简介：Somefactorssuchascontinuouspricefallingofrareearthconcentrates,increaseinproductioncostandincreasinginvestmentinsafetyandenvironmentalprotectionpreventedthedevelopmentofminingindustry.Tosafeguardtheinterestsofminingcompaniesandfacilitatethehealthydevelopmentofrareearthindustry,REMiningSocietyofMianningCountyheldageneralmeetingrecently.FollowingresolutionswerepassedonJuly13th:1.SinceJuly14th2005,thelowestprotectivemarketpricesofrareear...

简介：WiththeadministrationofNationalLandResourceMinistrytowardrareearthores,REOfficeofStateCounciltowardrareearthenterprises,andenforcementofenvironmentcontrolmeasures,newoutlookappearsinChineserareearthindustry,featuredbyholisticpriceclimbingofrareearthproducts.Somesmallandwithlargepollutionenterprisescloseddown.Morebigonesstoppedproductionduetoshortsupplyofconcentrates.Butthisisagoodphenomenontothoselargeproducers.Years'stockpilesweresoldout...

简介：Britholite-（Y）（abukumalite）,arare-earthmineralfirstdiscoveredinJapanandSovietUnionin1963,wasrecentlydiscoveredinHenanProvince,China,bySongChunliu,QiaoBingkunandZhangJianhong.Itisasilicatemineralofa-patite-structure.Itschemicalformulais（Y,Ca,Dy）（SiO4）3（OH,F）.Itcontainsabout44%YRO3andnearly5%Dy2O3.Themineraloccursingraniteinassociationwithgadolinite,fergusonite,samarskite,

简介：FuJishuandYeYajunofZhejiangTex-tileEngineeringSchoolofChinarepor-tedthatasmallamountofRE-chlorides（0.3%）addedtothedyeingbathforpuresilkgivesprominentresultsasverifiedbylaboratoryworkandproductiontrialsandCeCl3isaseffectiveasmixedRE-chloridesofthelightsub-group.TheuseofREinsilkdyeingbathsre-suitsin:shorteningtimefordyeing,de-

简介：TheSeventhNationalSymposiumonREAnal-ysis,sponsoredbytheChineseSocietyofRareEarths,washeldinDayongCityofHunanProvinceSept.22-26,1992.Morethan80expertsattendedthesymposiumwith70paperspublished.Prof.JiangZuchenandZhangHuashan,bothfromWuhanUniversitywereinvitedtolecturethemeetingon“TheSituationandProbleminICP

简介：Dr.YiminChaoofJiangsuInstituteofPetrochemistry,JiangsucollaboratedwithDr.JianguoZhaoofMassachusettsInstituteofTechnology,USAonajointresearchproject"StudyonthePhotoluminescenceofT1GaS2andTiGaS2.Er3+SingleCrystal".TheygrewthetitlesinglecrystalsbytheBridgmantechnique.Theyfoundthatthephotoluminescencemechanismofthecrystalsiscloselyre-

简介：TheMinistryofAerospaceIn-dustrychairedameetingonNove-mber6-8,1991inBeijingtore-viewrareearthapplicationsinaircraft.Over70delegatesfrom37domesticinstitutionsattended

简介：TheWeishanREmine,locatedontheWeishanLakeinShandongProvince,about200km.fromtheprovincialcapital,isoneofChina’simportantREmines.Intherangeofonly0.85squarekilometerswithadepthof500metershavebeenfoundtenoddmineralveinsrichinREs,ofwhichhasbeenprovedtobetypicalbastnasiteoccurringintheformofsin-glemineralwithhighpurityandcoarsesize.ThemineralfavourstheseparationandextractionofitsREs.Theadvanta-geousfactorsmentionedaboveresultinhighrecoveryofREsandlowproductioncost.Atpresent,themineisprovided

简介：Rareearthuhrafineparticlehasbeenpaidagreatattentiontoinrecentyearsaroundtheworldbecauseofitsincreasingapplicationsinfunctionalmaterials.Preciseceramicsisatypicalexample.Thepartiealsizesfortheproductnowavailableareusuallyintherangeof100-1000(1=1010m)withlargespecificsurface,say,70—120m2/g.Ultrafinepowdersareusuallyclassifiedinto3gradesdependingontheirpar-ticlesizes,thusthefirstbeingintherangeof10—

