Ukufumana i-aluminiyam kwi-bauxite ngokuqhelekileyo kuthetha ukushiya i-aluminium trioxide kwi-bauxite.Ukufikelela injongo kukho iindlela ezintathu ezibandakanya: indlela yeasidi, indlela yealkali, indlela edityanisiweyo ye-asidi kunye nendlela yokushisa.Nangona kunjalo, indlela ye-asidi, indlela edibeneyo ye-asidi kunye nendlela yokushisa ayisetyenziswanga ngobuninzi kwishishini ngenxa yokhuseleko kunye neenzuzo zezoqoqosho.Indlela ye-alkaline isetyenziselwa ukuveliswa kwemveliso.

Kukho iindlela ezi-3 zokukhutshwa kwe-alumina trioxide kusetyenziswa indlela yealkaline eyindlela yokubala, indlela ye-bayer kunye nendlela edibeneyo.Siza kuthatha indlela yokubala njengomzekelo.

Indlela yokubala: Ukubeka umlinganiselo othile wekhalsiyam carbonate kwi-bauxite, into eyinxalenye yesodium aluminate yenziwa emva kokubalwa kobushushu obuphezulu kwi-rotary kiln.Ekugqibeleni i-alumina ifunyenwe emva kokuchithwa, i-crystallization kunye nokutshisa.