非洲某风化型铌铁磷多金属矿选矿研究

非洲某风化型铌铁磷多金属矿为风化壳复合烧绿石矿,原矿含Nb2O5 0.62%、含P2O5 8.28%,含Fe 13.91%,矿石风化严重,含泥量较高。根据矿石中烧绿石与脉石矿物之间的比重差异,采用重选实现有价矿物的预富集,磁铁矿具有强磁性,采用弱磁选回收磁铁矿,磷灰石和烧绿石具有可浮性差异,浮选实现磷灰石和烧绿石的分离回收。原矿首先经螺旋溜槽重选可以抛除产率为73.61%的尾矿,重选精矿磨细至-0.074 mm占78%,在磁场强度为0.45 T条件下,经弱磁选铁,获得了Fe品位61.69%,回收率38.83%的铁精矿,选铁尾矿以碳酸钠为调整剂、GY10为捕收剂,经1粗2精2扫磷浮选,获得了P2O5品位为37.59%,回收率为47.88%的磷精矿,选磷尾矿以SH为调整剂、GSC为捕收剂,经1粗2精2扫铌浮选,获得了Nb2O5品位37.56%,Nb2O5回收率65.73%的铌精矿。研究结果可以为该类风化铌矿的开发利用提供依据。     

重-浮联合流程回收某微细粒、低品位钽铌尾矿的选矿试验研究

对-0.038mm粒级中Ta2O5的分布率达到80%以上的某微细粒钽铌尾矿,采用“离心机预富集-粗精矿浮选”的重-浮联合工艺处理该矿石,获得精矿中Ta2O5和Nb2O5品位分别为18.2547%和9.0838%,Ta2O5和Nb2O5回收率分别为35.52%和35.22%的良好指标。为开发利用该类型微细粒、低品位钽铌矿石提供了技术依据。     

某微细粒、低品位钽铌尾矿的选矿试验研究

对-38μm粒级中Ta2O5的分布率达到80%以上的某微细粒钽铌尾矿,采用"离心机预富集—粗精矿浮选"的重选—浮选联合工艺处理,获得精矿中Ta2O5和Nb2O5品位分别为18.254 7%和9.083 8%,Ta2O5和Nb2O5回收率分别为35.52%和35.22%的良好指标,为开发利用该类型微细粒、低品位钽铌矿石提供了技术依据。     

钛砂矿选厂尾矿中细粒级钛铁矿浮选回收试验研究

本文通过高效捕收剂FA-01对某钛砂矿选厂尾矿中的细粒级钛铁矿进行了浮选回收试验。采用“弱磁-强磁”预先抛尾、强磁精矿细磨后浮选回收工艺流程，实现了对钛砂矿选厂尾矿中细粒级钛铁矿资源的有效回收；其中预先抛尾工艺抛尾率达到66.58%，TiO2损失率为18.71%，有效去除影响浮选效果的高岭石等细泥矿物；浮选工艺在弱碱性矿浆体系下，闭路试验可得到TiO2品位43.28%，TiO2回收率为54.63%的钛精矿。     

承德某钒钛磁铁矿尾矿资源化利用技术研究

承德某钒钛磁铁矿选铁尾矿中TiO2品位2.60%，TFe品位7.73%。针对该尾矿中钛铁矿资源尚未回收利用的问题现状，根据尾矿性质，本研究采用“磁重联合阶磨阶选”预富集工艺；以及采用硫酸、EM-B作为调整剂，EM-3作为捕收剂，经过一次粗选、一次扫选、五次精选的钛浮选流程，最终获得了TiO2品位46.23%、浮选作业回收率83.25%、相对选铁尾矿回收率42.03%的钛铁矿精矿产品，实现了该尾矿资源化综合回收利用，为此类矿山提供合理可行的资源利用技术方案。      

内蒙古某低品位铷多金属矿选矿试验研究

内蒙古某铷多金属矿主要有价元素是铷和钽铌,Rb₂O品位为0.11%、(Ta, Nb)O₅含量为222.9 g/t,铷主要以类质同像形式存在于云母和钾长石中,少量赋存于钠长石中,钽铌矿物主要是烧绿石。为回收铷和钽铌资源,在原矿工艺矿物学研究的基础上开展了选矿试验研究,采用“强磁选+重选回收钽铌-中性浮选含铷云母-无氟有酸浮选含铷长石”的工艺流程,硫酸调节矿浆pH值,CK-Y1+DDA组合捕收浮选云母,SDS+DDA组合捕收浮选长石,全流程闭路试验获得产率为0.17%、(Ta, Nb)O₅品位为4.33%、(Ta, Nb)O₅回收率为33.22%的钽铌精矿和产率为70.26%、Rb₂O品位为0.134%、Rb₂O回收率为87.49%的综合铷精矿产品,尾矿中Rb₂O品位为0.045%,实现了矿石中铷资源的充分回收和伴生钽铌资源的有效回收。     

磷矿尾矿选矿试验研究

湖北某磷矿尾矿P2O5品位为14.86％、MgO含量为4.01％,具有较高的回收利用价值.针对该矿样性质,采用正反浮选工艺对其进行富集回收,可获得P2O5品位29.05％、回收率81.04％、MgO含量0.96％的磷精矿,实现了磷矿尾矿的再利用.     

某含磷钛低品位磁铁矿石的选矿试验研究

某地区的低品位磁铁矿石中含有磷灰石和钛铁矿,为了充分开发利用这种低品位的矿产资源,对其进行了选矿试验研究。结果表明:原矿在-74?m占55%的磨矿细度下,采用弱磁选回收铁、磁选尾矿浮选磷灰石、浮选磷灰石尾矿再浮选钛铁矿的工艺流程,可获得TFe品位66.12%、回收率59.61%(磁性铁回收率94.48%)的铁精矿,P2O5品位36.84%、回收率92.65%的磷精矿,Ti O2品位45.87%、回收率60.32%的钛精矿。     

某烧绿石矿的选矿试验研究

某矿中的铌矿物主要为烧绿石,针对其矿石性质,在脱泥、除去铁磁性矿物和锆英石后,用硫酸调浆,改性水玻璃、硝酸铅、OA作调整剂,鳌合剂GYX为捕收剂浮选回收烧绿石.对Nb_2O_5品位0.26%的给矿,闭路试验获得:Nb_2O_5品位27.93%、作业回收率86.97%的铌精矿,铌总回收率为79.43%,实现了烧绿石与脉石矿物的有效分选.     

某锂多金属矿锂钽铌短流程同步富集与分离试验研究

某锂多金属矿含有锂辉石、钽铌锰矿、云母和长石等资源,采用常规重磁浮流程长、工艺复杂、回收率低。本研究采用高效选择性耐低温捕收剂ML和高效捕收剂MT,开发了一种锂钽铌短流程同步浮选与分离工艺,并回收尾矿中的石英长石。在原矿品位Li2O 1.72%、Ta2O5 0.025%的条件下,获得锂精矿Li2O品位6.55%,回收率71.04%;高品位钽精矿Ta2O5品位18.03%,回收率33.40%;低品位钽精矿Ta2O5品位3.21%,回收率9.00%;以及含Li2O 2.07%的云母精矿和高白度石英长石产品。实现了该锂多金属矿的综合回收。     

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。