Tsev > Kev Paub > Ntsiab lus
Vim li cas thiaj Alumina muaj calcined
- Sep 05, 2017 -

Raws li peb txhua tus paub, Alumina muaj xws li 8 yam homogeneous zoo li tus siv lead ua, xws li α, β, γ, rho tawm, θ, kappa, ETA, thiab ntxiv rau, nws feem ntau yog siv nyob rau hauv industrial ntau lawm yog α, beta, γ, thiab Rho alumina. Nyob hauv txoj kab ntawm alumina, qhov oxygen ions yog khov kho nyob rau hauv 6 square, thiab al3 + muab faib rau hauv qhov chaw ntawm lub yim-cev ligand surrounded by oxygen ions, lub pob zeb siv lead ua yuav loj heev, yog li cov melting taw tes thiab kub taw tes yog siab heev. α-type alumina yog insoluble hauv cov dej thiab kua qaub, thiab yog cov txheej txheem ntev tshaj ntawm alumina. Rau cov khoom ntawm ntau yam ceramics, refractories, tab sis kuj rau kev sib tsoo cov neeg ua hauj lwm, fillers, etc., high-purity α-hom alumina los yog ntau lawm ntawm tus txiv neej ua corundum, dag ruby ​​thiab sapphire raw cov ntaub ntawv. Ua ib qho alumina, nws yuav tsum tau siv ntau dua li 1000 degrees calcination, thiaj li alumina tsawg hloov mus rau α-crystalline alumina, uas yog, calcined alumina.