简介:Thecastablesforladlenozzleweredevelopedusingbrowncorundumasthemainrawmaterialandtherightamountsofcomplexadditives.Theinfluenceofseveraladditivesonthepropertiessuchasstrengthandpermanentlinearchangeofthesampleswasstudied.Theresultsshowedthatapplyingcomplexadditivesimprovedthestrengthandthevolumestabilityofthecastablesgreatly.Thecampaignofthecastablesforladlenozzlehasincreasedfromabout40heatsto70heats.