低品位难选铁矿还原焙烧—磁选生产金属化团块的研究

本文结合我国铁矿资源多为低品位难选铁矿的特点，通过试验研究，提出采用直接还原－细磨磁选生产铁品位高，质量稳定的金属化团块，作为电炉炼钢的生产原料。     

韦岗铁矿采场出矿品位的优化

本文通过立体模拟试验得出的有关数据和韦岗铁矿生产的实际资料，运用技术经济的方法，对韦岗铁矿在采矿方法改造项目结束以后，合理的采场出矿品位、经济的精矿品位及损失与贫化进行了计算、分析、评价和优化。     

浅析提高尖山铁矿精矿品位的途径

通过对流程考查、选矿试验及目前生产状况的分析，探讨了尖山铁矿精矿品位不高的原因，提出提高精矿品位的途径。     

河钢矿业矿产资源高效利用技术

对河北钢铁集团矿业有限公司所属近北庄铁矿、庙沟铁矿和柏泉铁矿分别进行了选矿车间的考察和工艺流程改造。近北庄铁矿通过干选工艺改造,可以提前抛出产率为30%的合格尾矿,提高了入磨品位;庙沟铁矿通过对堆存的低品位难选矿石的回收每年可生产铁品位为65.02%的铁精矿7.65万t;柏泉铁矿通过增加尾矿再磨再选作业,每年可多回收铁品位61%左右的铁精矿8 000 t。     

浅谈铁古坑露天矿生产阶段的地质工作

介绍了铁古坑铁矿充分利用现有条件开展生产地质工作，指导采矿进行合理回采，提高了采矿矿石输出品位，满足了选厂对入选矿石品位的要求。     

铁矿山矿量品位管理的新途径

以金岭铁矿建立矿量品位数据库管理系统为例，论述了Access在矿山矿量品位管理工作中的应用，提高铁矿山矿量品位管理工作。     

歪头山铁矿大块矿石干式磁选的实践

歪头山铁矿大块矿石干式磁选的实践表明：在歪头山铁矿采矿地质条件差异很大，矿石生产极其困难的情况下，以大量回收表外矿与低品位矿石来弥补矿源的严重不足，减少了矿石损失率，提高和稳定了入磨、入选矿石品位，提高了选厂处理能力，平均年创经济效益１７９２万元，达到了预期目的。     

依靠科技加强管理 高效利用矿产资源

浙江漓铁集团公司是在漓清铁矿的基础上发展起来的，是浙江省钢铁工业的主要原料基地，铁矿储量和产量均占全省70％左右，建矿三十九年来，为浙江钢铁工业的创建和发展作出了重大贡献。漓清铁矿是一个中等规模的砂卡岩型磁铁矿，年采选设计能力为100万t．1965年最终地质勘探报告提交保有储量为5389．3万t，其中设计范围储量为4733万t．矿产资源条件很差，一是矿石贫、品位低，全矿平均地质品位仅30％左右，矿石采出品位为23．5％左右，比全国重点铁矿平均品位低8．68个百分点，比地方中小型铁矿平均品位低10．l个百分点，在全国地方骨干铁矿…     

云南细粒红铁矿的选别工艺研究

通过对云南某铁矿选矿厂的矿样分析表明该矿样以赤铁矿、镜铁矿为主，且铁矿物的嵌布粒度较细；进行的分选新工艺流程试验表明，阶段磨矿阶段选别中采用弱磁选-强磁选-重选工艺流程，能使铁精矿品位达到62.15%，回收率达到87.14%，比现有生产铁精品位58.35%、回收率69.18%的生产指标，精矿品位提高了3.8个百分点，回收率提高了17.96个百分点，说明本次试验在提高铁精矿品位、提高回收率等方面都取得很好的指标。     

太和铁矿回收利用低品位钒钛资源地质工作探讨

通过分析太和铁矿低品位钒钛资源的利用现状,指出其低品位钒钛资源回收的可行性途径,提出了生产勘探对合理利用低品位钒钛资源的重要性。     

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。