Izitini ze-silica-mullite zihlukaniswe ngamabanga amathathu: GM1650, GM1600, kanye ne-GM1550 ngokusho kwepharamitha yokushisa yokunciphisa umthwalo.

Izitini ze-silica-mullite zinezici ezilandelayo:

① Ukwakheka komkhiqizo kuminyene futhi kunokumelana okuhle nokugqokwa. Ukwakheka kwemikhiqizo yezitini ze-silica-mullite kuminyene, futhi ukuminyana kwevolumu ngokuvamile kungu-2.55~2.65g/cm³. Ngenxa yobuningi bayo obuhle kakhulu, amandla kanye nokumelana nokugqoka, isetshenziswa kabanzi kumabhande kasimende we-rotary kiln yesibili yokudubula, amabhande okuhlunga nezinye izingxenye.

② Izinga lokushisa eliphezulu lokuthambisa umthwalo kanye nokusebenza okuhle kwezinga lokushisa eliphezulu. Izinga lokushisa lokuthambisa umthwalo wezitini ze-silica-mullite lingaphezulu kuka-1450 ℃, futhi eliphakeme kakhulu lingafinyelela ngaphezu kuka-1650 ℃.