坦桑尼亚某海滨锆钛砂矿工艺矿物学研究

利用矿物解离分析仪(MLA)、能谱检测、扫描电镜、体视显微镜等分析手段,分析坦桑尼亚某海滨锆钛砂矿的化学组成、粒度组成、有价矿物的选矿工艺特性等。结果表明,矿砂中有价矿物种类较多,主要有钛铁矿、锆石、金红石和白钛石、独居石等。由于有价矿物种类多,物理性质复杂,精选分离具有一定的难度。矿砂粒度主要在100~500#m,有价矿物的粒度小于320#m,呈细粒分布,粒度均匀,粒度范围较窄。钛铁矿、白钛石、金红石、锆石、独居石等目的矿物基本呈单体颗粒,不必磨矿即可分选。原砂中钛主要分布于钛铁矿、金红石、白钛石,理论回收率为88%,原砂中锆主要分布于锆石,理论回收率约98%。     

某滨海锆钛砂矿工艺矿物学研究

利用矿物解离分析仪(MLA)、能谱检测、扫描电镜、体视显微镜等分析手段,对某滨海锆钛砂矿的化学组成、粒度组成、有价矿物的选矿工艺特性等进行了详细研究。结果表明：矿砂中有价矿物种类较多,主要有钛铁矿、锆石、金红石和含铁金红石、独居石等。由于有价矿物种类多,物理性质复杂,精选分离具有一定的难度;矿砂中砂粒粒度主要在0.10~0.50mm之间,有价矿物的粒度小于0.32mm,呈细粒分布,具有粒度大小均匀,粒度范围较窄的特点。此研究结果为该砂矿资源的选矿方案提供了依据。     

某钛铁矿石的工艺矿物学研究

矿石中金属矿物主要为磁铁矿、赤铁矿、磁赤铁矿、钛磁铁矿及钛铁矿等，磁铁矿是矿石中的主要铁矿物，赤铁矿和磁赤铁矿为磁铁矿的次生矿物，一般分布于磁铁矿中；钛铁矿物种类较多，主要为钛磁铁矿，其次为钛铁矿。磁铁矿和钛磁铁矿以粗粒浸染状嵌布为主，钛铁矿以细粒浸染状嵌布为主，磁铁矿与钛铁矿嵌布关系密切，矿物颗粒结合紧密，这种构造导致2种矿物完全解离困难，尤其是以薄片状、格子状分布于磁铁矿中的钛铁矿无法解离，这种现象会影响精矿铁品位以及钛的回收率。     

某含钛矿石中钛的赋存状态研究

为研究某含钛矿石是否具有综合利用价值,通过光学显微镜、X射线衍射仪、扫描电镜及矿物自动分析仪、电子探针等分析技术,对其物质组成、目的矿物嵌布特征、有价元素赋存状态等开展了系统的研究。结果表明,该矿石为含铁、钛的闪长岩类,矿石中TiO₂品位为2.27%、TFe品位为11.36%,矿石中的铁品位低,没有达到铁矿石的最低工业品位。矿石中的TiO₂主要赋存于钛铁矿及钛铁闪石中,分布率分别为40.02%和44.75%,占总分布率的84.79%;少量分布在榍石、金红石和磁铁矿（赤铁矿）中,分布率分别为7.93%、5.67%和1.59%,其中钛铁矿及金红石的矿物含量仅为1.86%和0.13%。矿石中金红石含量低,多与榍石、钛铁矿等连生,粒度微细,金红石中含有钙、铁、硅等杂质元素,这会直接影响金红石精矿的品位及回收率,采用阶磨阶选流程及重选、磁选及浮选的联合工艺,可有效回收矿石中的有用矿物。      

某钛铁矿石的工艺矿物学特征

通过对矿石成分和结构构造、钛铁矿的产出形式和蚀变类型、钛铁矿的能谱微区成分和嵌布粒度等的分析,总结出影响钛铁矿选矿指标的主要矿物学特征,并对钛铁矿分选性能的影响因素进行了分析。最终查明矿石中钛的赋存状态较为分散,其中钛铁矿常零星散布在脉石中,部分沿钛磁铁矿边缘分布,且普遍沿表面、边缘、粒间及裂隙发生榍石化、金红石化及赤铁矿化,粒度较为细小。由于氧化作用的影响,部分钛铁矿与榍石镶嵌关系过于复杂将是影响钛精矿质量的主要原因;即使采用细磨工艺,矿石中的钛铁矿亦很难获得较充分的解离。研究成果为钛铁矿的选矿工艺研究提供了指导。     

白云鄂博铁矿石工艺矿物学研究

为了更好地开发利用白云鄂博铁矿石资源,对白云鄂博铁矿石进行了工艺矿物学研究。结果表明：①矿石中的有用矿物主要为磁铁矿、赤铁矿、稀土矿物,脉石矿物主要有萤石、石英、钠辉石、方解石、长石等。②矿石中的主要铁矿物为磁铁矿,以碎屑状及角砾状为主,占磁铁矿总量的70%以上,与钶铁矿、磷灰石、独居石、重晶石等紧密共生,偶见粗粒块状磁铁矿集合体;矿石中的赤铁矿多紧密镶嵌在碎屑状及角砾状磁铁矿中构成铁矿物集合体。③独居石是矿石中分布最广的稀土矿物,呈粒状,与周边其他矿物紧密共生、镶嵌关系复杂。④矿石中的脉石矿物均呈不规则状或他形粒状,脉石矿物间以及脉石矿物与有用矿物间嵌布关系均非常密切,萤石是分布最广的脉石矿物,是细小稀土矿物颗粒的包裹矿物之一。⑤矿石中铁矿物的嵌布粒度均非常细小,磁铁矿较赤铁矿略粗,嵌布粒度大于10 μm的赤铁矿、磁铁矿分别仅占40%和54%。⑥由于矿石中各矿物的嵌布关系复杂,嵌布粒度微细,单体解离困难,因此,宜采用深度还原工艺使微细粒铁矿物聚集长大后再进行回收。     

