综采工作面设备的选型与配套

合理地进行综采工作面设备选型及参数确定,是十分重要且复杂的问题,关系到综采工作面高产、高效、安全等目标能否实现。文章对液压支架、采煤机及刮板输送机的选型原则和配套参数的确定进行分析研究,为综采工作面在设备的选型配套方面提供一定的参考与借鉴。     

设备选型设计刍议

设备选型设计刍议北京煤炭工业学校解同信设备选型设计是设备管理的前期工作，是保证设备安全、经济运行的前提。设备的选型设计不是闭门造车的过程，要根据企业的实际情况，从成本核算、安装、运行诸方面作综合效益分析。笔者在煤矿从事机电维修工作十几年，深感设备选型...     

浮选自动加药系统的设计及设备选型

讨论了浮选自动加药系统的方案设计、设备选型、控制算法以及参数设置等方面的问题 ,简要介绍了所选设备的性能参数。     

沙曲8.0Mt/a大型炼焦煤选煤厂改扩建设计优化

以沙曲选煤厂改扩建工程为背景,针对原有工艺、设备、布置等方面存在的问题,结合煤质资料和沙曲一、二矿井生产实际,重点对选煤工艺设计优化、设备选型的确定等方面进行归纳总结,对新旧粗煤泥分选系统的工艺设计、设备选型及生产运行情况进行了对比分析,以及改扩建后新技术、新工艺、新设备的应用情况与存在问题进行了剖析。     

胜利一号露天煤矿扩建工程剥离开采工艺的研究

结合胜利一号露天煤矿扩建工程,对新增剥离可能采用的3种开采工艺的设备选型、设备投资、运行成本等方面进行了研究。     

对平岗矿薄煤层开采的探讨

从工作面的设计、设备选型配套、现场管理等方面分析了平岗矿薄煤层开采的成功经验,同时对设备存在的问题提出了建议。     

井下供配电系统设计与选型

根据新疆天富小沟矿业井下电气设备布置台数及类型对井下负荷进行了计算,对下井电缆进行了选型,从供电方案、变电所位置、供电电压、设备配置等方面对井下供配电方法和设备进行了选型设计,并对如何加强井下电气设备的安全管理进行了介绍。     

胜利能源公司设备技术交流实施方案及对设备选型购置的重要性探讨

矿山设备是矿山经营和发展的生产力,新建和改扩建矿山的设备选型和购置显得尤为重要,其关系到最终购置的设备能否适应矿山实际,能否实现经济运行的目的,是影响矿山经济运行的重要基础。矿用设备技术交流是对设计院中所选设备的能力、适应性、可靠性及匹配性等方面进行验证和校核,为设备选型和后期招标具有极其重要的现实意义。     

煤矿瓦斯抽采设备选型设计

瓦斯是煤矿重大灾害源之一,治理瓦斯的重要手段是进行瓦斯抽采,瓦斯突出及高瓦斯矿井在采掘前必须进行瓦斯抽采。介绍了煤矿瓦斯抽采设备选型的方法、步骤及选型计算,可为煤矿现场服务的技术人员在瓦斯抽采设备选型及设计方面提供参考。     

浅谈空调设计中的几点节能措施

本文对空气调节工程设计中,就冷热源和输送设备的合理配置及空调末端设备的正确选型等方面进行探讨,以利于空调工程节能     

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