重磁拉磁选机在某钒钛磁铁矿粗粒抛尾中的工业应用

陕西省洋县钒钛磁铁矿矿石品位极低,铁矿物赋存状态复杂,属于难磨难选类矿石,采用传统方法钛损失量极大。为了减少选厂选矿过程中钛资源的浪费,采用ZCLA新技术对该矿球磨排矿进行了抛尾工业试验,提出了洋县超贫钒钛磁铁矿选矿新工艺。研究结果表明:在给料粒度为-5 mm,采用ZCLA粗粒抛尾新技术,抛出的尾矿TiO_2品位仅为1.62%,抛尾率为36.36%,可直接抛废,减少了36.36%的选钛磨矿量;该工艺与筒式弱磁选粗粒抛尾工艺相比,尾矿TiO_2品位大幅降低,流程简单,且运行成本更低。     

攀西某铁矿选矿试验研究

采用3种流程方案(一段磨矿一段选别工艺流程、阶段磨矿阶段选别工艺流程和粗粒抛尾-一段磨矿一段选别工艺流程)对某全铁品位14.34%的铁矿进行选别。试验结果表明, 采用粗粒抛尾-一段磨矿一段选别-浮选脱硫工艺, 可以获得含铁62.85%、钒1.21%、铁回收率48.45%、钒回收率72.32%的优质铁精矿。该流程具有工艺合理、流程简单、生产成本低等优点, 是处理该铁矿较为合理的选矿工艺流程。     

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%。     

攀枝花白马选矿厂选钛粗渣铁、钛回收试验

攀枝花白马选矿厂年产130万t选钛粗渣,铁、钛品位低,暂未利用,直接排入尾矿库。为确定回收利用其中铁、钛资源的可行性,进行回收试验。采用新型ZCLA强磁设备对粗渣进行预先抛尾,可抛除产率40. 19%、Ti O2品位1. 48%的合格尾矿;抛尾精矿经一段磨矿—弱磁选除铁—除铁精矿二段磨矿—1粗2精弱磁选流程选铁,可获得产率8. 80%、TFe品位56. 63%、回收率37. 53%的铁精矿;除铁尾矿经强磁选—螺旋溜槽重选—磁选—浮选原则流程选别,可获得产率0. 47%、Ti O2回收率7. 18%的钛精矿。预测年产铁精矿11. 44万t、钛精矿0. 61万t。根据铁、钛选矿成本和市场行情计算,白马选钛粗渣中铁、钛具有一定的回收利用价值。     

攀枝花白马铁尾矿选钛工艺研究

借鉴以往试验成果,结合矿石性质,采用分级-一段磁选-螺旋溜槽重选-二段磁选-浮选新工艺对攀枝花白马选铁尾矿进行回收钛的选矿试验。经系统的条件试验,确定了各环节合适的工艺参数,最终获得了TiO2品位为46.23%、TiO2回收率为29.66%的钛精矿,同时可使原铁尾矿中残留的铁和硫得到综合回收。试验成果可作为白马铁矿建设钛选厂的技术依据。     

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。     

ZCLA选矿机在毕机沟钒钛磁铁矿尾矿综合回收铁、钛中的应用

毕机沟尾矿库堆存大量钒钛磁铁矿尾矿,其铁、钛矿物含量相对较高,具有很高的再回收利用价值。采用ZCLA选矿机进行1次粗粒湿式预先抛尾,可得到尾矿产率为39.16%,精矿铁、钛回收率分别为82.95%、93.22%的指标。ZCLA精矿弱磁选回收铁矿,强磁选—重选回收钛铁矿工艺流程,可获得铁精矿全铁品位为56.90%和钛精矿Ti O2品位为44.48%的合格产品,开创了一种钒钛磁铁矿尾矿库综合利用的新工艺。     

攀枝花白马表外矿铁资源回收试验

攀枝花集团矿业有限公司为有效回收利用白马表外矿中的铁资源,在分析原矿性质的基础上,对其进行了预先抛尾试验和选铁试验。试验结果表明:原矿经干抛+湿抛预先抛尾,可获得铁品位为28.11%、回收率为71.14%的抛尾精矿,同时抛除了产率为57.66%、含铁8.38%的尾矿;抛尾精矿经两段阶磨阶选选铁,可获得铁品位为55.52%、回收率为75.62%的优质铁精矿,尾矿含铁11.11%,综合指标较好,初步实现了对白马表外矿铁资源的有效回收,为高效开发利用攀枝花白马表外矿提供了技术依据。     

湖南某低品位铁矿石高压辊磨—预选抛尾试验

湖南某低品位铁矿石TFe品位24. 10%,磁性铁占总铁的34. 56%。铁主要以磁铁矿和赤(褐)铁矿的形式存在,硫、磷含量较低。为实现"能抛早抛",对矿石块矿干选抛尾精矿进行高压辊磨—预选抛尾试验。结果表明,相比高压辊磨开路流程,闭路流程辊磨产品-1 mm粒级含量高31. 34个百分点,达63. 59%,粒度更细;闭路辊磨产品中磁粗选—强磁扫选粗粒湿式预选抛尾可获得产率82. 71%、TFe品位27. 28%、回收率93. 56%的预选精矿,抛除产率17. 29%、TFe品位8. 98%、回收率6. 44%的合格尾矿,抛尾效果明显,可有效降低后续磨选流程负荷和选矿成本。     

低品位钒钛磁铁矿预选抛尾工艺试验

重钢西昌矿业有限公司太和矿区为综合回收利用低品位钒钛磁铁矿,进行了预选抛尾干式磁滑轮抛尾、粉矿干式抛尾、粗粒湿式磁选抛尾3种工艺流程试验。经对各流程选别指标的分析对比,并结合现实生产中的选矿工艺流程,提出了高压辊磨超细碎+粗粒湿式磁选抛尾的新工艺,其矿石入选品位可提高8～12个百分点,铁回收率可达到60%～70%,技术指标较好,为工业设计提供了参考依据。     

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     

China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.     

Rare Earth Application in Steel in China

<正>China has rich rare earth resources.Output of rare earth and steel in China ranks the top first in the world.However,there is still certain distance between the steel produced in China and developed countries from the point of varieties and quality.China still has to import some types of steel.Improving the quality should be emphasiZed in future development of steel industry in China.Rare earth can be used to upgrade traditional steel     

Current situation and future trend of China rare earth luminescent materialindustry(continued)

<正>Developing ecological lighting source The world is facing the big problem of energy shortage today and the contradiction between economy development and environmental protection is worsened.Therefore,people are more likely to choose an ecological light source that is more energy efficient and environmental friendly.The choice provides great opportunity for the development of rare earth optical material industry in China.The concept of green lighting positions rare earth luminescent material as a leading player in illumination market.The light source of both rare earth luminescent lamp and LED lamp is ecological and energy saving.This is why     

稀散金属产业的观察与思考

分析了近年来国内外稀散金属产业的生产、应用、资源与市场状况.铟锡氧化物靶材、砷化镓晶片、锗红外材料、铼高温合金和硒在电解锰及玻璃的应用等已成为稀散金属的主要应用领域.稀散金属的产量快速增长达到历史高位而导致了市场的失衡.以GaInP_2/GaAs/Ge,CIGS和CdTe为代表的非硅系太阳能电池是稀散金属的新兴应用领域,将给稀散金属带来日益增长的需求.