简介：ProfessorYuZongsenofBeijingUniver-sityofScienceandTechnologyhassum-marizedtheworksconcerningREadditioninironandsteelinlastfourtofiveyearsandwroteapaperentitled“Re-searchontheApplicationofRareEarthsinIronandSteelinResentYears”,whichwaspresentedinJ.Chin.RESoc.Vol.8No.2(1990)(EnglishEdition).Theauthorshowedmanydataoffree

简介：High-purityREoxidesareusuallyob-tainedbydissolvingmixedREoxidesinhydrochloricacid,andtheobtainedchlo-ridesolutionisthenextractedandse-paratedafterthenon-rareearthimpuri-ties,especiallythehighcontentPb+2,havebeenremoved.Thisprocessisoneofthekeystotheimprovementoftheproductquality.Somesmeltersusebutylxanthateasapurifyingagent,butlargequantitiesofpoisonousgasesareevol-

简介：ApilotexciterfittedwithREperma-nentmagnet,withacapacityof60-160KVA,hasbeenjointlydevelopedbyShenyangUniversityofTechnology,theHarbinE-lectricMachinePlant,theDongfengElec-tricMachinePlantandtheShanghaiElectricPlant.Theexciterhasbeenputintobatchproductionandisusedco-operatedlywithlargehomemadeelectricgenerators.

简介：Physiotherapistshavelongbeenengag-edinthestudyoftheeffectofradia-tiononthehealingprocessofwoundsonskinandotherdiseases.ChengPing,YangHongandXiaQiliangofthePhysiotherapyDepartmentofChanghaiHospitalinShanghaihavedeve-lopeda“H”tubeusingcompoundsof

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简介：PricesoflightrareearthproductsinBaotouroseonthefullscaleinJuly.PriceoflanthanareachedRMB12,000-13,000/t,thatofceriaRMB12,000/t,praseodymiaRMB70,000-72,000/t,Pr-NdoxidesRMB52,000/t,neodymiaRMB65,000/t.DespitethehighpriceofPr-Ndoxidesandneodymia,nogoodsareavailableathand.PricerisingisattributedtoenforcementofenvironmentalprotectionpolicyandheighteningprojectsuspendingofBaogangtailingsdam.REseparationenterprisesalongYellowRiverhave...

简介：Witharapidincreaseinvolumeofve-hiclesintheworld,thepolutioncausedbytheautomobileexhaustedgashasbe-comemoreandmoreserious.Thisproblemhasbroughttoourgovernment’satten-tion.InBeijing,regulationsregardingthesupervisionoftheexhausthavebeenissued.AttheFifthNationalMeetingonRECatalyticpurificationofAutomobileEx-haustheldinBeijing1989,thepartici-pantsfrominstitutes,universities,andfactoriesalloverthecountryreportedanddiscussedthemethodsofpurifica-

简介：Rareearthmasteralloyisoneofthemostim-portantrareearthproductsinChina.Theoutputofrareearthferrosiliconwas3800tonREOin1991,2.2%.increaseincomparisonwith3700tonREOin1990.Itsprincipalapplicationisindomesticfoundryindustry.Sincetheratioofexporttothetotaloutputoftheproductisrathersmallitisunderlittleinflu-

简介：PingyuanRareEarthCompany,Ltd.inGuangdongProvince,hadputitsprocess-inglineintooperationinlastOct.TheplantislocatedinPingyuancountywhichaboundswithion-adsorptiontypeREminerals.BaotouResearchInstituteofRareEarthisthecompany’spartner,providingfortheplantwiththeneeded

简介：1991’sDomesticRareEarthEx-hibition,sponsoredbytheLeadingGroupofRareEarthundertheStateCouncilwasheldfromMay21-30intheCulturalPalaceoftheNationalities,Beijing.Itwasthesuccessionofthe1986’s

简介：ThelargestREconsumerinChinaisthefoundryindustry.Statisticsshowthat46.3%ofthetotalREconsumptionwasusedascastironadditionsin1988.TheamountofREappliedincastinginallthesteelplantsincreasedtwiceinthepasttenyears.Manysparepartsformetallurgicalma-chineryincludingwearingpiates,grin-dingballs,sludgepumps,carriersofsin-teringmachine,ingotmolds,rolls,draw-ingheads,guides,pipes,cylindercasings,gears,etc.,aremadeoutofRE-treatednodular-,vermicular-,andgraycastiron,