Izinto eziqhelekileyo ze-alumina emhlophe exutywe yi-aluminium, i-sodium, i-potassium, i-silicon, i-iron njalo njalo, apho eyona nto idumileyo nexoxwa ngayo ngokubanzi kufuneka ibe ngumthamo we-sodium, nto leyo enokubonwa ukuba umxholo we-sodium unefuthe elikhulu kumgangatho we-alumina emhlophe exutywe yi-fuse. Okwangoku, i-alumina emhlophe exutywe yi-fuse kwimarike yahlulwe ngumxholo we-sodium, kunye nomxholo we-sodium kwi-0.35%, umxholo we-sodium kwi-0.3%, umxholo we-sodium kwi-0.2% kunye nomxholo we-sodium kwi-0.1% yamanqanaba aliqela, usetyenziso lwemveliso eyahlukeneyo luya kuba neemfuno ezahlukeneyo zomxholo we-sodium, ngoko ke ngokwemixholo eyahlukeneyo ye-sodium, yahlulwe kwi-alumina eqhelekileyo emhlophe exutywe yi-fuse,i-alumina emhlophe exutywe nesodium ephantsikunye ne-micro-sodium white fused alumina, njl.njl.
I-sodium kwi-alumina emhlophe exutywe kakuhle ifumaneka kakhulu kwi-sodium oxide efumaneka kwi-alumina yemizi-mveliso. I-sodium oxide isetyenziswa kwinkqubo yokunyibilikisa i-alumina emhlophe exutywe kakuhle ukuvelisa i-sodium aluminate ephezulu ukunciphisa imveliso ye-alumina (α-Al2O3) kwi-alumina emhlophe exutywe kakuhle, nto leyo ebangela ukuba umxholo we-aluminium ube sezantsi kwaye ngaloo ndlela ichaphazele ukusebenza kwe-alumina emhlophe exutywe kakuhle. Ulawulo lwe-sodium ephantsi kwi-alumina emhlophe exutywe kakuhle luyandisa ixesha lokunyibilikisa, kodwa ukonyuka kokusetyenziswa kombane okubangelwa koko kwandisa iindleko zemveliso yokunyibilikisa; okanye ukusetyenziswa ngokuthe ngqo kwe-alumina yemizi-mveliso ephantsi ye-sodium, kodwa ixabiso lemarike le-alumina yemizi-mveliso ephantsi ye-sodium nalo libiza kakhulu.
I-XINLI ivelisa i-micro-sodiumi-alumina emhlophe exutyiweyoenomxholo we-sodium oxide we-0.1% okanye ngaphantsi, efanelekileyo ekucubunguleni intsimbi ye-alloy, intsimbi yobunzima obuphezulu, intsimbi yekhabhoni ephezulu kunye nezinye izinto ezinobunzima obuphezulu kunye namandla okutsalwa, kwaye ineempawu ezintle kakhulu ezifana nobunzima obuphezulu, ubukhali obuphezulu kunye nokukwazi ukulwa nokutsha.