认真贯彻“巩固、配套、完善、提高”的方针努力把地方中小铁矿发展到一个新水平——在全国地方铁矿经验交流会上的总结讲话

全国地方铁矿经验交流会,从10月10日开始,已开了四天半,今天就要结束了。会议期间,大家首先听取了徐大铨副部长的讲话,有18个单位在大会上作了经验介绍,分发了31份书面经验材料,进行了分组讨论,参观了朝阳县东五家子铁矿和大庙铁矿。徐副部长还用半天时间与部分省、市、县及矿山的领导同志进行了座谈。大家一致反映,这次会议开的很好,总结了工作,交流了经验,认清了形势,明确了任务,坚定了信心,达到了会议的预     

义煤千秋--献给在21181工作面抢险救灾的英雄

一个奇迹 一个神话 在古老的豫西大地 在年轻的义煤矿区 创造了 诞生了 肆虐了三百三十四天的火龙疯狂了八千零一十六个小时的恶魔 在英雄的千秋人面前 在无畏的矿山铁汉面前 退缩了 投降了 我们打赢了 我们胜利了 充满着泪水的欢笑 洋溢着喜悦的自豪     

花开了

花开了,它把自己自然分成两瓣,一瓣开满了善良,一瓣开满了丑恶。 花开了,它把自己自然分成两瓣一瓣开满了懒惰,一瓣开满了勤劳。 花开了,它把自己自然分成两瓣,一瓣开满了牛郎织女般的分离,一瓣开满了中秋满月般的团聚。 花开了,它把自己自然分成两瓣,一瓣开满了豺狼的贪婪,一瓣开满了春蚕的;}士烈。     

论锅炉谷壳燃料的气力输送与系统改造

本文从工厂的实际出发,论述了燃煤快装锅炉由燃煤改造为燃烧谷壳,并进行了系统的配套改造。实现了谷壳变废为宝;谷壳气力输送实现了谷壳给料自动化,稳定了生产,节省了劳动用工,消除了安全隐患;印染废水得到了综合利用,达到了预期目的,对同类型生产具有指导作用。     

变频恒压供气在矸井瓦斯泵站的应用

采用变频传动与PLC技术相结合,设计了矸井瓦斯泵站恒压供气控制系统,优化了泵站的控制过程。控制系统实现了闭环控制,既保证了系统瓦斯压力稳定,降低了系统瓦斯压力的波动,提高了相关设备的寿命,又节约了电能,降低了能耗,更好地推动了节约型矿山、低碳开采、绿色矿山的建设。     

加强工艺技术改造 实现选煤提质增收

晓明矿选煤厂通过对跳汰分选设备及辅助系统的技术改造,完善了选煤工艺环节,灵活了生产系统,创出了名牌产品,提高了生产能力和产品质量,降低了选煤成本,增加了企业的经济效益,取得了显著的社会效益。     

矿用电驱动装置振动时频特性研究

介绍了振动信号时频分析方法,分析了矿用电驱动装置故障诊断的难点,构建了电驱动装置振动测试系统,拾取了电驱动装置振动加速度信号。应用小波阈值去噪方法,滤除了振动信号噪声,评价了去噪效果。利用小波时频分析技术,获得了电驱动装置振动时频图,分析了电驱动装置振动时频特性,计算了振动故障特征频率,诊断了电驱动装置故障并进行了结构改进,测试验证了改进效果。为矿用电驱动装置可靠性提升奠定了基础。     

旋转地质导向系统在中国大陆水平井的首次应用

介绍了旋转地质导向系统的原理及在塔河油田的首次应用，针对塔河油田水平井的特点，提出了相应的技术措施，充分发挥了旋转地质导向系统优越性，提高了机械钻速，缩短了钻井周期，减少了井下复杂情况，提高了工程质量。     

探采结合在红透山铜矿的实施

阐述了红透山铜矿对赋存形态复杂的矿体实施采准阶段的探采结合,取得了较好的效果,不但探明了矿体,增加了储量,还缩短了探矿、采准周期,提高了工程的效率,满足了生产需要.     

新驿矿井三采区开采方案优化设计应用

新驿煤矿通过对三采区-430上部开采优化设计,工作面布置采用了走向长壁与倾斜长壁相结合,增加了灵活性,提高了煤炭回收率,降低了掘进率,增加了工作面煤量,减少了采面搬家次数,缓解了采场接续,取得了较好的应用效果。     

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。