Muaj ob hom khoom siv raw rau kev tsim cov alumina ua kom nquag, ib qho yog "hmoov ceev" tsim los ntawm trialumina lossis Bayer pob zeb, thiab lwm qhov yog tsim los ntawm aluminate lossis ntsev txhuas lossis ob qho tib lub sijhawm.
X,ρ-alumina thiab cov khoom ntawm X,ρ-alumina
X, ρ-alumina yog cov khoom siv tseem ceeb rau kev tsim cov pob alumina ua haujlwm, lossis FCA luv luv. Hauv Suav teb, nws hu ua "hmoov tso tawm sai" vim yog cov hmoov alumina tsim los ntawm txoj kev ua kom qhuav sai. "Fast depowder" yog kev sib xyaw ntawm X-alumina thiab p-alumina nrog cov ntsiab lus sib txawv vim muaj ntau yam kev tsim khoom sib txawv.
X,ρ-alumina tau tshawb pom xyoo 1950 thiab tau txais daim ntawv pov thawj los ntawm ASTM xyoo 1960. Xyoo 1970, x thiab Tebchaws Europe. Qhov tseem ceeb rau X, ρ-alumina thev naus laus zis yog kev qhuav sai, feem ntau yog nyob rau hauv lub tshuab hluav taws xob fluidized, qhov twg qhov kub ntawm lub txaj raug tswj los ntawm cov roj combustion lossis kua. Xyoo 1975-1980, Tianjin Institute of Chemical Industry tau tsim cov thev naus laus zis tsim cov cua sov ncua nrog cov yam ntxwv ntawm cov thev naus laus zis Suav. Nws siv lub tshuab hluav taws xob cone, ntxiv cov txhuas hydroxide qhuav thiab tsoo, thiab ua cov sib tov ntawm X-alumina thiab ρ-alumina los ntawm kev ci flash 0.1 ~ 10s hauv lub cub tawg sai.
Lub sijhawm tshaj tawm: Plaub Hlis-01-2023
