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。     

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%。     

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。     

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。     

钛铁矿选矿试验

针对某钛铁矿品位低、嵌布粒度细、分选难度较大,原矿中含有大量弱磁性片状金云母,采用高梯度磁选方法无法有效去除等原矿性质,通过试验研究选择弱磁选铁-高梯度磁选、重选粗选抛尾-高梯度磁选、摇床精选的工艺流程,获得了钛精矿TiO₂品位和回收率分别为42.26%和72.40%,铁精矿铁品位和铁回收率分别为65.97%和54.98%的满意指标,为此类钛铁矿的选矿提供了一种可行途径。     

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.