单轨吊运输系统在大倾角副斜井改造中的应用

红三沟煤矿在矿井技术改造时,为简化辅助运输系统,将绞车提升全部改为单轨吊机车运输,副斜井作为25°大倾角,改造后能否安全运行是该系统改造的关键.通过对副斜井大倾角条件下单轨吊机车设备选型进行论证,采取安装防偏摆窜动、特殊条件下起吊以及大倾角防超速防打滑等措施后,实现安全运行.     

浅谈复杂地质条件下的综采工作面设备选型

在总结一般条件下综采工作面设备配套选型理论和经验的基础上,详细探讨了三软和大倾角等复杂地质条件下综采工作面设备选型的特殊要求。对于三软煤层工作面关键是要合理增大液压支架的支撑高度,及时支护顶板局部冒落所增加的空间;而对于大倾角工作面关键是要做好防止综采设备的下滑倾倒问题,只有针对其特殊性来进行生产设备的选型,才能保证煤层开采的顺利进行。     

大倾角综放工作面切眼施工及设备安装

针对大倾角工作面设备安装存在的诸多不安全隐患,通过采取有效措施,成功地完成了工作面设备安装工作,为大倾角设备安装提供了经验。     

大倾角综采工作面设备快速安装技术研究与应用

综采工作面的安装速度直接影响工作面的接替。由于综采工作面设备多,设备体积大直接制约工作面的安装速度,尤其在大倾角工作面安装期间,设备运输期存在安全隐患。该工作面通过制定合理的安装工艺,运输过程中采取分层刹车,提高了运输安装效率,实现了大倾角工作面安全快速安装,有效缓解了工作面接替紧张,同时为类似条件下综采工作面高效安装提供经验。     

切眼大倾角、大吨位综放支架安装技术创新实践

该文介绍了在切眼大倾角条件下,大吨位液压支架的安装机理,通过计算,确定合理的提升运输及设备布置方式,解决了运输的难题,并对安装过程的重要环节进行了分类,介绍了支架安装施工工艺。     

推覆体下大倾角高瓦斯软煤层综采设备选型研究

通过对国投新集能源股份公司二矿1113107综采面,在推覆体下大倾角、高瓦斯、易自燃厚软煤层综采设备选型配套的分析研究,系统地介绍了设备选型配套、液压支架防倒防滑措施的成功经验,可为相似复杂条件下综采面的设备选型借鉴。     

常村煤矿2311大倾角综放工作面设备改造及安装技术

2311综放工作面为常村煤矿3号煤层首个大倾角工作面,面临综放设备适应性差和安装困难等问题。根据工作面地质情况,对采煤机、液压支架、刮板输送机以及转载机等设备进行针对性改造,并制定了大倾角工作面安装技术措施,确保了综放设备的安全、快速安装。改造后的综放设备稳定性更高,可以适应2311大倾角综放工作面生产需要,现场应用取得显著效果。     

大倾角综放工作面回采技术实践

硫磺沟煤矿(4-5)02工作面煤层倾角17~25°,根据顶底板岩性和煤层赋存情况,结合矿压参数对设备进行配套选型,经实践证明设备选型配套合理,生产过程中克服运输机上窜下滑、支架防倒防滑、采煤机电缆防滑等技术难题,成功回采该工作面,为以后的大倾角工作面回采积累下宝贵经验。     

大倾角综采面液压支架拆除的实践

介绍了大倾角综采工作面液压支架拆除采用机采扩帮，锚、网、索联合支护参数的选择，工作面轨道选型、轨距设计、轨道铺设技术要求；拆除设备的安装；采用上行掩护支架拆除方法及用调度绞车稳架、运架等，并分析了大倾角综采工作面液压支架拆除的技术要点、安全关键。     

大倾角综采工作面的三机配套选型应用

通过对同晟矿A10煤层生产条件的分析,正确合理地对大倾角综采工作面设备进行配套选型,对工作面的防倒、防滑方案进行细化,为大倾角三软煤层综采工作面在设备配套选型方面提供一定的参考与借鉴。     

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     

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     

2014 second batch of rare earth quota released

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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     

China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.