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简介：TheReservesofMineralResourcesinChinaTheMinistryofGeologyandMineralResourcesreportedthatallmineralproductsknownintheworldhavebeendiscoveredinChina.For148kindsofthesemineralsthereserveshavebeenverified.16000andmoremineralregionshavebeenrevealed.ThemineralreservesinChinarank

简介：Themorphology,structureanddistributionoftherareearthcompoundsintheYG8R.YT5RandYT14Rcementedcarbideswithadditionsoftracelightrareearthswerestudiedwithananalyticalelectronmicroscope.TheparticlesoftherareearthcompoundsinthesealloysareallsphericalanddistributeatinterfacesbetweentheCo-cementphaseandWChardphaseor（TiW）Csolidsolution,andinthe（TiW）Csolidsolution.IntheYG8RandYTI4Ralloys,therareearthcompoundisRE2O3withabccstructure,whileintheYT5Ralloy.therareearthcompoundisRE2O2Swithahcpstructure.

简介：Today,manyladiesareengagedintheresearchandproductionworkofREinourcountry.CREIwouldliketotaketheopportunityinthisissuetointroducetoourreadersoneoftheladyrareear-thersofChina,Prof.YangYansheng.SheisnowwiththeChemistryDepart-mentofZhongshanUniversityinSouth

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简介：InvitedbyInnerMongolianSocietyofRareEarth,Dr.V.D.Kosynkin,directorofRareEarthDepartmentofAllRussiaResearchInstituteofChemi-calTechnology,RussianFederationMinistryforAtomicEnergy,lecturedrareearthcirclesinBaotouMar.5—10,1993.Morethan300rareearthre-searchersandexpertslistenedtothelecturesonthefollowingtopics:GeneralSituationofRareEarthIn-dustryintheCommenwealthofIndependentStates

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简介：ChinesePatent:CN1118012APatentee:Mr.ShenchengTao,BeijingSubject:ProcessforHighCurieTemperatureAmorphousREMagneticMaterialAbstract:TheinventioncoversaheattreatmentprocessforhighCurietemperatureamorphousrareearthmagneticmaterialpowder.The.conventionalheattreatmentprocessforhighCurietemperaturerareearthmagneticmaterialpowderwithasizerange0.3—10micronusuallyresultsinlawefficiency,highcostandtheoxidationofthepowderwhenthetemperatureisraisedfromroomtemperaturetothephasetransitionpoint.Theinventedprocesshassolvedtheseproblemsbycontrollingthefollowing4steps:a.searchingforphasetransitionpoint,b.searchingforCuriepoint,c.

简介：ChinesePatent:CN1125652APatentee:Mr.WanxiangRenetal,AnshanIron&SteelCompanySubject:WeldingRodforMn-SteelWeldingAbstract:Theinventedweldingrodconsistsoftwoparts,oneisthecorealloywithacompositionofC=O.08-0.25％,Si=O.30-1.51％,Mn=3.0-15.0％,Cr=5.0-15.0％,Ni=O.5-2.0％,B=O.005-0.1％,P<0.03％,S<0.03％andFebalance,andtheotheristheoutercoatalloyadded

简介：ChinesePatent:CN1116193APatentee:Mr.ChenglinHongetal,Tonghua,JilinProvinceSubject:MagnetizedRareEarthCompositeFertilizerAbstract:Theinventionincludesamagnetizedrareearthcompositenutrientfertilizeranditspreparation.Themaincompositionofthefertilizerisanimalmanure,chemicalfertilizerscontainingnitrogen,phosphateandpotash,coaldustandrareearthandFe3O4dopants.Thewholemixtureismagnetized.Thefertilizerischaracterizedbycheappriceandlonglastingeffectandcanimprovethequalityofthesoilwhencontinuously

简介：ChinaRareEarth1994In1994,Chinarareearthindustryhasenteredaphaseofstronggrowthasaresultoftremendouseffortsinproductsstructurereadjustmentandqualityimprovement.Whatbroughtaboutwasthesubstantialgrowthbothintheproductionandinthesales.Therareearthproduction,domesticconsumptionandexportforgedaheadsimultaneouslyatagreatspeedandmadeanumberofrecord-highs.

简介：WestudiedthestatesofrareearthelementsinoreoftheXianglushanrareearthdeposit.Rareearthoresamplesweretestedandexaminedbyscanningelectronmicroscope,electronprobe,andchemicalleaching.Noindependentrareearthmineralsweredetectedbyscanningelectronmicroscope.Elementsdetectedbytheelectronicprobefortheinsitumicro-zoneofthesampleincluded:O,Al,Si,Ca,Mg,Fe,Ti,K,Na,S,Cl,C,Cu,Cr,V,andPt.Rareearthelementswerenotdetectedbyelectronprobe.(NH4)2SO4,(NH4)Cl,NaCl,andH2SO4wereusedasreagentsinchemicalleachingexperimentsthateasilyleachedoutrareearthelementsundertheactionof10%reagent,indicatingthattherareearthelementsinorearemainlyintheionicstateratherthanpresentasrareearthminerals.

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