简介：2017年3季度,澳大利亚稀土矿业公司Lynas（莱纳斯）再度报喜,其运营状况和业绩继续因稀土价格上涨受益。Lynas日前发布消息称,在截至2017年9月的三个月内（2017年第3季度）,公司收获了创纪录的销售收入,以及创纪录的产量和现金流。莱纳斯报道称,2017年3季度,公司镨钕（Pr、Nd）产量1442吨,同比增长22.6%,

简介：Er3+/Yb3+codopedzincateBaGd2ZnO5phosphorsweresynthesizedviaatraditionalsolidstatereaction.ThecrystalstructureandphasepuritywerecheckedbymeansofX-raydiffraction(XRD),andtheresultsshowedthatpurephaseBaGd2ZnO5phosphorswithvariousEr3+,Yb3+concentrationswereobtained.TheinfluenceofEr3+andYb3+dopingconcentrationsonthegreenandredupconversionemissionswasstudied.Itwasfoundthatbothgreenandredupconversionemissionsunder980nmexcitationweretwo-photonprocessesindependentfromtherareearthdopingconcentrations.However,theupconversionluminescenceintensitiesgreatlydependedontherareearthdopingconcentration.Furthermore,thepopulationprocessesofupconversionluminescenceandthequenchingmechanismswereanalyzed.Thetemperature-dependentgreenupconversionluminescencewasstudied,andthetemperaturequenchingprocessoftwogreenupconversionemissionswasmodeled.Thethermalquenchingprocessesofthegreenupconversionemissionscouldbewellexplainedbythemodelweproposed.

简介：湖南有色控股集团核心企业柿竹园有色金属有限责任公司2008年出口“柿竹园”牌铋冶炼产品517t，创汇1588万美元。

简介：金川集团公司20万t铜项目倾动炉系统于近日顺利点火并产出第一批产品，标志着该工程取得了阶段性胜利。

简介：针对某铜尾矿粒径较细，仅采用量筒装置无法准确模拟尾矿的沉降隋况。通过直径1m的半工业浓密试验机对铜尾矿进行浓密试验，研究了单位面积处理量对溢流水固含量的影响，泥层高度对底流浓度的影响，得出了最佳试验参数，为深锥浓密机选型提供了参考依据。

简介：本文介绍松桃硫化锌矿的矿石性质、试验流程、药剂制度、试验指标及今后投产经济效益的估算,对该贫困县的经济发展将起到较大的推动作用。

简介：PolycrystallineGd2(MoO4)3:Dy3+phosphorshavebeensynthesizedbyhightemperaturesolid-statereactionmethod.ThephosphorswerecharacterizedwithX-raydiffractometer,thermogravimetricanalysisanddifferentscanningcalorimeter,scanningelectronmicroscopy,andphotoluminescencespectrofluorimeter.Severalpeaksat351,389,425,452,and472nmappearedinphotoluminescenceexcitationspectrum,whichmatchedwellwiththeemissionoftheultraviolet(UV)andblue-lightemittingdiode(LED)chips.Uponexcitationat389nmUVlight,intenseemissionscenteredat484,575and668nmwereattributedtothetransitionsof4F9/2→6H15/2,4F9/2→6H13/2and4F9/2→6H11/2ofDy3+,respectively.ThechromaticitycoordinatesandcorrelativecolortemperatureshavebeencalculatedandpresentedintheCommissionInternationaldeI'Eclairage(CIE)diagrams.TheresultsindicatedthatGd1.9(MoO4)3:Dy0.13+withCIEcoordinatesof(x=0.38,y=0.41)andthecorrelativecolortemperatureof4134KisapotentialcandidateforwhiteLEDs.

简介：MonophasicCe~(3+)andPr~(3+)co-dopedyttriumaluminumgarnet(YAG:Ce~(3+),Pr~(3+))nanoparticleswithgooddispersityanduniformgrainsizesintherangeof50–80nmwerepreparedbyatwo-steproute,whichconsistedofamodifiedco-precipitationpreparationofmixedmetalhydroxidehydrateintermediatesatlowtemperatureofabout40oCandasubsequentcalcinationconversionofthesynthesizedintermediatestocrystallinenanoparticleproductsatabout1000oC.Theinfluencesofboththelanthanideion(Ce~(3+)andPr~(3+))dopingconcentrationanddifferentdoping(Ce~(3+)/Pr~(3+))ratioonthephotoluminescenceintensityweresystematicallyinvestigated.Thesynthesized(Ce_(0.6)Pr_(0.4))_(0.04)Y_(2.96)Al_5O_(12)nanoparticleswerenearsphericalnanoclusterswithgooddispersityanduniformsizesintherangeof50–80nmforabout85%oftheparticles.Thestrongestphotoluminescenceintensitywasobservedforthe(Ce_(0.6)Pr_(0.4))_(0.04)Y_(2.96)Al_5O_(12)nanoparticleproducts.

