云南某低品位铝土矿工艺矿物学研究

利用矿物定量解离系统(MLA)、X射线衍射对云南某低品位铝土矿矿石进行了工艺矿物学研究,查清了矿石的物质组成和赋存状态,着重研究了铝、铁、硅、钛的矿物组成、粒级组成、嵌布特征、矿物单体解离等工艺性质。原矿中主要矿物为一水铝石、针铁矿、钛铁矿等,脉石矿物为白云母、黏土等,一水铝石矿物主要与黏土、白云母和针铁矿共生。最后阐述了影响选矿工艺的因素及措施。     

陕西某钒钛磁铁矿尾矿工艺矿物学研究

陕西某尾矿库堆存有大量的钒钛磁铁矿尾矿,其中铁、钛矿物含量相对较高,具有很高的再回收利用价值。为给该尾矿的综合回收提供指导,从元素的化学组成及赋存状态、矿物组成及含量、主要矿物的解离特征、主要矿物的浸染粒度等方面,对尾矿进行了详细的工艺矿物学研究。结果显示:该尾矿全铁品位10.40%、TiO_2品位3.33%,V_2O_5品位0.10%,铁矿物主要为钛铁矿、磁铁矿和黄铁矿,其余为非金属矿物。矿石中主要矿物嵌布关系复杂,钛铁矿和磁铁矿的单体解离度低,钛铁矿多与脉石及磁铁矿结合成连生体,毗连型连生体相对较多。钛铁矿的粒度以中粗粒为主,磁铁矿的粒度以中细粒为主,粒度不均匀,在-0.037 mm粒级分布率较高。研究为该钒钛磁铁矿尾矿的合理开发利用提供了理论依据。     

云南某低品位铝土矿工艺矿物学研究

利用矿物定量解离系统(MLA)、X射线衍射对云南某低品位铝土矿矿石进行了工艺矿物学研究,查清了矿石的物质组成和赋存状态,着重研究了铝、铁、硅、钛的矿物组成、粒级组成、嵌布特征、矿物单体解离等工艺性质.原矿中主要矿物为一水铝石、针铁矿、钛铁矿等,脉石矿物为白云母、黏土等,一水铝石矿物主要与黏土、白云母和针铁矿共生.最后阐...     

攀西微细粒钛铁矿工艺矿物学研究

采用普通光学显微镜、扫描电子显微镜、能谱探针、X射线衍射分析技术和MLA矿物自动分析仪对红格微细粒钛铁矿进行了工艺矿物学研究。通过传统工艺矿物学研究手段和现代分析测试技术的有机结合,系统鉴定了矿石的矿物组成、结构构造、嵌布特征,统计了主要矿物的粒度特征。运用多种分析手段重点分析了产品中有益元素和有害元素的赋存状态。研究表明,钛铁矿大部分集中在-0.019 mm,主要矿物及含量分别为钛铁矿32.37%、钛磁铁矿3.7%,黄铁矿0.22%,脉石矿物主要为辉石和橄榄石,其总量可达63.71%。产品中主要矿物解离度依次为钛铁矿(75.84%)、黄铁矿(69.97%)、透辉石(80.51%)、橄榄石(81.51%)、斜长石(63.73%),钛铁矿解离充分,没有进一步磨矿的必要。选矿工作的重点应放在强化钛铁矿与辉石和橄榄石分离的方面,特别注意这种细粒级脉石在浮选过程中的行为研究。     

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。      

红格钒钛磁铁矿选铁尾矿工艺矿物学特征

通过多元素分析分析法、光学显微镜、扫描电镜、X射线粉体衍射仪、X射线荧光光谱分析等手段,对四川攀枝花红格钒钛磁铁矿选铁尾矿的矿物学特征进行了详细研究。结果表明,选铁尾矿由Fe、Ti、V、Cr、Cu、Ni、Mn、Ca、Mg、Si、Al、S等元素构成;选铁尾矿中的矿物主要是由金属矿物钛铁矿和普通辉石、斜长石等脉石矿物组成。选铁尾矿中主要矿物的矿物学特征与原矿中相同矿物的矿物学特征相似。选铁尾矿中的钛铁矿经过碎、磨、选后,晶体形态发生了变化,但内部结构变化并不大。选铁尾矿中的钛铁矿以粒径细小的粒状颗粒为主,粒级主要集中在0.074~0.053 mm区间内。选铁尾矿中的Fe随着粒度的减小先减少后增加,Ti则随着粒度的减小而增加。该研究结果为该矿区选铁尾矿的选冶工艺以及综合利用提供了重要参考依据。     

徐州市贾汪区汴塘镇马头山矿区钛铁矿赋存特征研究

马头山钛铁矿矿床类型主要为辉绿岩风化壳型钛铁矿床,分为风化残余坡洪积型和弱-半风化型2种。受地质构造、地形地貌等因素影响,矿石多分布于地表,风化较为严重,具有较高的开发利用价值。     

工艺矿物学研究在青海某铅锌矿应用

以青海某铅锌矿为研究对象,通过光谱半定量分析、化学多元素分析、物相分析、电子探针和粒度分析等手段对其进行了系统的工艺矿物学研究。查明了其矿物组成、化学组成、矿物共伴生关系、主要矿物粒度组成及嵌布特征。结果表明:该铅锌矿主要以方铅矿、铅黄、闪锌矿、铁闪锌矿为主,伴生银矿物则以浓(深)红银矿、脆银矿等自然银状态以及铅锌中共生状态存在;脉石矿物主要为石英、绢云母、绿泥石和高岭石。该研究结果可为该铅锌矿资源高效开发利用提供参考价值。     

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。     

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%。     

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     

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     

2014 second batch of rare earth quota released

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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.