陕西某钒钛磁铁矿选铁尾矿工艺矿物学研究

通过X射线荧光光谱分析、X射线衍射分析、光学显微镜观察、多元素化学分析、扫描电子显微镜观察等手段,对陕西洋县钒钛磁铁矿选铁尾矿的矿物学特征进行了研究。结果表明,该尾矿粒级主要集中在+75μm区间内,主要由Si、Al、Fe、Ca、Mg、Na等元素组成;尾矿中的主要矿物为斜长石、角闪石、辉石等脉石矿物,以及少量的钛铁矿等金属矿物;TiO_2主要分布于-75μm区间内,Fe_2O_3、Al_2O_3和SiO_2则主要分布于+75μm区间内,而且各组分在不同粒径内含量也不同,其中TiO_2和Fe_2O_3的含量随着粒径的减小先升高后降低,Al_2O_3和SiO_2的含量随着粒径的减小先降低后升高。根据工艺矿物学研究结果,推测金属矿物解离度低和弱磁选矿可能是导致钛、铁回收率低的主要原因。     

某选铜尾矿的工艺矿物学研究

为查明某选铜尾矿的综合利用价值,对其进行了工艺矿物学研究。采用了显微镜鉴定、化学分析、X射线衍射分析、扫描电镜能谱分析等手段,查明了某地铜尾矿矿物组成,主要矿物的粒度特征和嵌布特征。结果表明,该尾矿的主要有价元素为铜、铁和钼且其品位分别为0.086%、3.25%和0.011%,对应的回收矿物为黄铜矿、磁铁矿-磁赤铁矿和辉钼矿的相对含量分别为0.17%、0.8%和0.02%。工艺矿物学的研究,对该尾矿的开发利用提供了科学依据。     

云南某半风化钛铁矿工艺矿物学研究

运用多元素分析、X射线衍射分析、扫描电镜和镜下鉴定等手段,对云南某半风化钛铁矿进行了详细的工艺矿物学研究。研究该半风化钛铁矿的化学组成、主要矿物组成、粒度组成、嵌布特征及矿物单体解离等工艺性质。结果表明,原矿中金属矿物主要为钛铁矿、磁铁矿和赤铁矿;非金属矿物主要为斜长石、辉石,少量钾长石。该研究为此类半风化钛铁矿的合理开发利用提供了参考依据。     

湖北某金铜选厂尾矿工艺矿物学研究

通过化学多元素分析、偏光显微镜鉴定及X衍射分析等手段,对湖北某金铜选厂尾矿的矿物学特征进行详细研究。结果表明,尾矿的化学成分以Si O2和Ca O为主,含少量Fe。尾矿主要由方解石和石英组成,含少量黄铜矿、黄铁矿及磁铁矿等金属矿物,与化学成分一致。对尾矿进行粒级筛分,尾矿粒度较细,主要集中在0. 045 mm区间内,约占49. 2%,且主要有用元素Fe、Cu、S、Au、Ag也主要集中在0. 045mm区间内,分布率分别为56%、33. 1%、66. 9%、28. 4%及50. 1%。此外,还对尾矿中的主要金属矿物进行了单体解离度统计分析,黄铜矿、黄铁矿单体解离度变化不大;不同粒级脉石矿物的单体解离度变化不大,均在95%以上。     

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。     

滇南地区某钛磁铁矿工艺矿物学研究

这是一篇工艺矿物学领域的论文。滇南地区某钒钛磁铁矿矿石不仅有较高的铁、钛,而且伴生钪元素。为实现矿石综合利用,对该矿进行了工艺矿物学研究。采用X射线荧光光谱分析及化学分析手段,查明了矿石化学成分;利用X射线衍射分析仪（XRD）、扫描电镜与能谱分析（SEM-EDS）、电子探针（EPMA）等方法,研究了矿物的工艺特征,重点考查了铁、钛元素的赋存状态。研究结果表明：矿石中铁的主要载体矿物为钛磁铁矿、角闪石,其次为钛铁矿;钛的载体矿物主要为钛铁矿,少量赋存于榍石中;钪主要分布在角闪石中。元素配分结果表明,铁、钛的理论品位分别为71.02%、47.40%,理论回收率分别为40.52%、66.48%。分析了影响选矿回收指标的矿物学因素,为后续选冶工艺提供了理论支撑。     

承德地区某铁磷矿工艺矿物学研究

通过化学分析、光学显微镜、X射线衍射分析及矿物自动解离系统(MLA)等分析方法,对承德地区某铁磷矿的化学成分、矿物组成、结构构造、嵌布关系、矿物粒度组成及矿物解离分析、有益元素赋存状态等方面进行了系统的工艺矿物学研究。矿石中有用元素主要为磷、铁、钛,其中磷主要赋存在磷灰石中,较易解离和回收;铁主要赋存在钒钛磁铁矿中,大部分易于解离和回收,小部分较难回收;钛主要赋存在钛铁矿中,以单颗粒或集合体形式分布的易于解离和回收,而以片晶形式分布在磁铁矿中的则难以解离将进入铁精矿。     

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。     

青海榴辉岩型金红石矿工艺矿物学研究

通过光学显微镜、多元素分析分析法、电子探针、X射线粉体衍射仪等手段,对青海榴辉岩型金红石矿的矿物学开展了详细的研究,查明了该矿主要由Fe、Al、Mg、K、Na、Mn、Si、S、O等元素组成;查明了该矿中的矿物主要是由铁铝榴石、绿辉石、角闪石、绿泥石和金红石等矿物组成,其中石榴子石含量为56.5%,绿辉石含量为24.2%;查明了矿石的结构构造,并进行了主要矿物工艺矿物粒度测定。研究结果表明,矿石中钛主要以金红石的形式存在,嵌布粒度为中细粒嵌布,被石榴子石和绿辉石包裹,造成金红石选矿回收率较低,但石榴子石和绿辉石颗粒较粗,且大部分金红石与石榴子石和绿辉石之间的接触较为平直,有利于金红石的单体解离,选矿回收难度不大。该工艺矿物学研究为青海榴辉岩型金红石矿的选冶工艺及其综合利用提供了重要的参考依据。     

宁乡某高岭土的工艺矿物学研究

高岭土的工艺矿物学特征直接决定它的工业用途。本试验采用化学多元素分析、X射线衍射(XRD)、X射线荧光光谱分析(XRF)、能谱分析(EDS)、扫描电镜(SEM)等一系列分析检测手段,对宁乡高岭土的有益矿物、有害矿物和脉石矿物的嵌布特性、共生关系及赋存状态等进行了系统的研究。高岭土中的高岭石主要呈绒毛状,少数呈片状。主要着色杂质成分铁和Ti O2的含量分别0.59%和0.92%。铁主要以赤铁矿的形式存在,占铁总量的72.64%;Ti O2主要以锐钛矿的形式存在,含量高达96.41%。     

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.