马拉维含难分离赤铁矿的钛锆粗精矿工艺矿物学及分离新技术的研究

马拉维难选钛锆粗精矿中钛矿物分布率48%左右,但由于铁、钛矿物较复杂,可回收钛矿物种类多,磁性变化大,同时存在磁性、密度与钛铁矿相似的赤铁矿及一些比重较大的磁性脉石如石榴石和角闪石等,磁选时,赤铁矿、石榴石和角闪石均会进入钛精矿中而影响钛精矿品位,因此,采用常规磁选或重选方法很难获得合格钛精矿。基于MLA技术系统工艺矿物学研究基础上,根据矿物组成及各矿物之间的特性差异,针对马拉维某海滨砂钛锆粗精矿,利用赤铁矿还原焙烧后磁性增强、以及磁性脉石与钛矿物之间有电性差的特点,采用湿式弱磁选—干式磁选（—还原焙烧—湿式弱磁选）—电选—重选联合工艺流程,可有效分离易进入钛精矿中的赤铁矿及磁性脉石。最终获得TiO₂含量49.17%、回收率66.36%的钛精矿,ZrO₂含量分别为65.04%、60.78%和55.79%的三个锆精矿,锆精矿合计回收率89.28%;同时综合回收了金红石、磁铁矿和稀土。本研究解决了钛锆粗精矿中钛铁矿与赤铁矿、磁性脉石矿物难分离的关键技术问题,可为该类钛锆资源的有效利用提供技术途径。      

国外某滨海砂矿锆钛高效回收选矿试验研究

国外某海滨砂矿中TiO2含量和ZrO2含量分别达到了7.55%和0.74%，其中钛主要以钛铁矿、金红石等工业可利用矿物形式存在，锆主要以锆英石形式存在，嵌布粒度范围主要集中在0.04-0.16mm，属于物理选矿适宜回收的粒度范围，是典型的锆钛共生砂矿。本论文以国外某滨海砂矿为研究对象，进行了工艺矿物学和选矿小型试验研究，采用“锆钛矿物重选预富集-钛铁矿与非磁性锆钛矿物磁选分离-锆钛矿物重选再富集-金红石与锆英石干式磁电选分离”的全工艺流程，分别获得了钛品位大于52%的钛铁矿精矿、钛品位大于77%含铁金红石精矿、钛品位大于75%金红石精矿以及锆品位大于63%的锆英石精矿。钛锆回收率分别达到了81%和74%，实现了该矿床中钛锆资源的高效利用，可为同类矿山的开发利用提供借鉴。     

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。     

坦桑尼亚钒钛磁铁矿资源评价基础研究

正坦桑尼亚里干加(Liganga)钒钛磁铁矿资源属于钒钛磁铁矿富矿,矿石中主要金属矿物为钛磁铁矿(包括钛磁赤铁矿、钛赤铁矿)和钛铁矿,主要脉石矿物为尖晶石和绿泥石等。该矿石中有利用价值的是铁、钛、钒,其中TFe含量为51.29%,V2O5含量为0.42%。矿石中约90%的铁和钒赋存于钛磁铁矿中,对矿石选铁、钒,就是选钛磁铁矿。矿石中钛磁铁矿(包括钛磁赤铁矿、钛赤铁矿)的矿物量达到了72.33%,比中国攀西钒钛磁铁矿矿石中钛磁铁矿含量(24%~     

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.     

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     

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.     

Brief news

正Corun invested another 50 million yuan in power battery for HEV Hunan Corun announced on 27 June that they had signed the cooperation agreement to jointly built Corun(Shaoxing)Autos Power Battery System Co.,Ltd.in Shaoxing Binhai New City.According to the announcement,total registered     

铜熔炼中锍品位对杂质元素分配行为的影响

借助于多相、多成分系统中平衡计算的手段，开发出微量元素砷、锑、铋及伴生元素铅、锌等在铜熔炼中分配行为的计算机模型。利用该模型对铜熔炼过程进行计算机模拟，分析了冰铜品位对砷、锑、铋、铅和锌等杂质元素的分压、活度系数及它们在冰铜、炉渣和气相中分配率的影响，并讨论其热力学分析结果对生产实践的指导意义。     

China rare earth market review

正November 1~10,2014Chinese rare earth market was still inactive.Demand for rare earth products was weak.Consumers took a wait-and-see attitude for lower price.As it was an off season for rare earth products,it was expected that prices of rare earth could continue turbulence at the bottom in short terms.Due to a sharp drop,demand for rare earth from downstream recovered.Affected by new energy vehicles,wind powder and energy-efficient appliances,production of rare earth permanent     

China rare earth market review

正August 1~10,2014 There was some good news in rare earth industry recently.Restructuring plans of rare earth groups led by Baotou IronSteel Group and Xiamen Tungsten Group respectively have been approved by MIIT.And rare earth storage policy,which had been expected for a very long time,has been launched officially.Pushed by the good news,rare earth price started to rebound since August 5.Price of didymium oxide and dysprosium oxide rose about 1% to 2%,averagely.About 10% of     

China rare earth market review

正July 1~10,2014Due to weak demand from downstream industry and slow transactions,rare earth market remained weak and price of rare earth products continued to decline.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,