简介：Highperformancecontrolofaninteractiveprocesssuchasironandsteelplantreliesonabilitytohonorsafetyandoperationalconstraints;reducethestandarddeviationsofvariablesthatneedtobecontrolled(e.g.productquantity,quality);de-bottleneckingtheprocess;and,maximizeprofitabilityorlowercost(e.g.energysavings,improvehotmetalcontent).Theseobjectivesmaybeprioritizedinthisorder,butcanvaryandareverydifficulttoachieveoptimallythroughconventionalcontrol.Amultivariablepredictivecontrollersolution,alongwithitsextensiveinferentialsensorandbuilt-inoptimizer,providesonlineclosedloopcontrolandoptimizationformanyinteractivemetalandminingprocessestolowertheenergycost,increasethroughput,andoptimizeproductqualityandyield.Controlloopperformanceisalsoakeyfactortoimproveironandsteelplantautomationandoperationresult;HoneywellCPMoffersvender-independentproductwhichprovidesmonitoring,tuning,modelingofcontrolloopandsustainableloopperformanceanalysisandmaintenancesolutiontowardsoperationstabilityandenergysaving.

简介：In2009,thepigironoutputofChinaincreaseddramaticallyupto543.75Mtandwas15.87%higherthanthatin2008,accountingfor60.53%oftheworldproduction.Theprocessingofpigironmustconsumehugeamountofironoresandcoalandconsequentlyleadstotheshortageoforesandcokemakingcoalssupply,withpricessoaringbutqualityworseningremarkably.HowtomaintainorevenimprovetheefficiencyofblastfurnaceproductionundernegativeconditionsofconstantlyworseningresourcesofironoreandcoalhasbecomeanimportantscenariotheChineseironmakingindustrymustface.Inthispaper,theproductionwithhighcoalinjectionrate,lowfuelrateandbigproductivityintheWuhanIronandSteelCorporation（Group）wasintroducedandrevealed.Thequantitativecorrelationbetweenblastfurnaceproductionefficiencyanddiversetechnicalmeasuresthroughcombinedmass-heatbalancesandgas-liquidcounter-currentflowdynamicsanalysis.Moreover,potentialproblemsandcountermeasuresinironmakingbyfeedinghighAl2O3andlowgradeironoreswerealsodiscussed.

简介：Thisstudyprovidesanoverviewoftheproductionandclassificationofmetallurgicalslaganditsimpactonenergy-savingandemissionreductioninthemetallurgicalindustryandananalysisoftheimpactofkeyfactorsonslagprocessingtechnology,includingabriefaccountofblastfurnace(BF)slagprocessingandapplicationswithafocusonthesteelslagdisposalprocessesandthefeaturesofsometypicalprocesses.Inviewofthecharacteristicsofthebasicoxygenfurnace(BOF)slagandthetechnicaldifficultiesfacedbythetraditionalprocesses,itdescribestheprinciple,featuresandtechnicaladvantagesoftheBaosteelshort-flow(BSSF)steelslagtreatmentprocessdevelopedbyBaosteel.Thethinkingandoutlookonthedirectionofthedevelopmentofthemetallurgicalslagprocessingprocessarestated.

简介：Steelproductionremainsanenergy-intensiveindustryinaworldwherethereisanever-increasingemphasisonloweringenergycosts,reducinggreenhousegasemissions,ensuringenvironmentalcompliance,andimprovingproductionrates.Asthegrowthindemandforspecialitysteelscontinuesitssteadyincrease,andnewmarketopportunitiesforeverhighersteelperformanceappear,significantglobalattentionisfocusedonsecondarysteelprocessing,andontheVD,VODandRHprocesses.Onenewtechnologyisabletoaddressalloftheseissuesandconcernstogether-theintegratedladletankvacuumdegassingstationequippedwiththenewmodularmechanicalvacuumpumpingsystems.Thispaperwillexaminetheeconomicandenvironmentalbenefits,operationalcharacteristics,andrecentresultsprovidedbysuchsteeldegassinginstallations.