Waxaa jira laba nooc oo walxo ceeriin ah oo loogu talagalay wax soo saarka alumina ee firfircoon, mid waa "budo degdeg ah" oo ay soo saarto trialumina ama dhagaxa Bayer, kan kalena waxaa soo saara cusbo aluminate ama aluminium ah ama labadaba isku mar.
X, ρ-alumina iyo wax soo saarka X, ρ-alumina
X, ρ-alumina waa walaxda ugu weyn ee ceeriin ah ee loo isticmaalo soo saarista kubbadaha alumina ee firfircoon, ama FCA marka la soo gaabiyo. Shiinaha, waxaa loogu yeeraa "budada sii deynta degdegga ah" sababtoo ah budada alumina ee lagu soo saaro habka fuuq-baxa degdegga ah. "Budada degdega ah" waa isku darka X-alumina iyo p-alumina oo leh waxyaabo kala duwan oo ay ugu wacan tahay xaaladaha wax soo saarka ee kala duwan.
X,ρ-alumina waxaa la helay 1950 waxaana shahaado siisay ASTM 1960. 1970-yadii, x iyo Yurub. Furaha tignoolajiyada X, ρ-alumina waa fuuq-bax degdeg ah, badanaa fal-galaha sariirta dareeraha ah, halkaas oo heerkulka sariirta lagu xakameeyo gaas gubasho ama dareere. 1975-1980, Machadka Warshadaha Kiimikada ee Tianjin ayaa si guul leh u sameeyay tignoolajiyada wax soo saarka ee kululaynta joojinta iyadoo la adeegsanayo astaamaha tignoolajiyada Shiinaha. Waxay isticmaashay fal-galiye koon, waxay ku dartay hydroxide aluminium qalalan oo la jajabiyey, waxayna samaysay isku darka X-alumina iyo ρ-alumina iyadoo lagu dubayo 0.1~10s foornada fuuq-baxa degdegga ah.
Waqtiga boostada: Abriil-01-2023
