国外某高品位钒钛磁铁矿综合回收选矿试验研究

国外某钒钛磁铁矿中主要有价元素TFe、TiO_2、V_2O_5含量分别达47.20%、18.68%、0.63%。根据钒钛磁铁矿矿物的选矿特性,采用弱磁选选铁-选铁尾矿重选选钛-重选尾矿再用"SLON强磁-浮选"回收细粒钛铁矿的综合回收工艺,获得铁精矿TFe品位60.03%、回收率70.03%;V_2O_5品位1.08%、回收率94.39%;重选钛精矿TiO_2品位48.17%、回收率27.64%;浮选钛精矿TiO_2品位46.64%、回收率16.12%。试验成果为评价该矿产资源综合利用的可行性提供了选矿技术支撑。     

攀枝花某选铁尾矿窄粒级选钛试验

攀枝花密地选钛厂以钒钛磁铁矿选铁尾矿为原料进行钛的回收。选钛原料粒度分布宽,Ti O_2品位9.54%,钛主要以钛铁矿的形式存在。针对原粗、细分级—两段强磁选—浮选原则流程选别指标差的问题,对选钛原料进行窄粒级选钛试验。结果表明:选钛原料经1 mm隔渣后,分级为粗粒级(+0.1 mm)、细粒级(0.038~0.1 mm)和超细粒级(-0.038 mm),对粗粒级和细粒级采用磁选—浮选原则流程进行选钛试验,最终可分别获得产率5.05%、Ti O_2品位47.32%、回收率25.05%的粗粒钛精矿和产率6.41%、Ti O_2品位47.29%、Ti O_2回收率31.76%的细粒钛精矿;超细粒级经悬振—2次粗选浮硫—1粗3精选钛开路流程试验选别,可获得产率0.53%、Ti O_2品位47.13%、回收率2.60%的超细粒钛精矿。各粒级钛精矿合并为Ti O_2品位47.30%、回收率59.41%的合格综合钛精矿,相比原工艺流程,Ti O_2回收率提高24个百分点左右,说明窄粒级选钛能显著加强钛铁矿的回收,大幅度提高钛精矿回收率,实现了选铁尾矿钛的高效回收利用。     

徐州某钛铁矿石可选性试验

徐州MH钛铁矿石铁品位10.45%、Ti O2品位3.54%,钛磁铁矿(含磁铁矿)和钛铁矿中的铁占总铁的25.45%,84.75%的钛赋存于钛铁矿和硅酸盐中,主要可以回收的有用矿物为钛铁矿和钛磁铁矿,嵌布粒度较细。为给该钛铁矿石开发利用提供参考,对其进行可选性试验。通过采用原矿预选抛尾—阶段磨矿—磁选—重选原则流程对钛铁矿和钛磁铁矿进行回收,在抛尾粒度-3 mm,一段、二段磨矿细度-0.076 mm分别占60%、90%时,可获得Ti O2品位47.38%、含铁33.70%,Ti O2回收率13.34%的钛精矿及铁品位40.91%、含Ti O220.21%,铁回收率10.63%的高钛铁精矿,说明该钛铁矿石可选性较好,且综合指标较好。试验结果可作为该钛铁矿石开发利用的依据。     

山西某金红石矿选矿试验研究

山西某金红石矿采用重选主干流程进行选别,精矿产品TiO2品位为90%左右,但金红石(TiO2)的回收率不足50%。为提高金红石的选矿回收率,开展了以浮选为主干流程的选矿工艺研究。确定的选矿方案为两次浮选抛尾─金红石浮选(一次粗选、两次精选)─浮选精矿除杂(弱磁选—强磁选—重选)。全流程试验结果表明:采用浮选主干流程大大提高了精矿TiO2的回收率,总精矿TiO2回收率为69.25%,金红石矿物的回收率达到86.42%,其中精矿1含TiO289.58%、TiO2回收率46.84%;精矿2含TiO280.53%、TiO2回收率22.41%。同时综合回收了磁铁矿和钛铁矿。     

从某铁尾矿中回收钛的试验

昆钢集团某铁矿选铁尾矿中富集了部分钛,Ti O_2含量8.17%,钛矿物嵌布粒度较细,原采用单一重选生产流程回收钛,回收率仅15%左右。通过选矿工艺试验确定了高梯度强磁选—摇床重选流程。生产实践结果表明,新生产流程钛精矿品位46.00%,回收率相比原流程提高了20个百分点,经济效益显著,提高了资源利用率。     

国内某内陆含粘土钛铁砂矿选矿试验研究

国内某钛铁矿为内陆砂矿,砂矿层类型为风积型、坡积型和残积型三种类型。其特点是品位低、含泥量高;主要有价矿物是钛铁矿、钛磁铁矿;钛铁矿部分出溶少量赤铁矿和磁铁矿,钛铁矿和钛磁铁矿都是钛铁矿和铁矿物的固溶体。试验采用擦洗脱泥-重选-磨矿-磁选-重选联合流程,得到TiO2品位46.50%的钛铁矿精矿,钛铁矿产率1.44%,回收率36.69%;同时得到产率0.88%,TFe56.90%,TiO2 14.28%的钛磁铁矿精矿。     

甘肃某低品位难选钛铁矿磁电选矿试验研究

针对甘肃某含Ti O213.38%、TFe 21.12%的钛铁矿,进行了系统选矿试验研究。试验结果表明,在磨矿条件下,采用重选—磁选—电选联合流程,可获得钛精矿产率13.35%、Ti O2品位45.97%、回收率45.46%的较好试验指标。该试验研究为合理开发此类钛铁矿提供技术思路。     

太和钒钛磁铁矿选钛工艺研究

本文介绍了用重选—磁选—浮选—电选流程对太和铁矿的选铁尾矿进行综合回收钛铁矿的试验。取得了较好指标:最终钛铁矿精矿品位含TiO_2 47%以上(?)回收率60%以上(对磁尾),结果表明:重选—磁选—浮选—电选流程是回收太和铁矿磁选尾矿中钛铁矿的有效流程。     

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。     

某风化粘土型钛矿工艺矿物学研究

为综合回收利用风化残坡积型钛矿中有价金属,探讨钛等有价元素的可回收性,采用传统工艺矿物学研究方法对国内某风化粘土型钛矿的矿石特性进行了系统的研究,并分析了影响选矿工艺的因素,提出了可行的选矿工艺方案。研究结果表明,该矿TiO₂品位4.5%,主要含钛矿物为钛铁矿、白钛石和钒钛磁铁矿,矿石含泥量近80%。钛铁矿多为单体,部分氧化蚀变为白钛石,均被粘土矿物包裹或与其连生,钒钛磁铁矿为次要回收矿物,其中包含部分呈固溶体分离的钛铁矿片晶。矿石中钛分散较严重,采用物理选矿分选钛的理论回收率为48%左右,铁理论回收率仅为4%左右。结合矿石特点与工艺矿物学研究结果,该矿石选矿试验可采用“擦洗脱泥-重选-磁选”联合流程,在重选前应采用强力搅拌脱泥以消除“粘结效应”,继而采用重选预先抛尾后再磁选,之后利用强磁选、摇床精选等手段进一步提高精矿品位。该研究为选矿回收该矿床中有价金属提供了方向性指导。      

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     

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     

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.     

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.     

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