Cov ntsiab lus index ntawm dawb fused alumina yog aluminium, sodium, potassium, silicon, hlau thiab lwm yam, ntawm uas nrov tshaj plaws thiab dav sib tham yuav tsum yog cov ntsiab lus sodium, uas tuaj yeem pom tias cov ntsiab lus sodium muaj kev cuam tshuam zoo. ntawm qhov zoo ntawm dawb fused alumina.Tam sim no, dawb fused alumina nyob rau hauv kev ua lag luam yog txawv los ntawm sodium cov ntsiab lus, nrog sodium cov ntsiab lus nyob rau hauv 0.35%, sodium cov ntsiab lus nyob rau hauv 0.3%, sodium ntsiab lus nyob rau hauv 0.2% thiab sodium cov ntsiab lus nyob rau hauv 0.1% ntawm ob peb qib, txawv cov khoom siv yuav tsum sib txawv. rau cov ntsiab lus sodium, yog li raws li cov ntsiab lus sodium sib txawv, nws yog qhov txawv ntawm cov dawb fused alumina,tsawg sodium dawb fused aluminathiab micro-sodium dawb fused alumina, thiab lwm yam.
Cov sodium hauv dawb fused alumina feem ntau yog muab los ntawm sodium oxide pom nyob rau hauv industrial alumina.Sodium oxide yog siv nyob rau hauv cov txheej txheem smelting ntawm dawb fused alumina los tsim high sodium aluminate kom txo cov zus tau tej cov alumina (α-Al2O3) nyob rau hauv dawb fused alumina, uas ua rau cov txhuas cov ntsiab lus qis thiab yog li cuam tshuam cov kev ua tau zoo ntawm dawb fused alumina.Kev tswj cov sodium tsawg hauv cov fused alumina dawb tsub kom lub sij hawm smelting, tab sis qhov tshwm sim ntawm kev siv hluav taws xob nce tus nqi ntau lawm;los yog kev siv ncaj qha ntawm qis sodium industrial alumina, tab sis cov nqi lag luam ntawm cov khoom siv sodium tsawg kuj tseem kim dua.
XINLI tsim micro-sodiumdawb fused aluminanrog rau cov ntsiab lus sodium oxide ntawm 0.1% lossis tsawg dua, uas yog tsim rau kev ua cov hlau alloy, siab hardness steel, siab carbon steel thiab lwm yam ntaub ntawv nrog siab hardness thiab tensile zog, thiab muaj cov yam ntxwv zoo xws li siab hardness, siab sharpness thiab anti- muaj peev xwm hlawv.