Don samun aluminum daga bauxite kullum yana nufin barin aluminum trioxide daga bauxite.Don cimma manufar akwai hanyoyi guda uku da suka haɗa da: hanyar acid, hanyar alkali, hanyar haɗin acid-base da hanyar thermal.Duk da haka, hanyar acid, hanyar haɗin acid-tushe da hanyar zafi ba a amfani da su da yawa a cikin masana'antu saboda aminci da amfanin tattalin arziki.Ana amfani da hanyar alkaline a cikin samar da masana'antu.

Akwai hanyoyi guda 3 don hakar alumina trioxide ta amfani da hanyar alkaline waɗanda sune hanyar calcination, hanyar bayer da hanyar haɗin gwiwa.Za mu dauki hanyar calcination a matsayin misali.

Hanyar Calcination: Saka wani adadin adadin calcium carbonate a cikin bauxite, wani abu wanda babban sashinsa shine sodium aluminate yana samuwa ne bayan ƙididdigar yawan zafin jiki a cikin rotary kiln.A ƙarshe ana samun alumina bayan narkar da, crystallization da gasa.