Ukuthola i-aluminium ku-bauxite ngokuvamile kusho ukususa i-aluminium trioxide ku-bauxite.Ukuze kufinyelelwe inhloso kunezindlela ezintathu ezihlanganisa: indlela ye-asidi, indlela ye-alkali, indlela ehlanganisiwe ye-acid-base kanye nendlela yokushisa.Kodwa-ke, indlela ye-asidi, indlela ehlanganisiwe ye-acid-base kanye nendlela yokushisa ayisetshenziswa ngobuningi embonini ngenxa yokuphepha nezinzuzo zezomnotho.Indlela ye-alkaline isetshenziswa ekukhiqizeni izimboni.

Kunezindlela ezi-3 zokukhipha i-alumina trioxide kusetshenziswa indlela ye-alkaline okuyindlela yokubala, indlela ye-bayer kanye nendlela ehlanganisiwe.Sizothatha indlela yokubala njengesibonelo.

Indlela yokubala: Ukufaka inani elithile le-calcium carbonate ku-bauxite, into eyingxenye yayo eyinhloko i-sodium aluminate yakheka ngemva kokubalwa kwezinga lokushisa eliphezulu kuhhavini ojikelezayo.Ekugcineni i-alumina itholakala ngemva kokuhlakazwa, i-crystallization kanye nokugazinga.