大倾角下运带式输送机新型托辊装置试验研究

扼要介绍大倾角下运带式输送机的主要关键技术——新型深槽型托辊装的理论分析研究与试验,为煤矿广泛使用大倾角下运带式输送机提供了技术依据     

新式深槽型大倾角上运带式输送机

新式深槽型大倾角上运带式输送机煤炭科学研究总院上海分院朱敏奇带式输送机是一种运量大，运行费用低，使用可靠的连续输送设备，在煤矿得到了广泛的应用。普通带式输送机的输送倾角一般小于１８°，为了合理选择开拓方式，节省巷道开拓费用和设备，缩短施工工期，煤矿急...     

煤矿大倾角下运带式输送机关键技术的研究

大倾角下运带式输送机控制系统自纠偏自动张紧装置解决了带式输送机起动、制动和停车过程中的跑带问题,自移式机尾制动装置解决了带式输送机运行过程中的跑带问题,从而使大倾角下运带式输送机的跑带问题得到了有效地解决。     

大倾角上运带式输送机的应用

目前,煤矿井下原煤运输系统一般采用多部带式输送机和刮板输送机接力运输,这种传统运输方式巷道开拓量大,设备投资多,占用人员多。介绍了大倾角上运带式输送机的结构、技术特点、优越性及试用的成功经验。应用效果证明,在煤矿井下倾角25°以上的原煤上运巷道采用大倾角上运带式输送机具有推广价值。     

大倾角下运带式输送机的研制

针对大倾角下运带式输送机关键问题 ,提出解决这些问题的方法 ,分析了大倾角下运带式输送机各种运行工况及采取的措施     

大倾角下运带式输送机的研制与应用

针对目前大倾角下运带式输送机具体运行中存在的问题,设计研制了-31°大倾角下运带式输送机。按技术条件对整体方案进行了对比分析,提出新的改进设计方案,包括启动方式、张紧方式、托辊布置形式、减速挡煤装置及阻燃输送带的选用等。该大倾角下运带式输送机已在朔州下梨园煤矿成功应用,运行状况良好。     

下运带式输送机新型电控装置的研制

介绍国家攻关项目“大倾角上下运带式输送机”中的大倾角下运带式输送机采用可编程序控制器的核心电控装置的硬件配置、程序设计等有关问题。     

泉店煤矿大倾角下运带式输送机的设计

针对大倾角下运带式输送机设计中存在的主要问题,介绍了大倾角下运带式输送机的输送带、牵引力和电动机功率、减速器,拉紧装置、软启动装置的选型及计算。     

关于大倾角上运带式输送机的几点探讨

针对目前使用的普通ＴＤ７５型带式输送机存在的不足，设计制造了大倾角上运带式输送机，并分析了设计制造时应注意的问题。     

机电信息

机电信息普通吊挂式带式输送机改造成大倾角下运带式输送机目前，国内生产的大功率下运带式输送机结构复杂，价格贵，需机头峒室大，一些用户难以接受，特别对于小功率下运场合不适用。新汶矿务局华丰煤矿结合本矿条件，在山东矿院的协助下，将ＳＰＪ－８００／２×３０普...     

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。