简介：Todaysteelisproducedbytwosteelmakingprocesses,thebasicoxygenfurnaceandtheelectricarcfurnace.Threetypesofironinputmaterialsforbothprocessesareliquidhotmetalorinsolidifiedformaspigiron,directreducediron(DRI)andhotbriquettediron(HBI)aswellassteelscrap.Hotmetal,pigiron,DRIandHBIarevirginironmaterials,whichhavetobeproducedfromironorebytheso-calledironmakingtechnologies.Newironmakingprocessesbasedonfluidizedbedtechnologyhavebeendevelopedinthelasttwodecades.Themainadvantageofthesetechnologiesisthatfineorecanbedirectlyusedintheprocessesandpriortreatmentsuchassinteringorpelletizingcanbeavoidedwhichisrequiredfortheestablishedprocesses.Theoreticalaspectsforreductionoffineironoxidesinafluidizedbedreactorsystemwillbeexplained.Thefluidizedbedreducingtechnologiesutilizedinthemostadvancednewironmakingprocessesfordirectuseoffineore,FINMET,Circored,FINEXandHIsmeltwillbecompared.

简介：HL-2Adataacquisitionsystem(DAS)wasdevelopedandusedinengineeringtestslastyear.Themainpartsofthesystemincludetheexperimentnetwork,thedataacquisitionandprocessingmechanisms,andthegraphandcharacterdisplayequipments.

简介：Twocompactandintense2.45GHzpermanentprotonsourcesandtheircorrespondinglowenergybeamtransport(LEBT)systemsweredevelopedsuccessfullyforChinaAcceleratorDrivenSub-criticalsystem(C-ADS)in2014,oneofwhichwasbuiltatIMP,LanzhouandtheotheratIHEP,Beijing.Bothprotonsourcescandeliverstable10mA/35keVprotonbeamsatCWmodetotheentrancesofthedownstreamRFQs.AsshowninFig.1,thebeamsextractedbya3-electrodeextractionsystemaretransportedbytheLEBTsystem,whichiscomposedof2identicalsolenoids,andintothe3.2or2.1MeVradio-frequencyquadrupole(RFQ).Inordertoensuresuperconductingcavitiescommissioningandprotection,anelectrostatic-chopperhasbeendesignedandinstalledintheLEBTlinethatcanchopthecwbeamFig.2Totalhydrogenionbeamcurrentversusinputpower.intoapulsedone.Theachievedfall/risetimeofthechopperislessthan20ns.

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