Theeffectsofseveralcommercialdispersants,includingAN-2000,ammoniumpolyacrylate,sodiumtripolyphosphate,sodiumhexametaphosphate,andofsolidsloadingandofelectro-fusedmagnesiaonrheologicalpropertiesofaqueousalumina-spinelslurrieswerestudied.TheresultsrevealthatAN-2000isthemosteffectiveoneamongtheselecteddispersantsforalumina-spinelslurries.With0.5%weightofAN-2000,the57vol%solidsloadobtainedatshearrateof50s-1.