煤矿胶带输送机分布式监控系统的通信网络

介绍了一种基于全矿井胶带输送机分布式监控系统的网络结构,该系统设置了2个就地控制站、1个集中控制站和1个远程监控主站,建立了RS-485、PROFIBUS和以太网3个层次的通讯网络,实现了对胶带输送机的就地、集中、远程监控,提高了生产效率,减少了现场操作人员,提高了安全性,取得了良好效果。     

井下探险救援机器人的设计

概述了研制井下探险救援机器人的必要性,详细论述了井下探险救援机器人设计的理论依据,探讨了其结构形式,设计了四轮驱动装置,以设计实例分析了其控制系统的组成,并介绍了所研制的井下探险救援机器人。     

2300XP电铲电气系统数字化改造

针对2300XP电铲特点,设计了一套基于PLC的数字化电气系统,详细介绍了改造方案,并给出了控制方式。对进口模拟系统进行了数字化升级改造获得成功,全数字式电气系统改善了控制精度,提高了可靠性,减低了维修成本,完全满足生产要求。新系统在德兴铜矿实践运行中取得了优良的效果。     

瓦斯检测传感器概述

阐述了两种国内外井下常用瓦斯检测传感器的工作原理,比较了它们的优缺点,分析了瓦斯检测中遇到的问题,探讨了现有瓦斯传感器存在问题的解决方案并对新式瓦斯检测仪器的发展方向提出了见解.     

井下临时抽放瓦斯系统的技术改造

介绍了抽放瓦斯系统现状及存在问题,并分析了问题的成因;通过技术改造使系统得到了优化,满足了抽放瓦斯区域对抽放量的要求,提高了矿井防灾抗灾能力。     

利用高铁赤泥提取铁精粉的可行性试验研究

分析了氧化铝赤泥中铁的含量,介绍了采用高梯度磁选机对高铁赤泥进行的可选性研究情况,得到了合格的铁精粉,减少了固体废物的排放量,增加了企业的经济效益。     

邢台百泉岩溶水系统地下水环境保护

该文详细论述了百泉岩溶地下水系统水文地质特征,收集了20世纪70年代以来的地下水动态资料,对地下水环境演变过程进行了分析,用均衡法计算了区域地下水资源;建立了地下水数学模型,利用1992～2006年,30多个长期观测孔的地下水位动态资料,对模型进行了全面的识别调试,利用建立的模型对区域地下水环境发展趋势进行了预测。根据本区水文地质特点提出了地下水环境保护措施。     

关于加快我国铁矿石选矿技术自主创新发展的思考

论述了加强自主创新工作的意义,总结了我国选矿技术进步的特点,分析了我国选矿技术存在的问题,提出了加快我国选矿技术进步的建议。     

综采工作面快速通过陷落柱方法实践

通过对陷落柱资料的分析,探讨了工作面强行通过陷落柱的可行性方案。该方案的实施,减少了工作面搬家工作量,节约了费用,最大限度保证了工作面连续推进,实现了高效开采,取得了一定的经济效益,也为以后开采过程中揭露陷落柱和强行通过陷落柱问题提供了经验和依据。     

徐矿集团环保信息管理系统的开发

针对徐州矿务集团有限公司现行的环境保护现状和要求,开发了徐矿集团环保信息管理系统.系统的应用提高了环保工作效率,实现了环保数据的信息化管理,节约了大量的人力、物力与财力,大大提升了环保工作管理水平.详细介绍了系统的开发过程及投入使用后取得的效果.     

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。