Pali mitundu iwiri ya zipangizo zopangira alumina yogwira ntchito, imodzi ndi "ufa wofulumira" wopangidwa ndi triallumina kapena mwala wa Bayer, ndipo inayo imapangidwa ndi aluminate kapena mchere wa aluminiyamu kapena zonse ziwiri nthawi imodzi.
X, ρ-aluminium ndi kupanga X, ρ-alumina
X, ρ-alumina ndiye chinthu chachikulu chomwe chimagwiritsidwa ntchito popanga mipira ya alumina yoyendetsedwa, kapena FCA mwachidule. Ku China, imatchedwa "fast release powder" chifukwa cha ufa wa alumina womwe umapangidwa ndi njira yofulumira yochotsera madzi m'thupi. "Fast depowder" ndi chisakanizo cha X-alumina ndi p-alumina chokhala ndi zinthu zosiyanasiyana chifukwa cha mikhalidwe yosiyanasiyana yopangira.
X,ρ-alumina idapezeka mu 1950 ndipo idavomerezedwa ndi ASTM mu 1960. M'zaka za m'ma 1970, x ndi Europe. Chinsinsi cha ukadaulo wa X, ρ -alumina ndi kutaya madzi mwachangu, nthawi zambiri mu reactor yamadzimadzi, komwe kutentha kwa bedi kumayendetsedwa ndi mpweya woyaka kapena madzi. Mu 1975-1980, Tianjin Institute of Chemical Industry idapanga bwino ukadaulo wopanga kutentha mwachangu wokhala ndi mawonekedwe a ukadaulo waku China. Idagwiritsa ntchito reactor ya cone, idawonjezera aluminiyamu youma ndi yophwanyidwa, ndikupanga chisakanizo cha X-alumina ndi ρ-alumina powotcha 0.1 ~ 10s mu uvuni wothamanga wa madzi.
Nthawi yotumizira: Epulo-01-2023
