应用RFID技术实现煤矿矿车管理

煤矿矿车运输是我国大多数矿井物料运输的主要方式,如何合理调度,提高矿车利用效率是煤矿管理者经常面对的一个难题。主要表现在:(1)矿车每日进出矿井的准确时间、数量信息;     

矿车计数显示器诞生

兖州矿业（集团）公司南屯煤矿研制的矿车计数显示器，可以与轨道计轴传感器相互配合，在各种有轨机车牵引（包括人力推车）的轨道运输系统中，用于列车运行方向的自动识别和通过矿车台数的自动计量考核。此项成果填补了国内的一项空白，已经获得国家专利权。其工作原理如...     

基于RFID技术的矿井运输车辆定位跟踪监控系统研究

为了提高煤矿井下矿车调度效率、实时了解矿车运输物料的信息和各路段矿车的数量、降低调度的盲目性以及防止安全事故的发生,文章研究了一套基于RFID技术的矿井运输车辆定位跟踪系统并重点介绍了该系统软硬件设计过程.实际应用表明,该系统安全、可靠、实用,提高了煤矿井下轨道运输监控系统的智能化水平.     

基于改进粒子群算法的矿车调度系统设计

提出了改进粒子群算法,提高了计算速度;以矿车等待时间短和装卸车距离短为原则给出了矿车调度系统的目标函数,用改进粒子群算法计算矿车调度系统的最佳调度方案,提高了矿车资源利用率。设计了基于改进粒子群算法的矿车调度系统的结构以及该系统软件的各功能,使矿车调度系统更便于操作。     

英国的煤矿设计(续八)

9.井下煤炭运输系统:过去以矿车为主,从1t到5t矿车都有。现在除个别矿井仍保留矿车运输方式外,基本上已全部改为胶带运输方式,甚至从工作面直到地面。井下胶带输送机由曼洛斯系统(MINOS—Mine Operation System)在地面中央控制室进行集中监控。曼洛斯系统由英国采矿研究院(M·R·D·E)研制。在中央控制室有两个显示器:一个显示井下胶带输送机、煤仓系统运行状     

矿车清扫器

目前,各生产矿井中,由于煤的湿度关系,在矿车车箱内的四角与底部都粘积着一定数量的煤,其数量的多少,则决定于煤的湿度与粘性,在较严重的情况下竟占矿车容量的10—20%,对整个矿井的生产颇为不利.它不但使提升设备作了不少虚功,且影响了提升能力和降低了矿车的调转率.所以,清扫矿车就成为矿井生产环节中不可缺少的工作.现有生产矿井中有用铲子清扫或用大木锤打击矿车车箱,借振动使煤松动掉落.使用这些人工方法,劳动强度较高,而效率低,并影响矿车的使用寿命.因为用铲子清扫容易把矿车车箱壁损伤,用木锤打击,则常把车箱壁打得向里凹;会减小了矿车的容量.自水力采煤发展以来,一些只有工作面用水力开     

掉道矿车复轨器

掉道矿车复轨器福建省苏邦煤矿郑德海矿井矿车运输经常发生矿车掉道，通常采用手工撬车，效率低，不安全。我矿设计制作的掉道矿车复轨器（图），可用电机车、蓄电池机车、绞车为动力，借助于复轨器的辅助斜面将矿车牵引到轨道上来，实现矿车掉道复轨。这种复轨器可适用于...     

矿车结底清理方法的探讨

煤矸粘结矿车车底是煤矿生产运输过程中存在的一个普遍问题。经常而及时地清理矿车车箱是提高矿井运输效率的重要因素。该文简要介绍了目前国内外采用的矿车结底预防措施和清理方法。     

基于ZigBee的钨矿井下矿车定位监测系统研究与设计

针对现有的钨矿井下矿车定位系统的布线困难、信息化和可视化水平低等问题,为了更加合理、高效地调度矿车,设计了一种基于Zig Bee的无线网络系统,实现对井下矿车定位及安全监测。首先探讨了井下环境无线信号传输的RSSI测距模型,并采用高斯滤波对RSSI测距参数进行修正后,结合极大似然估计定位方法实现矿车定位,针对此定位算法存在的较大误差,提出了加权质心定位算法来提高矿车定位的准确性。然后通过上位机将井下采集的矿车速度和定位信息实时显示在井上监控主机和大屏幕中。通过实验仿真,结果证明,改进的加权质心定位算法有效地降低了定位误差,上位机对速度数据信息可实现调用、存储、实时显示、查询并预警等功能,系统具有实时性强、精度高、鲁棒性好等特点,可以有效提升钨矿井下开采生产的安全性。     

1t矿车架式电动翻车机

１ｔ矿车架式电动翻车机是一种自制矿车转装置，它结构简单，操作方便，成本低，效益高，在１０多对矿井施工中取得较好的经济效益。     

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。