高尾矿库的安全稳定性,在进行了尾矿库在线安全监测系统特点、设计和功能分析的基础上介绍了尾矿库在线安全监测系统的应用情况。指出了在尾矿库建设在线安全监测系统非常必要,能在一定程度上降低尾矿库的事故发生概率,提高矿山生产安全性;随着业界对在线安全监测系统重要性认识的提高,在线安全监测系统将会变得更加完善。     

天空地一体化技术在尾矿库监测预警中的应用

现阶段对于尾矿库的监测方法主要运用实时在线监测系统和人工监测相结合的方式,对尾矿库的表面位移、内部位移、浸润线、降雨量等影响尾矿库稳定性的因素进行安全监测,当监测数据超过设定阈值时进行预警。针对现有尾矿库监测手段单一、监测类型不全面,不能及时有效预警等问题,建立了基于遥感卫星监测、无人机监测和地面传感器实时监测的天空地一体化尾矿库监测预警方法。通过对天、空、地三端的数据进行整合分析,利用WebGIS技术将数据进行可视化展示,当数据超过阈值时能实时通过短信、电子邮件、小程序等方式向尾矿库管理单位、应急指挥单位和监管单位根据不同的预警级别进行预警发布。结合该方法开发的应用系统在国内某市的150座尾矿库监测预警系统中成功应用,实现了对尾矿库的实时、动态监测预警,取得了很好的应用效果。     

基于4G通信的尾矿库安全在线监测系统研究及应用

本文总结了尾矿库安全在线监测系统的通信技术及其应用的局限性,提出了基于4G通信技术的尾矿库安全在线监测系统架构,说明了分布式一体化数据采集传输单元的设计方案和优点;通过具体应用案例介绍了分布式一体化数据采集单元的应用效果。本文对4G通信技术的应用推广和提高矿山安全在线监测系统稳定性具有较大的现实意义。     

极端天气条件的尾矿库安全在线监测系统防护技术研究

安全在线监测系统在尾矿库日常管理中的作用越来越大,但极端天气严重影响其运行稳定性。本文介绍了在线监测系统设备的集成化防护、冗余供电、环网通信等几种技术,并通过实际案例阐明以这几种技术为基础的极端天气应对方案。实际应用证明:野外设备的防护、供电、通信系统的稳定和完善的防雷防浪涌设计是保障尾矿库安全在线监测系统稳定运行的关键。     

尾矿坝汛期坝体浸润线监测预警值研究

鉴于当前尾矿库在线监测系统中关于浸润线埋深预警值的选定上存在困难,本文在已有研究基础上,结合浸润线在线监测系统,从坝体稳定性角度,分析研究了尾矿坝坝体浸润线监测的预警值,提出了汛期尾矿库坝体最不利浸润线的确定方法,将预警参数分为企业、县安监局、市安监局三级预警,并针对不同工况确定三级预警参数,此研究成果可为在线安全监测系统的预警提供技术支持。     

一种露天矿平地型尾矿库在线监测技术应用研究

为了持续加强我国尾矿库安全监测管理力度,确保尾矿库安全稳定运行,针对一种露天矿平地型尾矿库在线监测系统进行分析研究。根据平地型尾矿库的实际运行特点及监测所需参数项目,结合系列核心算法,将尾矿矿浆流向渗流场与矿浆相互应力场融合,建立较为符合实际运行的尾矿库实况理论模型,并从系统硬件配置与软件设计两大模块展开设计,得出完整的尾矿库在线安全监测系统。经现场应用后表明:监控画面在完成实时反映尾矿库运行状况的同时,各项监测数据显示稳定并可形成曲线变化趋势,利于尾矿库安全管理预测,系统整体运行稳定性保持在90%以上,确保了尾矿库实时在线安全监测的系统化、稳定化与实用化,应用效果良好。此技术的应用是现代化安全监控决策新平台的一种科学体现,更可为类似尾矿库的数据监控提供一定参考价值,值得推广。     

尾矿库在线监测及应急指挥系统关键技术及工业应用

传统的尾矿库监测系统侧重尾矿库数据的采集、管理和展示,无法满足尾矿库监测和应急救灾需求,同时,系统自身安全性、可靠性不足,在险情发生时往往已经瘫痪,无法发挥监测系统应有的作用。为此,本文提出了一种尾矿库在线监测与应急指挥系统,通过针对恶劣环境优化的传感系统、通讯系统和应急救援辅助工具,将尾矿库在线监测与应急指挥业务有机结合,实现集尾矿库正常运行时的在线监测和预警、险情发生时的应急指挥及辅助救援于一体的综合化安全管理平台,从而大幅提高尾矿库安全性。     

我国尾矿库安全监测技术发展综述

中国是世界上尾矿库数量最多、灾害事故发生率最高的国家之一。尾矿库安全监测技术能提供尾矿库安全状态数据,及时掌握尾矿库运行状态,指导尾矿库安全运行,预防和减少发生事故灾害和环境污染。随着我国对尾矿库安全的日益重视,尾矿库安全监测的重要性日益提升,尾矿库安全监测技术也随之迅速发展。我国尾矿库安全监测技术发展经历了初级、中级和高级三个阶段,从最初的无章可循到后来的有章可循、有法可依,对标准的认知及运用从生搬硬套到日益科学、精准；从人工监测、自动化监测逐步发展智能监测,监测效率和监测精度日益提升；监测设备也随着社会和经济的发展而日新月异,新的科技成果不断纳入。目前,我国尾矿库安全监测技术已进入一个良好的发展时期,在全国范围内构建了一个强大的国家级尾矿库安全生产在线监测监控与预警大平台,为尾矿库灾害的及时诊断和安全预警提供强大技术支撑,最大限度地消除尾矿库灾害事故的发生。     

榆木沟尾矿库在线监测系统设计与应用

尾矿库属于金属、非金属矿山的重大危险源,在矿山的安全管理中具有重要地位。基于榆木沟尾矿库在线监测系统的设计与应用实践,对系统的构成、功能、特点及应用效果进行分析,结果表明,该系统具有界面清晰、性能可靠、测量精确的特点,能够及时提供预警和预报,为尾矿库加固工程设计、管理及消除隐患提供依据。     

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