攀枝花太阳湾钒钛磁铁矿石选矿试验研究

攀钢朱兰采场经数十年的开采,产能逐步衰减。为了确保攀枝花本部矿区的可持续发展,对朱兰采场北延矿体——太阳湾矿段的类似矿石开发利用工艺进行了试验研究。结果表明,矿石TFe、TiO₂、V₂O₅品位分别为21.49%、10.54%、0.17%,属高硫、酸性、低铁高钛型原生钒钛磁铁矿石;矿石经两阶段磨矿弱磁选,可获得产率为18.56%、TFe品位为54.06%、TiO₂品位为11.66%、TFe回收率为46.69%的铁精矿;弱磁选铁尾矿经过两段强磁选+浮选流程处理,可获得产率为9.54%、TiO₂品位为47.00%、TiO₂回收率为42.54%的钛精矿;太阳湾钒钛磁铁矿石具有较高的开发利用价值,开发利用太阳湾矿石资源可以提高攀枝花本部资源的保障能力,延长矿山的稳产服务年限。     

印尼某海滨铁砂综合利用探索试验研究

对印度尼西亚某海滨铁砂进行了选矿探索试验研究。试验结果表明, 该矿石主要金属矿物为钛磁铁矿、钛铁矿等, 原矿石不磨直接进行分选, 采用磁选-重选联合工艺, 可获得产率23.46%, TFe品位58.08%、含TiO₂ 12.48%、含V₂O₅ 0.57%, TFe回收率69.70%的铁精矿, 有效回收了海滨铁砂中的铁、钛及钒。     

应用高压辊磨机的红格钒钛磁铁矿选矿工艺研究

采用原矿高压辊磨-粗粒湿式磁选抛尾-阶段磨矿、阶段弱磁选选铁,选铁尾矿阶段弱磁选-强磁选-浮选选钛工艺流程对攀西红格低品位钒钛磁铁矿进行选矿试验,获得了铁品位为57.41%、铁回收率为52.88%的铁精矿和TiO₂品位为47.87%、TiO₂回收率为39.31%的钛精矿。研究表明：通过采用高压辊磨技术,可使选铁过程和选钛过程磨选量分别减少34.18%和10.19%。     

选冶联合回收风化型钒钛铁矿试验研究

针对某风化型钒钛铁矿中铁矿物与钛矿物嵌布关系十分密切、密度和比磁化系数接近、选矿难以分离的特点, 采用选冶联合工艺进行了回收试验研究。结果表明, 利用磁选实现了钒钛铁矿物的预先富集, 对钒钛铁粗精矿进行闪速磁化焙烧拉大了铁矿物与钛矿物的比磁化系数差距, 为选矿分离创造了条件。选冶联合工艺全流程试验取得了TFe品位61.06%、V₂O₅含量1.03%, TFe和V₂O₅回收率分别为73.12%和76.43%的含钒铁精矿和TiO₂品位50.96%、回收率40.40%的钛精矿。该工艺实现了钒、钛、铁的综合回收。     

陕西某钛铁矿选矿试验

针对陕西某低品位原生钛铁矿石性质的特点,采用弱磁选优先选别钛磁铁矿、弱磁选尾矿高梯度磁选预抛尾、预选粗精浮选脱硫、浮选选钛铁矿流程进行了选钛试验研究。最终获得了铁品位为52.46%、TiO₂品位为11.35%、铁回收率为27.63%、TiO₂回收率为16.41%的攀西式钛磁铁精矿,以及TiO₂品位为46.28%、TiO₂回收率为45.30%的钛铁精矿。     

某地区低品位铁矿石选矿试验研究

对某低品位铁矿石进行了选矿试验研究。通过对矿样进行探索试验, 最终以阶段磨矿阶段磁选-磁选铁精矿一粗一精浮选脱硫的联合流程, 获得铁精矿产率11.75%、品位63.21%、回收率63.53%的指标。其杂质含量低于工业指标要求, 并且矿物中V₂O₅在铁精矿中有较好富集, 品位为0.83%, 回收率大于80%。     

云南某低品位钛铁矿选矿试验研究

对云南某低品位钛铁矿进行了选矿试验研究, 采用弱磁与强磁相结合的方案进行抛尾, 可抛掉TiO₂品位为1.18%、产率为81.11%的尾矿, 获得TiO₂品位为12.38%、TiO₂回收率为64.50%的抛尾精矿; 抛尾精矿采用高梯度磁选预选获得TiO₂品位为22.29%、对原矿回收率为57.16%的强磁选精矿; 以MOH为钛铁矿捕收剂, 采用一粗三扫三精浮选流程对高梯度磁选精矿进行浮选, 最终可获得TiO₂品位为45.46%、TiO₂总回收率为49.31%的钛铁矿精矿。     

河北某磁铁矿石选矿试验

河北某磁铁矿石铁品位为38.54%,主要有用矿物为磁铁矿,为开发利用该矿石,对其进行了选矿试验研究。结果表明:原矿经干式磁选抛尾—湿式粗粒磁选抛尾—磨矿—1粗1精弱磁选流程选别,可获铁品位65.67%、铁回收率83.95%、磁性铁回收率96.09%的铁精矿,为开发利用该矿石提供了技术依据。     

高压辊磨—弱磁选工艺处理白云鄂博西矿区低品位铁矿

白云鄂博西矿区低品位铁矿石存在入选品位低、选矿利用成本高等问题,为合理利用该铁矿资源,在原矿矿石性质研究的基础上进行了选矿试验研究。结果表明,原矿采用干式磁选预先抛尾—高压辊磨—湿式磁选抛尾—湿式弱磁选工艺处理该矿石,可获得TFe品位66.09%、回收率63.25%、磁性铁回收率94.82%的合格铁精矿。试验结果为该低品位铁矿的高效开发利用提供参考依据。      

某低品位钒钛磁铁矿选铁试验研究

采用粗粒抛尾-阶段磨矿、阶段弱磁选工艺对某低品位钒钛磁铁矿进行了选铁试验研究。结果表明：原矿在10~0 mm粒度下经双层永磁辊式磁选机进行弱磁选+强磁选粗粒抛尾,可以抛出产率为9%左右的合格尾矿,铁在粗粒尾矿中的损失仅为3%左右;预先抛尾获得的粗粒精矿在一段磨矿细度为-200目占50%、二段磨矿细度为-200目占85%的条件下,通过两段弱磁选,可获得铁品位为57.08%、TiO₂含量为11.92%、铁回收率为53.16%的铁精矿。     

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     

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     

2014 second batch of rare earth quota released

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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