Kunezinhlobo ezimbili zezinto zokusetshenziswa zokukhiqiza i-alumina esebenzayo, enye “iyimpuphu esheshayo” ekhiqizwa yi-triallumina noma itshe le-Bayer, kanti enye ikhiqizwa yi-aluminate noma usawoti we-aluminium noma kokubili ngesikhathi esisodwa.
I-X, i-ρ-alumina kanye nokukhiqizwa kwe-X, ρ-alumina
I-X, i-ρ-alumina iyinto eluhlaza eyinhloko yokukhiqiza amabhola e-alumina asebenzayo, noma i-FCA ngamafuphi. E-China, ibizwa ngokuthi “impuphu yokukhulula ngokushesha” ngenxa yempuphu ye-alumina ekhiqizwa ngendlela yokuphelelwa amanzi ngokushesha.” I-fast depowder” iyinhlanganisela ye-X-alumina ne-p-alumina enokuqukethwe okuhlukile ngenxa yezimo ezahlukene zokukhiqiza.
I-X,ρ-alumina yatholakala ngo-1950 futhi yaqinisekiswa yi-ASTM ngo-1960. Ngawo-1970, i-x neYurophu. Isihluthulelo sobuchwepheshe be-X, ρ -alumina ukuphelelwa amanzi ngokushesha, ngokuvamile ku-reactor yombhede eguquguqukayo, lapho izinga lokushisa lombhede lilawulwa yigesi yokushisa noma uketshezi. Ngo-1975-1980, i-Tianjin Institute of Chemical Industry yathuthukisa ngempumelelo ubuchwepheshe bokukhiqiza i-suspension heating fast stripping obunezici zobuchwepheshe baseShayina. Yasebenzisa i-cone reactor, yanezela i-aluminium hydroxide eyomile nechotshoziwe, futhi yenza ingxube ye-X-alumina ne-ρ-alumina ngokuthosa nge-flash 0.1 ~ 10s esithandweni sokuphelelwa amanzi ngokushesha.
Isikhathi sokuthunyelwe: Ephreli-01-2023