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简介：TheLa3+-loadedadsorbentwaspreparedbythereactionbetweenLa3+andethanolamine-modifiedvegetabletannicextract,totreatF--containingwastewater.TheproblemsofheavycolorcausedbyvegetabletannicextractandofturbiditycausedbyreactionbetweenLa3+andF-weresolved.Whenotherconditionswerenotchanged,pH,temperature,stirringtime,anddosewerechangedrespectivelyandtheadsorbancewastestedrespectively.Theresultsshowthatthisadsorbentpossesseshighsaturatedadsorptivecapacity(18.86mg·g-1)whenpHis5～6,T≤80℃,0.2gdosage,and180minagitatingtime,andtheadsorbancereachesthehighest(98.5%).Theadsorbentcanbeeasilyregeneratedwith0.5mol·L-1NaOHatpH12.

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简介：2005年，英美公司位于智利的铜矿将产铜67万t，与2004年的产量相当。营业利润从2003年的5840万美元增至2004年的6．384亿美元。公司位于智利的铜矿铜产量占到整个公司全部铜产量的95％，铜所带来的利润占全部基本金属总利润的39％。

简介：甘肃省白银有色金属公司是我国大型有色金属企业之一,被评为1995年“中国的脊梁”——国有企业500强的第299名。其冶炼厂于1960年建成投产,发明的“白银炼铜法”获国家科技发明二等奖,独创的“白银炉富氧熔池熔炼法”荣获国家科委科技进步

简介：Thelayer-by-layercomplexationtechniqueofpolymerandmetalionwassuccessfullyutilizedtofabricatetheuhrathinmuhilayerfilmofpoly(3-thiopheneaceticacid(PTAA)andTb^3+ionbydippingthesubstratesalternativelyinpolymerandTb^3+ionaqueoussolutions.UV-vismeasurementrevealedthattheabsorbancehaslinearitywiththebilayernumberfromlayertolayerandtheX-rayphotoelectronspectrum(XPS)confirmedtheexistenceofTb^3+ion.ThepHofboththepolymerandTbCl3solutionsinfluencethethicknessdramaticallywhiletheconcentrationofthesolutionsisnotsosensitive.TheluminescentspectrumofthecomplexfilmshowsthecharacteristicemissionofTb^3+ionaswellastheligandindicatingtheformationofthecomplex.

简介：Eu2+andDy3+codoped(Ca,Sr)7(SiO3)6Cl2yellowphosphorsweresuccessfullysynthesizedbyself-fluxmethod.Thestructure,morphologyandphotoluminescencepropertieswereinvestigatedbyX-raydiffraction(XRD),scanningelectronmicroscopy(SEM)andphotoluminescencespectra.Theas-preparedphosphorshowedabroademissionspectrumcenteredat550nmforEu2+single-dopedphosphor,whilelocatedat548–544nmfortheEu2+,Dy3+codopedsamplesunderexcitationat380nmlight.TheemissionintensitywasgreatlyimprovedwhenDy3+wasdopedintothe(Ca,Sr)7(SiO3)6Cl2:Eu2+system.Thecomposition-optimizedsamplewith3mol.%ofDy3+andconstant10mol.%ofEu2+exhibiteda220%PLenhancementcomparedtothephosphorwith10mol.%Eu2+single-doped.Meanwhile,itwasfoundthatthequantumefficiencyofphosphornamely(Ca,Sr)7(SiO3)6Cl2:3mol.%Dy3+,10mol.%Eu2+couldgetupto24.6%.Thesynthesizedyellow-emitting(Ca,Sr)7(SiO3)6Cl2:Dy3+,Eu2+isapromisingcandidateashigh-efficiencyyellowphosphorforNUV-excitedwhiteLEDs.

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简介：本文介绍在银山矿铜硫选矿指标不稳定、铜在硫精矿中损失严重的情况下．作者用6种不同矿区、不同比例的矿样做了两种流程、10组闭路选矿试验，其中以低品位综合矿试验为代表，与现场铜硫系统的生产进行了对比分析，为选矿工艺的改进和提高技术指标提供依据。

简介：主要介绍了低压防爆开关综合试验台的系统硬件设计部分,对本试验台进行总体方案的制定,确立了采用西门子PLC300作为主控制器,并完成数据处理、模数转换、通信、监控等功能。结合低压防爆开关系统的功能要求和性能指标,在保证整个系统整体试验参数精度前提下,尽量节省了硬件开发成本。