Refractory corundum cib qhia kev paub
Alumina cov ntsiab lus yog ntau dua 90%, corundum cib ua lub ntsiab crystalline theem ntawm refractory khoom. Siab compressive zog ntawm chav tsev kub (txog 340MPa). High load softening pib kub (ntau tshaj 1700 degree). Zoo tshuaj stability, muaj zog tiv taus acidic los yog alkaline slag, hlau thiab kua iav. Lub thermal shock stability yog txuam nrog nws cov qauv. Lub corrosion kuj ntawm cov khoom ntom yog zoo, tab sis lub thermal shock stability tsis zoo. Muab faib ua sintered corundum cib thiab fused corundum cib ob yam. Sintered alumina thiab fused corundum cib tuaj yeem siv los ua cov khoom siv raw, lossis alumina clinker nrog siab Al2O3 / SiO2 piv tuaj yeem ua ke nrog sintered alumina los ntawm sintering txoj kev. Cov pob zeb uas tsis kub hnyiab tuaj yeem ua nrog phosphoric acid lossis lwm yam khoom sib txuas. Mas siv nyob rau hauv ironmaking blast furnace thiab moj tej tawg rauv kub moj tej tawg rauv, steel rauv refining rauv, zawv zawg dej, iav melting rauv thiab petrochemical kev lag luam rauv. Saib cov xim magnesium chrome cib dub liab, av nplaum siab aluminium cib daj, magnesium cib liab daj, silicon cib beige, lub teeb yuag, muaj cov pa roj carbon thiab silicon carbide cov khoom dub, fused corundum cib thiab mullite cov ntaub ntawv feem ntau yog dawb los yog grey. Saib ntawm qhov ceev, qhov ceev ntawm siab aluminium cib feem ntau yog 2.3-2.7, av nplaum cib 2.2-2.4., silicon cib 1.8-2.0., magnesium Cib thiab Magnesia-chromium cib 2. {{}, ntu ntawm lub teeb cib mus tsis hais, nws yuav paub.
