Kune mhando mbiri dzezvinhu zvakagadzirwa pakugadzira alumina, imwe i "fast powder" inogadzirwa ne triallumina kana Bayer stone, uye imwe inogadzirwa ne aluminate kana aruminiyamu munyu kana zvese panguva imwe chete.
X, ρ-alumina uye kugadzirwa kweX,ρ-alumina
X, ρ-alumina ndiyo inonyanya kushandiswa pakugadzira mabhora ealumina anoshandiswa, kana kuti FCA muchidimbu. MuChina, inonzi "fast release powder" nekuda kwealumina powder inogadzirwa nenzira yekukurumidza kushaya mvura mumuviri. "Fast depowder" musanganiswa weX-alumina nep-alumina zvine zvirimo zvakasiyana nekuda kwemamiriro akasiyana ekugadzirwa.
X,ρ-alumina yakawanikwa muna 1950 uye yakapihwa chitupa neASTM muna 1960. Muma1970, x neEurope. Chinhu chikuru chetekinoroji yeX, ρ -alumina idambudziko rekushaya mvura mumuviri, kazhinji mu "fluidized bed reactor", uko tembiricha yemubhedha inodzorwa negasi rinopisa kana mvura. Muna 1975-1980, Tianjin Institute of Chemical Industry yakabudirira kugadzira tekinoroji yekugadzira "suspension heating fast stripping" ine hunhu hwetekinoroji yeChina. Yakashandisa "cone reactor", yakawedzera "dry and crushed aluminum hydroxide", uye yakagadzira musanganiswa weX-alumina neρ-alumina ne "flash roasting" 0.1 ~ 10s mu "rapid dehydration furnace".
Nguva yekutumira: Kubvumbi-01-2023
