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DevelopmentofMechanicalRepairingTechnologyforRefractories(RotaryShotMethod)AbstractAmongconventionalrepairingtechnologyforrefractories,suchassprayingorshotcastinghasbeendevelopedforlaborsavingandskillfreeofoperators.However,thedurabilityofrepairedbodybysuchmethodswasnotenoughbecausetheyusuallyneedmuchamountofwater.Ontheotherhand,wedevelopedanewrepairingtechnologythatisRotaryShotMethod,whichhasaverysimplemechanicalstructureandneedsmuchlessamountofwaterthanthatofconventionalrepairingtechnology.Consequently,ithasbeenenabletoachieveamuchlongerlifeandlaborsavingforrepairingofsteelladle.